## GckSession

GckSession — Represents an open PKCS11 session.

## Synopsis

    struct              GckSession;
    enum                GckSessionOptions;
    GckSession *        gck_session_from_handle             (GckSlot *slot,
                                                             CK_SESSION_HANDLE handle,
                                                             guint options);
    GckModule *         gck_session_get_module              (GckSession *self);
    GckSlot *           gck_session_get_slot                (GckSession *self);
    CK_SESSION_HANDLE   gck_session_get_handle              (GckSession *self);
    GckSessionInfo *    gck_session_get_info                (GckSession *self);
    gboolean            gck_session_login                   (GckSession *self,
                                                             gulong user_type,
                                                             const guchar *pin,
                                                             gsize n_pin,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                gck_session_login_async             (GckSession *self,
                                                             gulong user_type,
                                                             const guchar *pin,
                                                             gsize n_pin,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    gboolean            gck_session_login_finish            (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);
    gboolean            gck_session_logout                  (GckSession *self,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                gck_session_logout_async            (GckSession *self,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    gboolean            gck_session_logout_finish           (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);
    GckObject *         gck_session_create_object           (GckSession *self,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                gck_session_create_object_async     (GckSession *self,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    GckObject *         gck_session_create_object_finish    (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);
    GList *             gck_session_find_objects            (GckSession *self,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                gck_session_find_objects_async      (GckSession *self,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    GList *             gck_session_find_objects_finish     (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);
    guchar *            gck_session_encrypt                 (GckSession *self,
                                                             GckObject *key,
                                                             gulong mech_type,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);
    guchar *            gck_session_encrypt_full            (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                gck_session_encrypt_async           (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    guchar *            gck_session_encrypt_finish          (GckSession *self,
                                                             GAsyncResult *result,
                                                             gsize *n_result,
                                                             GError **error);
    guchar *            gck_session_decrypt                 (GckSession *self,
                                                             GckObject *key,
                                                             gulong mech_type,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);
    guchar *            gck_session_decrypt_full            (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                gck_session_decrypt_async           (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    guchar *            gck_session_decrypt_finish          (GckSession *self,
                                                             GAsyncResult *result,
                                                             gsize *n_result,
                                                             GError **error);
    guchar *            gck_session_sign                    (GckSession *self,
                                                             GckObject *key,
                                                             gulong mech_type,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);
    guchar *            gck_session_sign_full               (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                gck_session_sign_async              (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    guchar *            gck_session_sign_finish             (GckSession *self,
                                                             GAsyncResult *result,
                                                             gsize *n_result,
                                                             GError **error);
    gboolean            gck_session_verify                  (GckSession *self,
                                                             GckObject *key,
                                                             gulong mech_type,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             const guchar *signature,
                                                             gsize n_signature,
                                                             GCancellable *cancellable,
                                                             GError **error);
    gboolean            gck_session_verify_full             (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             const guchar *signature,
                                                             gsize n_signature,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                gck_session_verify_async            (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             const guchar *signature,
                                                             gsize n_signature,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    gboolean            gck_session_verify_finish           (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);
    GckObject *         gck_session_derive_key              (GckSession *self,
                                                             GckObject *base,
                                                             gulong mech_type,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                gck_session_derive_key_async        (GckSession *self,
                                                             GckObject *base,
                                                             GckMechanism *mechanism,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    GckObject *         gck_session_derive_key_finish       (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);
    GckObject *         gck_session_derive_key_full         (GckSession *self,
                                                             GckObject *base,
                                                             GckMechanism *mechanism,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GError **error);
    gboolean            gck_session_generate_key_pair       (GckSession *self,
                                                             gulong mech_type,
                                                             GckAttributes *public_attrs,
                                                             GckAttributes *private_attrs,
                                                             GckObject **public_key,
                                                             GckObject **private_key,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                gck_session_generate_key_pair_async (GckSession *self,
                                                             GckMechanism *mechanism,
                                                             GckAttributes *public_attrs,
                                                             GckAttributes *private_attrs,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    gboolean            gck_session_generate_key_pair_finish
                                                            (GckSession *self,
                                                             GAsyncResult *result,
                                                             GckObject **public_key,
                                                             GckObject **private_key,
                                                             GError **error);
    gboolean            gck_session_generate_key_pair_full  (GckSession *self,
                                                             GckMechanism *mechanism,
                                                             GckAttributes *public_attrs,
                                                             GckAttributes *private_attrs,
                                                             GckObject **public_key,
                                                             GckObject **private_key,
                                                             GCancellable *cancellable,
                                                             GError **error);
    guint               gck_session_get_options             (GckSession *self);
    gulong              gck_session_get_state               (GckSession *self);
    GType               gck_session_get_type                (void);
    gboolean            gck_session_init_pin                (GckSession *self,
                                                             const guchar *pin,
                                                             gsize n_pin,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                gck_session_init_pin_async          (GckSession *self,
                                                             const guchar *pin,
                                                             gsize n_pin,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    gboolean            gck_session_init_pin_finish         (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);
    gboolean            gck_session_set_pin                 (GckSession *self,
                                                             const guchar *old_pin,
                                                             gsize n_old_pin,
                                                             const guchar *new_pin,
                                                             gsize n_new_pin,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                gck_session_set_pin_async           (GckSession *self,
                                                             const guchar *old_pin,
                                                             gsize n_old_pin,
                                                             const guchar *new_pin,
                                                             gsize n_new_pin,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    gboolean            gck_session_set_pin_finish          (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);
    GckObject *         gck_session_unwrap_key              (GckSession *self,
                                                             GckObject *wrapper,
                                                             gulong mech_type,
                                                             gconstpointer input,
                                                             gsize n_input,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                gck_session_unwrap_key_async        (GckSession *self,
                                                             GckObject *wrapper,
                                                             GckMechanism *mechanism,
                                                             gconstpointer input,
                                                             gsize n_input,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    GckObject *         gck_session_unwrap_key_finish       (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);
    GckObject *         gck_session_unwrap_key_full         (GckSession *self,
                                                             GckObject *wrapper,
                                                             GckMechanism *mechanism,
                                                             gconstpointer input,
                                                             gsize n_input,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GError **error);
    gpointer            gck_session_wrap_key                (GckSession *self,
                                                             GckObject *wrapper,
                                                             gulong mech_type,
                                                             GckObject *wrapped,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);
    void                gck_session_wrap_key_async          (GckSession *self,
                                                             GckObject *wrapper,
                                                             GckMechanism *mechanism,
                                                             GckObject *wrapped,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);
    gpointer            gck_session_wrap_key_finish         (GckSession *self,
                                                             GAsyncResult *result,
                                                             gsize *n_result,
                                                             GError **error);
    gpointer            gck_session_wrap_key_full           (GckSession *self,
                                                             GckObject *wrapper,
                                                             GckMechanism *mechanism,
                                                             GckObject *wrapped,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);
                        GckSessionInfo;
    void                gck_session_info_free               (GckSessionInfo *session_info);
                        GckMechanism;

