Add gnutls bindings

Fixes bug 594392.

2 files changed, 1904 insertions, 0 deletions

diff --git a/vapi/Makefile.am b/vapi/Makefile.am
index a6cdec66e..9edfc1b6a 100644
--- a/vapi/Makefile.am
+++ b/vapi/Makefile.am
@@ -42,6 +42,7 @@ dist_vapi_DATA = \
 	gnome-desktop-2.0.vapi \
 	gnome-keyring-1.vapi \
 	gnome-vfs-2.0.vapi \
+	gnutls.vapi \
 	gobject-2.0.vapi \
 	goocanvas.deps \
 	goocanvas.vapi \
diff --git a/vapi/gnutls.vapi b/vapi/gnutls.vapi
new file mode 100644
index 000000000..fae83b382
--- /dev/null
+++ b/vapi/gnutls.vapi
@@ -0,0 +1,1903 @@
+/* gnutls.vapi
+ *
+ * Copyright (C) 2009  Jiří Zárevúcky
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+ *
+ * As a special exception, if you use inline functions from this file, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU Lesser General Public License.
+ *
+ * Author:
+ * 	Jiří Zárevúcky <zarevucky.jiri@gmail.com>
+ *
+ */
+
+[CCode (cprefix = "gnutls_", lower_case_cprefix = "gnutls_", cheader_filename = "gnutls/gnutls.h")]
+namespace GnuTLS
+{
+	[CCode (cname = "LIBGNUTLS_VERSION")]
+	public const string VERSION;
+	[CCode (cname = "LIBGNUTLS_VERSION_MAJOR")]
+	public const int VERSION_MAJOR;
+	[CCode (cname = "LIBGNUTLS_VERSION_MINOR")]
+	public const int VERSION_MINOR;
+	[CCode (cname = "LIBGNUTLS_VERSION_PATCH")]
+	public const int VERSION_PATCH;
+	[CCode (cname = "LIBGNUTLS_VERSION_NUMBER")]
+	public const int VERSION_NUMBER;
+
+	public unowned string? check_version (string? req_version);
+
+	[CCode (cname = "gnutls_cipher_algorithm_t", cprefix = "GNUTLS_CIPHER_")]
+	public enum CipherAlgorithm {
+		UNKNOWN,
+		NULL,
+		ARCFOUR_128,
+		3DES_CBC,
+		AES_128_CBC,
+		AES_256_CBC,
+		ARCFOUR_40,
+		CAMELLIA_128_CBC,
+		CAMELLIA_256_CBC,
+		RC2_40_CBC,
+		DES_CBC,
+
+		RIJNDAEL_128_CBC,    // == AES_128_CBC
+		RIJNDAEL_256_CBC,    // == AES_256_CBC
+		RIJNDAEL_CBC,        // == AES_128_CBC
+		ARCFOUR;             // == ARCFOUR_128
+
+		[CCode (cname = "gnutls_cipher_get_key_size")]
+		public size_t get_key_size ();
+		[CCode (cname = "gnutls_cipher_get_name")]
+		public unowned string? get_name ();
+		[CCode (cname = "gnutls_mac_get_id")]
+		public static CipherAlgorithm from_name (string name);
+		[CCode (cname = "gnutls_cipher_list", array_length = "false", array_null_terminated = "true")]
+		public static unowned CipherAlgorithm[] list ();
+	}
+
+	[CCode (cname = "gnutls_kx_algorithm_t", cprefix = "GNUTLS_KX_")]
+	public enum KXAlgorithm	{
+		UNKNOWN,
+		RSA,
+		DHE_DSS,
+		DHE_RSA,
+		ANON_DH,
+		SRP,
+		RSA_EXPORT,
+		SRP_RSA,
+		SRP_DSS,
+		PSK,
+		DHE_PSK;
+
+		[CCode (cname = "gnutls_kx_get_name")]
+		public unowned string? get_name ();
+		[CCode (cname = "gnutls_kx_get_id")]
+		public static KXAlgorithm from_name (string name);
+		[CCode (cname = "gnutls_kx_list", array_length = "false", array_null_terminated = "true")]
+		public static unowned KXAlgorithm[] list ();
+	}
+
+	[CCode (cname = "gnutls_mac_algorithm_t", cprefix = "GNUTLS_MAC_")]
+	public enum MacAlgorithm {
+		UNKNOWN,
+		NULL,
+		MD5,
+		SHA1,
+		RMD160,
+		MD2,
+		SHA256,
+		SHA384,
+		SHA512;
+
+		[CCode (cname = "gnutls_mac_get_key_size")]
+		public size_t get_key_size ();
+		[CCode (cname = "gnutls_mac_get_name")]
+		public unowned string? get_name ();
+		[CCode (cname = "gnutls_mac_get_id")]
+		public static MacAlgorithm from_name (string name);
+		[CCode (cname = "gnutls_mac_list", array_length = "false", array_null_terminated = "true")]
+		public static unowned MacAlgorithm[] list ();
+	}
+
+	[CCode (cname = "gnutls_digest_algorithm_t", cprefix = "GNUTLS_DIG_")]
+	public enum DigestAlgorithm {
+		NULL,
+		MD5,
+		SHA1,
+		RMD160,
+		MD2,
+		SHA224,
+		SHA256,
+		SHA384,
+		SHA512;
+
+		[CCode (cname = "gnutls_fingerprint")]
+		public int fingerprint (/* const */ ref Datum data, void* result, ref size_t result_size);
+	}
+
+	[CCode (cname = "GNUTLS_MAX_ALGORITHM_NUM")]
+	public const int MAX_ALGORITHM_NUM;
+
+	[CCode (cname = "gnutls_pk_algorithm_t", cprefix = "GNUTLS_PK_")]
+	public enum PKAlgorithm {
+		UNKNOWN,
+		RSA,
+		DSA;
+
+		[CCode (cname = "gnutls_pk_algorithm_get_name")]
+		public unowned string? get_name ();
+	}
+
+	[CCode (cname = "gnutls_sign_algorithm_t", cprefix = "GNUTLS_SIGN_")]
+	public enum SignAlgorithm {
+		UNKNOWN,
+		RSA_SHA1,
+		DSA_SHA1,
+		RSA_MD5,
+		RSA_MD2,
+		RSA_RMD160,
+		RSA_SHA224,
+		RSA_SHA256,
+		RSA_SHA384,
+		RSA_SHA512;
+
+		[CCode (cname = "gnutls_sign_algorithm_get_name")]
+		public unowned string? get_name ();
+	}
+
+	[CCode (cname = "gnutls_compression_method_t", cprefix = "GNUTLS_COMP_")]
+	public enum CompressionMethod {
+		UNKNOWN,
+		NULL,
+		DEFLATE,
+		ZLIB,     // == DEFLATE
+		LZO;      // only available if gnutls-extra has been initialized
+
+		[CCode (cname = "gnutls_compression_get_name")]
+		public unowned string? get_name ();
+		[CCode (cname = "gnutls_compression_get_id")]
+		public static CompressionMethod from_name (string name);
+		[CCode (cname = "gnutls_compression_list", array_length = "false", array_null_terminated = "true")]
+		public static unowned CompressionMethod[] list ();
+	}
+
+	[CCode (cname = "gnutls_params_type_t", cprefix = "GNUTLS_PARAMS_")]
+	public enum ParamsType {
+		RSA_EXPORT,
+		DH
+	}
+
+	[CCode (cname = "gnutls_credentials_type_t", cprefix = "GNUTLS_CRD_")]
+	public enum CredentialsType {
+		CERTIFICATE,
+		ANON,
+		SRP,
+		PSK,
+		IA
+	}
+
+	[CCode (cname = "gnutls_alert_level_t", cprefix = "GNUTLS_AL_")]
+	public enum AlertLevel {
+		WARNING,
+		FATAL
+	}
+
+	[CCode (cname = "gnutls_alert_description_t", cprefix = "GNUTLS_A_")]
+	public enum AlertDescription {
+		CLOSE_NOTIFY,
+		UNEXPECTED_MESSAGE,
+		BAD_RECORD_MAC,
+		DECRYPTION_FAILED,
+		RECORD_OVERFLOW,
+		DECOMPRESSION_FAILURE,
+		HANDSHAKE_FAILURE,
+		SSL3_NO_CERTIFICATE,
+		BAD_CERTIFICATE,
+		UNSUPPORTED_CERTIFICATE,
+		CERTIFICATE_REVOKED,
+		CERTIFICATE_EXPIRED,
+		CERTIFICATE_UNKNOWN,
+		ILLEGAL_PARAMETER,
+		UNKNOWN_CA,
+		ACCESS_DENIED,
+		DECODE_ERROR,
+		DECRYPT_ERROR,
+		EXPORT_RESTRICTION,
+		PROTOCOL_VERSION,
+		INSUFFICIENT_SECURITY,
+		INTERNAL_ERROR,
+		USER_CANCELED,
+		NO_RENEGOTIATION,
+		UNSUPPORTED_EXTENSION,
+		CERTIFICATE_UNOBTAINABLE,
+		UNRECOGNIZED_NAME,
+		UNKNOWN_PSK_IDENTITY,
+		INNER_APPLICATION_FAILURE,
+		INNER_APPLICATION_VERIFICATION;
+
+		[CCode (cname = "gnutls_alert_get_name")]
+		public unowned string? get_name ();
+	}
+
+	[CCode (cname = "gnutls_handshake_description_t", cprefix = "GNUTLS_HANDSHAKE_")]
+	public enum HandshakeDescription {
+		HELLO_REQUEST,
+		CLIENT_HELLO,
+		SERVER_HELLO,
+		CERTIFICATE_PKT,
+		SERVER_KEY_EXCHANGE,
+		CERTIFICATE_REQUEST,
+		SERVER_HELLO_DONE,
+		CERTIFICATE_VERIFY,
+		CLIENT_KEY_EXCHANGE,
+		FINISHED,
+		SUPPLEMENTAL
+	}
+
+	/* Note that the status bits have different meanings
+	 * in openpgp keys and x.509 certificate verification.
