tls-2.1.7: TLS protocol native implementation

Safe Haskell | None
Language | Haskell2010

Network.TLS

Contents

- Basic APIs
- Exceptions
- Backend abstraction
- Parameters
  - Client parameters
  - Server parameters
  - Shared
  - Client hooks
  - Server hooks
  - Supported
  - Debug parameters
  - Limit parameters
- Shared parameters
  - Credentials
  - Session manager
  - Session data
  - Validation Cache
- Types
  - For `Supported`
  - For parameters and hooks
- Advanced APIs
  - Backend
  - Information gathering
  - Negotiated
  - Post-handshake actions
  - Modifying hooks in context
- Errors and exceptions
  - Errors
  - Exceptions
- Raw types
  - Compressions class
  - Crypto Key
  - Ciphers & Predefined ciphers
- Deprecated

Description

Native Haskell TLS protocol implementation for servers and clients.

This provides a high-level implementation of a sensitive security protocol, eliminating a common set of security issues through the use of the advanced type system, high level constructions and common Haskell features.

Currently implement the TLS1.2 and TLS 1.3 protocol, and support RSA and Ephemeral (Elliptic curve and regular) Diffie Hellman key exchanges, and many extensions.

The tipical usage is:

    socket <- ...
    ctx <- contextNew socket <params>
    handshake ctx
    ... (using recvData and sendData)
    bye

Synopsis

- data Context
- contextNew :: (MonadIO m, HasBackend backend, TLSParams params) => backend -> params -> m Context
- handshake :: MonadIO m => Context -> m ()
- sendData :: MonadIO m => Context -> ByteString -> m ()
- recvData :: MonadIO m => Context -> m ByteString
- bye :: MonadIO m => Context -> m ()
- class HasBackend a where
  - initializeBackend :: a -> IO ()
  - getBackend :: a -> Backend
- data Backend = Backend {
  - backendFlush :: IO ()
  - backendClose :: IO ()
  - backendSend :: ByteString -> IO ()
  - backendRecv :: Int -> IO ByteString
  }
- class TLSParams a
- data ClientParams
- defaultParamsClient :: HostName -> ByteString -> ClientParams
- clientServerIdentification :: ClientParams -> (HostName, ByteString)
- clientUseServerNameIndication :: ClientParams -> Bool
- clientWantSessionResume :: ClientParams -> Maybe (SessionID, SessionData)
- clientWantSessionResumeList :: ClientParams -> [(SessionID, SessionData)]
- clientShared :: ClientParams -> Shared
- clientHooks :: ClientParams -> ClientHooks
- clientSupported :: ClientParams -> Supported
- clientDebug :: ClientParams -> DebugParams
- clientLimit :: ClientParams -> Limit
- clientUseEarlyData :: ClientParams -> Bool
- data ServerParams
- defaultParamsServer :: ServerParams
- serverWantClientCert :: ServerParams -> Bool
- serverCACertificates :: ServerParams -> [SignedCertificate]
- serverDHEParams :: ServerParams -> Maybe DHParams
- serverHooks :: ServerParams -> ServerHooks
- serverShared :: ServerParams -> Shared
- serverSupported :: ServerParams -> Supported
- serverDebug :: ServerParams -> DebugParams
- serverLimit :: ServerParams -> Limit
- serverEarlyDataSize :: ServerParams -> Int
- serverTicketLifetime :: ServerParams -> Int
- data Shared
- defaultShared :: Shared
- sharedCredentials :: Shared -> Credentials
- sharedSessionManager :: Shared -> SessionManager
- sharedCAStore :: Shared -> CertificateStore
- sharedValidationCache :: Shared -> ValidationCache
- sharedHelloExtensions :: Shared -> [ExtensionRaw]
- data ClientHooks
- defaultClientHooks :: ClientHooks
- type OnCertificateRequest = ([CertificateType], Maybe [HashAndSignatureAlgorithm], [DistinguishedName]) -> IO (Maybe (CertificateChain, PrivKey))
- onCertificateRequest :: ClientHooks -> OnCertificateRequest
- type OnServerCertificate = CertificateStore -> ValidationCache -> ServiceID -> CertificateChain -> IO [FailedReason]
- onServerCertificate :: ClientHooks -> OnServerCertificate
- validateClientCertificate :: CertificateStore -> ValidationCache -> CertificateChain -> IO CertificateUsage
- onSuggestALPN :: ClientHooks -> IO (Maybe [ByteString])
- onCustomFFDHEGroup :: ClientHooks -> DHParams -> DHPublic -> IO GroupUsage
- onServerFinished :: ClientHooks -> Information -> IO ()
- data ServerHooks
- defaultServerHooks :: ServerHooks
- onClientCertificate :: ServerHooks -> CertificateChain -> IO CertificateUsage
- onUnverifiedClientCert :: ServerHooks -> IO Bool
- onCipherChoosing :: ServerHooks -> Version -> [Cipher] -> Cipher
- onServerNameIndication :: ServerHooks -> Maybe HostName -> IO Credentials
- onNewHandshake :: ServerHooks -> Measurement -> IO Bool
- onALPNClientSuggest :: ServerHooks -> Maybe ([ByteString] -> IO ByteString)
- onEncryptedExtensionsCreating :: ServerHooks -> [ExtensionRaw] -> IO [ExtensionRaw]
- data Measurement
- nbHandshakes :: Measurement -> Word32
- bytesReceived :: Measurement -> Word32
- bytesSent :: Measurement -> Word32
- data Supported
- defaultSupported :: Supported
- supportedVersions :: Supported -> [Version]
- supportedCiphers :: Supported -> [Cipher]
- supportedCompressions :: Supported -> [Compression]
- supportedHashSignatures :: Supported -> [HashAndSignatureAlgorithm]
- supportedSecureRenegotiation :: Supported -> Bool
- supportedClientInitiatedRenegotiation :: Supported -> Bool
- supportedExtendedMainSecret :: Supported -> EMSMode
- supportedSession :: Supported -> Bool
- supportedFallbackScsv :: Supported -> Bool
- supportedEmptyPacket :: Supported -> Bool
- supportedGroups :: Supported -> [Group]
- data DebugParams
- defaultDebugParams :: DebugParams
- debugSeed :: DebugParams -> Maybe Seed
- debugPrintSeed :: DebugParams -> Seed -> IO ()
- debugVersionForced :: DebugParams -> Maybe Version
- debugKeyLogger :: DebugParams -> String -> IO ()
- data Limit
- defaultLimit :: Limit
- limitHandshakeFragment :: Limit -> Int
- limitRecordSize :: Limit -> Maybe Int
- newtype Credentials = Credentials [Credential]
- type Credential = (CertificateChain, PrivKey)
- credentialLoadX509 :: FilePath -> FilePath -> IO (Either String Credential)
- credentialLoadX509FromMemory :: ByteString -> ByteString -> Either String Credential
- credentialLoadX509Chain :: FilePath -> [FilePath] -> FilePath -> IO (Either String Credential)
- credentialLoadX509ChainFromMemory :: ByteString -> [ByteString] -> ByteString -> Either String Credential
- data SessionManager
- noSessionManager :: SessionManager
- sessionResume :: SessionManager -> SessionIDorTicket -> IO (Maybe SessionData)
- sessionResumeOnlyOnce :: SessionManager -> SessionIDorTicket -> IO (Maybe SessionData)
- sessionEstablish :: SessionManager -> SessionIDorTicket -> SessionData -> IO (Maybe Ticket)
- sessionInvalidate :: SessionManager -> SessionIDorTicket -> IO ()
- sessionUseTicket :: SessionManager -> Bool
- type SessionID = ByteString
- type SessionIDorTicket = ByteString
- type Ticket = ByteString
- data SessionData
- sessionVersion :: SessionData -> Version
- sessionCipher :: SessionData -> CipherID
- sessionCompression :: SessionData -> CompressionID
- sessionClientSNI :: SessionData -> Maybe HostName
- sessionSecret :: SessionData -> ByteString
- sessionGroup :: SessionData -> Maybe Group
- sessionTicketInfo :: SessionData -> Maybe TLS13TicketInfo
- sessionALPN :: SessionData -> Maybe ByteString
- sessionMaxEarlyDataSize :: SessionData -> Int
- sessionFlags :: SessionData -> [SessionFlag]
- data SessionFlag = SessionEMS
- data TLS13TicketInfo
- is0RTTPossible :: SessionData -> Bool
- data ValidationCache = ValidationCache {
  - cacheQuery :: ValidationCacheQueryCallback
  - cacheAdd :: ValidationCacheAddCallback
  }
- defaultValidationCache :: ValidationCache
- type ValidationCacheQueryCallback = ServiceID -> Fingerprint -> Certificate -> IO ValidationCacheResult
- type ValidationCacheAddCallback = ServiceID -> Fingerprint -> Certificate -> IO ()
- data ValidationCacheResult
  - = ValidationCachePass
  - | ValidationCacheDenied String
  - | ValidationCacheUnknown
- exceptionValidationCache :: [(ServiceID, Fingerprint)] -> ValidationCache
- newtype Version where
  - Version Word16
  - pattern TLS12 :: Version
  - pattern TLS13 :: Version
  - pattern SSL2 :: Version
  - pattern SSL3 :: Version
  - pattern TLS10 :: Version
  - pattern TLS11 :: Version
- data Compression = CompressionC a => Compression a
- nullCompression :: Compression
- type HashAndSignatureAlgorithm = (HashAlgorithm, SignatureAlgorithm)
- supportedSignatureSchemes :: [HashAndSignatureAlgorithm]
- newtype HashAlgorithm where
  - HashAlgorithm {
    - fromHashAlgorithm :: Word8
    }
  - pattern HashMD5 :: HashAlgorithm
  - pattern HashSHA1 :: HashAlgorithm
  - pattern HashSHA224 :: HashAlgorithm
  - pattern HashSHA256 :: HashAlgorithm
  - pattern HashSHA384 :: HashAlgorithm
  - pattern HashSHA512 :: HashAlgorithm
  - pattern HashNone :: HashAlgorithm
  - pattern HashIntrinsic :: HashAlgorithm
- newtype SignatureAlgorithm where
  - SignatureAlgorithm {
    - fromSignatureAlgorithm :: Word8
    }
  - pattern SignatureAnonymous :: SignatureAlgorithm
  - pattern SignatureRSA :: SignatureAlgorithm
  - pattern SignatureDSA :: SignatureAlgorithm
  - pattern SignatureECDSA :: SignatureAlgorithm
  - pattern SignatureRSApssRSAeSHA256 :: SignatureAlgorithm
  - pattern SignatureRSApssRSAeSHA384 :: SignatureAlgorithm
  - pattern SignatureRSApssRSAeSHA512 :: SignatureAlgorithm
  - pattern SignatureEd25519 :: SignatureAlgorithm
  - pattern SignatureEd448 :: SignatureAlgorithm
  - pattern SignatureRSApsspssSHA256 :: SignatureAlgorithm
  - pattern SignatureRSApsspssSHA384 :: SignatureAlgorithm
  - pattern SignatureRSApsspssSHA512 :: SignatureAlgorithm
  - pattern SignatureBrainpoolP256 :: SignatureAlgorithm
  - pattern SignatureBrainpoolP384 :: SignatureAlgorithm
  - pattern SignatureBrainpoolP512 :: SignatureAlgorithm
- newtype Group where
  - Group Word16
  - pattern P256 :: Group
  - pattern P384 :: Group
  - pattern P521 :: Group
  - pattern X25519 :: Group
  - pattern X448 :: Group
  - pattern FFDHE2048 :: Group
  - pattern FFDHE3072 :: Group
  - pattern FFDHE4096 :: Group
  - pattern FFDHE6144 :: Group
  - pattern FFDHE8192 :: Group
- supportedNamedGroups :: [Group]
- data EMSMode
  - = NoEMS
  - | AllowEMS
  - | RequireEMS
- type DHParams = Params
- type DHPublic = PublicNumber
- data GroupUsage
  - = GroupUsageValid
  - | GroupUsageInsecure
  - | GroupUsageUnsupported String
  - | GroupUsageInvalidPublic
- data CertificateUsage
  - = CertificateUsageAccept
  - | CertificateUsageReject CertificateRejectReason
- data CertificateRejectReason
  - = CertificateRejectExpired
  - | CertificateRejectRevoked
  - | CertificateRejectUnknownCA
  - | CertificateRejectAbsent
  - | CertificateRejectOther String
- newtype CertificateType where
  - CertificateType {
    - fromCertificateType :: Word8
    }
  - pattern CertificateType_RSA_Sign :: CertificateType
  - pattern CertificateType_DSA_Sign :: CertificateType
  - pattern CertificateType_ECDSA_Sign :: CertificateType
  - pattern CertificateType_Ed25519_Sign :: CertificateType
  - pattern CertificateType_Ed448_Sign :: CertificateType
- newtype CertificateChain = CertificateChain [SignedExact Certificate]
- type HostName = String
- data MaxFragmentEnum
  - = MaxFragment512
  - | MaxFragment1024
  - | MaxFragment2048
  - | MaxFragment4096
- ctxBackend :: Context -> Backend
- contextFlush :: Context -> IO ()
- contextClose :: Context -> IO ()
- data Information
- contextGetInformation :: Context -> IO (Maybe Information)
- infoVersion :: Information -> Version
- infoCipher :: Information -> Cipher
- infoCompression :: Information -> Compression
- infoMainSecret :: Information -> Maybe ByteString
- infoExtendedMainSecret :: Information -> Bool
- infoClientRandom :: Information -> Maybe ClientRandom
- infoServerRandom :: Information -> Maybe ServerRandom
- infoSupportedGroup :: Information -> Maybe Group
- infoTLS12Resumption :: Information -> Bool
- infoTLS13HandshakeMode :: Information -> Maybe HandshakeMode13
- infoIsEarlyDataAccepted :: Information -> Bool
- data ClientRandom
- data ServerRandom
- unClientRandom :: ClientRandom -> ByteString
- unServerRandom :: ServerRandom -> ByteString
- data HandshakeMode13
  - = FullHandshake
  - | HelloRetryRequest
  - | PreSharedKey
  - | RTT0
- getClientCertificateChain :: Context -> IO (Maybe CertificateChain)
- getNegotiatedProtocol :: MonadIO m => Context -> m (Maybe ByteString)
- getClientSNI :: MonadIO m => Context -> m (Maybe HostName)
- updateKey :: MonadIO m => Context -> KeyUpdateRequest -> m Bool
- data KeyUpdateRequest
  - = OneWay
  - | TwoWay
- requestCertificate :: Context -> IO Bool
- getTLSUnique :: Context -> IO (Maybe ByteString)
- getTLSExporter :: Context -> IO (Maybe ByteString)
- getTLSServerEndPoint :: Context -> IO (Maybe ByteString)
- getFinished :: Context -> IO (Maybe VerifyData)
- getPeerFinished :: Context -> IO (Maybe VerifyData)
- data Hooks
- defaultHooks :: Hooks
- hookRecvHandshake :: Hooks -> Handshake -> IO Handshake
- hookRecvHandshake13 :: Hooks -> Handshake13 -> IO Handshake13
- hookRecvCertificates :: Hooks -> CertificateChain -> IO ()
- hookLogging :: Hooks -> Logging
- contextModifyHooks :: Context -> (Hooks -> Hooks) -> IO ()
- data Handshake
- contextHookSetHandshakeRecv :: Context -> (Handshake -> IO Handshake) -> IO ()
- data Handshake13
- contextHookSetHandshake13Recv :: Context -> (Handshake13 -> IO Handshake13) -> IO ()
- contextHookSetCertificateRecv :: Context -> (CertificateChain -> IO ()) -> IO ()
- data Logging
- defaultLogging :: Logging
- loggingPacketSent :: Logging -> String -> IO ()
- loggingPacketRecv :: Logging -> String -> IO ()
- loggingIOSent :: Logging -> ByteString -> IO ()
- loggingIORecv :: Logging -> Header -> ByteString -> IO ()
- data Header = Header ProtocolType Version Word16
- newtype ProtocolType where
  - ProtocolType {
    - fromProtocolType :: Word8
    }
  - pattern ProtocolType_ChangeCipherSpec :: ProtocolType
  - pattern ProtocolType_Alert :: ProtocolType
  - pattern ProtocolType_Handshake :: ProtocolType
  - pattern ProtocolType_AppData :: ProtocolType
- contextHookSetLogging :: Context -> Logging -> IO ()
- data TLSError
  - = Error_Misc String
  - | Error_Protocol String AlertDescription
  - | Error_Protocol_Warning String AlertDescription
  - | Error_Certificate String
  - | Error_HandshakePolicy String
  - | Error_EOF
  - | Error_Packet String
  - | Error_Packet_unexpected String String
  - | Error_Packet_Parsing String
  - | Error_TCP_Terminate
- data KxError
  - = RSAError Error
  - | KxUnsupported
- newtype AlertDescription where
  - AlertDescription {
    - fromAlertDescription :: Word8
    }
  - pattern DecodeError :: AlertDescription
  - pattern CloseNotify :: AlertDescription
  - pattern UnexpectedMessage :: AlertDescription
  - pattern BadRecordMac :: AlertDescription
  - pattern DecryptionFailed :: AlertDescription
  - pattern RecordOverflow :: AlertDescription
  - pattern DecompressionFailure :: AlertDescription
  - pattern HandshakeFailure :: AlertDescription
  - pattern BadCertificate :: AlertDescription
  - pattern UnsupportedCertificate :: AlertDescription
  - pattern CertificateRevoked :: AlertDescription
  - pattern CertificateExpired :: AlertDescription
  - pattern CertificateUnknown :: AlertDescription
  - pattern IllegalParameter :: AlertDescription
  - pattern UnknownCa :: AlertDescription
  - pattern AccessDenied :: AlertDescription
  - pattern DecryptError :: AlertDescription
  - pattern ExportRestriction :: AlertDescription
  - pattern ProtocolVersion :: AlertDescription
  - pattern InsufficientSecurity :: AlertDescription
  - pattern InternalError :: AlertDescription
  - pattern InappropriateFallback :: AlertDescription
  - pattern UserCanceled :: AlertDescription
  - pattern NoRenegotiation :: AlertDescription
  - pattern MissingExtension :: AlertDescription
  - pattern UnsupportedExtension :: AlertDescription
  - pattern CertificateUnobtainable :: AlertDescription
  - pattern UnrecognizedName :: AlertDescription
  - pattern BadCertificateStatusResponse :: AlertDescription
  - pattern BadCertificateHashValue :: AlertDescription
  - pattern UnknownPskIdentity :: AlertDescription
  - pattern CertificateRequired :: AlertDescription
  - pattern NoApplicationProtocol :: AlertDescription
- data TLSException
  - = Terminated Bool String TLSError
  - | HandshakeFailed TLSError
  - | PostHandshake TLSError
  - | Uncontextualized TLSError
  - | ConnectionNotEstablished
  - | MissingHandshake
- class CompressionC a where
  - compressionCID :: a -> CompressionID
  - compressionCDeflate :: a -> ByteString -> (a, ByteString)
  - compressionCInflate :: a -> ByteString -> (a, ByteString)
- type CompressionID = Word8
- data PubKey
  - = PubKeyRSA PublicKey
  - | PubKeyDSA PublicKey
  - | PubKeyDH (Integer, Integer, Integer, Maybe Integer, ([Word8], Integer))
  - | PubKeyEC PubKeyEC
  - | PubKeyX25519 PublicKey
  - | PubKeyX448 PublicKey
  - | PubKeyEd25519 PublicKey
  - | PubKeyEd448 PublicKey
  - | PubKeyUnknown OID ByteString
- data PrivKey
  - = PrivKeyRSA PrivateKey
  - | PrivKeyDSA PrivateKey
  - | PrivKeyEC PrivKeyEC
  - | PrivKeyX25519 SecretKey
  - | PrivKeyX448 SecretKey
  - | PrivKeyEd25519 SecretKey
  - | PrivKeyEd448 SecretKey
- data Cipher = Cipher {
  - cipherID :: CipherID
  - cipherName :: String
  - cipherHash :: Hash
  - cipherBulk :: Bulk
  - cipherKeyExchange :: CipherKeyExchangeType
  - cipherMinVer :: Maybe Version
  - cipherPRFHash :: Maybe Hash
  }
- data Hash
  - = MD5
  - | SHA1
  - | SHA224
  - | SHA256
  - | SHA384
  - | SHA512
  - | SHA1_MD5
- data CipherKeyExchangeType
  - = CipherKeyExchange_RSA
  - | CipherKeyExchange_DH_Anon
  - | CipherKeyExchange_DHE_RSA
  - | CipherKeyExchange_ECDHE_RSA
  - | CipherKeyExchange_DHE_DSA
  - | CipherKeyExchange_DH_DSA
  - | CipherKeyExchange_DH_RSA
  - | CipherKeyExchange_ECDH_ECDSA
  - | CipherKeyExchange_ECDH_RSA
  - | CipherKeyExchange_ECDHE_ECDSA
  - | CipherKeyExchange_TLS13
- data Bulk = Bulk {
  - bulkName :: String
  - bulkKeySize :: Int
  - bulkIVSize :: Int
  - bulkExplicitIV :: Int
  - bulkAuthTagLen :: Int
  - bulkBlockSize :: Int
  - bulkF :: BulkFunctions
  }
- data BulkFunctions
  - = BulkBlockF (BulkDirection -> BulkKey -> BulkBlock)
  - | BulkStreamF (BulkDirection -> BulkKey -> BulkStream)
  - | BulkAeadF (BulkDirection -> BulkKey -> BulkAEAD)
- data BulkDirection
  - = BulkEncrypt
  - | BulkDecrypt
- data BulkState
  - = BulkStateStream BulkStream
  - | BulkStateBlock BulkBlock
  - | BulkStateAEAD BulkAEAD
  - | BulkStateUninitialized
- newtype BulkStream = BulkStream (ByteString -> (ByteString, BulkStream))
- type BulkBlock = BulkIV -> ByteString -> (ByteString, BulkIV)
- type BulkAEAD = BulkNonce -> ByteString -> BulkAdditionalData -> (ByteString, AuthTag)
- bulkInit :: Bulk -> BulkDirection -> BulkKey -> BulkState
- type CipherID = Word16
- cipherKeyBlockSize :: Cipher -> Int
- type BulkKey = ByteString
- type BulkIV = ByteString
- type BulkNonce = ByteString
- type BulkAdditionalData = ByteString
- cipherAllowedForVersion :: Version -> Cipher -> Bool
- hasMAC :: BulkFunctions -> Bool
- hasRecordIV :: BulkFunctions -> Bool
- elemCipher :: [CipherId] -> Cipher -> Bool
- intersectCiphers :: [CipherId] -> [Cipher] -> [Cipher]
- findCipher :: CipherID -> [Cipher] -> Maybe Cipher
- recvData' :: MonadIO m => Context -> m ByteString
- type Bytes = ByteString
- data ValidationChecks = ValidationChecks {
  - checkTimeValidity :: Bool
  - checkAtTime :: Maybe DateTime
  - checkStrictOrdering :: Bool
  - checkCAConstraints :: Bool
  - checkExhaustive :: Bool
  - checkLeafV3 :: Bool
  - checkLeafKeyUsage :: [ExtKeyUsageFlag]
  - checkLeafKeyPurpose :: [ExtKeyUsagePurpose]
  - checkFQHN :: Bool
  }
- data ValidationHooks = ValidationHooks {
  - hookMatchSubjectIssuer :: DistinguishedName -> Certificate -> Bool
  - hookValidateTime :: DateTime -> Certificate -> [FailedReason]
  - hookValidateName :: HostName -> Certificate -> [FailedReason]
  - hookFilterReason :: [FailedReason] -> [FailedReason]
  }
- clientUseMaxFragmentLength :: ClientParams -> Maybe MaxFragmentEnum