## Description

Before performing any PKCS11 operations, a session must be opened. This is analogous to an open database handle, or a file handle.

## Details

### struct GckSession

    struct GckSession {
    	GObject parent;
    };

Represents an open PKCS11 session.

GObject `parent`; | derived from this.

### enum GckSessionOptions

    typedef enum {
    	GCK_SESSION_READ_WRITE = 1 << 1,
    	GCK_SESSION_LOGIN_USER =  1 << 2,
    	GCK_SESSION_AUTHENTICATE = 1 << 3,
    } GckSessionOptions;

Options for creating sessions.

`GCK_SESSION_READ_WRITE` | Open sessions as read/write
`GCK_SESSION_LOGIN_USER` | Login as user on new sessions.
`GCK_SESSION_AUTHENTICATE` | Authenticate as necessary

### gck_session_from_handle ()

    GckSession *        gck_session_from_handle             (GckSlot *slot,
                                                             CK_SESSION_HANDLE handle,
                                                             guint options);

Initialize a GckSession object from a raw PKCS#11 session handle. Usually one would use the `gck_slot_open_session()` function to create a session.

`slot` : | The slot which the session belongs to.
`handle` : | The raw PKCS#11 handle of the session.
`options` : | Session options. Those which are used during opening a session have no effect.
Returns : | The new GckSession object.

### gck_session_get_module ()

    GckModule *         gck_session_get_module              (GckSession *self);

Get the PKCS#11 module to which this session belongs.

`self` : | The session object.
Returns : | The module, which should be unreffed after use.

### gck_session_get_slot ()

    GckSlot *           gck_session_get_slot                (GckSession *self);

Get the PKCS#11 slot to which this session belongs.

`self` : | The session object.
Returns : | The slot, which should be unreffed after use.

### gck_session_get_handle ()

    CK_SESSION_HANDLE   gck_session_get_handle              (GckSession *self);

Get the raw PKCS#11 session handle from a GckSession object.

`self` : | The session object.
Returns : | The raw session handle.

### gck_session_get_info ()

    GckSessionInfo *    gck_session_get_info                (GckSession *self);

Get information about the session.

`self` : | The session object.
Returns : | The session info. Use the `gck_session_info_free()` to release when done.

### gck_session_login ()

    gboolean            gck_session_login                   (GckSession *self,
                                                             gulong user_type,
                                                             const guchar *pin,
                                                             gsize n_pin,
                                                             GCancellable *cancellable,
                                                             GError **error);

Login the user on the session. This call may block for an indefinite period.