+	 */
+	[Flags]
+	[CCode (cname = "gnutls_certificate_status_t", cprefix = "GNUTLS_CERT_")]
+	public enum CertificateStatus {
+		INVALID,             // will be set if the certificate was not verified.
+		REVOKED,             // in X.509 this will be set only if CRLs are checked
+		SIGNER_NOT_FOUND,
+		SIGNER_NOT_CA,
+		INSECURE_ALGORITHM
+	}
+
+	[CCode (cname = "gnutls_certificate_request_t", cprefix = "GNUTLS_CERT_")]
+	public enum CertificateRequest {
+		IGNORE,
+		REQUEST,
+		REQUIRE
+	}
+
+//	[CCode (cname = "gnutls_openpgp_crt_status_t", cprefix = "GNUTLS_OPENPGP_")]
+//	public enum OpenPGP.CertificateStatus {
+//		CERT,
+//		CERT_FINGERPRINT
+//	}
+//
+//	[CCode (cname = "gnutls_connection_end_t", cprefix = "GNUTLS_")]
+//	public enum ConnectionEnd {
+//		SERVER,
+//		CLIENT
+//	}
+
+	[CCode (cname = "gnutls_close_request_t", cprefix = "GNUTLS_SHUT_")]
+	public enum CloseRequest {
+		RDWR,
+		WR
+	}
+
+	[CCode (cname = "gnutls_protocol_t", cprefix = "GNUTLS_")]
+	public enum Protocol {
+		SSL3,
+		TLS1,    // == TLS1_0
+		TLS1_0,
+		TLS1_1,
+		TLS1_2,
+		[CCode (cname = "GNUTLS_VERSION_UNKNOWN")]
+		UNKNOWN;
+
+		[CCode (cname = "gnutls_protocol_get_name")]
+		public unowned string? get_name ();
+		[CCode (cname = "gnutls_protocol_get_id")]
+		public static Protocol from_name (string name);
+		[CCode (cname = "gnutls_protocol_list", array_length = "false", array_null_terminated = "true")]
+		public static unowned Protocol[] list ();
+	}
+
+	[CCode (cname = "gnutls_certificate_type_t", cprefix = "GNUTLS_CRT_")]
+	public enum CertificateType {
+		UNKNOWN,
+		X509,
+		OPENPGP;
+
+		[CCode (cname = "gnutls_certificate_type_get_name")]
+		public unowned string? get_name ();
+		[CCode (cname = "gnutls_certificate_type_get_id")]
+		public static CertificateType from_name (string name);
+		[CCode (cname = "gnutls_certificate_type_list", array_length = "false", array_null_terminated = "true")]
+		public static unowned CertificateType[] list ();
+	}
+
+	[CCode (cname = "gnutls_certificate_print_formats_t", cprefix = "GNUTLS_CRT_PRINT_")]
+	public enum CertificatePrintFormats {
+		FULL,
+		ONELINE,
+		UNSIGNED_FULL
+	}
+
+	[Flags]
+	[CCode (cname = "unsigned int", cprefix = "GNUTLS_KEY_")]
+	public enum KeyUsage
+	{
+		DIGITAL_SIGNATURE,
+		NON_REPUDIATION,
+		KEY_ENCIPHERMENT,
+		DATA_ENCIPHERMENT,
+		KEY_AGREEMENT,
+		KEY_CERT_SIGN,
+		CRL_SIGN,
+		ENCIPHER_ONLY,
+		DECIPHER_ONLY
+	}
+
+	[CCode (cname = "gnutls_server_name_type_t", cprefix = "GNUTLS_NAME_")]
+	public enum ServerNameType {
+		DNS;
+	}
+
+	// Diffie Hellman parameter handling.
+	[Compact]
+	[CCode (cname = "struct gnutls_dh_params_int", free_function = "gnutls_dh_params_deinit", lower_case_cprefix = "gnutls_dh_params_")]
+	public class DHParams {
+		private static int init (DHParams* dh_params);
+		public static DHParams create ()
+		{
+			DHParams result = null;
+			var ret = init (&result);
+			if (ret != 0)
+				GLib.error ("%s", ((ErrorCode)ret).to_string ());
+			return result;
+		}
+
+		private int cpy (DHParams source);
+
+		public int import_raw (/* const */ ref Datum prime, /* const */ ref Datum generator);
+		public int export_raw (/* const */ ref Datum prime, /* const */ ref Datum generator, out uint bits);
+		public int import_pkcs3 (/* const */ ref Datum pkcs3_params, X509.CertificateFormat format);
+		public int export_pkcs3 (X509.CertificateFormat format, void* params_data, ref size_t params_data_size);
+
+		[CCode (cname = "gnutls_dh_params_generate2")]
+		public int generate (uint bits);
+	}
+
+	[Compact]
+	[CCode (cname = "struct gnutls_x509_privkey_int", free_function = "gnutls_rsa_params_deinit", lower_case_cprefix = "gnutls_rsa_params_")]
+	public class RSAParams {
+		private static int init (RSAParams* dh_params);
+		public static RSAParams create ()
+		{
+			RSAParams result = null;
+			var ret = init (&result);
+			if (ret != 0)
+				GLib.error ("%s", ((ErrorCode)ret).to_string ());
+			return result;
+		}
+
+		private int cpy (RSAParams source);
+
+		public int import_raw (/* const */ ref Datum m, /* const */ ref Datum e, /* const */ ref Datum d, /* const */ ref Datum p, /* const */ ref Datum q, /* const */ ref Datum u);
+		public int export_raw (/* const */ ref Datum m, /* const */ ref Datum e, /* const */ ref Datum d, /* const */ ref Datum p, /* const */ ref Datum q, /* const */ ref Datum u, out uint bits);
+		public int import_pkcs1 (/* const */ ref Datum pkcs1_params, X509.CertificateFormat format);
+		public int export_pkcs1 (X509.CertificateFormat format, void* params_data, ref size_t params_data_size);
+
+		public int generate2 (uint bits);
+	}
+
+	[Compact]
+	[CCode (cname = "struct gnutls_priority_st", free_function = "gnutls_priority_deinit")]
+	public class Priority {
+		private static int init (Priority* self, string priority, out char* err_pos);
+		public static Priority create (string priority, out ErrorCode err = null, out char* err_pos = null)
+		{
+			Priority result = null;
+			var ret = init (&result, priority, out err_pos);
+			if (&err != null)
+				err = (ErrorCode) ret;
+			return result;
+		}
+	}
+
+	[SimpleType]
+	[CCode (cname = "gnutls_datum_t")]
+	public struct Datum {
+		public void* data;
+		public uint size;
+	}
+
+	[CCode (cname = "gnutls_params_st")]
+	public struct Params {
+		public ParamsType type;
+		[CCode (cname = "params.dh")]
+		public DHParams dh_params;
+		[CCode (cname = "params.rsa_export")]
+		public RSAParams rsa_params;
+		public bool deinit;
+	}
+
+	[CCode (cname = "gnutls_params_function *")]
+	public static delegate int ParamsFunction (Session session, ParamsType type, Params params);
+
+	[CCode (cname = "gnutls_oprfi_callback_func", instance_pos = "1.2")]
+	public delegate int OprfiCallbackFunc (Session session,
+	                                       [CCode (array_length_pos = "1.8", array_length_type = "size_t")] /* const */ uint8[] in_oprfi,
+	                                       [CCode (array_length_pos = "1.8", array_length_type = "size_t")] uint8[] out_oprfi);
+
+	/* Supplemental data, RFC 4680. */
+	[CCode (cname = "gnutls_supplemental_data_format_type_t")]
+	public enum SupplementalDataFormatType {
+		USER_MAPPING_DATA;
+
+		[CCode (cname = "gnutls_supplemental_get_name")]
+		public unowned string? get_name ();
+	}
+
+	[CCode (cname = "TLS_MASTER_SIZE")]
+	public const int TLS_MASTER_SIZE;
+	[CCode (cname = "TLS_RANDOM_SIZE")]
+	public const int TLS_RANDOM_SIZE;
+
+	[CCode (cname = "gnutls_db_store_func")]
+	public static delegate int DBStoreFunc (void* ptr, Datum key, Datum data);
+	[CCode (cname = "gnutls_db_remove_func")]
+	public static delegate int DBRemoveFunc (void* ptr, Datum key);
+	[CCode (cname = "gnutls_db_retr_func")]
+	public static delegate Datum DBRetrieveFunc (void* ptr, Datum key);
+
+	[CCode (cname = "gnutls_handshake_post_client_hello_func")]
+	public static delegate int HandshakePostClientHelloFunc (Session session);
+
+	// External signing callback.  Experimental.