# Basic APIs

data Context #

A TLS Context keep tls specific state, parameters and backend information.

contextNew #

Arguments

:: (MonadIO m, HasBackend backend, TLSParams params) |
=> backend | Backend abstraction with specific method to interact with the connection type.
-> params | Parameters of the context.
-> m Context |

create a new context using the backend and parameters specified.

handshake :: MonadIO m => Context -> m () #

Handshake for a new TLS connection This is to be called at the beginning of a connection, and during renegotiation. Don't use this function as the acquire resource of `bracket`.

sendData :: MonadIO m => Context -> ByteString -> m () #

sendData sends a bunch of data. It will automatically chunk data to acceptable packet size

recvData :: MonadIO m => Context -> m ByteString #

Get data out of Data packet, and automatically renegotiate if a Handshake ClientHello is received. An empty result means EOF.

bye :: MonadIO m => Context -> m () #

Notify the context that this side wants to close connection. This is important that it is called before closing the handle, otherwise the session might not be resumable (for version < TLS1.2). This doesn't actually close the handle.

Proper usage is as follows:

    ctx <- contextNew <backend> <params>
    handshake ctx
    ...
    bye

The following code ensures nothing but is no harm.

    bracket (contextNew <backend> <params>) bye $ \ctx -> do
      handshake ctx
      ...

# Exceptions

Since 1.8.0, this library only throws exceptions of type `TLSException`. In the common case where the chosen backend is socket, `IOException` may be thrown as well. This happens because the backend for sockets, opaque to most modules in the `tls` library, throws those exceptions.

# Backend abstraction

class HasBackend a where #

Methods

initializeBackend :: a -> IO () #

getBackend :: a -> Backend #

#### Instances

Instances details

HasBackend Handle # |
Instance details Defined in Network.TLS.Backend Methods initializeBackend :: Handle -> IO () # getBackend :: Handle -> Backend #
HasBackend Socket # |
Instance details Defined in Network.TLS.Backend Methods initializeBackend :: Socket -> IO () # getBackend :: Socket -> Backend #
HasBackend Backend # |
Instance details Defined in Network.TLS.Backend Methods initializeBackend :: Backend -> IO () # getBackend :: Backend -> Backend #

data Backend #

Connection IO backend

Constructors

Backend |
Fields backendFlush :: IO () Flush the connection sending buffer, if any. backendClose :: IO () Close the connection. backendSend :: ByteString -> IO () Send a bytestring through the connection. backendRecv :: Int -> IO ByteString Receive specified number of bytes from the connection.