`self` : | Log in to this session.
`user_type` : | The type of login user.
`pin` : | The user's PIN, or NULL for protected authentication path.
`n_pin` : | The length of the PIN.
`cancellable` : | Optional cancellation object, or NULL.
`error` : | A location to return an error.
Returns : | Whether successful or not.

### gck_session_login_async ()

    void                gck_session_login_async             (GckSession *self,
                                                             gulong user_type,
                                                             const guchar *pin,
                                                             gsize n_pin,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Login the user on the session. This call will return immediately and completes asynchronously.

`self` : | Log in to this session.
`user_type` : | The type of login user.
`pin` : | The user's PIN, or NULL for protected authentication path.
`n_pin` : | The length of the PIN.
`cancellable` : | Optional cancellation object, or NULL.
`callback` : | Called when the operation completes.
`user_data` : | Data to pass to the callback.

### gck_session_login_finish ()

    gboolean            gck_session_login_finish            (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);

Get the result of a login operation.

`self` : | The session logged into.
`result` : | The result passed to the callback.
`error` : | A location to return an error.
Returns : | Whether the operation was successful or not.

### gck_session_logout ()

    gboolean            gck_session_logout                  (GckSession *self,
                                                             GCancellable *cancellable,
                                                             GError **error);

Log out of the session. This call may block for an indefinite period.

`self` : | Logout of this session.
`cancellable` : | Optional cancellation object, or NULL.
`error` : | A location to return an error.
Returns : | Whether the logout was successful or not.

### gck_session_logout_async ()

    void                gck_session_logout_async            (GckSession *self,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Log out of the session. This call returns immediately and completes asynchronously.

`self` : | Logout of this session.
`cancellable` : | Optional cancellation object, or NULL.
`callback` : | Called when the operation completes.
`user_data` : | Data to pass to the callback.

### gck_session_logout_finish ()

    gboolean            gck_session_logout_finish           (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);

Get the result of logging out of a session.

`self` : | Logout of this session.
`result` : | The result passed to the callback.
`error` : | A location to return an error.
Returns : | Whether the logout was successful or not.

### gck_session_create_object ()

    GckObject *         gck_session_create_object           (GckSession *self,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GError **error);

Create a new PKCS#11 object. This call may block for an indefinite period.

`self` : | The session to create the object on.
`attrs` : | The attributes to create the object with.
`cancellable` : | Optional cancellation object, or NULL.
`error` : | A location to return an error, or NULL.
Returns : | The newly created object or NULL if an error occurred.

### gck_session_create_object_async ()

    void                gck_session_create_object_async     (GckSession *self,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Create a new PKCS#11 object. This call will return immediately and complete asynchronously.

`self` : | The session to create the object on.
`attrs` : | The attributes to create the object with.
`cancellable` : | Optional cancellation object or NULL.
`callback` : | Called when the operation completes.
`user_data` : | Data to pass to the callback.

### gck_session_create_object_finish ()

    GckObject *         gck_session_create_object_finish    (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);

Get the result of creating a new PKCS#11 object.

`self` : | The session to create the object on.
`result` : | The result passed to the callback.
`error` : | A location to return an error, or NULL.
Returns : | The newly created object or NULL if an error occurred.

### gck_session_find_objects ()

    GList *             gck_session_find_objects            (GckSession *self,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GError **error);

Find the objects matching the passed attributes. This call may block for an indefinite period.

`self` : | The session to find objects on.
`attrs` : | The attributes to match.
`cancellable` : | Optional cancellation object or NULL.
`error` : | A location to return an error or NULL.
Returns : | A list of the matching objects, which may be empty.

### gck_session_find_objects_async ()

    void                gck_session_find_objects_async      (GckSession *self,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Find the objects matching the passed attributes. This call will return immediately and complete asynchronously.

`self` : | The session to find objects on.
`attrs` : | The attributes to match.
`cancellable` : | Optional cancellation object or NULL.
`callback` : | Called when the operation completes.
`user_data` : | Data to pass to the callback.

### gck_session_find_objects_finish ()

    GList *             gck_session_find_objects_finish     (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);

Get the result of a find operation.

`self` : | The session to find objects on.
`result` : | The attributes to match.
`error` : | A location to return an error.
Returns : | A list of the matching objects, which may be empty.

### gck_session_encrypt ()

    guchar *            gck_session_encrypt                 (GckSession *self,
                                                             GckObject *key,
                                                             gulong mech_type,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);

Encrypt data in a mechanism specific manner. This call may block for an indefinite period.

`self` : | The session.
`key` : | The key to encrypt with.
`mech_type` : | The mechanism type to use for encryption.
`input` : | The data to encrypt.
`n_input` : | The length of the data to encrypt.
`n_result` : | A location to store the length of the result data.
`cancellable` : | Optional cancellation object, or `NULL`
`error` : | A location to place error information.
Returns : | The data that was encrypted, or NULL if an error occured.