+	[CCode (cname = "gnutls_sign_func", instance_pos = "1.9")]
+	public delegate int SignFunc (Session session, CertificateType cert_type, /* const */ ref Datum cert, /* const */ ref Datum hash, out Datum signature);
+
+	[CCode (cname = "gnutls_pull_func")]
+	public static delegate ssize_t PullFunc (void* transport_ptr, void* buffer, size_t count);
+	[CCode (cname = "gnutls_push_func")]
+	public static delegate ssize_t PushFunc (void* transport_ptr, void* buffer, size_t count);
+
+	[Compact]
+	[CCode (cname = "struct gnutls_session_int", free_function = "gnutls_deinit")]
+	public class Session {
+		[CCode (cname = "gnutls_init")]
+		private static int init (Session* session, int con_end);
+
+		protected static Session create (int con_end)
+		{
+			Session result = null;
+			var ret = init (&result, con_end);
+			if (ret != 0)
+				GLib.error ("%s", ((ErrorCode)ret).to_string ());
+			return result;
+		}
+
+		[CCode (cname = "gnutls_credentials_set")]
+		public int set_credentials (CredentialsType type, void* cred);
+		[CCode (cname = "gnutls_credentials_clear")]
+		public void clear_credentials ();
+
+		[CCode (cname = "gnutls_handshake")]
+		public int handshake ();
+		[CCode (cname = "gnutls_bye")]
+		public int bye (CloseRequest how);
+
+		[CCode (cname = "gnutls_session_is_resumed")]
+		public bool is_resumed ();
+
+		[CCode (cname = "gnutls_alert_get")]
+		public AlertDescription get_last_alert ();
+		[CCode (cname = "gnutls_alert_send")]
+		public int send_alert (AlertLevel level, AlertDescription desc);
+		[CCode (cname = "gnutls_alert_send_appropriate")]
+		public int send_appropriate_alert (ErrorCode err);
+
+		[CCode (cname = "gnutls_cipher_get")]
+		public CipherAlgorithm get_cipher ();
+		[CCode (cname = "gnutls_kx_get")]
+		public KXAlgorithm get_kx ();
+		[CCode (cname = "gnutls_mac_get")]
+		public MacAlgorithm get_mac ();
+		[CCode (cname = "gnutls_compression_get")]
+		public CompressionMethod get_compression ();
+		[CCode (cname = "gnutls_certificate_type_get")]
+		public CertificateType get_certificate_type ();
+		[CCode (cname = "gnutls_protocol_get_version")]
+		public Protocol get_protocol_version ();
+		[CCode (cname = "gnutls_record_get_max_size")]
+		public size_t get_max_record_size ();
+		[CCode (cname = "gnutls_dh_get_prime_bits")]
+		public int get_dh_prime_bits ();
+		[CCode (cname = "gnutls_dh_get_secret_bits")]
+		public int get_dh_secret_bits ();
+		[CCode (cname = "gnutls_dh_get_peers_public_bits")]
+		public int get_peers_dh_public_bits ();
+		[CCode (cname = "gnutls_dh_get_group")]
+		public int get_dh_group (out Datum raw_gen, out Datum raw_prime);
+		[CCode (cname = "gnutls_dh_get_pubkey")]
+		public int get_dh_pubkey (out Datum raw_key);
+		[CCode (cname = "gnutls_rsa_export_get_pubkey")]
+		public int get_rsa_export_pubkey (out Datum exponent, out Datum modulus);
+		[CCode (cname = "gnutls_rsa_export_get_modulus_bits")]
+		public int get_rsa_export_modulus_bits ();
+
+		[CCode (cname = "gnutls_handshake_set_private_extensions")]
+		public void allow_private_extensions (bool allow);
+		[CCode (cname = "gnutls_handshake_get_last_out")]
+		public HandshakeDescription get_last_out_handshake ();
+		[CCode (cname = "gnutls_handshake_get_last_in")]
+		public HandshakeDescription get_last_in_handshake ();
+
+		[CCode (cname = "gnutls_record_send")]
+		public ssize_t send (void* buffer, size_t count);
+		[CCode (cname = "gnutls_record_recv")]
+		public ssize_t receive (void* buffer, size_t count);
+
+		[CCode (cname = "gnutls_record_get_direction")]
+		public int get_last_direction ();
+
+		[CCode (cname = "gnutls_record_check_pending")]
+		public size_t check_pending ();
+
+		[CCode (cname = "gnutls_cipher_set_priority")]
+		public int set_cipher_priority ([CCode (array_length = "false", array_null_terminated = "true")] CipherAlgorithm[] list);
+		[CCode (cname = "gnutls_mac_set_priority")]
+		public int set_mac_priority ([CCode (array_length = "false", array_null_terminated = "true")] MacAlgorithm[] list);
+		[CCode (cname = "gnutls_compression_set_priority")]
+		public int set_compression_priority ([CCode (array_length = "false", array_null_terminated = "true")] CompressionMethod[] list);
+		[CCode (cname = "gnutls_kx_set_priority")]
+		public int set_kx_priority ([CCode (array_length = "false", array_null_terminated = "true")] KXAlgorithm[] list);
+		[CCode (cname = "gnutls_protocol_set_priority")]
+		public int set_protocol_priority ([CCode (array_length = "false", array_null_terminated = "true")] Protocol[] list);
+		[CCode (cname = "gnutls_certificate_type_set_priority")]
+		public int set_certificate_type_priority ([CCode (array_length = "false", array_null_terminated = "true")] CertificateType[] list);
+
+		[CCode (cname = "gnutls_priority_set")]
+		public int set_priority (Priority priority);
+		[CCode (cname = "gnutls_priority_set_direct")]
+		public int set_priority_from_string (string priority, out char* err_pos = null);
+		[CCode (cname = "gnutls_set_default_priority")]
+		public int set_default_priority ();
+		[CCode (cname = "gnutls_set_default_export_priority")]
+		public int set_default_export_priority ();
+
+		[CCode (cname = "GNUTLS_MAX_SESSION_ID")]
+		public const int MAX_SESSION_ID;
+
+		[CCode (cname = "gnutls_session_get_id")]
+		public int get_id (void* session_id, ref size_t session_id_size);
+
+		[CCode (cname = "gnutls_session_get_server_random")]
+		public void* get_server_random ();
+		[CCode (cname = "gnutls_session_get_client_random")]
+		public void* get_client_random ();
+		[CCode (cname = "gnutls_session_get_master_secret")]
+		public void* get_master_secret ();
+
+		[CCode (cname = "gnutls_transport_set_ptr")]
+		public void set_transport_ptr (void* ptr);
+		[CCode (cname = "gnutls_transport_set_ptr2")]
+		public void set_transport_ptr2 (void* recv_ptr, void* send_ptr);
+		[CCode (cname = "gnutls_transport_set_lowat")]
+		public void set_lowat (int num);
+		[CCode (cname = "gnutls_transport_set_push_function")]
+		public void set_push_function (PushFunc func);
+		[CCode (cname = "gnutls_transport_set_pull_function")]
+		public void set_pull_function (PullFunc func);
+
+		[CCode (cname = "gnutls_transport_set_errno")]
+		public void set_errno (int err);
+
+		[CCode (cname = "gnutls_session_set_ptr")]
+		public void set_ptr (void* ptr);
+		[CCode (cname = "gnutls_session_get_ptr")]
+		public void* get_ptr ();
+
+		[CCode (cname = "gnutls_auth_get_type")]
+		public CredentialsType get_auth_type ();
+	//	[CCode (cname = "gnutls_auth_server_get_type")]
+	//	public CredentialsType get_server_auth_type ();
+	//	[CCode (cname = "gnutls_auth_client_get_type")]
+	//	public CredentialsType get_client_auth_type ();
+
+		[CCode (cname = "gnutls_sign_callback_set")]
+		public void set_sign_callback (SignFunc func);
+		[CCode (cname = "gnutls_sign_callback_get")]
+		public SignFunc get_sign_callback ();
+
+		[CCode (cname = "gnutls_certificate_get_peers", array_length_type = "unsigned int")]
+		public unowned Datum[]? get_peer_certificates ();
+		[CCode (cname = "gnutls_certificate_get_ours")]
+		public unowned Datum? get_our_certificate ();
+
+		[CCode (cname = "gnutls_certificate_verify_peers2")]
+		public int verify_peer_certificate (out CertificateStatus status);
+	}
+
+	[CCode (cname = "struct gnutls_session_int", lower_case_cprefix = "gnutls_", free_function = "gnutls_deinit")]
+	public class ClientSession: Session {
+
+		public static ClientSession create ()
+		{
+			return (ClientSession) Session.create (2);
+		}
+
+		[CCode (cname = "gnutls_record_set_max_size")]
+		public ssize_t set_max_record_size (size_t size);
+
+		[CCode (cname = "gnutls_dh_set_prime_bits")]
+		public void set_dh_prime_bits (uint bits);
+
+		[CCode (cname = "gnutls_server_name_get")]
+		public int get_server_name (void* data, out size_t data_length, out ServerNameType type, uint index);