#### Instances

Instances details

HasBackend Backend # |
Instance details Defined in Network.TLS.Backend Methods initializeBackend :: Backend -> IO () # getBackend :: Backend -> Backend #

# Parameters

class TLSParams a #

Minimal complete definition

getTLSCommonParams, getTLSRole, doHandshake, doHandshakeWith, doRequestCertificate, doPostHandshakeAuthWith

#### Instances

Instances details

TLSParams ClientParams # |
Instance details Defined in Network.TLS.Context Methods getTLSCommonParams :: ClientParams -> CommonParams getTLSRole :: ClientParams -> Role doHandshake :: ClientParams -> Context -> IO () doHandshakeWith :: ClientParams -> Context -> Handshake -> IO () doRequestCertificate :: ClientParams -> Context -> IO Bool doPostHandshakeAuthWith :: ClientParams -> Context -> Handshake13 -> IO ()
TLSParams ServerParams # |
Instance details Defined in Network.TLS.Context Methods getTLSCommonParams :: ServerParams -> CommonParams getTLSRole :: ServerParams -> Role doHandshake :: ServerParams -> Context -> IO () doHandshakeWith :: ServerParams -> Context -> Handshake -> IO () doRequestCertificate :: ServerParams -> Context -> IO Bool doPostHandshakeAuthWith :: ServerParams -> Context -> Handshake13 -> IO ()

## Client parameters

data ClientParams #

#### Instances

Instances details

Show ClientParams # |
Instance details Defined in Network.TLS.Parameters Methods showsPrec :: Int -> ClientParams -> ShowS # show :: ClientParams -> String # showList :: [ClientParams] -> ShowS #
TLSParams ClientParams # |
Instance details Defined in Network.TLS.Context Methods getTLSCommonParams :: ClientParams -> CommonParams getTLSRole :: ClientParams -> Role doHandshake :: ClientParams -> Context -> IO () doHandshakeWith :: ClientParams -> Context -> Handshake -> IO () doRequestCertificate :: ClientParams -> Context -> IO Bool doPostHandshakeAuthWith :: ClientParams -> Context -> Handshake13 -> IO ()

defaultParamsClient :: HostName -> ByteString -> ClientParams #

Default value for `ClientParams`

clientServerIdentification :: ClientParams -> (HostName, ByteString) #

Define the name of the server, along with an extra service identification blob. this is important that the hostname part is properly filled for security reason, as it allow to properly associate the remote side with the given certificate during a handshake.

The extra blob is useful to differentiate services running on the same host, but that might have different certificates given. It's only used as part of the X509 validation infrastructure.

This value is typically set by `defaultParamsClient`.

clientUseServerNameIndication :: ClientParams -> Bool #

Allow the use of the Server Name Indication TLS extension during handshake, which allow the client to specify which host name, it's trying to access. This is useful to distinguish CNAME aliasing (e.g. web virtual host).

Default: `True`

clientWantSessionResume :: ClientParams -> Maybe (SessionID, SessionData) #

try to establish a connection using this session for TLS 1.2/TLS 1.3. This can be used for TLS 1.3 but for backward compatibility purpose only. Use `clientWantSessionResume13` instead for TLS 1.3.

Default: `Nothing`

clientWantSessionResumeList :: ClientParams -> [(SessionID, SessionData)] #

try to establish a connection using one of this sessions especially for TLS 1.3. This take precedence over `clientWantSessionResume`. For convenience, this can be specified for TLS 1.2 but only the first entry is used.

Default: '[]'

clientShared :: ClientParams -> Shared #

See the default value of `Shared`.

clientHooks :: ClientParams -> ClientHooks #

See the default value of `ClientHooks`.

clientSupported :: ClientParams -> Supported #

In this element, you'll need to override the default empty value of of `supportedCiphers` with a suitable cipherlist.

See the default value of `Supported`.

clientDebug :: ClientParams -> DebugParams #

See the default value of `DebugParams`.

clientLimit :: ClientParams -> Limit #

clientUseEarlyData :: ClientParams -> Bool #

Client tries to send early data in TLS 1.3 via `sendData` if possible. If not accepted by the server, the early data is automatically re-sent.

Default: `False`

## Server parameters

data ServerParams #

#### Instances

Instances details

Default ServerParams # |
Instance details Defined in Network.TLS.Parameters Methods def :: ServerParams #
Show ServerParams # |
Instance details Defined in Network.TLS.Parameters Methods showsPrec :: Int -> ServerParams -> ShowS # show :: ServerParams -> String # showList :: [ServerParams] -> ShowS #
TLSParams ServerParams # |
Instance details Defined in Network.TLS.Context Methods getTLSCommonParams :: ServerParams -> CommonParams getTLSRole :: ServerParams -> Role doHandshake :: ServerParams -> Context -> IO () doHandshakeWith :: ServerParams -> Context -> Handshake -> IO () doRequestCertificate :: ServerParams -> Context -> IO Bool doPostHandshakeAuthWith :: ServerParams -> Context -> Handshake13 -> IO ()

defaultParamsServer :: ServerParams #

serverWantClientCert :: ServerParams -> Bool #

Request a certificate from client.

Default: `False`

serverCACertificates :: ServerParams -> [SignedCertificate] #

This is a list of certificates from which the disinguished names are sent in certificate request messages. For TLS1.0, it should not be empty.

Default: '[]'

serverDHEParams :: ServerParams -> Maybe DHParams #

Server Optional Diffie Hellman parameters. Setting parameters is necessary for FFDHE key exchange when clients are not compatible with RFC 7919.

Value can be one of the standardized groups from module Network.TLS.Extra.FFDHE or custom parameters generated with `generateParams`.

Default: `Nothing`

serverHooks :: ServerParams -> ServerHooks #

See the default value of `ServerHooks`.

serverShared :: ServerParams -> Shared #

See the default value of `Shared`.

serverSupported :: ServerParams -> Supported #

See the default value of `Supported`.

serverDebug :: ServerParams -> DebugParams #

See the default value of `DebugParams`.

serverLimit :: ServerParams -> Limit #

serverEarlyDataSize :: ServerParams -> Int #

Server accepts this size of early data in TLS 1.3. 0 (or lower) means that the server does not accept early data.

Default: 0

serverTicketLifetime :: ServerParams -> Int #

Lifetime in seconds for session tickets generated by the server. Acceptable value range is 0 to 604800 (7 days).

Default: 7200 (2 hours)

## Shared

data Shared #

Parameters that are common to clients and servers.

#### Instances

Instances details

Default Shared # |
Instance details Defined in Network.TLS.Parameters Methods def :: Shared #
Show Shared # |
Instance details Defined in Network.TLS.Parameters Methods showsPrec :: Int -> Shared -> ShowS # show :: Shared -> String # showList :: [Shared] -> ShowS #

defaultShared :: Shared #

sharedCredentials :: Shared -> Credentials #

The list of certificates and private keys that a server will use as part of authentication to clients. Actual credentials that are used are selected dynamically from this list based on client capabilities. Additional credentials returned by `onServerNameIndication` are also considered.

When credential list is left empty (the default value), no key exchange can take place.

Default: `mempty`

sharedSessionManager :: Shared -> SessionManager #

Callbacks used by clients and servers in order to resume TLS sessions. The default implementation never resumes sessions. Package tls-session-manager provides an in-memory implementation.

Default: `noSessionManager`

sharedCAStore :: Shared -> CertificateStore #

A collection of trust anchors to be used by a client as part of validation of server certificates. This is set as first argument to function `onServerCertificate`. Package crypton-x509-system gives access to a default certificate store configured in the system.

Default: `mempty`

sharedValidationCache :: Shared -> ValidationCache #

Callbacks that may be used by a client to cache certificate validation results (positive or negative) and avoid expensive signature check. The default implementation does not have any caching.

See the default value of `ValidationCache`.

sharedHelloExtensions :: Shared -> [ExtensionRaw] #

Additional extensions to be sent during the Hello sequence.

For a client this is always included in message ClientHello. For a server, this is sent in messages ServerHello or EncryptedExtensions based on the TLS version.

Default: `[]`

## Client hooks

data ClientHooks #

A set of callbacks run by the clients for various corners of TLS establishment

#### Instances

Instances details

Default ClientHooks # |
Instance details Defined in Network.TLS.Parameters Methods def :: ClientHooks #
Show ClientHooks # |
Instance details Defined in Network.TLS.Parameters Methods showsPrec :: Int -> ClientHooks -> ShowS # show :: ClientHooks -> String # showList :: [ClientHooks] -> ShowS #

defaultClientHooks :: ClientHooks #

type OnCertificateRequest = ([CertificateType], Maybe [HashAndSignatureAlgorithm], [DistinguishedName]) -> IO (Maybe (CertificateChain, PrivKey)) #

Type for `onCertificateRequest`. This type synonym is to make document readable.

onCertificateRequest :: ClientHooks -> OnCertificateRequest #

This action is called when the a certificate request is received from the server. The callback argument is the information from the request. The server, at its discretion, may be willing to continue the handshake without a client certificate. Therefore, the callback is free to return `Nothing` to indicate that no client certificate should be sent, despite the server's request. In some cases it may be appropriate to get user consent before sending the certificate; the content of the user's certificate may be sensitive and intended only for specific servers.

The action should select a certificate chain of one of the given certificate types and one of the certificates in the chain should (if possible) be signed by one of the given distinguished names. Some servers, that don't have a narrow set of preferred issuer CAs, will send an empty `DistinguishedName` list, rather than send all the names from their trusted CA bundle. If the client does not have a certificate chaining to a matching CA, it may choose a default certificate instead.

Each certificate except the last should be signed by the following one. The returned private key must be for the first certificates in the chain. This key will be used to signing the certificate verify message.

The public key in the first certificate, and the matching returned private key must be compatible with one of the list of `HashAndSignatureAlgorithm` value when provided. TLS 1.3 changes the meaning of the list elements, adding explicit code points for each supported pair of hash and signature (public key) algorithms, rather than combining separate codes for the hash and key. For details see RFC 8446 section 4.2.3. When no compatible certificate chain is available, return `Nothing` if it is OK to continue without a client certificate. Returning a non-matching certificate should result in a handshake failure.

While the TLS version is not provided to the callback, the content of the `signature_algorithms` list provides a strong hint, since TLS 1.3 servers will generally list RSA pairs with a hash component of `Intrinsic` (`0x08`).

Note that is is the responsibility of this action to select a certificate matching one of the requested certificate types (public key algorithms). Returning a non-matching one will lead to handshake failure later.

Default: returns `Nothing` anyway.

type OnServerCertificate = CertificateStore -> ValidationCache -> ServiceID -> CertificateChain -> IO [FailedReason] #

Type for `onServerCertificate`. This type synonym is to make document readable.

onServerCertificate :: ClientHooks -> OnServerCertificate #

Used by the client to validate the server certificate. The default implementation calls `validateDefault` which validates according to the default hooks and checks provided by Data.X509.Validation. This can be replaced with a custom validation function using different settings.

The function is not expected to verify the key-usage extension of the end-entity certificate, as this depends on the dynamically-selected cipher and this part should not be cached. Key-usage verification is performed by the library internally.

Default: `validateDefault`

validateClientCertificate :: CertificateStore -> ValidationCache -> CertificateChain -> IO CertificateUsage #

A utility function for client authentication which can be used `onClientCertificate`.

Since: 2.1.7

onSuggestALPN :: ClientHooks -> IO (Maybe [ByteString]) #

This action is called when the client sends ClientHello to determine ALPN values such as '["h2", "http/1.1"]'.

Default: returns `Nothing`

onCustomFFDHEGroup :: ClientHooks -> DHParams -> DHPublic -> IO GroupUsage #

This action is called to validate DHE parameters when the server selected a finite-field group not part of the "Supported Groups Registry" or not part of `supportedGroups` list.

With TLS 1.3 custom groups have been removed from the protocol, so this callback is only used when the version negotiated is 1.2 or below.

The default behavior with (dh_p, dh_g, dh_size) and pub as follows:

1. rejecting if dh_p is even
2. rejecting unless 1 < dh_g && dh_g < dh_p - 1
3. rejecting unless 1 < dh_p && pub < dh_p - 1
4. rejecting if dh_size < 1024 (to prevent Logjam attack)

See RFC 7919 section 3.1 for recommandations.

onServerFinished :: ClientHooks -> Information -> IO () #

When a handshake is done, this hook can check `Information`.