### gck_session_encrypt_full ()

    guchar *            gck_session_encrypt_full            (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);

Encrypt data in a mechanism specific manner. This call may block for an indefinite period.

`self` : | The session.
`key` : | The key to encrypt with.
`mechanism` : | The mechanism type and parameters to use for encryption.
`input` : | The data to encrypt.
`n_input` : | The length of the data to encrypt.
`n_result` : | A location to store the length of the result data.
`cancellable` : | A GCancellable which can be used to cancel the operation.
`error` : | A location to place error information.
Returns : | The data that was encrypted, or NULL if an error occured.

### gck_session_encrypt_async ()

    void                gck_session_encrypt_async           (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Encrypt data in a mechanism specific manner. This call will return immediately and complete asynchronously.

`self` : | The session.
`key` : | The key to encrypt with.
`mechanism` : | The mechanism type and parameters to use for encryption.
`input` : | The data to encrypt.
`n_input` : | The length of the data to encrypt.
`cancellable` : | A GCancellable which can be used to cancel the operation.
`callback` : | Called when the operation completes.
`user_data` : | A pointer to pass to the callback.

### gck_session_encrypt_finish ()

    guchar *            gck_session_encrypt_finish          (GckSession *self,
                                                             GAsyncResult *result,
                                                             gsize *n_result,
                                                             GError **error);

Get the result of an encryption operation.

`self` : | The session.
`result` : | The result object passed to the callback.
`n_result` : | A location to store the length of the result data.
`error` : | A location to place error information.
Returns : | The data that was encrypted, or NULL if an error occurred.

### gck_session_decrypt ()

    guchar *            gck_session_decrypt                 (GckSession *self,
                                                             GckObject *key,
                                                             gulong mech_type,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);

Decrypt data in a mechanism specific manner. This call may block for an indefinite period.

`self` : | The session.
`key` : | The key to decrypt with.
`mech_type` : | The mechanism type to use for decryption.
`input` : | The data to decrypt.
`n_input` : | The length of the data to decrypt.
`n_result` : | A location to store the length of the result data.
`cancellable` : | Optional cancellation object, or `NULL`
`error` : | A location to place an error.
Returns : | The data that was decrypted, or NULL if an error occured.

### gck_session_decrypt_full ()

    guchar *            gck_session_decrypt_full            (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);

Decrypt data in a mechanism specific manner. This call may block for an indefinite period.

`self` : | The session.
`key` : | The key to decrypt with.
`mechanism` : | The mechanism type and parameters to use for decryption.
`input` : | The data to decrypt.
`n_input` : | The length of the data to decrypt.
`n_result` : | A location to store the length of the result data.
`cancellable` : | A GCancellable which can be used to cancel the operation.
`error` : | A location to place error information.
Returns : | The data that was decrypted, or NULL if an error occured.

### gck_session_decrypt_async ()

    void                gck_session_decrypt_async           (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Decrypt data in a mechanism specific manner. This call will return immediately and complete asynchronously.

`self` : | The session.
`key` : | The key to decrypt with.
`mechanism` : | The mechanism type and parameters to use for decryption.
`input` : | The data to decrypt.
`n_input` : | The length of the data to decrypt.
`cancellable` : | A GCancellable which can be used to cancel the operation.
`callback` : | Called when the operation completes.
`user_data` : | A pointer to pass to the callback.

### gck_session_decrypt_finish ()

    guchar *            gck_session_decrypt_finish          (GckSession *self,
                                                             GAsyncResult *result,
                                                             gsize *n_result,
                                                             GError **error);

Get the result of an decryption operation.

`self` : | The session.
`result` : | The result object passed to the callback.
`n_result` : | A location to store the length of the result data.
`error` : | A location to place error information.
Returns : | The data that was decrypted, or NULL if an error occurred.

### gck_session_sign ()

    guchar *            gck_session_sign                    (GckSession *self,
                                                             GckObject *key,
                                                             gulong mech_type,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);

Sign data in a mechanism specific manner. This call may block for an indefinite period.

`self` : | The session.
`key` : | The key to sign with.
`mech_type` : | The mechanism type to use for signing.
`input` : | The data to sign.
`n_input` : | The length of the data to sign.
`n_result` : | A location to store the length of the result data.
`cancellable` : | Optional cancellation object, or `NULL`
`error` : | A location to place an error.
Returns : | The data that was signed, or NULL if an error occured.

### gck_session_sign_full ()

    guchar *            gck_session_sign_full               (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);

Sign data in a mechanism specific manner. This call may block for an indefinite period.