+
+		[CCode (cname = "gnutls_oprfi_enable_client")]
+		public void enable_oprfi ([CCode (array_length_pos = "0.9", array_length_type = "size_t")] uint8[] data);
+
+		[CCode (cname = "gnutls_session_set_data")]
+		public int set_session_data (void* session_data, size_t session_data_size);
+		[CCode (cname = "gnutls_session_get_data")]
+		public int get_session_data (void* session_data, out size_t session_data_size);
+		[CCode (cname = "gnutls_session_get_data2")]
+		public int get_session_data2 (out Datum data);
+
+		[CCode (cname = "gnutls_openpgp_send_cert")]
+		public void set_openpgp_send_cert (bool fingerprint_only);
+
+		[CCode (cname = "gnutls_psk_client_get_hint")]
+		public unowned string get_psk_hint ();
+
+		[CCode (cname = "gnutls_certificate_client_get_request_status")]
+		public int get_certificate_request_status ();
+	}
+
+	[CCode (cname = "struct gnutls_session_int", lower_case_cprefix = "gnutls_", free_function = "gnutls_deinit")]
+	public class ServerSession: Session {
+
+		public static ServerSession create ()
+		{
+			return (ServerSession) Session.create (1);
+		}
+
+		public int rehandshake ();
+
+		[CCode (cname = "gnutls_session_enable_compatibility_mode")]
+		public void enable_compatibility_mode ();
+
+		[CCode (cname = "gnutls_record_disable_padding")]
+		public void disable_record_padding ();
+
+		[CCode (cname = "gnutls_server_name_set")]
+		public int set_server_name (ServerNameType type, void* data, size_t data_length);
+
+		[CCode (cname = "gnutls_oprfi_enable_server")]
+		public void enable_oprfi (OprfiCallbackFunc cb);
+
+		public void db_set_cache_expiration (int seconds);
+		public void db_remove_session ();
+		public void db_set_retrieve_function (DBRetrieveFunc func);
+		public void db_set_remove_function (DBRemoveFunc func);
+		public void db_set_store_function (DBStoreFunc func);
+		public void db_set_ptr (void* ptr);
+		public void* db_get_ptr ();
+		public int db_check_entry (Datum session_entry);
+
+		[CCode (cname = "gnutls_handshake_set_post_client_hello_function")]
+		public void set_post_client_hello_function (HandshakePostClientHelloFunc func);
+
+		[CCode (cname = "gnutls_handshake_set_max_packet_length")]
+		public void set_max_handshake_packet_length (size_t max);
+
+		[CCode (cname = "gnutls_certificate_server_set_request")]
+		public void set_certificate_request (CertificateRequest req);
+
+		[CCode (cname = "gnutls_certificate_send_x509_rdn_sequence")]
+		public void disable_sending_x509_rdn_sequence (bool disable);
+
+		[CCode (cname = "gnutls_psk_server_get_username")]
+		public unowned string get_psk_username ();
+
+		[CCode (cheader_filename = "gnutls/openpgp.h", cname = "gnutls_openpgp_set_recv_key_function")]
+		public void set_openpgp_recv_key_function (OpenPGP.RecvKeyFunc func);
+	}
+
+
+	[Compact]
+	[CCode (cname = "struct gnutls_anon_server_credentials_st", free_function = "gnutls_anon_free_server_credentials")]
+	public class AnonServerCredentials
+	{
+		[CCode (cname = "gnutls_anon_allocate_server_credentials")]
+		private static int allocate (AnonServerCredentials* credentials);
+		public static AnonServerCredentials create ()
+		{
+			AnonServerCredentials result = null;
+			var ret = allocate (&result);
+			if (ret != 0)
+				GLib.error ("%s", ((ErrorCode)ret).to_string ());
+			return result;
+		}
+
+
+		[CCode (cname = "gnutls_anon_set_server_dh_params")]
+		public void set_dh_params (DHParams dh_params);
+
+	//	[CCode (cname = "gnutls_anon_set_server_params_function")]
+	//	public void set_server_params_function (ParamsFunction func);
+
+		[CCode (cname = "gnutls_anon_set_params_function")]
+		public void set_params_function (ParamsFunction func);
+	}
+
+	[Compact]
+	[CCode (cname = "struct gnutls_anon_client_credentials_st", free_function = "gnutls_anon_free_client_credentials")]
+	public class AnonClientCredentials
+	{
+		[CCode (cname = "gnutls_anon_allocate_client_credentials")]
+		private static int allocate (AnonClientCredentials* credentials);
+		public static AnonClientCredentials create ()
+		{
+			AnonClientCredentials result = null;
+			var ret = allocate (&result);
+			if (ret != 0)
+				GLib.error ("%s", ((ErrorCode)ret).to_string ());
+			return result;
+		}
+	}
+
+	[CCode (cheader_filename = "gnutls/x509.h", cprefix = "GNUTLS_")]
+	namespace X509
+	{
+		// Some OIDs usually found in Distinguished names, or
+		// in Subject Directory Attribute extensions.
+
+		public const string OID_X520_COUNTRY_NAME;
+		public const string OID_X520_ORGANIZATION_NAME;
+		public const string OID_X520_ORGANIZATIONAL_UNIT_NAME;
+		public const string OID_X520_COMMON_NAME;
+		public const string OID_X520_LOCALITY_NAME;
+		public const string OID_X520_STATE_OR_PROVINCE_NAME;
+
+		public const string OID_X520_INITIALS;
+		public const string OID_X520_GENERATION_QUALIFIER;
+		public const string OID_X520_SURNAME;
+		public const string OID_X520_GIVEN_NAME;
+		public const string OID_X520_TITLE;
+		public const string OID_X520_DN_QUALIFIER;
+		public const string OID_X520_PSEUDONYM;
+
+		public const string OID_LDAP_DC;
+		public const string OID_LDAP_UID;
+
+		// The following should not be included in DN.
+
+		public const string OID_PKCS9_EMAIL;
+
+		public const string OID_PKIX_DATE_OF_BIRTH;
+		public const string OID_PKIX_PLACE_OF_BIRTH;
+		public const string OID_PKIX_GENDER;
+		public const string OID_PKIX_COUNTRY_OF_CITIZENSHIP;
+		public const string OID_PKIX_COUNTRY_OF_RESIDENCE;
+
+		// Key purpose Object Identifiers.
+
+		public const string KP_TLS_WWW_SERVER;
+		public const string KP_TLS_WWW_CLIENT;
+		public const string KP_CODE_SIGNING;
+		public const string KP_EMAIL_PROTECTION;
+		public const string KP_TIME_STAMPING;
+		public const string KP_OCSP_SIGNING;
+		public const string KP_ANY;
+
+
+		[CCode (cname = "gnutls_x509_crt_fmt_t", cprefix = "GNUTLS_X509_FMT_")]
+		public enum CertificateFormat {
+			DER,
+			PEM
+		}
+
+		[Flags]
+		[CCode (cname = "gnutls_certificate_import_flags", cprefix = "GNUTLS_X509_CRT_")]
+		public enum CertificateImportFlags {
+			/* Fail if the certificates in the buffer are more than the space
+			* allocated for certificates. The error code will be
+			* GNUTLS_E_SHORT_MEMORY_BUFFER.
+			*/
+			LIST_IMPORT_FAIL_IF_EXCEED    // == 1
+		}
+
+		[Flags]
+		[CCode (cname = "unsigned int", cprefix = "GNUTLS_CRL_REASON_")]
+		public enum RevocationReasons {
+			UNUSED,
+			KEY_COMPROMISE,
+			CA_COMPROMISE,
+			AFFILIATION_CHANGED,
+			SUPERSEEDED,
+			CESSATION_OF_OPERATION,
+			CERTIFICATE_HOLD,
+			PRIVILEGE_WITHDRAWN,
+			AA_COMPROMISE
+		}
+
+		[Flags]
+		[CCode (cname = "gnutls_certificate_verify_flags", cprefix = "GNUTLS_VERIFY_")]
+		public enum CertificateVerifyFlags
+		{
+			// If set a signer does not have to be a certificate authority. This
+			// flag should normaly be disabled, unless you know what this means.
+			DISABLE_CA_SIGN,
+
+			// Allow only trusted CA certificates that have version 1.  This is
+			// safer than GNUTLS_VERIFY_ALLOW_ANY_X509_V1_CA_CRT, and should be
+			// used instead. That way only signers in your trusted list will be
+			// allowed to have certificates of version 1.
+			ALLOW_X509_V1_CA_CRT,
+
+			// If a certificate is not signed by anyone trusted but exists in
+			// the trusted CA list do not treat it as trusted.
+			DO_NOT_ALLOW_SAME,
+
+			// Allow CA certificates that have version 1 (both root and
+			// intermediate). This might be dangerous since those haven't the
+			// basicConstraints extension. Must be used in combination with
+			// GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT.
+			ALLOW_ANY_X509_V1_CA_CRT,
+
+			// Allow certificates to be signed using the broken MD2 algorithm.
+			ALLOW_SIGN_RSA_MD2,
+
+			// Allow certificates to be signed using the broken MD5 algorithm.