## Server hooks

data ServerHooks #

A set of callbacks run by the server for various corners of the TLS establishment

#### Instances

Instances details

Default ServerHooks # |
Instance details Defined in Network.TLS.Parameters Methods def :: ServerHooks #
Show ServerHooks # |
Instance details Defined in Network.TLS.Parameters Methods showsPrec :: Int -> ServerHooks -> ShowS # show :: ServerHooks -> String # showList :: [ServerHooks] -> ShowS #

defaultServerHooks :: ServerHooks #

Default value for `ServerHooks`

onClientCertificate :: ServerHooks -> CertificateChain -> IO CertificateUsage #

This action is called when a client certificate chain is received from the client. When it returns a CertificateUsageReject value, the handshake is aborted.

The function is not expected to verify the key-usage extension of the certificate. This verification is performed by the library internally.

Default: returns the followings:

    CertificateUsageReject (CertificateRejectOther "no client certificates expected")

onUnverifiedClientCert :: ServerHooks -> IO Bool #

This action is called when the client certificate cannot be verified. Return `True` to accept the certificate anyway, or `False` to fail verification.

Default: returns `False`

onCipherChoosing :: ServerHooks -> Version -> [Cipher] -> Cipher #

Allow the server to choose the cipher relative to the the client version and the client list of ciphers.

This could be useful with old clients and as a workaround to the BEAST (where RC4 is sometimes prefered with TLS < 1.1)

The client cipher list cannot be empty.

Default: taking the head of ciphers.

onServerNameIndication :: ServerHooks -> Maybe HostName -> IO Credentials #

Allow the server to indicate additional credentials to be used depending on the host name indicated by the client.

This is most useful for transparent proxies where credentials must be generated on the fly according to the host the client is trying to connect to.

Returned credentials may be ignored if a client does not support the signature algorithms used in the certificate chain.

Default: returns `mempty`

onNewHandshake :: ServerHooks -> Measurement -> IO Bool #

At each new handshake, we call this hook to see if we allow handshake to happens.

Default: returns `True`

onALPNClientSuggest :: ServerHooks -> Maybe ([ByteString] -> IO ByteString) #

Allow the server to choose an application layer protocol suggested from the client through the ALPN (Application Layer Protocol Negotiation) extensions. If the server supports no protocols that the client advertises an empty `ByteString` should be returned.

Default: `Nothing`

onEncryptedExtensionsCreating :: ServerHooks -> [ExtensionRaw] -> IO [ExtensionRaw] #

Allow to modify extensions to be sent in EncryptedExtensions of TLS 1.3.

Default: `return`

data Measurement #

record some data about this connection.

#### Instances

Instances details

Show Measurement # |
Instance details Defined in Network.TLS.Measurement Methods showsPrec :: Int -> Measurement -> ShowS # show :: Measurement -> String # showList :: [Measurement] -> ShowS #
Eq Measurement # |
Instance details Defined in Network.TLS.Measurement Methods (==) :: Measurement -> Measurement -> Bool # (/=) :: Measurement -> Measurement -> Bool #

nbHandshakes :: Measurement -> Word32 #

number of handshakes on this context

bytesReceived :: Measurement -> Word32 #

bytes received since last handshake

bytesSent :: Measurement -> Word32 #

bytes sent since last handshake

## Supported

data Supported #

List all the supported algorithms, versions, ciphers, etc supported.

#### Instances

Instances details

Default Supported # |
Instance details Defined in Network.TLS.Parameters Methods def :: Supported #
Show Supported # |
Instance details Defined in Network.TLS.Parameters Methods showsPrec :: Int -> Supported -> ShowS # show :: Supported -> String # showList :: [Supported] -> ShowS #
Eq Supported # |
Instance details Defined in Network.TLS.Parameters Methods (==) :: Supported -> Supported -> Bool # (/=) :: Supported -> Supported -> Bool #

defaultSupported :: Supported #

supportedVersions :: Supported -> [Version] #

Supported versions by this context. On the client side, the highest version will be used to establish the connection. On the server side, the highest version that is less or equal than the client version will be chosen.

Versions should be listed in preference order, i.e. higher versions first.

Default: `[TLS13,TLS12]`

supportedCiphers :: Supported -> [Cipher] #

Supported cipher methods. The default is empty, specify a suitable cipher list. `ciphersuite_default` is often a good choice.

Default: `[]`

supportedCompressions :: Supported -> [Compression] #

Supported compressions methods. By default only the "null" compression is supported, which means no compression will be performed. Allowing other compression method is not advised as it causes a connection failure when TLS 1.3 is negotiated.

Default: `[nullCompression]`

supportedHashSignatures :: Supported -> [HashAndSignatureAlgorithm] #

All supported hash/signature algorithms pair for client certificate verification and server signature in (EC)DHE, ordered by decreasing priority.

This list is sent to the peer as part of the "signature_algorithms" extension. It is used to restrict accepted signatures received from the peer at TLS level (not in X.509 certificates), but only when the TLS version is 1.2 or above. In order to disable SHA-1 one must then also disable earlier protocol versions in `supportedVersions`.

The list also impacts the selection of possible algorithms when generating signatures.

Note: with TLS 1.3 some algorithms have been deprecated and will not be used even when listed in the parameter: MD5, SHA-1, SHA-224, RSA PKCS#1, DSA.

Default:

      [ (HashIntrinsic,     SignatureEd448)
      , (HashIntrinsic,     SignatureEd25519)
      , (Struct.HashSHA256, SignatureECDSA)
      , (Struct.HashSHA384, SignatureECDSA)
      , (Struct.HashSHA512, SignatureECDSA)
      , (HashIntrinsic,     SignatureRSApssRSAeSHA512)
      , (HashIntrinsic,     SignatureRSApssRSAeSHA384)
      , (HashIntrinsic,     SignatureRSApssRSAeSHA256)
      , (Struct.HashSHA512, SignatureRSA)
      , (Struct.HashSHA384, SignatureRSA)
      , (Struct.HashSHA256, SignatureRSA)
      , (Struct.HashSHA1,   SignatureRSA)
      , (Struct.HashSHA1,   SignatureDSA)
      ]

supportedSecureRenegotiation :: Supported -> Bool #

Secure renegotiation defined in RFC5746. If `True`, clients send the renegotiation_info extension. If `True`, servers handle the extension or the renegotiation SCSV then send the renegotiation_info extension.

Default: `True`

supportedClientInitiatedRenegotiation :: Supported -> Bool #

If `True`, renegotiation is allowed from the client side. This is vulnerable to DOS attacks. If `False`, renegotiation is allowed only from the server side via HelloRequest.

Default: `False`

supportedExtendedMainSecret :: Supported -> EMSMode #

The mode regarding extended main secret. Enabling this extension provides better security for TLS versions 1.2. TLS 1.3 provides the security properties natively and does not need the extension.

By default the extension is `RequireEMS`. So, the handshake will fail when the peer does not support the extension.

Default: `RequireEMS`

supportedSession :: Supported -> Bool #

Set if we support session.

Default: `True`

supportedFallbackScsv :: Supported -> Bool #

Support for fallback SCSV defined in RFC7507. If `True`, servers reject handshakes which suggest a lower protocol than the highest protocol supported.

Default: `True`

supportedEmptyPacket :: Supported -> Bool #

In ver <= TLS1.0, block ciphers using CBC are using CBC residue as IV, which can be guessed by an attacker. Hence, an empty packet is normally sent before a normal data packet, to prevent guessability. Some Microsoft TLS-based protocol implementations, however, consider these empty packets as a protocol violation and disconnect. If this parameter is `False`, empty packets will never be added, which is less secure, but might help in rare cases.

Default: `True`

supportedGroups :: Supported -> [Group] #

A list of supported elliptic curves and finite-field groups in the preferred order.

The list is sent to the server as part of the "supported_groups" extension. It is used in both clients and servers to restrict accepted groups in DH key exchange. Up until TLS v1.2, it is also used by a client to restrict accepted elliptic curves in ECDSA signatures.

The default value includes all groups with security strength of 128 bits or more.

Default: `[X25519,X448,P256,FFDHE2048,FFDHE3072,FFDHE4096,P384,FFDHE6144,FFDHE8192,P521]`

## Debug parameters

data DebugParams #

All settings should not be used in production

#### Instances

Instances details

Default DebugParams # |
Instance details Defined in Network.TLS.Parameters Methods def :: DebugParams #
Show DebugParams # |
Instance details Defined in Network.TLS.Parameters Methods showsPrec :: Int -> DebugParams -> ShowS # show :: DebugParams -> String # showList :: [DebugParams] -> ShowS #

defaultDebugParams :: DebugParams #

Default value for `DebugParams`

debugSeed :: DebugParams -> Maybe Seed #

Disable the true randomness in favor of deterministic seed that will produce a deterministic random from. This is useful for tests and debugging purpose. Do not use in production

Default: `Nothing`

debugPrintSeed :: DebugParams -> Seed -> IO () #

Add a way to print the seed that was randomly generated. re-using the same seed will reproduce the same randomness with `debugSeed`

Default: no printing

debugVersionForced :: DebugParams -> Maybe Version #

Force to choose this version in the server side.

Default: `Nothing`

debugKeyLogger :: DebugParams -> String -> IO () #

Printing main keys.

Default: no printing

## Limit parameters

data Limit #

Limitations for security.

Since: 2.1.7

#### Instances

Instances details

Show Limit # |
Instance details Defined in Network.TLS.Parameters Methods showsPrec :: Int -> Limit -> ShowS # show :: Limit -> String # showList :: [Limit] -> ShowS #
Eq Limit # |
Instance details Defined in Network.TLS.Parameters Methods (==) :: Limit -> Limit -> Bool # (/=) :: Limit -> Limit -> Bool #

defaultLimit :: Limit #

Default value for `Limit`.

limitHandshakeFragment :: Limit -> Int #

The limit to accept the number of each handshake message. For instance, a nasty client may send many fragments of client certificate.

Default: 32

limitRecordSize :: Limit -> Maybe Int #

Record size limit defined in RFC 8449.

If `Nothing`, the "record_size_limit" extension is not used.

In the case of `Just`: A client sends the "record_size_limit" extension with this value to the server. A server sends back this extension with its own value if a client sends the extension. When negotiated, both my limit and peer's limit are enabled for protected communication.

Default: Nothing

# Shared parameters

## Credentials

newtype Credentials #

Constructors

Credentials [Credential] |

#### Instances

Instances details

Monoid Credentials # |
Instance details Defined in Network.TLS.Credentials Methods mempty :: Credentials # mappend :: Credentials -> Credentials -> Credentials # mconcat :: [Credentials] -> Credentials #
Semigroup Credentials # |
Instance details Defined in Network.TLS.Credentials Methods (<>) :: Credentials -> Credentials -> Credentials # sconcat :: NonEmpty Credentials -> Credentials # stimes :: Integral b => b -> Credentials -> Credentials #
Show Credentials # |
Instance details Defined in Network.TLS.Credentials Methods showsPrec :: Int -> Credentials -> ShowS # show :: Credentials -> String # showList :: [Credentials] -> ShowS #

type Credential = (CertificateChain, PrivKey) #

credentialLoadX509 #

Arguments

:: FilePath | public certificate (X.509 format)
-> FilePath | private key associated
-> IO (Either String Credential) |

try to create a new credential object from a public certificate and the associated private key that are stored on the filesystem in PEM format.

credentialLoadX509FromMemory :: ByteString -> ByteString -> Either String Credential #

similar to `credentialLoadX509` but take the certificate and private key from memory instead of from the filesystem.

credentialLoadX509Chain #

Arguments

:: FilePath | public certificate (X.509 format)
-> [FilePath] | chain certificates (X.509 format)
-> FilePath | private key associated
-> IO (Either String Credential) |

similar to `credentialLoadX509` but also allow specifying chain certificates.

credentialLoadX509ChainFromMemory :: ByteString -> [ByteString] -> ByteString -> Either String Credential #

similar to `credentialLoadX509FromMemory` but also allow specifying chain certificates.

## Session manager

data SessionManager #

A session manager. In the server side, all fields are used. In the client side, only `sessionEstablish` is used.

noSessionManager :: SessionManager #

The session manager to do nothing.

sessionResume :: SessionManager -> SessionIDorTicket -> IO (Maybe SessionData) #

Used on TLS 1.2/1.3 servers to lookup `SessionData` with `SessionID` or to decrypt `Ticket` to get `SessionData`.

sessionResumeOnlyOnce :: SessionManager -> SessionIDorTicket -> IO (Maybe SessionData) #

Used for 0RTT on TLS 1.3 servers to lookup `SessionData` with `SessionID` or to decrypt `Ticket` to get `SessionData`.

sessionEstablish :: SessionManager -> SessionIDorTicket -> SessionData -> IO (Maybe Ticket) #

Used on TLS 1.2/1.3 servers to store `SessionData` with `SessionID` or to encrypt `SessionData` to get `Ticket` ignoring `SessionID`. Used on TLS 1.2/1.3 clients to store `SessionData` with `SessionIDorTicket` and then return `Nothing`. For clients, only this field should be set with `noSessionManager`.

sessionInvalidate :: SessionManager -> SessionIDorTicket -> IO () #

Used TLS 1.2 servers to delete `SessionData` with `SessionID` on errors.

sessionUseTicket :: SessionManager -> Bool #

Used on TLS 1.2 servers to decide to use `SessionID` or `Ticket`. Note that `SessionID` and `Ticket` are integrated as identity in TLS 1.3.

type SessionID = ByteString #

A session ID

type SessionIDorTicket = ByteString #

Identity

type Ticket = ByteString #

Encrypted session ticket (encrypt(encode `SessionData`)).