`self` : | The session.
`key` : | The key to sign with.
`mechanism` : | The mechanism type and parameters to use for signing.
`input` : | The data to sign.
`n_input` : | The length of the data to sign.
`n_result` : | A location to store the length of the result data.
`cancellable` : | A GCancellable which can be used to cancel the operation.
`error` : | A location to place error information.
Returns : | The data that was signed, or NULL if an error occured.

### gck_session_sign_async ()

    void                gck_session_sign_async              (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Sign data in a mechanism specific manner. This call will return immediately and complete asynchronously.

`self` : | The session.
`key` : | The key to sign with.
`mechanism` : | The mechanism type and parameters to use for signing.
`input` : | The data to sign.
`n_input` : | The length of the data to sign.
`cancellable` : | A GCancellable which can be used to cancel the operation.
`callback` : | Called when the operation completes.
`user_data` : | A pointer to pass to the callback.

### gck_session_sign_finish ()

    guchar *            gck_session_sign_finish             (GckSession *self,
                                                             GAsyncResult *result,
                                                             gsize *n_result,
                                                             GError **error);

Get the result of an signing operation.

`self` : | The session.
`result` : | The result object passed to the callback.
`n_result` : | A location to store the length of the result data.
`error` : | A location to place error information.
Returns : | The data that was signed, or NULL if an error occurred.

### gck_session_verify ()

    gboolean            gck_session_verify                  (GckSession *self,
                                                             GckObject *key,
                                                             gulong mech_type,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             const guchar *signature,
                                                             gsize n_signature,
                                                             GCancellable *cancellable,
                                                             GError **error);

Verify data in a mechanism specific manner. This call may block for an indefinite period.

`self` : | The session.
`key` : | The key to verify with.
`mech_type` : | The mechanism type to use for verifying.
`input` : | The data to verify.
`n_input` : | The length of the data to verify.
`signature` : | The signature.
`n_signature` : | The length of the signature.
`cancellable` : | Optional cancellation object, or `NULL`
`error` : | A location to place an error.
Returns : | TRUE if the data verified correctly, otherwise a failure or error occurred.

### gck_session_verify_full ()

    gboolean            gck_session_verify_full             (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             const guchar *signature,
                                                             gsize n_signature,
                                                             GCancellable *cancellable,
                                                             GError **error);

Verify data in a mechanism specific manner. This call may block for an indefinite period.

`self` : | The session.
`key` : | The key to verify with.
`mechanism` : | The mechanism type and parameters to use for signing.
`input` : | The data to verify.
`n_input` : | The length of the data to verify.
`signature` : | The signature.
`n_signature` : | The length of the signature.
`cancellable` : | A GCancellable which can be used to cancel the operation.
`error` : | A location to place an error.
Returns : | TRUE if the data verified correctly, otherwise a failure or error occurred.

### gck_session_verify_async ()

    void                gck_session_verify_async            (GckSession *self,
                                                             GckObject *key,
                                                             GckMechanism *mechanism,
                                                             const guchar *input,
                                                             gsize n_input,
                                                             const guchar *signature,
                                                             gsize n_signature,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Verify data in a mechanism specific manner. This call returns immediately and completes asynchronously.

`self` : | The session.
`key` : | The key to verify with.
`mechanism` : | The mechanism type and parameters to use for signing.
`input` : | The data to verify.
`n_input` : | The length of the data to verify.
`signature` : | The signature.
`n_signature` : | The length of the signature.
`cancellable` : | A GCancellable which can be used to cancel the operation.
`callback` : | Called when the operation completes.
`user_data` : | A pointer to pass to the callback.

### gck_session_verify_finish ()

    gboolean            gck_session_verify_finish           (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);

Get the result of an verify operation.

`self` : | The session.
`result` : | The result object passed to the callback.
`error` : | A location to place error information.
Returns : | TRUE if the data verified correctly, otherwise a failure or error occurred.

### gck_session_derive_key ()

    GckObject *         gck_session_derive_key              (GckSession *self,
                                                             GckObject *base,
                                                             gulong mech_type,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GError **error);

Derive a key from another key. This call may block for an indefinite period.

`self` : | The session to use.
`base` : | The key to derive from.
`mech_type` : | The mechanism to use for derivation.
`attrs` : | Additional attributes for the derived key.
`cancellable` : | Optional cancellation object, or NULL.
`error` : | A location to return an error, or NULL.
Returns : | The new derived key or NULL if the operation failed.

### gck_session_derive_key_async ()

    void                gck_session_derive_key_async        (GckSession *self,
                                                             GckObject *base,
                                                             GckMechanism *mechanism,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Derive a key from another key. This call will return immediately and complete asynchronously.

`self` : | The session to use.
`base` : | The key to derive from.
`mechanism` : | The mechanism to use for derivation.
`attrs` : | Additional attributes for the derived key.
`cancellable` : | Optional cancellation object or NULL.
`callback` : | Called when the operation completes.
`user_data` : | Data to pass to the callback.