+			ALLOW_SIGN_RSA_MD5
+		}
+
+		[CCode (cname = "gnutls_x509_subject_alt_name_t")]
+		public enum SubjectAltName {
+			DNSNAME,
+			RFC822NAME,
+			URI,
+			IPADDRESS,
+			OTHERNAME,
+			DN,
+
+			OTHERNAME_XMPP
+		}
+
+		[Compact]
+		[CCode (cname = "void", cprefix = "gnutls_x509_dn_", free_function = "gnutls_x509_dn_deinit")]
+		public class DN
+		{
+			private static int init (DN* dn);
+			public static DN create ()
+			{
+				DN result = null;
+				var ret = init (&result);
+				if (ret != 0)
+					GLib.error ("%s", ((ErrorCode)ret).to_string ());
+				return result;
+			}
+
+			public int get_rdn_ava (int irdn, int iava, out unowned Ava ava);
+
+			public int import (ref Datum data);
+			public int export (CertificateFormat format, void* output, ref size_t output_size);
+
+		}
+
+		// RDN handling.
+		public int rdn_get (ref Datum idn, char* buf, ref size_t buf_size);
+		public int rdn_get_oid (ref Datum idn, int index, void* buf, ref size_t buf_size);
+		public int rdn_get_by_oid (ref Datum idn, string oid, int index, uint raw_flag, void* buf, ref size_t buf_size);
+
+		[SimpleType]
+		[CCode (cname = "gnutls_x509_ava_st")]
+		public struct Ava
+		{
+			[CCode (cname = "oid.data", array_length_name = "oid.size")]
+			uint8[] oid;
+			[CCode (cname = "value.data", array_length_name = "value.size")]
+			uint8[] value;
+			ulong value_tag;
+		}
+
+		[Compact]
+		[CCode (cname = "struct gnutls_x509_crt_int", cprefix = "gnutls_x509_crt_", free_function = "gnutls_x509_crt_deinit ")]
+		public class Certificate
+		{
+			private static int init (Certificate* cert);
+
+			public static Certificate create ()
+			{
+				Certificate result = null;
+				var ret = init (&result);
+				if (ret != 0)
+					GLib.error ("%s", ((ErrorCode)ret).to_string ());
+				return result;
+			}
+
+			public int import (ref Datum data, CertificateFormat format);
+			public int export (CertificateFormat format, void* output, ref size_t output_size);
+
+			public static int list_import ([CCode (array_length = "false")] Certificate[]? certs,
+			                               ref uint cert_max, ref Datum data,
+			                               CertificateFormat format, bool fail_if_exceed);
+
+
+
+			public int get_issuer_dn (char* buf, ref size_t buf_size);
+			public int get_issuer_dn_oid (int index, void* oid, ref size_t oid_size);
+			public int get_issuer_dn_by_oid (string oid, int index, uint raw_flag, void* buf, ref size_t buf_size);
+
+			public int get_dn (char* buf, ref size_t buf_size);
+			public int get_dn_oid (int index, void* oid, ref size_t oid_size);
+			public int get_dn_by_oid (string oid, int index, uint raw_flag, void* buf, ref size_t buf_size);
+
+
+			public int get_subject (out DN dn);
+			public int get_issuer (out DN dn);
+
+			public bool check_hostname (string hostname);
+
+			public SignAlgorithm get_signature_algorithm ();
+
+			public int get_signature (char* sig, ref size_t sig_size);
+
+			public int get_version ();
+
+			public int get_key_id (uint flags, uchar* output, ref size_t output_size);
+
+			public int set_authority_key_id (void* id, size_t id_size);
+			public int get_authority_key_id (void* ret, ref size_t ret_size, out bool critical);
+
+			public int get_subject_key_id (void* ret, ref size_t ret_size, out bool critical);
+
+			public int get_crl_dist_points (uint seq, void* ret, ref size_t ret_size, out RevocationReasons reason_flags, out bool critical);
+			public int set_crl_dist_points (SubjectAltName type, void* data_string, RevocationReasons reason_flags);
+			public int cpy_crl_dist_points (Certificate source);
+
+			public time_t get_activation_time ();
+			public time_t get_expiration_time ();
+
+			public int get_serial (void* result, ref size_t result_size);
+
+			public PKAlgorithm get_pk_algorithm (out uint bits);
+			public int get_pk_rsa_raw (out Datum modulus, out Datum exponent);
+			public int get_pk_dsa_raw (out Datum p, out Datum q, out Datum g, out Datum y);
+
+			public int get_subject_alt_name (uint seq, void* ret, ref size_t ret_size, out bool critical);
+			public int get_subject_alt_name2 (uint seq, void* ret, ref size_t ret_size, out SubjectAltName ret_type, out bool critical);
+
+			public int get_subject_alt_othername_oid (uint seq, void* ret, ref size_t ret_size);
+
+			public int get_ca_status (out bool critical);
+
+			public int get_basic_constraints (out bool critical, out int ca, out int pathlen);
+
+			public int get_key_usage (out KeyUsage key_usage, out bool critical);
+			public int set_key_usage (KeyUsage usage);
+
+			public int get_proxy (out bool critical, out int pathlen, [CCode (array_length = "false")] out char[] policyLanguage, out char[] policy);
+
+			public bool dn_oid_known (string oid);
+
+			public int get_extension_oid (int index, void* oid, ref size_t oid_size);
+			public int get_extension_by_oid (string oid, int index, void* buf, ref size_t buf_size, out bool critical);
+
+			public int get_extension_info (int index, void* oid, ref size_t oid_size, out bool critical);
+			public int get_extension_data (int index, void* data, ref size_t data_size);
+
+			public int set_extension_by_oid (string oid, void* buf, size_t buf_size, bool critical);
+			public int set_dn_by_oid (string oid, uint raw_flag, void* name, uint name_size);
+			public int set_issuer_dn_by_oid (string oid, uint raw_flag, void* name, uint name_size);
+			public int set_version (uint version);
+			public int set_key (PrivateKey key);
+			public int set_ca_status (uint ca);
+			public int set_basic_constraints (uint ca, int pathLenConstraint);
+			public int set_subject_alternative_name (SubjectAltName type, string data_string);
+
+			public int sign (Certificate issuer, PrivateKey issuer_key);
+			public int sign2 (Certificate issuer, PrivateKey issuer_key, DigestAlgorithm alg, uint flags);
+
+			public int set_activation_time (time_t act_time);
+			public int set_expiration_time (time_t exp_time);
+			public int set_serial (void* serial, size_t serial_size);
+
+			public int set_subject_key_id (void* id, size_t id_size);
+			public int set_proxy_dn (Certificate eecrt, uint raw_flag, void* name, uint name_size);
+			public int set_proxy (int pathLenConstraint, string policyLanguage, [CCode (array_length_type = "size_t")] uint8[] policy);
+
+			public int print (CertificatePrintFormats format, out Datum output);
+
+			public int get_raw_issuer_dn (out unowned Datum start);
+			public int get_raw_dn (out unowned Datum start);
+
+			public int verify_data (uint flags, ref Datum data, ref Datum signature);
+
+			private int set_crq (CertificateRequest crq);
+
+			// verification
+
+			public int check_issuer (Certificate issuer);
+			public static int list_verify (Certificate[] cert_list, Certificate[] CA_list, Certificate[] CLR_list, CertificateVerifyFlags flags, out CertificateStatus verify);
+			public int verify (Certificate[] CA_list, CertificateVerifyFlags flags, out CertificateStatus verify);
+			public int check_revocation (CRL[] crl_list);
+			public int get_fingerprint (DigestAlgorithm algo, void* buf, ref size_t buf_size);
+			public int get_key_purpose_oid (int index, void* oid, ref size_t oid_size, out bool critical);
+			public int set_key_purpose_oid (string oid, bool critical);
+		}
+
+		[Compact]
+		[CCode (cname = "struct gnutls_x509_crl_int", free_function = "gnutls_x509_crl_deinit", cprefix = "gnutls_x509_crl_")]
+		public class CRL
+		{
+			private static int init (CRL* crl);
+
+			public static CRL create ()
+			{
+				CRL result = null;
+				var ret = init (&result);
+				if (ret != 0)
+					GLib.error ("%s", ((ErrorCode)ret).to_string ());
+				return result;
+			}
+
+			public int import (ref Datum data, CertificateFormat format);
+			public int export (CertificateFormat format, void* output, ref size_t output_size);
+
+			public int get_issuer_dn (char* buf, ref size_t buf_size);
+			public int get_issuer_dn_by_oid (string oid, int index, uint raw_flag, void* buf, ref size_t buf_size);
+
+			public int get_dn_oid (int index, void* oid, ref size_t oid_size);
+
+			public int get_signature_algorithm ();
+			public int get_signature (char* sig, ref size_t sig_size);
+			public int get_version ();
+
+			public time_t get_this_update ();
+			public time_t get_next_update ();
+
+			public int get_crt_count ();
+			public int get_crt_serial (int index, uchar* serial, ref size_t serial_size, out time_t t);
+
+			// aliases for previous two
+			public int get_certificate_count ();
+			public int get_certificate (int index, uchar* serial, ref size_t serial_size, out time_t t);
+
+			public int check_issuer (Certificate issuer);
+
+			public int verify (Certificate[] ca_list, CertificateVerifyFlags flags, out CertificateStatus verify);
+
+			// CRL writing
+
+			public int set_version (uint version);
+			public int sign (Certificate issuer, PrivateKey issuer_key);
+			public int sign2 (Certificate issuer, PrivateKey issuer_key, DigestAlgorithm algo, uint flags);
+
+			public int set_this_update (time_t act_time);
+			public int set_next_update (time_t exp_time);
+
+			public int set_crt_serial (void* serial, size_t serial_size, time_t revocation_time);
+			public int set_crt (Certificate crt, time_t revocation_time);
+
+			public int print (CertificatePrintFormats format, out Datum output);
+		}
+
+		[Compact]
+		[CCode (cname = "struct gnutls_pkcs7_int", cprefix = "gnutls_pkcs7_", free_function = "gnutls_pkcs7_deinit")]
+		public class PKCS7
+		{
+			private static int init (PKCS7* pkcs7);
+			public static PKCS7 create ()
+			{
+				PKCS7 result = null;
+				var ret = init (&result);
+				if (ret != 0)
+					GLib.error ("%s", ((ErrorCode)ret).to_string ());
+				return result;
+			}
+
+			public int import (ref Datum data, CertificateFormat format);
+			public int export (CertificateFormat format, void* output, ref size_t output_size);
+
+			public int get_crt_count ();
+			public int get_crt_raw (int index, void* certificate, ref size_t certificate_size);
+			public int set_crt_raw (ref Datum crt);
+			public int set_crt (Certificate crt);
+			public int delete_crt (int index);
+
+			public int get_crl_count ();
+			public int get_crl_raw (int index, void* crl, ref size_t crl_size);
+			public int set_crl_raw (ref Datum crt);
+			public int set_crl (CRL crl);
+			public int delete_crl (int index);
+		}
+
+		// Flags for the gnutls_x509_privkey_export_pkcs8() function.