## Session data

data SessionData #

Session data to resume

#### Instances

Instances details

Generic SessionData # |
Instance details Defined in Network.TLS.Types.Session Associated Types
type Rep SessionData |
Instance details Defined in Network.TLS.Types.Session type Rep SessionData = D1 ('MetaData "SessionData" "Network.TLS.Types.Session" "tls-2.1.7-314DFAYuvw7BwCVqQbeTfT" 'False) (C1 ('MetaCons "SessionData" 'PrefixI 'True) (((S1 ('MetaSel ('Just "sessionVersion") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 Version) :*: S1 ('MetaSel ('Just "sessionCipher") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 CipherID)) :*: (S1 ('MetaSel ('Just "sessionCompression") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 CompressionID) :*: (S1 ('MetaSel ('Just "sessionClientSNI") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe HostName)) :*: S1 ('MetaSel ('Just "sessionSecret") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 ByteString)))) :*: ((S1 ('MetaSel ('Just "sessionGroup") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Group)) :*: S1 ('MetaSel ('Just "sessionTicketInfo") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe TLS13TicketInfo))) :*: (S1 ('MetaSel ('Just "sessionALPN") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe ByteString)) :*: (S1 ('MetaSel ('Just "sessionMaxEarlyDataSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 Int) :*: S1 ('MetaSel ('Just "sessionFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 [SessionFlag]))))))
Methods from :: SessionData -> Rep SessionData x # to :: Rep SessionData x -> SessionData #
Show SessionData # |
Instance details Defined in Network.TLS.Types.Session Methods showsPrec :: Int -> SessionData -> ShowS # show :: SessionData -> String # showList :: [SessionData] -> ShowS #
Eq SessionData # |
Instance details Defined in Network.TLS.Types.Session Methods (==) :: SessionData -> SessionData -> Bool # (/=) :: SessionData -> SessionData -> Bool #
Serialise SessionData # |
Instance details Defined in Network.TLS.Types.Session Methods encode :: SessionData -> Encoding # decode :: Decoder s SessionData # encodeList :: [SessionData] -> Encoding # decodeList :: Decoder s [SessionData] #
type Rep SessionData # |
Instance details Defined in Network.TLS.Types.Session type Rep SessionData = D1 ('MetaData "SessionData" "Network.TLS.Types.Session" "tls-2.1.7-314DFAYuvw7BwCVqQbeTfT" 'False) (C1 ('MetaCons "SessionData" 'PrefixI 'True) (((S1 ('MetaSel ('Just "sessionVersion") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 Version) :*: S1 ('MetaSel ('Just "sessionCipher") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 CipherID)) :*: (S1 ('MetaSel ('Just "sessionCompression") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 CompressionID) :*: (S1 ('MetaSel ('Just "sessionClientSNI") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe HostName)) :*: S1 ('MetaSel ('Just "sessionSecret") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 ByteString)))) :*: ((S1 ('MetaSel ('Just "sessionGroup") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Group)) :*: S1 ('MetaSel ('Just "sessionTicketInfo") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe TLS13TicketInfo))) :*: (S1 ('MetaSel ('Just "sessionALPN") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe ByteString)) :*: (S1 ('MetaSel ('Just "sessionMaxEarlyDataSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 Int) :*: S1 ('MetaSel ('Just "sessionFlags") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 [SessionFlag]))))))

sessionVersion :: SessionData -> Version #

sessionCipher :: SessionData -> CipherID #

sessionCompression :: SessionData -> CompressionID #

sessionClientSNI :: SessionData -> Maybe HostName #

sessionSecret :: SessionData -> ByteString #

sessionGroup :: SessionData -> Maybe Group #

sessionTicketInfo :: SessionData -> Maybe TLS13TicketInfo #

sessionALPN :: SessionData -> Maybe ByteString #

sessionMaxEarlyDataSize :: SessionData -> Int #

sessionFlags :: SessionData -> [SessionFlag] #

data SessionFlag #

Some session flags

Constructors

SessionEMS | Session created with Extended Main Secret

#### Instances

Instances details

Enum SessionFlag # |
Instance details Defined in Network.TLS.Types.Session Methods succ :: SessionFlag -> SessionFlag # pred :: SessionFlag -> SessionFlag # toEnum :: Int -> SessionFlag # fromEnum :: SessionFlag -> Int # enumFrom :: SessionFlag -> [SessionFlag] # enumFromThen :: SessionFlag -> SessionFlag -> [SessionFlag] # enumFromTo :: SessionFlag -> SessionFlag -> [SessionFlag] # enumFromThenTo :: SessionFlag -> SessionFlag -> SessionFlag -> [SessionFlag] #
Generic SessionFlag # |
Instance details Defined in Network.TLS.Types.Session Associated Types
type Rep SessionFlag |
Instance details Defined in Network.TLS.Types.Session type Rep SessionFlag = D1 ('MetaData "SessionFlag" "Network.TLS.Types.Session" "tls-2.1.7-314DFAYuvw7BwCVqQbeTfT" 'False) (C1 ('MetaCons "SessionEMS" 'PrefixI 'False) (U1 :: Type -> Type))
Methods from :: SessionFlag -> Rep SessionFlag x # to :: Rep SessionFlag x -> SessionFlag #
Show SessionFlag # |
Instance details Defined in Network.TLS.Types.Session Methods showsPrec :: Int -> SessionFlag -> ShowS # show :: SessionFlag -> String # showList :: [SessionFlag] -> ShowS #
Eq SessionFlag # |
Instance details Defined in Network.TLS.Types.Session Methods (==) :: SessionFlag -> SessionFlag -> Bool # (/=) :: SessionFlag -> SessionFlag -> Bool #
Serialise SessionFlag # |
Instance details Defined in Network.TLS.Types.Session Methods encode :: SessionFlag -> Encoding # decode :: Decoder s SessionFlag # encodeList :: [SessionFlag] -> Encoding # decodeList :: Decoder s [SessionFlag] #
type Rep SessionFlag # |
Instance details Defined in Network.TLS.Types.Session type Rep SessionFlag = D1 ('MetaData "SessionFlag" "Network.TLS.Types.Session" "tls-2.1.7-314DFAYuvw7BwCVqQbeTfT" 'False) (C1 ('MetaCons "SessionEMS" 'PrefixI 'False) (U1 :: Type -> Type))

data TLS13TicketInfo #

#### Instances

Instances details

Generic TLS13TicketInfo # |
Instance details Defined in Network.TLS.Types.Session Associated Types
type Rep TLS13TicketInfo |
Instance details Defined in Network.TLS.Types.Session type Rep TLS13TicketInfo
Methods from :: TLS13TicketInfo -> Rep TLS13TicketInfo x # to :: Rep TLS13TicketInfo x -> TLS13TicketInfo #
Show TLS13TicketInfo # |
Instance details Defined in Network.TLS.Types.Session Methods showsPrec :: Int -> TLS13TicketInfo -> ShowS # show :: TLS13TicketInfo -> String # showList :: [TLS13TicketInfo] -> ShowS #
Eq TLS13TicketInfo # |
Instance details Defined in Network.TLS.Types.Session Methods (==) :: TLS13TicketInfo -> TLS13TicketInfo -> Bool # (/=) :: TLS13TicketInfo -> TLS13TicketInfo -> Bool #
Serialise TLS13TicketInfo # |
Instance details Defined in Network.TLS.Types.Session Methods encode :: TLS13TicketInfo -> Encoding # decode :: Decoder s TLS13TicketInfo # encodeList :: [TLS13TicketInfo] -> Encoding # decodeList :: Decoder s [TLS13TicketInfo] #
type Rep TLS13TicketInfo # |
Instance details Defined in Network.TLS.Types.Session type Rep TLS13TicketInfo

is0RTTPossible :: SessionData -> Bool #

## Validation Cache

data ValidationCache #

All the callbacks needed for querying and adding to the cache.

Constructors

ValidationCache |
Fields cacheQuery :: ValidationCacheQueryCallback cache querying callback cacheAdd :: ValidationCacheAddCallback cache adding callback

#### Instances

Instances details

Default ValidationCache |
Instance details Defined in Data.X509.Validation.Cache Methods def :: ValidationCache #

defaultValidationCache :: ValidationCache #

type ValidationCacheQueryCallback #

Arguments

= ServiceID | connection's identification
-> Fingerprint | fingerprint of the leaf certificate
-> Certificate | leaf certificate
-> IO ValidationCacheResult | return if the operation is succesful or not

Validation cache query callback type

type ValidationCacheAddCallback #

Arguments

= ServiceID | connection's identification
-> Fingerprint | fingerprint of the leaf certificate
-> Certificate | leaf certificate
-> IO () |

Validation cache callback type

data ValidationCacheResult #

The result of a cache query

Constructors

ValidationCachePass | cache allow this fingerprint to go through
ValidationCacheDenied String | cache denied this fingerprint for further validation
ValidationCacheUnknown | unknown fingerprint in cache

#### Instances

Instances details

Show ValidationCacheResult |
Instance details Defined in Data.X509.Validation.Cache Methods showsPrec :: Int -> ValidationCacheResult -> ShowS # show :: ValidationCacheResult -> String # showList :: [ValidationCacheResult] -> ShowS #
Eq ValidationCacheResult |
Instance details Defined in Data.X509.Validation.Cache Methods (==) :: ValidationCacheResult -> ValidationCacheResult -> Bool # (/=) :: ValidationCacheResult -> ValidationCacheResult -> Bool #

exceptionValidationCache :: [(ServiceID, Fingerprint)] -> ValidationCache #

create a simple constant cache that list exceptions to the certification validation. Typically this is use to allow self-signed certificates for specific use, with out-of-bounds user checks.

No fingerprints will be added after the instance is created.

The underlying structure for the check is kept as a list, as usually the exception list will be short, but when the list go above a dozen exceptions it's recommended to use another cache mechanism with a faster lookup mechanism (hashtable, map, etc).

Note that only one fingerprint is allowed per ServiceID, for other use, another cache mechanism need to be use.

# Types

## For `Supported`

newtype Version #

Versions known to TLS

Constructors

Version Word16 |

Bundled Patterns

pattern TLS12 :: Version |
pattern TLS13 :: Version |
pattern SSL2 :: Version |
pattern SSL3 :: Version |
pattern TLS10 :: Version |
pattern TLS11 :: Version |

#### Instances

Instances details

Generic Version # |
Instance details Defined in Network.TLS.Types.Version Associated Types
type Rep Version |
Instance details Defined in Network.TLS.Types.Version type Rep Version = D1 ('MetaData "Version" "Network.TLS.Types.Version" "tls-2.1.7-314DFAYuvw7BwCVqQbeTfT" 'True) (C1 ('MetaCons "Version" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word16)))
Methods from :: Version -> Rep Version x # to :: Rep Version x -> Version #
Show Version # |
Instance details Defined in Network.TLS.Types.Version Methods showsPrec :: Int -> Version -> ShowS # show :: Version -> String # showList :: [Version] -> ShowS #
Eq Version # |
Instance details Defined in Network.TLS.Types.Version Methods (==) :: Version -> Version -> Bool # (/=) :: Version -> Version -> Bool #
Ord Version # |
Instance details Defined in Network.TLS.Types.Version Methods compare :: Version -> Version -> Ordering # (<) :: Version -> Version -> Bool # (<=) :: Version -> Version -> Bool # (>) :: Version -> Version -> Bool # (>=) :: Version -> Version -> Bool # max :: Version -> Version -> Version # min :: Version -> Version -> Version #
Serialise Version # |
Instance details Defined in Network.TLS.Types.Version Methods encode :: Version -> Encoding # decode :: Decoder s Version # encodeList :: [Version] -> Encoding # decodeList :: Decoder s [Version] #
type Rep Version # |
Instance details Defined in Network.TLS.Types.Version type Rep Version = D1 ('MetaData "Version" "Network.TLS.Types.Version" "tls-2.1.7-314DFAYuvw7BwCVqQbeTfT" 'True) (C1 ('MetaCons "Version" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word16)))

data Compression #

every compression need to be wrapped in this, to fit in structure

Constructors

CompressionC a => Compression a |

#### Instances

Instances details

Show Compression # |
Instance details Defined in Network.TLS.Compression Methods showsPrec :: Int -> Compression -> ShowS # show :: Compression -> String # showList :: [Compression] -> ShowS #
Eq Compression # |
Instance details Defined in Network.TLS.Compression Methods (==) :: Compression -> Compression -> Bool # (/=) :: Compression -> Compression -> Bool #

nullCompression :: Compression #

default null compression

type HashAndSignatureAlgorithm = (HashAlgorithm, SignatureAlgorithm) #

supportedSignatureSchemes :: [HashAndSignatureAlgorithm] #

newtype HashAlgorithm #

Constructors

HashAlgorithm |
Fields fromHashAlgorithm :: Word8

Bundled Patterns

pattern HashMD5 :: HashAlgorithm |
pattern HashSHA1 :: HashAlgorithm |
pattern HashSHA224 :: HashAlgorithm |
pattern HashSHA256 :: HashAlgorithm |
pattern HashSHA384 :: HashAlgorithm |
pattern HashSHA512 :: HashAlgorithm |
pattern HashNone :: HashAlgorithm |
pattern HashIntrinsic :: HashAlgorithm |