### gck_session_derive_key_finish ()

    GckObject *         gck_session_derive_key_finish       (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);

Get the result of a derive key operation.

`self` : | The session to use.
`result` : | The async result passed to the callback.
`error` : | A location to return an error.
Returns : | The new derived key or NULL if the operation failed.

### gck_session_derive_key_full ()

    GckObject *         gck_session_derive_key_full         (GckSession *self,
                                                             GckObject *base,
                                                             GckMechanism *mechanism,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GError **error);

Derive a key from another key. This call may block for an indefinite period.

`self` : | The session to use.
`base` : | The key to derive from.
`mechanism` : | The mechanism to use for derivation.
`attrs` : | Additional attributes for the derived key.
`cancellable` : | Optional cancellation object, or NULL.
`error` : | A location to return an error, or NULL.
Returns : | The new derived key or NULL if the operation failed.

### gck_session_generate_key_pair ()

    gboolean            gck_session_generate_key_pair       (GckSession *self,
                                                             gulong mech_type,
                                                             GckAttributes *public_attrs,
                                                             GckAttributes *private_attrs,
                                                             GckObject **public_key,
                                                             GckObject **private_key,
                                                             GCancellable *cancellable,
                                                             GError **error);

Generate a new key pair of public and private keys. This call may block for an indefinite period.

`self` : | The session to use.
`mech_type` : | The mechanism type to use for key generation.
`public_attrs` : | Additional attributes for the generated public key.
`private_attrs` : | Additional attributes for the generated private key.
`public_key` : | A location to return the resulting public key.
`private_key` : | A location to return the resulting private key.
`cancellable` : | Optional cancellation object, or NULL.
`error` : | A location to return an error, or NULL.
Returns : | TRUE if the operation succeeded.

### gck_session_generate_key_pair_async ()

    void                gck_session_generate_key_pair_async (GckSession *self,
                                                             GckMechanism *mechanism,
                                                             GckAttributes *public_attrs,
                                                             GckAttributes *private_attrs,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Generate a new key pair of public and private keys. This call will return immediately and complete asynchronously.

`self` : | The session to use.
`mechanism` : | The mechanism to use for key generation.
`public_attrs` : | Additional attributes for the generated public key.
`private_attrs` : | Additional attributes for the generated private key.
`cancellable` : | Optional cancellation object or NULL.
`callback` : | Called when the operation completes.
`user_data` : | Data to pass to the callback.

### gck_session_generate_key_pair_finish ()

    gboolean            gck_session_generate_key_pair_finish
                                                            (GckSession *self,
                                                             GAsyncResult *result,
                                                             GckObject **public_key,
                                                             GckObject **private_key,
                                                             GError **error);

Get the result of a generate key pair operation.

`self` : | The session to use.
`result` : | The async result passed to the callback.
`public_key` : | A location to return the resulting public key.
`private_key` : | A location to return the resulting private key.
`error` : | A location to return an error.
Returns : | TRUE if the operation succeeded.

### gck_session_generate_key_pair_full ()

    gboolean            gck_session_generate_key_pair_full  (GckSession *self,
                                                             GckMechanism *mechanism,
                                                             GckAttributes *public_attrs,
                                                             GckAttributes *private_attrs,
                                                             GckObject **public_key,
                                                             GckObject **private_key,
                                                             GCancellable *cancellable,
                                                             GError **error);

Generate a new key pair of public and private keys. This call may block for an indefinite period.

`self` : | The session to use.
`mechanism` : | The mechanism to use for key generation.
`public_attrs` : | Additional attributes for the generated public key.
`private_attrs` : | Additional attributes for the generated private key.
`public_key` : | A location to return the resulting public key.
`private_key` : | A location to return the resulting private key.
`cancellable` : | Optional cancellation object, or NULL.
`error` : | A location to return an error, or NULL.
Returns : | TRUE if the operation succeeded.

### gck_session_get_options ()

    guint               gck_session_get_options             (GckSession *self);

Get the options this session was opened with.

`self` : | The session to get options from.
Returns : | The session options.

### gck_session_get_state ()

    gulong              gck_session_get_state               (GckSession *self);

### gck_session_get_type ()

    GType               gck_session_get_type                (void);

### gck_session_init_pin ()

    gboolean            gck_session_init_pin                (GckSession *self,
                                                             const guchar *pin,
                                                             gsize n_pin,
                                                             GCancellable *cancellable,
                                                             GError **error);

Initialize the user's pin on this slot that this session is opened on. According to the PKCS#11 standards, the session must be logged in with the CKU_SO user type.

This call may block for an indefinite period.