+		[Flags]
+		[CCode (cname = "gnutls_pkcs_encrypt_flags_t", cprefix = "GNUTLS_PKCS_")]
+		public enum PKCSEncryptFlags {
+			PLAIN,
+			USE_PKCS12_3DES,
+			USE_PKCS12_ARCFOUR,
+			USE_PKCS12_RC2_40,
+			USE_PBES2_3DES
+		}
+
+		[Compact]
+		[CCode (cname = "struct gnutls_x509_privkey_int", cprefix = "gnutls_x509_privkey_", free_function = "gnutls_x509_privkey_deinit")]
+		public class PrivateKey
+		{
+			private static int init (PrivateKey* key);
+			public static PrivateKey create ()
+			{
+				PrivateKey result = null;
+				var ret = init (&result);
+				if (ret != 0)
+					GLib.error ("%s", ((ErrorCode)ret).to_string ());
+				return result;
+			}
+
+			public int cpy (PrivateKey source);
+
+			public int import (ref Datum data, CertificateFormat format);
+			public int import_pkcs8 (ref Datum data, CertificateFormat format, string? password, PKCSEncryptFlags flags);
+			public int import_rsa_raw (ref Datum m, ref Datum e, ref Datum d, ref Datum p, ref Datum q, ref Datum u);
+			public int import_dsa_raw (ref Datum p, ref Datum q, ref Datum g, ref Datum y, ref Datum x);
+
+			public int export (CertificateFormat format, void* output, ref size_t output_size);
+			public int export_pkcs8 (CertificateFormat format, string password, PKCSEncryptFlags flags, void* output, ref size_t output_size);
+			public int export_rsa_raw (out Datum m, out Datum e, out Datum d, out Datum p, out Datum q, out Datum u);
+			public int export_dsa_raw (out Datum p, out Datum q, out Datum g, out Datum y, out Datum x);
+
+			public int fix ();
+			public int generate (PKAlgorithm algo, uint bits, uint flags = 0);
+
+			public int get_pk_algorithm ();
+			public int get_key_id (uint flags, uchar* output, ref size_t output_size);
+
+			// Signing stuff
+
+			public int sign_data (DigestAlgorithm digest, uint flags, ref Datum data, void* signature, ref size_t signature_size);
+			public int verify_data (uint flags, ref Datum data, ref Datum signature);
+			public int sign_hash (ref Datum hash, out Datum signature);
+		}
+
+		[Compact]
+		[CCode (cname = "struct gnutls_x509_crq_int", cprefix = "gnutls_x509_crq_", free_function = "gnutls_x509_crq_deinit")]
+		public class CertificateRequest
+		{
+			private static int init (CertificateRequest* request);
+			public static CertificateRequest create ()
+			{
+				CertificateRequest result = null;
+				var ret = init (&result);
+				if (ret != 0)
+					GLib.error ("%s", ((ErrorCode)ret).to_string ());
+				return result;
+			}
+
+			public int import (ref Datum data, CertificateFormat format);
+			public int export (CertificateFormat format, void* output, ref size_t output_size);
+
+			public int get_pk_algorithm (out uint bits);
+			public int get_dn (char* buf, ref size_t buf_size);
+			public int get_dn_oid (int index, void* oid, ref size_t oid_size);
+			public int get_dn_by_oid (string oid, int index, uint raw_flag, void* buf, ref size_t buf_size);
+			public int set_dn_by_oid (string oid, uint raw_flag, void* name, uint name_size);
+
+			public int set_version (uint version);
+
+			public int set_key (PrivateKey key);
+
+			public int sign (PrivateKey key);
+			public int sign2 (PrivateKey key, DigestAlgorithm algo, uint flags);
+
+			public int set_challenge_password (string pass);
+			public int get_challenge_password (char* pass, ref size_t pass_size);
+
+			public int set_attribute_by_oid (string oid, void* buf, size_t buf_size);
+			public int get_attribute_by_oid (string oid, int index, void* buf, ref size_t buf_size);
+		}
+
+		[Compact]
+		[CCode (cheader_filename = "gnutls/pkcs12.h", cname = "struct gnutls_pkcs12_int", cprefix = "gnutls_pkcs12_", free_function = "gnutls_pkcs12_deinit")]
+		public class PKCS12
+		{
+			private static int init (PKCS12* request);
+			public static PKCS12 create ()
+			{
+				PKCS12 result = null;
+				var ret = init (&result);
+				if (ret != 0)
+					GLib.error ("%s", ((ErrorCode)ret).to_string ());
+				return result;
+			}
+
+			public int import (ref Datum data, CertificateFormat format, uint flags);
+			public int export (CertificateFormat format, void* output, ref size_t output_size);
+
+			public int get_bag (int index, PKCS12Bag bag);
+			public int set_bag (PKCS12Bag bag);
+
+			public int generate_mac (string pass);
+			public int verify_mac (string pass);
+		}
+
+		[CCode (cheader_filename = "gnutls/pkcs12.h", cname = "gnutls_pkcs12_bag_type_t", cprefix = "GNUTLS_BAG_")]
+		public enum PKCS12BagType {
+			EMPTY,
+			PKCS8_ENCRYPTED_KEY,
+			PKCS8_KEY,
+			CERTIFICATE,
+			CRL,
+			ENCRYPTED,
+			UNKNOWN
+		}
+
+		[Compact]
+		[CCode (cheader_filename = "gnutls/pkcs12.h", cname = "struct gnutls_pkcs12_bag_int", cprefix = "gnutls_pkcs12_bag_", free_function = "gnutls_pkcs12_bag_deinit")]
+		public class PKCS12Bag {
+			private static int init (PKCS12Bag* request);
+			public static PKCS12Bag create ()
+			{
+				PKCS12Bag result = null;
+				var ret = init (&result);
+				if (ret != 0)
+					GLib.error ("%s", ((ErrorCode)ret).to_string ());
+				return result;
+			}
+
+			public int decrypt (string pass);
+			public int encrypt (string pass, PKCSEncryptFlags flags);
+
+			public PKCS12BagType get_type (int index);
+			public int get_data (int index, out Datum data);
+			public int set_data (PKCS12BagType type, ref Datum data);
+			public int set_crl (CRL crl);
+			public int set_crt (Certificate crt);
+
+			public int get_count ();
+
+			public int get_key_id (int index, out Datum id);
+			public int set_key_id (int index, ref Datum id);
+
+			public int get_friendly_name (int index, out unowned string name);
+			public int set_friendly_name (int index, string name);
+		}
+	}
+
+	[CCode (cheader_filename = "gnutls/openpgp.h")]
+	namespace OpenPGP
+	{
+		/**
+		* gnutls_openpgp_recv_key_func - Callback prototype to get OpenPGP keys
+		* @session: a TLS session
+		* @keyfpr: key fingerprint
+		* @keyfpr_length: length of key fingerprint
+		* @key: output key.
+		*
+		* A callback of this type is used to retrieve OpenPGP keys.  Only
+		* useful on the server, and will only be used if the peer send a key
+		* fingerprint instead of a full key.  See also
+		* gnutls_openpgp_set_recv_key_function().