#### Instances

Instances details

Show HashAlgorithm # |
Instance details Defined in Network.TLS.HashAndSignature Methods showsPrec :: Int -> HashAlgorithm -> ShowS # show :: HashAlgorithm -> String # showList :: [HashAlgorithm] -> ShowS #
Eq HashAlgorithm # |
Instance details Defined in Network.TLS.HashAndSignature Methods (==) :: HashAlgorithm -> HashAlgorithm -> Bool # (/=) :: HashAlgorithm -> HashAlgorithm -> Bool #
Show (HashAlgorithm, SignatureAlgorithm) # |
Instance details Defined in Network.TLS.HashAndSignature Methods showsPrec :: Int -> (HashAlgorithm, SignatureAlgorithm) -> ShowS # show :: (HashAlgorithm, SignatureAlgorithm) -> String # showList :: [(HashAlgorithm, SignatureAlgorithm)] -> ShowS #

newtype SignatureAlgorithm #

Constructors

SignatureAlgorithm |
Fields fromSignatureAlgorithm :: Word8

Bundled Patterns

pattern SignatureAnonymous :: SignatureAlgorithm |
pattern SignatureRSA :: SignatureAlgorithm |
pattern SignatureDSA :: SignatureAlgorithm |
pattern SignatureECDSA :: SignatureAlgorithm |
pattern SignatureRSApssRSAeSHA256 :: SignatureAlgorithm |
pattern SignatureRSApssRSAeSHA384 :: SignatureAlgorithm |
pattern SignatureRSApssRSAeSHA512 :: SignatureAlgorithm |
pattern SignatureEd25519 :: SignatureAlgorithm |
pattern SignatureEd448 :: SignatureAlgorithm |
pattern SignatureRSApsspssSHA256 :: SignatureAlgorithm |
pattern SignatureRSApsspssSHA384 :: SignatureAlgorithm |
pattern SignatureRSApsspssSHA512 :: SignatureAlgorithm |
pattern SignatureBrainpoolP256 :: SignatureAlgorithm |
pattern SignatureBrainpoolP384 :: SignatureAlgorithm |
pattern SignatureBrainpoolP512 :: SignatureAlgorithm |

#### Instances

Instances details

Show SignatureAlgorithm # |
Instance details Defined in Network.TLS.HashAndSignature Methods showsPrec :: Int -> SignatureAlgorithm -> ShowS # show :: SignatureAlgorithm -> String # showList :: [SignatureAlgorithm] -> ShowS #
Eq SignatureAlgorithm # |
Instance details Defined in Network.TLS.HashAndSignature Methods (==) :: SignatureAlgorithm -> SignatureAlgorithm -> Bool # (/=) :: SignatureAlgorithm -> SignatureAlgorithm -> Bool #
Show (HashAlgorithm, SignatureAlgorithm) # |
Instance details Defined in Network.TLS.HashAndSignature Methods showsPrec :: Int -> (HashAlgorithm, SignatureAlgorithm) -> ShowS # show :: (HashAlgorithm, SignatureAlgorithm) -> String # showList :: [(HashAlgorithm, SignatureAlgorithm)] -> ShowS #

newtype Group #

Constructors

Group Word16 |

Bundled Patterns

pattern P256 :: Group |
pattern P384 :: Group |
pattern P521 :: Group |
pattern X25519 :: Group |
pattern X448 :: Group |
pattern FFDHE2048 :: Group |
pattern FFDHE3072 :: Group |
pattern FFDHE4096 :: Group |
pattern FFDHE6144 :: Group |
pattern FFDHE8192 :: Group |

#### Instances

Instances details

Generic Group # |
Instance details Defined in Network.TLS.Crypto.Types Associated Types
type Rep Group |
Instance details Defined in Network.TLS.Crypto.Types type Rep Group = D1 ('MetaData "Group" "Network.TLS.Crypto.Types" "tls-2.1.7-314DFAYuvw7BwCVqQbeTfT" 'True) (C1 ('MetaCons "Group" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word16)))
Methods from :: Group -> Rep Group x # to :: Rep Group x -> Group #
Show Group # |
Instance details Defined in Network.TLS.Crypto.Types Methods showsPrec :: Int -> Group -> ShowS # show :: Group -> String # showList :: [Group] -> ShowS #
Eq Group # |
Instance details Defined in Network.TLS.Crypto.Types Methods (==) :: Group -> Group -> Bool # (/=) :: Group -> Group -> Bool #
Serialise Group # |
Instance details Defined in Network.TLS.Crypto.Types Methods encode :: Group -> Encoding # decode :: Decoder s Group # encodeList :: [Group] -> Encoding # decodeList :: Decoder s [Group] #
type Rep Group # |
Instance details Defined in Network.TLS.Crypto.Types type Rep Group = D1 ('MetaData "Group" "Network.TLS.Crypto.Types" "tls-2.1.7-314DFAYuvw7BwCVqQbeTfT" 'True) (C1 ('MetaCons "Group" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word16)))

supportedNamedGroups :: [Group] #

data EMSMode #

Client or server policy regarding Extended Main Secret

Constructors

NoEMS | Extended Main Secret is not used
AllowEMS | Extended Main Secret is allowed
RequireEMS | Extended Main Secret is required

#### Instances

Instances details

Show EMSMode # |
Instance details Defined in Network.TLS.Parameters Methods showsPrec :: Int -> EMSMode -> ShowS # show :: EMSMode -> String # showList :: [EMSMode] -> ShowS #
Eq EMSMode # |
Instance details Defined in Network.TLS.Parameters Methods (==) :: EMSMode -> EMSMode -> Bool # (/=) :: EMSMode -> EMSMode -> Bool #

## For parameters and hooks

type DHParams = Params #

type DHPublic = PublicNumber #

data GroupUsage #

Group usage callback possible return values.

Constructors

GroupUsageValid | usage of group accepted
GroupUsageInsecure | usage of group provides insufficient security
GroupUsageUnsupported String | usage of group rejected for other reason (specified as string)
GroupUsageInvalidPublic | usage of group with an invalid public value

#### Instances

Instances details

Show GroupUsage # |
Instance details Defined in Network.TLS.Parameters Methods showsPrec :: Int -> GroupUsage -> ShowS # show :: GroupUsage -> String # showList :: [GroupUsage] -> ShowS #
Eq GroupUsage # |
Instance details Defined in Network.TLS.Parameters Methods (==) :: GroupUsage -> GroupUsage -> Bool # (/=) :: GroupUsage -> GroupUsage -> Bool #

data CertificateUsage #

Certificate Usage callback possible returns values.

Constructors

CertificateUsageAccept | usage of certificate accepted
CertificateUsageReject CertificateRejectReason | usage of certificate rejected

#### Instances

Instances details

Show CertificateUsage # |
Instance details Defined in Network.TLS.X509 Methods showsPrec :: Int -> CertificateUsage -> ShowS # show :: CertificateUsage -> String # showList :: [CertificateUsage] -> ShowS #
Eq CertificateUsage # |
Instance details Defined in Network.TLS.X509 Methods (==) :: CertificateUsage -> CertificateUsage -> Bool # (/=) :: CertificateUsage -> CertificateUsage -> Bool #

data CertificateRejectReason #

Certificate and Chain rejection reason

Constructors

CertificateRejectExpired |
CertificateRejectRevoked |
CertificateRejectUnknownCA |
CertificateRejectAbsent |
CertificateRejectOther String |

#### Instances

Instances details

Show CertificateRejectReason # |
Instance details Defined in Network.TLS.X509 Methods showsPrec :: Int -> CertificateRejectReason -> ShowS # show :: CertificateRejectReason -> String # showList :: [CertificateRejectReason] -> ShowS #
Eq CertificateRejectReason # |
Instance details Defined in Network.TLS.X509 Methods (==) :: CertificateRejectReason -> CertificateRejectReason -> Bool # (/=) :: CertificateRejectReason -> CertificateRejectReason -> Bool #

newtype CertificateType #

Some of the IANA registered code points for `CertificateType` are not currently supported by the library. Nor should they be, they're are either unwise, obsolete or both. There's no point in conveying these to the user in the client certificate request callback. The request callback will be filtered to exclude unsupported values. If the user cannot find a certificate for a supported code point, we'll go ahead without a client certificate and hope for the best, unless the user's callback decides to throw an exception.

Constructors

CertificateType |
Fields fromCertificateType :: Word8

Bundled Patterns

pattern CertificateType_RSA_Sign :: CertificateType | TLS10 and up, RFC5246
pattern CertificateType_DSA_Sign :: CertificateType | TLS10 and up, RFC5246
pattern CertificateType_ECDSA_Sign :: CertificateType | TLS10 and up, RFC8422
pattern CertificateType_Ed25519_Sign :: CertificateType |
pattern CertificateType_Ed448_Sign :: CertificateType |

#### Instances

Instances details

Show CertificateType # |
Instance details Defined in Network.TLS.Struct Methods showsPrec :: Int -> CertificateType -> ShowS # show :: CertificateType -> String # showList :: [CertificateType] -> ShowS #
Eq CertificateType # |
Instance details Defined in Network.TLS.Struct Methods (==) :: CertificateType -> CertificateType -> Bool # (/=) :: CertificateType -> CertificateType -> Bool #
Ord CertificateType # |
Instance details Defined in Network.TLS.Struct Methods compare :: CertificateType -> CertificateType -> Ordering # (<) :: CertificateType -> CertificateType -> Bool # (<=) :: CertificateType -> CertificateType -> Bool # (>) :: CertificateType -> CertificateType -> Bool # (>=) :: CertificateType -> CertificateType -> Bool # max :: CertificateType -> CertificateType -> CertificateType # min :: CertificateType -> CertificateType -> CertificateType #

newtype CertificateChain #

A chain of X.509 certificates in exact form.

Constructors

CertificateChain [SignedExact Certificate] |

#### Instances

Instances details

Show CertificateChain |
Instance details Defined in Data.X509.CertificateChain Methods showsPrec :: Int -> CertificateChain -> ShowS # show :: CertificateChain -> String # showList :: [CertificateChain] -> ShowS #
Show Credential # |
Instance details Defined in Network.TLS.Credentials Methods showsPrec :: Int -> Credential -> ShowS # show :: Credential -> String # showList :: [Credential] -> ShowS #
Eq CertificateChain |
Instance details Defined in Data.X509.CertificateChain Methods (==) :: CertificateChain -> CertificateChain -> Bool # (/=) :: CertificateChain -> CertificateChain -> Bool #

type HostName = String #

Either a host name e.g., `"haskell.org"` or a numeric host address string consisting of a dotted decimal IPv4 address or an IPv6 address e.g., `"192.168.0.1"`.

data MaxFragmentEnum #

Constructors

MaxFragment512 |
MaxFragment1024 |
MaxFragment2048 |
MaxFragment4096 |

#### Instances

Instances details

Show MaxFragmentEnum # |
Instance details Defined in Network.TLS.Extension Methods showsPrec :: Int -> MaxFragmentEnum -> ShowS # show :: MaxFragmentEnum -> String # showList :: [MaxFragmentEnum] -> ShowS #
Eq MaxFragmentEnum # |
Instance details Defined in Network.TLS.Extension Methods (==) :: MaxFragmentEnum -> MaxFragmentEnum -> Bool # (/=) :: MaxFragmentEnum -> MaxFragmentEnum -> Bool #

# Advanced APIs

## Backend

ctxBackend :: Context -> Backend #

return the backend object associated with this context

contextFlush :: Context -> IO () #

A shortcut for 'backendFlush . ctxBackend'.

contextClose :: Context -> IO () #

A shortcut for 'backendClose . ctxBackend'.