`self` : | Initialize PIN for this session's slot.
`pin` : | The user's PIN, or NULL for protected authentication path.
`n_pin` : | The length of the PIN.
`cancellable` : | Optional cancellation object, or NULL.
`error` : | A location to return an error.
Returns : | Whether successful or not.

### gck_session_init_pin_async ()

    void                gck_session_init_pin_async          (GckSession *self,
                                                             const guchar *pin,
                                                             gsize n_pin,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Initialize the user's pin on this slot that this session is opened on. According to the PKCS#11 standards, the session must be logged in with the CKU_SO user type.

This call will return immediately and completes asynchronously.

`self` : | Initialize PIN for this session's slot.
`pin` : | The user's PIN, or NULL for protected authentication path.
`n_pin` : | The length of the PIN.
`cancellable` : | Optional cancellation object, or NULL.
`callback` : | Called when the operation completes.
`user_data` : | Data to pass to the callback.

### gck_session_init_pin_finish ()

    gboolean            gck_session_init_pin_finish         (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);

Get the result of initializing a user's PIN.

`self` : | The session.
`result` : | The result passed to the callback.
`error` : | A location to return an error.
Returns : | Whether the operation was successful or not.

### gck_session_set_pin ()

    gboolean            gck_session_set_pin                 (GckSession *self,
                                                             const guchar *old_pin,
                                                             gsize n_old_pin,
                                                             const guchar *new_pin,
                                                             gsize n_new_pin,
                                                             GCancellable *cancellable,
                                                             GError **error);

Change the user's pin on this slot that this session is opened on.

This call may block for an indefinite period.

`self` : | Change the PIN for this session's slot.
`old_pin` : | The user's old PIN, or NULL for protected authentication path.
`n_old_pin` : | The length of the PIN.
`new_pin` : | The user's new PIN, or NULL for protected authentication path.
`n_new_pin` : | The length of the PIN.
`cancellable` : | Optional cancellation object, or NULL.
`error` : | A location to return an error.
Returns : | Whether successful or not.

### gck_session_set_pin_async ()

    void                gck_session_set_pin_async           (GckSession *self,
                                                             const guchar *old_pin,
                                                             gsize n_old_pin,
                                                             const guchar *new_pin,
                                                             gsize n_new_pin,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Change the user's pin on this slot that this session is opened on.

This call will return immediately and completes asynchronously.

`self` : | Change the PIN for this session's slot.
`old_pin` : | The user's old PIN, or NULL for protected authentication path.
`n_old_pin` : | The length of the PIN.
`new_pin` : | The user's new PIN, or NULL for protected authentication path.
`n_new_pin` : | The length of the PIN.
`cancellable` : | Optional cancellation object, or NULL.
`callback` : | Called when the operation completes.
`user_data` : | Data to pass to the callback.

### gck_session_set_pin_finish ()

    gboolean            gck_session_set_pin_finish          (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);

Get the result of changing a user's PIN.

`self` : | The session.
`result` : | The result passed to the callback.
`error` : | A location to return an error.
Returns : | Whether the operation was successful or not.

### gck_session_unwrap_key ()

    GckObject *         gck_session_unwrap_key              (GckSession *self,
                                                             GckObject *wrapper,
                                                             gulong mech_type,
                                                             gconstpointer input,
                                                             gsize n_input,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GError **error);

Unwrap a key from a byte stream. This call may block for an indefinite period.

`self` : | The session to use.
`wrapper` : | The key to use for unwrapping.
`mech_type` : | The mechanism to use for unwrapping.
`input` : | The wrapped data as a byte stream.
`n_input` : | The length of the wrapped data.
`attrs` : | Additional attributes for the unwrapped key.
`cancellable` : | Optional cancellation object, or NULL.
`error` : | A location to return an error, or NULL.
Returns : | The new unwrapped key or NULL if the operation failed.

### gck_session_unwrap_key_async ()

    void                gck_session_unwrap_key_async        (GckSession *self,
                                                             GckObject *wrapper,
                                                             GckMechanism *mechanism,
                                                             gconstpointer input,
                                                             gsize n_input,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Unwrap a key from a byte stream. This call will return immediately and complete asynchronously.

`self` : | The session to use.
`wrapper` : | The key to use for unwrapping.
`mechanism` : | The mechanism to use for unwrapping.
`input` : | The wrapped data as a byte stream.
`n_input` : | The length of the wrapped data.
`attrs` : | Additional attributes for the unwrapped key.
`cancellable` : | Optional cancellation object or NULL.
`callback` : | Called when the operation completes.
`user_data` : | Data to pass to the callback.

### gck_session_unwrap_key_finish ()

    GckObject *         gck_session_unwrap_key_finish       (GckSession *self,
                                                             GAsyncResult *result,
                                                             GError **error);

Get the result of a unwrap key operation.