+		*
+		*/
+		public static delegate int RecvKeyFunc (Session session, uint8[] keyfpr, out Datum key);
+
+		[CCode (cname = "gnutls_openpgp_crt_fmt_t", cprefix = "GNUTLS_OPENPGP_FMT_")]
+		public enum CertificateFormat {
+			RAW,
+			BASE64
+		}
+
+		[Compact]
+		[CCode (cname = "struct gnutls_openpgp_crt_int", cprefix = "gnutls_openpgp_crt_", free_function = "gnutls_openpgp_crt_deinit")]
+		public class Certificate
+		{
+			private static int init (Certificate* crt);
+			public static Certificate create ()
+			{
+				Certificate result = null;
+				var ret = init (&result);
+				if (ret != 0)
+					GLib.error ("%s", ((ErrorCode)ret).to_string ());
+				return result;
+			}
+
+			public int import (ref Datum data, CertificateFormat format);
+			public int export (CertificateFormat format, void* output, ref size_t output_size);
+
+			public int print (CertificatePrintFormats format, out Datum output);
+
+			public int get_key_usage (out KeyUsage key_usage);
+			public int get_fingerprint (void* fpr, ref size_t fpr_size);
+			public int get_subkey_fingerprint (uint index, void* fpr, ref size_t fpr_size);
+
+			public int get_name (int index, char* buf, ref size_t buf_size);
+
+			public PKAlgorithm get_pk_algorithm (out uint bits);
+
+			public int get_version ();
+
+			public time_t get_creation_time ();
+			public time_t get_expiration_time ();
+
+			// keyid is 8 bytes
+			public int get_key_id (uchar* keyid);
+
+			public int check_hostname (string hostname);
+
+			public int get_revoked_status ();
+
+			public int get_subkey_count ();
+			public int get_subkey_idx (/*const*/ uchar* keyid);
+			public int get_subkey_revoked_status (uint idx);
+
+			public PKAlgorithm get_subkey_pk_algorithm (uint idx, out uint bits);
+
+			public time_t get_subkey_creation_time (uint idx);
+			public time_t get_subkey_expiration_time (uint idx);
+
+			public int get_subkey_id (uint idx, uchar* keyid);
+			public int get_subkey_usage (uint idx, out KeyUsage key_usage);
+
+			public int get_pk_dsa_raw (out Datum p, out Datum q, out Datum g, out Datum y);
+			public int get_pk_rsa_raw (out Datum m, out Datum e);
+
+			public int get_subkey_pk_dsa_raw (uint index, out Datum p, out Datum q, out Datum g, out Datum y);
+			public int get_subkey_pk_rsa_raw (uint index, out Datum m, out Datum e);
+
+			public int get_preferred_key_id (uchar* keyid);
+			public int set_preferred_key_id (/* const */ uchar* keyid);
+
+			public int verify_ring (Keyring keyring, uint flags, out CertificateStatus verify);
+			public int verify_self (uint flags, out CertificateStatus verify);
+		}
+
+		[Compact]
+		[CCode (cname = "struct gnutls_openpgp_privkey_int", cprefix = "gnutls_openpgp_privkey_", free_function = "gnutls_openpgp_privkey_deinit")]
+		public class PrivateKey
+		{
+			private static int init (PrivateKey* key);
+			public static PrivateKey create ()
+			{
+				PrivateKey result = null;
+				var ret = init (&result);
+				if (ret != 0)
+					GLib.error ("%s", ((ErrorCode)ret).to_string ());
+				return result;
+			}
+
+			public PKAlgorithm get_pk_algorithm (out uint bits);
+
+			public int import (ref Datum data, CertificateFormat format, string pass, uint flags);
+			public int export (CertificateFormat format, string password, uint flags, void* output, ref size_t output_size);
+
+			public int sign_hash (ref Datum hash, out Datum signature);
+			public int get_fingerprint (void* fpr, ref size_t fpr_size);
+			public int get_subkey_fingerprint (uint idx, void* fpr, ref size_t fpr_size);
+
+			public int get_key_id (uchar* keyid);
+			public int get_subkey_count ();
+			public int get_subkey_idx (/*const*/ uchar* keyid);
+
+			public int get_subkey_revoked_status (uint index);
+			public int get_revoked_status ();
+
+			public PKAlgorithm get_subkey_pk_algorithm (uint idx, out uint bits);
+
+			public time_t get_subkey_expiration_time (uint idx);
+			public time_t get_subkey_creation_time (uint idx);
+
+			public int get_subkey_id (uint idx, uchar* keyid);
+
+			public int export_subkey_dsa_raw (uint idx, out Datum p, out Datum q, out Datum g, out Datum y, out Datum x);
+			public int export_subkey_rsa_raw (uint idx, out Datum m, out Datum e, out Datum d, out Datum p, out Datum q, out Datum u);
+
+			public int export_dsa_raw (out Datum p, out Datum q, out Datum g, out Datum y, out Datum x);
+			public int export_rsa_raw (out Datum m, out Datum e, out Datum d, out Datum p, out Datum q, out Datum u);
+
+			public int set_preferred_key_id (/*const*/ uchar* keyid);
+			public int get_preferred_key_id (uchar* keyid);
+
+			public int get_auth_subkey (uchar* keyid, uint flag);
+		}
+
+		[Compact]
+		[CCode (cname = "struct gnutls_openpgp_keyring_int", cprefix = "gnutls_openpgp_keyring_", free_function = "gnutls_openpgp_keyring_deinit")]
+		public class Keyring
+		{
+			private static int init (Keyring* keyring);
+			public static Keyring create ()
+			{
+				Keyring result = null;
+				var ret = init (&result);
+				if (ret != 0)
+					GLib.error ("%s", ((ErrorCode)ret).to_string ());
+				return result;
+			}
+
+			public int import (ref Datum data, CertificateFormat format);
+			public int check_id (/*const*/ uchar* keyid, uint flags);
+
+			public int get_crt_count ();
+			public int get_crt (uint index, out Certificate cert);
+		}
+	}
+
+
+
+	[CCode (cname = "gnutls_certificate_client_retrieve_function *")]
+	public static delegate int ClientCertificateRetrieveFunction (Session session, Datum[] req_ca_rdn, PKAlgorithm[] pk_algos, out RetrStruct st);
+	[CCode (cname = "gnutls_certificate_server_retrieve_function *")]
+	public static delegate int ServerCertificateRetrieveFunction (Session session, out RetrStruct st);
+
+	[Compact]
+	[CCode (cname = "struct gnutls_certificate_credentials_st",
+	        free_function = "gnutls_certificate_free_credentials",
+	        cprefix = "gnutls_certificate_")]
+	public class CertificateCredentials
+	{
+		[CCode (cname = "gnutls_certificate_allocate_credentials")]
+		private static int allocate (CertificateCredentials* credentials);
+		public static CertificateCredentials create ()
+		{
+			CertificateCredentials result = null;
+			var ret = allocate (&result);
+			if (ret != 0)
+				GLib.error ("%s", ((ErrorCode)ret).to_string ());
+			return result;
+		}
+
+		public void free_keys ();
+		public void free_cas  ();
+		public void free_ca_names ();
+		public void free_crls ();
+
+		public void set_dh_params (DHParams dh_params);
+		public void set_rsa_export_params (RSAParams rsa_params);
+		public void set_verify_flags (X509.CertificateVerifyFlags flags);
+		public void set_verify_limits (uint max_bits, uint max_depth);
+
+		public int set_x509_trust (X509.Certificate[] ca_list);
+		public int set_x509_trust_file (string cafile, X509.CertificateFormat type);
+		public int set_x509_trust_mem (/* const */ ref Datum cadata, X509.CertificateFormat type);
+
+		public int set_x509_crl (X509.CRL[] crl_list);
+		public int set_x509_crl_file (string crlfile, X509.CertificateFormat type);
+		public int set_x509_crl_mem (/* const */ ref Datum crldata, X509.CertificateFormat type);
+
+		public int set_x509_key (X509.Certificate[] cert_list, X509.PrivateKey key);
+		public int set_x509_key_file (string certfile, string keyfile, X509.CertificateFormat type);
+		public int set_x509_key_mem (/* const */ ref Datum certdata, /* const */ ref Datum keydata, X509.CertificateFormat type);
+
+		public int set_x509_simple_pkcs12_file (string pkcs12file, X509.CertificateFormat type, string? password = null);
+
+		public void get_x509_cas ([CCode (array_length_type = "unsigned int")] out unowned X509.Certificate[] x509_ca_list);
+		public void get_x509_crls ([CCode (array_length_type = "unsigned int")] out unowned X509.CRL[] x509_crl_list);
+
+
+		[CCode (cname = "gnutls_certificate_client_set_retrieve_function")]
+		public void set_client_certificate_retrieve_function (ClientCertificateRetrieveFunction func);
+		[CCode (cname = "gnutls_certificate_server_set_retrieve_function")]
+		public void set_server_certificate_retrieve_function (ServerCertificateRetrieveFunction func);
+
+		[CCode (cname = "gnutls_certificate_set_params_function")]
+		public void set_params_function (ParamsFunction func);
+
+		// OpenPGP stuff
+
+		public int set_openpgp_key (OpenPGP.Certificate key, OpenPGP.PrivateKey pkey);
+
+		public int set_openpgp_key_file (string certfile, string keyfile, OpenPGP.CertificateFormat format);
+		public int set_openpgp_key_mem (ref Datum cert, ref Datum key, OpenPGP.CertificateFormat format);
+		public int set_openpgp_key_file2 (string certfile, string keyfile, string keyid, OpenPGP.CertificateFormat format);
+		public int set_openpgp_key_mem2 (ref Datum cert, ref Datum key, string keyid, OpenPGP.CertificateFormat format);
+
+		public int set_openpgp_keyring_mem (uchar* data, size_t data_size, OpenPGP.CertificateFormat format);