## Information gathering

data Information #

Information related to a running context, e.g. current cipher

#### Instances

Instances details

Show Information # |
Instance details Defined in Network.TLS.Parameters Methods showsPrec :: Int -> Information -> ShowS # show :: Information -> String # showList :: [Information] -> ShowS #
Eq Information # |
Instance details Defined in Network.TLS.Parameters Methods (==) :: Information -> Information -> Bool # (/=) :: Information -> Information -> Bool #

contextGetInformation :: Context -> IO (Maybe Information) #

Information about the current context

infoVersion :: Information -> Version #

infoCipher :: Information -> Cipher #

infoCompression :: Information -> Compression #

infoMainSecret :: Information -> Maybe ByteString #

infoExtendedMainSecret :: Information -> Bool #

infoClientRandom :: Information -> Maybe ClientRandom #

infoServerRandom :: Information -> Maybe ServerRandom #

infoSupportedGroup :: Information -> Maybe Group #

infoTLS12Resumption :: Information -> Bool #

infoTLS13HandshakeMode :: Information -> Maybe HandshakeMode13 #

infoIsEarlyDataAccepted :: Information -> Bool #

data ClientRandom #

#### Instances

Instances details

Show ClientRandom # |
Instance details Defined in Network.TLS.Struct Methods showsPrec :: Int -> ClientRandom -> ShowS # show :: ClientRandom -> String # showList :: [ClientRandom] -> ShowS #
Eq ClientRandom # |
Instance details Defined in Network.TLS.Struct Methods (==) :: ClientRandom -> ClientRandom -> Bool # (/=) :: ClientRandom -> ClientRandom -> Bool #

data ServerRandom #

#### Instances

Instances details

Show ServerRandom # |
Instance details Defined in Network.TLS.Struct Methods showsPrec :: Int -> ServerRandom -> ShowS # show :: ServerRandom -> String # showList :: [ServerRandom] -> ShowS #
Eq ServerRandom # |
Instance details Defined in Network.TLS.Struct Methods (==) :: ServerRandom -> ServerRandom -> Bool # (/=) :: ServerRandom -> ServerRandom -> Bool #

unClientRandom :: ClientRandom -> ByteString #

unServerRandom :: ServerRandom -> ByteString #

data HandshakeMode13 #

Type to show which handshake mode is used in TLS 1.3.

Constructors

FullHandshake | Full handshake is used.
HelloRetryRequest | Full handshake is used with hello retry request.
PreSharedKey | Server authentication is skipped.
RTT0 | Server authentication is skipped and early data is sent.

#### Instances

Instances details

Show HandshakeMode13 # |
Instance details Defined in Network.TLS.Handshake.State Methods showsPrec :: Int -> HandshakeMode13 -> ShowS # show :: HandshakeMode13 -> String # showList :: [HandshakeMode13] -> ShowS #
Eq HandshakeMode13 # |
Instance details Defined in Network.TLS.Handshake.State Methods (==) :: HandshakeMode13 -> HandshakeMode13 -> Bool # (/=) :: HandshakeMode13 -> HandshakeMode13 -> Bool #

getClientCertificateChain :: Context -> IO (Maybe CertificateChain) #

Getting certificates from a client, if any. Note that the certificates are not sent by a client on resumption even if client authentication is required. So, this API would be replaced by the one which can treat both cases of full-negotiation and resumption.

## Negotiated

getNegotiatedProtocol :: MonadIO m => Context -> m (Maybe ByteString) #

If the ALPN extensions have been used, this will return get the protocol agreed upon.

getClientSNI :: MonadIO m => Context -> m (Maybe HostName) #

If the Server Name Indication extension has been used, return the hostname specified by the client.

## Post-handshake actions

updateKey :: MonadIO m => Context -> KeyUpdateRequest -> m Bool #

Updating appication traffic secrets for TLS 1.3. If this API is called for TLS 1.3, `True` is returned. Otherwise, `False` is returned.

data KeyUpdateRequest #

How to update keys in TLS 1.3

Constructors

OneWay | Unidirectional key update
TwoWay | Bidirectional key update (normal case)

#### Instances

Instances details

Show KeyUpdateRequest # |
Instance details Defined in Network.TLS.Core Methods showsPrec :: Int -> KeyUpdateRequest -> ShowS # show :: KeyUpdateRequest -> String # showList :: [KeyUpdateRequest] -> ShowS #
Eq KeyUpdateRequest # |
Instance details Defined in Network.TLS.Core Methods (==) :: KeyUpdateRequest -> KeyUpdateRequest -> Bool # (/=) :: KeyUpdateRequest -> KeyUpdateRequest -> Bool #

requestCertificate :: Context -> IO Bool #

Post-handshake certificate request with TLS 1.3. Returns `True` if the request was possible, i.e. if TLS 1.3 is used and the remote client supports post-handshake authentication.

getTLSUnique :: Context -> IO (Maybe ByteString) #

Getting the "tls-unique" channel binding for TLS 1.2 (RFC5929). For TLS 1.3, `Nothing` is returned. `supportedExtendedMainSecret` must be `RequireEMS` But in general, it is highly recommended to upgrade to TLS 1.3 and use the "tls-exporter" channel binding via `getTLSExporter`.

getTLSExporter :: Context -> IO (Maybe ByteString) #

Getting the "tls-exporter" channel binding for TLS 1.3 (RFC9266). For TLS 1.2, `Nothing` is returned.

getTLSServerEndPoint :: Context -> IO (Maybe ByteString) #

Getting the "tls-server-end-point" channel binding for TLS 1.2 (RFC5929). For 1.3, there is no specifications for how to create it. In this implementation, a certificate chain without extensions is hashed like TLS 1.2.

getFinished :: Context -> IO (Maybe VerifyData) #

Deprecated: Use getTLSUnique instead

Getting TLS Finished sent to peer.

getPeerFinished :: Context -> IO (Maybe VerifyData) #

Deprecated: Use getTLSUnique instead

Getting TLS Finished received from peer.

## Modifying hooks in context

data Hooks #

A collection of hooks actions.

#### Instances

Instances details

Default Hooks # |
Instance details Defined in Network.TLS.Hooks Methods def :: Hooks #

defaultHooks :: Hooks #

hookRecvHandshake :: Hooks -> Handshake -> IO Handshake #

called at each handshake message received

hookRecvHandshake13 :: Hooks -> Handshake13 -> IO Handshake13 #

called at each handshake message received for TLS 1.3

hookRecvCertificates :: Hooks -> CertificateChain -> IO () #

called at each certificate chain message received

hookLogging :: Hooks -> Logging #

hooks on IO and packets, receiving and sending.

contextModifyHooks :: Context -> (Hooks -> Hooks) -> IO () #

data Handshake #

#### Instances

Instances details

Show Handshake # |
Instance details Defined in Network.TLS.Struct Methods showsPrec :: Int -> Handshake -> ShowS # show :: Handshake -> String # showList :: [Handshake] -> ShowS #
Eq Handshake # |
Instance details Defined in Network.TLS.Struct Methods (==) :: Handshake -> Handshake -> Bool # (/=) :: Handshake -> Handshake -> Bool #

contextHookSetHandshakeRecv :: Context -> (Handshake -> IO Handshake) -> IO () #

data Handshake13 #

#### Instances

Instances details

Show Handshake13 # |
Instance details Defined in Network.TLS.Struct13 Methods showsPrec :: Int -> Handshake13 -> ShowS # show :: Handshake13 -> String # showList :: [Handshake13] -> ShowS #
Eq Handshake13 # |
Instance details Defined in Network.TLS.Struct13 Methods (==) :: Handshake13 -> Handshake13 -> Bool # (/=) :: Handshake13 -> Handshake13 -> Bool #

contextHookSetHandshake13Recv :: Context -> (Handshake13 -> IO Handshake13) -> IO () #

contextHookSetCertificateRecv :: Context -> (CertificateChain -> IO ()) -> IO () #

data Logging #

Hooks for logging

This is called when sending and receiving packets and IO

#### Instances

Instances details

Default Logging # |
Instance details Defined in Network.TLS.Hooks Methods def :: Logging #

defaultLogging :: Logging #

loggingPacketSent :: Logging -> String -> IO () #

loggingPacketRecv :: Logging -> String -> IO () #

loggingIOSent :: Logging -> ByteString -> IO () #

loggingIORecv :: Logging -> Header -> ByteString -> IO () #

data Header #

Constructors

Header ProtocolType Version Word16 |

#### Instances

Instances details

Show Header # |
Instance details Defined in Network.TLS.Struct Methods showsPrec :: Int -> Header -> ShowS # show :: Header -> String # showList :: [Header] -> ShowS #
Eq Header # |
Instance details Defined in Network.TLS.Struct Methods (==) :: Header -> Header -> Bool # (/=) :: Header -> Header -> Bool #

newtype ProtocolType #

Constructors

ProtocolType |
Fields fromProtocolType :: Word8

Bundled Patterns

pattern ProtocolType_ChangeCipherSpec :: ProtocolType |
pattern ProtocolType_Alert :: ProtocolType |
pattern ProtocolType_Handshake :: ProtocolType |
pattern ProtocolType_AppData :: ProtocolType |

#### Instances

Instances details

Show ProtocolType # |
Instance details Defined in Network.TLS.Struct Methods showsPrec :: Int -> ProtocolType -> ShowS # show :: ProtocolType -> String # showList :: [ProtocolType] -> ShowS #
Eq ProtocolType # |
Instance details Defined in Network.TLS.Struct Methods (==) :: ProtocolType -> ProtocolType -> Bool # (/=) :: ProtocolType -> ProtocolType -> Bool #

contextHookSetLogging :: Context -> Logging -> IO () #

# Errors and exceptions

## Errors

data TLSError #

TLSError that might be returned through the TLS stack.

Prior to version 1.8.0, this type had an `Exception` instance. In version 1.8.0, this instance was removed, and functions in this library now only throw `TLSException`.

Constructors

Error_Misc String | mainly for instance of Error
Error_Protocol String AlertDescription | A fatal error condition was encountered at a low level. The elements of the tuple give (freeform text description, structured error description).
Error_Protocol_Warning String AlertDescription | A non-fatal error condition was encountered at a low level at a low level. The elements of the tuple give (freeform text description, structured error description).
Error_Certificate String |
Error_HandshakePolicy String | handshake policy failed.
Error_EOF |
Error_Packet String |
Error_Packet_unexpected String String |
Error_Packet_Parsing String |
Error_TCP_Terminate |

#### Instances

Instances details

Show TLSError # |
Instance details Defined in Network.TLS.Error Methods showsPrec :: Int -> TLSError -> ShowS # show :: TLSError -> String # showList :: [TLSError] -> ShowS #
Eq TLSError # |
Instance details Defined in Network.TLS.Error Methods (==) :: TLSError -> TLSError -> Bool # (/=) :: TLSError -> TLSError -> Bool #

data KxError #

Constructors

RSAError Error |
KxUnsupported |

#### Instances

Instances details

Show KxError # |
Instance details Defined in Network.TLS.Crypto Methods showsPrec :: Int -> KxError -> ShowS # show :: KxError -> String # showList :: [KxError] -> ShowS #

newtype AlertDescription #

Constructors

AlertDescription |
Fields fromAlertDescription :: Word8

Bundled Patterns

pattern DecodeError :: AlertDescription |
pattern CloseNotify :: AlertDescription |
pattern UnexpectedMessage :: AlertDescription |
pattern BadRecordMac :: AlertDescription |
pattern DecryptionFailed :: AlertDescription |
pattern RecordOverflow :: AlertDescription |
pattern DecompressionFailure :: AlertDescription |
pattern HandshakeFailure :: AlertDescription |
pattern BadCertificate :: AlertDescription |
pattern UnsupportedCertificate :: AlertDescription |
pattern CertificateRevoked :: AlertDescription |
pattern CertificateExpired :: AlertDescription |
pattern CertificateUnknown :: AlertDescription |
pattern IllegalParameter :: AlertDescription |
pattern UnknownCa :: AlertDescription |
pattern AccessDenied :: AlertDescription |
pattern DecryptError :: AlertDescription |
pattern ExportRestriction :: AlertDescription |
pattern ProtocolVersion :: AlertDescription |
pattern InsufficientSecurity :: AlertDescription |
pattern InternalError :: AlertDescription |
pattern InappropriateFallback :: AlertDescription |
pattern UserCanceled :: AlertDescription |
pattern NoRenegotiation :: AlertDescription |
pattern MissingExtension :: AlertDescription |
pattern UnsupportedExtension :: AlertDescription |
pattern CertificateUnobtainable :: AlertDescription |
pattern UnrecognizedName :: AlertDescription |
pattern BadCertificateStatusResponse :: AlertDescription |
pattern BadCertificateHashValue :: AlertDescription |
pattern UnknownPskIdentity :: AlertDescription |
pattern CertificateRequired :: AlertDescription |
pattern NoApplicationProtocol :: AlertDescription |

#### Instances

Instances details

Show AlertDescription # |
Instance details Defined in Network.TLS.Error Methods showsPrec :: Int -> AlertDescription -> ShowS # show :: AlertDescription -> String # showList :: [AlertDescription] -> ShowS #
Eq AlertDescription # |
Instance details Defined in Network.TLS.Error Methods (==) :: AlertDescription -> AlertDescription -> Bool # (/=) :: AlertDescription -> AlertDescription -> Bool #

## Exceptions

data TLSException #

TLS Exceptions. Some of the data constructors indicate incorrect use of the library, and the documentation for those data constructors calls this out. The others wrap `TLSError` with some kind of context to explain when the exception occurred.

Constructors

Terminated Bool String TLSError | Early termination exception with the reason and the error associated
HandshakeFailed TLSError | Handshake failed for the reason attached.
PostHandshake TLSError | Failure occurred while sending or receiving data after the TLS handshake succeeded.
Uncontextualized TLSError | Lifts a `TLSError` into `TLSException` without provided any context around when the error happened.
ConnectionNotEstablished | Usage error when the connection has not been established and the user is trying to send or receive data. Indicates that this library has been used incorrectly.
MissingHandshake | Expected that a TLS handshake had already taken place, but no TLS handshake had occurred. Indicates that this library has been used incorrectly.