`self` : | The session to use.
`result` : | The async result passed to the callback.
`error` : | A location to return an error.
Returns : | The new unwrapped key or NULL if the operation failed.

### gck_session_unwrap_key_full ()

    GckObject *         gck_session_unwrap_key_full         (GckSession *self,
                                                             GckObject *wrapper,
                                                             GckMechanism *mechanism,
                                                             gconstpointer input,
                                                             gsize n_input,
                                                             GckAttributes *attrs,
                                                             GCancellable *cancellable,
                                                             GError **error);

Unwrap a key from a byte stream. This call may block for an indefinite period.

`self` : | The session to use.
`wrapper` : | The key to use for unwrapping.
`mechanism` : | The mechanism to use for unwrapping.
`input` : | The wrapped data as a byte stream.
`n_input` : | The length of the wrapped data.
`attrs` : | Additional attributes for the unwrapped key.
`cancellable` : | Optional cancellation object, or NULL.
`error` : | A location to return an error, or NULL.
Returns : | The new unwrapped key or NULL if the operation failed.

### gck_session_wrap_key ()

    gpointer            gck_session_wrap_key                (GckSession *self,
                                                             GckObject *wrapper,
                                                             gulong mech_type,
                                                             GckObject *wrapped,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);

Wrap a key into a byte stream. This call may block for an indefinite period.

`self` : | The session to use.
`wrapper` : | The key to use for wrapping.
`mech_type` : | The mechanism type to use for wrapping.
`wrapped` : | The key to wrap.
`n_result` : | A location in which to return the length of the wrapped data.
`cancellable` : | A GCancellable or `NULL`
`error` : | A location to return an error, or NULL.
Returns : | The wrapped data or NULL if the operation failed.

### gck_session_wrap_key_async ()

    void                gck_session_wrap_key_async          (GckSession *self,
                                                             GckObject *wrapper,
                                                             GckMechanism *mechanism,
                                                             GckObject *wrapped,
                                                             GCancellable *cancellable,
                                                             GAsyncReadyCallback callback,
                                                             gpointer user_data);

Wrap a key into a byte stream. This call will return immediately and complete asynchronously.

`self` : | The session to use.
`wrapper` : | The key to use for wrapping.
`mechanism` : | The mechanism to use for wrapping.
`wrapped` : | The key to wrap.
`cancellable` : | Optional cancellation object or NULL.
`callback` : | Called when the operation completes.
`user_data` : | Data to pass to the callback.

### gck_session_wrap_key_finish ()

    gpointer            gck_session_wrap_key_finish         (GckSession *self,
                                                             GAsyncResult *result,
                                                             gsize *n_result,
                                                             GError **error);

Get the result of a wrap key operation.

`self` : | The session to use.
`result` : | The async result passed to the callback.
`n_result` : | A location in which to return the length of the wrapped data.
`error` : | A location to return an error.
Returns : | The wrapped data or NULL if the operation failed.

### gck_session_wrap_key_full ()

    gpointer            gck_session_wrap_key_full           (GckSession *self,
                                                             GckObject *wrapper,
                                                             GckMechanism *mechanism,
                                                             GckObject *wrapped,
                                                             gsize *n_result,
                                                             GCancellable *cancellable,
                                                             GError **error);

Wrap a key into a byte stream. This call may block for an indefinite period.

`self` : | The session to use.
`wrapper` : | The key to use for wrapping.
`mechanism` : | The mechanism to use for wrapping.
`wrapped` : | The key to wrap.
`n_result` : | A location in which to return the length of the wrapped data.
`cancellable` : | Optional cancellation object, or NULL.
`error` : | A location to return an error, or NULL.
Returns : | The wrapped data or NULL if the operation failed.

### GckSessionInfo

    typedef struct {
    	gulong slot_id;
    	gulong state;
    	gulong flags;
    	gulong device_error;
    } GckSessionInfo;

Information about the session. This is analogous to a CK_SESSION_INFO structure.

When done with this structure, release it using `gck_session_info_free()`.

gulong `slot_id`; | The handle of the PKCS11 slot that this session is opened on.
gulong `state`; | The user login state of the session.
gulong `flags`; | Various PKCS11 flags.
gulong `device_error`; | The last device error that occurred from an operation on this session.

### gck_session_info_free ()

    void                gck_session_info_free               (GckSessionInfo *session_info);

Free the GckSessionInfo structure and all associated memory.

`session_info` : | Session info to free.

### GckMechanism

    typedef struct {
    	gulong type;
    	gconstpointer parameter;
    	gulong n_parameter;
    } GckMechanism;

Represents a mechanism used with crypto operations.

gulong `type`; | The mechanism type
gconstpointer `parameter`; | Mechanism specific data.
gulong `n_parameter`; | Length of mechanism specific data.