#### Instances

Instances details

Exception TLSException # |
Instance details Defined in Network.TLS.Error Methods toException :: TLSException -> SomeException # fromException :: SomeException -> Maybe TLSException # displayException :: TLSException -> String # backtraceDesired :: TLSException -> Bool #
Show TLSException # |
Instance details Defined in Network.TLS.Error Methods showsPrec :: Int -> TLSException -> ShowS # show :: TLSException -> String # showList :: [TLSException] -> ShowS #
Eq TLSException # |
Instance details Defined in Network.TLS.Error Methods (==) :: TLSException -> TLSException -> Bool # (/=) :: TLSException -> TLSException -> Bool #

# Raw types

## Compressions class

class CompressionC a where #

supported compression algorithms need to be part of this class

Methods

compressionCID :: a -> CompressionID #

compressionCDeflate :: a -> ByteString -> (a, ByteString) #

compressionCInflate :: a -> ByteString -> (a, ByteString) #

type CompressionID = Word8 #

Compression identification

## Crypto Key

data PubKey #

Public key types known and used in X.509

Constructors

PubKeyRSA PublicKey | RSA public key
PubKeyDSA PublicKey | DSA public key
PubKeyDH (Integer, Integer, Integer, Maybe Integer, ([Word8], Integer)) | DH format with (p,g,q,j,(seed,pgenCounter))
PubKeyEC PubKeyEC | EC public key
PubKeyX25519 PublicKey | X25519 public key
PubKeyX448 PublicKey | X448 public key
PubKeyEd25519 PublicKey | Ed25519 public key
PubKeyEd448 PublicKey | Ed448 public key
PubKeyUnknown OID ByteString | unrecognized format

#### Instances

Instances details

ASN1Object PubKey |
Instance details Defined in Data.X509.PublicKey Methods toASN1 :: PubKey -> ASN1S # fromASN1 :: [ASN1] -> Either String (PubKey, [ASN1]) #
Show PubKey |
Instance details Defined in Data.X509.PublicKey Methods showsPrec :: Int -> PubKey -> ShowS # show :: PubKey -> String # showList :: [PubKey] -> ShowS #
Eq PubKey |
Instance details Defined in Data.X509.PublicKey Methods (==) :: PubKey -> PubKey -> Bool # (/=) :: PubKey -> PubKey -> Bool #

data PrivKey #

Private key types known and used in X.509

Constructors

PrivKeyRSA PrivateKey | RSA private key
PrivKeyDSA PrivateKey | DSA private key
PrivKeyEC PrivKeyEC | EC private key
PrivKeyX25519 SecretKey | X25519 private key
PrivKeyX448 SecretKey | X448 private key
PrivKeyEd25519 SecretKey | Ed25519 private key
PrivKeyEd448 SecretKey | Ed448 private key

#### Instances

Instances details

ASN1Object PrivKey |
Instance details Defined in Data.X509.PrivateKey Methods toASN1 :: PrivKey -> ASN1S # fromASN1 :: [ASN1] -> Either String (PrivKey, [ASN1]) #
Show PrivKey |
Instance details Defined in Data.X509.PrivateKey Methods showsPrec :: Int -> PrivKey -> ShowS # show :: PrivKey -> String # showList :: [PrivKey] -> ShowS #
Show Credential # |
Instance details Defined in Network.TLS.Credentials Methods showsPrec :: Int -> Credential -> ShowS # show :: Credential -> String # showList :: [Credential] -> ShowS #
Eq PrivKey |
Instance details Defined in Data.X509.PrivateKey Methods (==) :: PrivKey -> PrivKey -> Bool # (/=) :: PrivKey -> PrivKey -> Bool #

## Ciphers & Predefined ciphers

data Cipher #

Cipher algorithm

Constructors

Cipher |
Fields cipherID :: CipherID cipherName :: String cipherHash :: Hash cipherBulk :: Bulk cipherKeyExchange :: CipherKeyExchangeType cipherMinVer :: Maybe Version cipherPRFHash :: Maybe Hash

#### Instances

Instances details

Show Cipher # |
Instance details Defined in Network.TLS.Types.Cipher Methods showsPrec :: Int -> Cipher -> ShowS # show :: Cipher -> String # showList :: [Cipher] -> ShowS #
Eq Cipher # |
Instance details Defined in Network.TLS.Types.Cipher Methods (==) :: Cipher -> Cipher -> Bool # (/=) :: Cipher -> Cipher -> Bool #

data Hash #

Constructors

MD5 |
SHA1 |
SHA224 |
SHA256 |
SHA384 |
SHA512 |
SHA1_MD5 |

#### Instances

Instances details

Show Hash # |
Instance details Defined in Network.TLS.Crypto Methods showsPrec :: Int -> Hash -> ShowS # show :: Hash -> String # showList :: [Hash] -> ShowS #
Eq Hash # |
Instance details Defined in Network.TLS.Crypto Methods (==) :: Hash -> Hash -> Bool # (/=) :: Hash -> Hash -> Bool #

data CipherKeyExchangeType #

Constructors

CipherKeyExchange_RSA |
CipherKeyExchange_DH_Anon |
CipherKeyExchange_DHE_RSA |
CipherKeyExchange_ECDHE_RSA |
CipherKeyExchange_DHE_DSA |
CipherKeyExchange_DH_DSA |
CipherKeyExchange_DH_RSA |
CipherKeyExchange_ECDH_ECDSA |
CipherKeyExchange_ECDH_RSA |
CipherKeyExchange_ECDHE_ECDSA |
CipherKeyExchange_TLS13 |

#### Instances

Instances details

Show CipherKeyExchangeType # |
Instance details Defined in Network.TLS.Types.Cipher Methods showsPrec :: Int -> CipherKeyExchangeType -> ShowS # show :: CipherKeyExchangeType -> String # showList :: [CipherKeyExchangeType] -> ShowS #
Eq CipherKeyExchangeType # |
Instance details Defined in Network.TLS.Types.Cipher Methods (==) :: CipherKeyExchangeType -> CipherKeyExchangeType -> Bool # (/=) :: CipherKeyExchangeType -> CipherKeyExchangeType -> Bool #

data Bulk #

Constructors

Bulk |
Fields bulkName :: String bulkKeySize :: Int bulkIVSize :: Int bulkExplicitIV :: Int bulkAuthTagLen :: Int bulkBlockSize :: Int bulkF :: BulkFunctions

#### Instances

Instances details

Show Bulk # |
Instance details Defined in Network.TLS.Types.Cipher Methods showsPrec :: Int -> Bulk -> ShowS # show :: Bulk -> String # showList :: [Bulk] -> ShowS #
Eq Bulk # |
Instance details Defined in Network.TLS.Types.Cipher Methods (==) :: Bulk -> Bulk -> Bool # (/=) :: Bulk -> Bulk -> Bool #

data BulkFunctions #

Constructors

BulkBlockF (BulkDirection -> BulkKey -> BulkBlock) |
BulkStreamF (BulkDirection -> BulkKey -> BulkStream) |
BulkAeadF (BulkDirection -> BulkKey -> BulkAEAD) |

data BulkDirection #

Constructors

BulkEncrypt |
BulkDecrypt |

#### Instances

Instances details

Show BulkDirection # |
Instance details Defined in Network.TLS.Types.Cipher Methods showsPrec :: Int -> BulkDirection -> ShowS # show :: BulkDirection -> String # showList :: [BulkDirection] -> ShowS #
Eq BulkDirection # |
Instance details Defined in Network.TLS.Types.Cipher Methods (==) :: BulkDirection -> BulkDirection -> Bool # (/=) :: BulkDirection -> BulkDirection -> Bool #

data BulkState #

Constructors

BulkStateStream BulkStream |
BulkStateBlock BulkBlock |
BulkStateAEAD BulkAEAD |
BulkStateUninitialized |

#### Instances

Instances details

Show BulkState # |
Instance details Defined in Network.TLS.Cipher Methods showsPrec :: Int -> BulkState -> ShowS # show :: BulkState -> String # showList :: [BulkState] -> ShowS #

newtype BulkStream #

Constructors

BulkStream (ByteString -> (ByteString, BulkStream)) |

type BulkBlock = BulkIV -> ByteString -> (ByteString, BulkIV) #

type BulkAEAD = BulkNonce -> ByteString -> BulkAdditionalData -> (ByteString, AuthTag) #

bulkInit :: Bulk -> BulkDirection -> BulkKey -> BulkState #

type CipherID = Word16 #

Cipher identification

cipherKeyBlockSize :: Cipher -> Int #

type BulkKey = ByteString #

type BulkIV = ByteString #

type BulkNonce = ByteString #

type BulkAdditionalData = ByteString #

cipherAllowedForVersion :: Version -> Cipher -> Bool #

Check if a specific `Cipher` is allowed to be used with the version specified

hasMAC :: BulkFunctions -> Bool #

hasRecordIV :: BulkFunctions -> Bool #

elemCipher :: [CipherId] -> Cipher -> Bool #

intersectCiphers :: [CipherId] -> [Cipher] -> [Cipher] #

findCipher :: CipherID -> [Cipher] -> Maybe Cipher #

# Deprecated

recvData' :: MonadIO m => Context -> m ByteString #

Deprecated: use recvData that returns strict bytestring

same as recvData but returns a lazy bytestring.

type Bytes = ByteString #

Deprecated: Use Data.ByteString.Bytestring instead of Bytes.

data ValidationChecks #

A set of checks to activate or parametrize to perform on certificates.

It's recommended to use `defaultChecks` to create the structure, to better cope with future changes or expansion of the structure.

Constructors

ValidationChecks |
Fields checkTimeValidity :: Bool check time validity of every certificate in the chain. the make sure that current time is between each validity bounds in the certificate checkAtTime :: Maybe DateTime The time when the validity check happens. When set to Nothing, the current time will be used checkStrictOrdering :: Bool Check that no certificate is included that shouldn't be included. unfortunately despite the specification violation, a lots of real world server serves useless and usually old certificates that are not relevant to the certificate sent, in their chain. checkCAConstraints :: Bool Check that signing certificate got the CA basic constraint. this is absolutely not recommended to turn it off. checkExhaustive :: Bool Check the whole certificate chain without stopping at the first failure. Allow gathering a exhaustive list of failure reasons. if this is turn off, it's absolutely not safe to ignore a failed reason even it doesn't look serious (e.g. Expired) as other more serious checks would not have been performed. checkLeafV3 :: Bool Check that the leaf certificate is version 3. If disable, version 2 certificate is authorized in leaf position and key usage cannot be checked. checkLeafKeyUsage :: [ExtKeyUsageFlag] Check that the leaf certificate is authorized to be used for certain usage. If set to empty list no check are performed, otherwise all the flags is the list need to exists in the key usage extension. If the extension is not present, the check will pass and behave as if the certificate key is not restricted to any specific usage. checkLeafKeyPurpose :: [ExtKeyUsagePurpose] Check that the leaf certificate is authorized to be used for certain purpose. If set to empty list no check are performed, otherwise all the flags is the list need to exists in the extended key usage extension if present. If the extension is not present, then the check will pass and behave as if the certificate is not restricted to any specific purpose. checkFQHN :: Bool Check the top certificate names matching the fully qualified hostname (FQHN). it's not recommended to turn this check off, if no other name checks are performed.

#### Instances

Instances details

Default ValidationChecks |
Instance details Defined in Data.X509.Validation Methods def :: ValidationChecks #
Show ValidationChecks |
Instance details Defined in Data.X509.Validation Methods showsPrec :: Int -> ValidationChecks -> ShowS # show :: ValidationChecks -> String # showList :: [ValidationChecks] -> ShowS #
Eq ValidationChecks |
Instance details Defined in Data.X509.Validation Methods (==) :: ValidationChecks -> ValidationChecks -> Bool # (/=) :: ValidationChecks -> ValidationChecks -> Bool #

data ValidationHooks #

A set of hooks to manipulate the way the verification works.

BEWARE, it's easy to change behavior leading to compromised security.

Constructors

ValidationHooks |
Fields hookMatchSubjectIssuer :: DistinguishedName -> Certificate -> Bool check whether a given issuer `DistinguishedName` matches the subject `DistinguishedName` of a candidate issuer certificate. hookValidateTime :: DateTime -> Certificate -> [FailedReason] check whether the certificate in the second argument is valid at the time provided in the first argument. Return an empty list for success or else one or more failure reasons. hookValidateName :: HostName -> Certificate -> [FailedReason] validate the certificate leaf name with the DNS named used to connect hookFilterReason :: [FailedReason] -> [FailedReason] user filter to modify the list of failure reasons

#### Instances

Instances details

Default ValidationHooks |
Instance details Defined in Data.X509.Validation Methods def :: ValidationHooks #

clientUseMaxFragmentLength :: ClientParams -> Maybe MaxFragmentEnum #

Deprecated: UseMaxFragmentLength is deprecated

Default: `Nothing`