+		public int set_openpgp_keyring_file (string file, OpenPGP.CertificateFormat format);
+
+		public void get_openpgp_keyring (out unowned OpenPGP.Keyring keyring);
+	}
+
+	[CCode (cname = "gnutls_malloc")]
+	public void* malloc (size_t size);
+	[CCode (cname = "gnutls_secure_malloc")]
+	public void* secure_malloc (size_t size);
+	[CCode (cname = "gnutls_realloc")]
+	public void* realloc (void* ptr, size_t new_size);
+	[CCode (cname = "gnutls_calloc")]
+	public void* calloc (size_t count, size_t block_size);
+	[CCode (cname = "gnutls_free")]
+	public void free (void* ptr);
+
+	[CCode (cname = "gnutls_free")]
+	public void free_data ([CCode (array_length = false)] owned uint[] data);
+
+	[CCode (cname = "gnutls_strdup")]
+	public string strdup (string str);
+
+	[CCode (cname = "gnutls_alloc_function")]
+	public static delegate void* AllocFunction (size_t size);
+	[CCode (cname = "gnutls_calloc_function")]
+	public static delegate void* CallocFunction (size_t count, size_t block_size);
+	[CCode (cname = "gnutls_is_secure_function")]
+	public static delegate int IsSecureFunction (void* ptr);
+	[CCode (cname = "gnutls_free_function")]
+	public static delegate void FreeFunction (void* ptr);
+	[CCode (cname = "gnutls_realloc_function")]
+	public static delegate void* ReallocFunction (void* ptr, size_t new_size);
+
+	public int global_init ();
+	public void global_deinit ();
+
+	[CCode (cname = "gnutls_global_set_mem_functions")]
+	public void set_mem_functions (AllocFunction alloc_func, AllocFunction secure_alloc_func,
+	                               IsSecureFunction is_secure_func, ReallocFunction realloc_func,
+	                               FreeFunction free_func);
+
+	[CCode (cname = "gnutls_log_func")]
+	public static delegate void LogFunc (int level, string msg);
+	[CCode (cname = "gnutls_global_set_log_function")]
+	public void set_log_function (LogFunc func);
+	[CCode (cname = "gnutls_global_set_log_level")]
+	public void set_log_level (int level);
+
+	[CCode (cname = "gnutls_transport_set_global_errno")]
+	public void set_global_errno (int err);
+
+// SRP stuff
+
+	[CCode (cname = "gnutls_srp_server_credentials_function *")]
+	public static delegate int SRPServerCredentialsFunction (Session session, string username,
+	                                                         out Datum salt, out Datum verifier,
+	                                                         out Datum generator, out Datum prime);
+
+	[Compact]
+	[CCode (cname = "struct gnutls_srp_server_credentials_st", free_function = "gnutls_srp_free_server_credentials")]
+	public class SRPServerCredentials
+	{
+		[CCode (cname = "gnutls_srp_allocate_server_credentials")]
+		private static int allocate (SRPServerCredentials* sc);
+		public static SRPServerCredentials create ()
+		{
+			SRPServerCredentials result = null;
+			var ret = allocate (&result);
+			if (ret != 0)
+				GLib.error ("%s", ((ErrorCode)ret).to_string ());
+			return result;
+		}
+
+		[CCode (cname = "gnutls_srp_set_server_credentials_file")]
+		public int set_credentials_file (string password_file, string password_conf_file);
+
+		[CCode (cname = "gnutls_srp_server_get_username")]
+		public string get_username ();
+
+		[CCode (cname = "gnutls_srp_set_server_credentials_function")]
+		public void set_credentials_function (SRPServerCredentialsFunction func);
+	}
+
+	[CCode (cname = "gnutls_srp_client_credentials_function *")]
+	public static delegate int SRPClientCredentialsFunction (Session session, out string username, out string password);
+
+	[Compact]
+	[CCode (cname = "struct gnutls_srp_client_credentials_st", free_function = "gnutls_srp_free_client_credentials")]
+	public class SRPClientCredentials
+	{
+		[CCode (cname = "gnutls_srp_allocate_client_credentials")]
+		private static int allocate (SRPClientCredentials* sc);
+		public static SRPClientCredentials create ()
+		{
+			SRPClientCredentials result = null;
+			var ret = allocate (&result);
+			if (ret != 0)
+				GLib.error ("%s", ((ErrorCode)ret).to_string ());
+			return result;
+		}
+
+		[CCode (cname = "gnutls_srp_set_client_credentials")]
+		public int set_credentials (string username, string password);
+
+		[CCode (cname = "gnutls_srp_set_client_credentials_function")]
+		public void set_credentials_function (SRPClientCredentialsFunction func);
+	}
+
+	//  extern int gnutls_srp_verifier (const char *username,
+	//			  const char *password,
+	//			  const gnutls_datum_t * salt,
+	//			  const gnutls_datum_t * generator,
+	//			  const gnutls_datum_t * prime,
+	//			  gnutls_datum_t * res);
+
+	public int srp_verifier (string username, string password, /* const */ ref Datum salt, /* const */ ref Datum generator, /* const */ ref Datum prime, out Datum result);
+
+	// The static parameters defined in draft-ietf-tls-srp-05
+	// Those should be used as input to gnutls_srp_verifier().
+
+	public const Datum srp_2048_group_prime;
+	public const Datum srp_2048_group_generator;
+
+	public const Datum srp_1536_group_prime;
+	public const Datum srp_1536_group_generator;
+
+	public const Datum srp_1024_group_prime;
+	public const Datum srp_1024_group_generator;
+
+	public int srp_base64_encode (/* const */ ref Datum data, [CCode (array_length = "false")] char[] result, ref size_t result_size);
+	public int srp_base64_encode_alloc (/* const */ ref Datum data, out Datum result);
+
+	public int srp_base64_decode (/* const */ ref Datum b64_data, [CCode (array_length = false)] uint8[] result, ref size_t result_size);
+	public int srp_base64_decode_alloc (/* const */ ref Datum b64_data, out Datum result);
+
+
+
+
+
+
+// PSK stuff
+
+	[CCode (cname = "gnutls_psk_key_flags", cprefix = "GNUTLS_PSK_KEY_")]
+	public enum PSKKeyFlags
+	{
+		RAW,
+		HEX
+	}
+
+	[CCode (cname = "gnutls_psk_server_credentials_function *")]
+	public static delegate int PSKServerCredentialsFunction (Session session, string username, /* const */ ref Datum key);
+
+	[Compact]
+	[CCode (cname = "struct gnutls_psk_server_credentials_st", free_function = "gnutls_psk_free_server_credentials")]
+	public class PSKServerCredentials
+	{
+		[CCode (cname = "gnutls_psk_allocate_server_credentials")]
+		private static int allocate (PSKServerCredentials* sc);
+		public static PSKServerCredentials create ()
+		{
+			PSKServerCredentials result = null;
+			var ret = allocate (&result);
+			if (ret != 0)
+				GLib.error ("%s", ((ErrorCode)ret).to_string ());
+			return result;
+		}
+
+		[CCode (cname = "gnutls_psk_set_server_credentials_file")]
+		public int set_credentials_file (string password_file);
+
+		[CCode (cname = "gnutls_psk_set_server_credentials_hint")]
+		public int set_credentials_hint (string hint);
+
+		[CCode (cname = "gnutls_psk_set_server_credentials_function")]
+		public void set_credentials_function (PSKServerCredentialsFunction func);
+
+		[CCode (cname = "gnutls_psk_set_server_dh_params")]
+		public void set_dh_params (DHParams dh_params);
+
+		[CCode (cname = "gnutls_psk_set_server_params_function")] // also gnutls_psk_set_params_function
+		public void set_params_function (ParamsFunction func);
+	}
+
+	[CCode (cname = "gnutls_psk_client_credentials_function *")]
+	public static delegate int PSKClientCredentialsFunction (Session session, out string username, out Datum key);
+
+	[Compact]
+	[CCode (cname = "struct gnutls_psk_client_credentials_st", free_function = "gnutls_psk_free_client_credentials")]
+	public class PSKClientCredentials
+	{
+		[CCode (cname = "gnutls_psk_allocate_client_credentials")]
+		private static int allocate (PSKClientCredentials* sc);
+		public static PSKClientCredentials create ()
+		{
+			PSKClientCredentials result = null;
+			var ret = allocate (&result);
+			if (ret != 0)
+				GLib.error ("%s", ((ErrorCode)ret).to_string ());
+			return result;
+		}
+
+		[CCode (cname = "gnutls_psk_set_client_credentials")]
+		public int set_credentials (string username, /* const */ ref Datum key, PSKKeyFlags format);
+
+		[CCode (cname = "gnutls_psk_set_client_credentials_function")]
+		public void set_credentials_function (PSKClientCredentialsFunction func);
+	}
+
+	public int hex_encode (/* const */ ref Datum data, [CCode (array_length = "false")] char[] result, ref size_t result_size);
+	public int hex_decode (/* const */ ref Datum hex_data, [CCode (array_length = "false")] char[] result, ref size_t result_size);
+
+	public int psk_netconf_derive_key (string password, string psk_identity, string psk_identity_hint, out Datum output_key);
+
+////
+
+	[SimpleType]
+	[CCode (cname = "gnutls_retr_st")]
+	public struct RetrStruct
+	{
+		public CertificateType type;
+		[CCode (cname = "cert.x509", array_length_name = "ncerts", array_length_type = "unsigned int")]
+		public X509.Certificate[] cert_x509;
+		[CCode (cname = "cert.pgp")]
+		public OpenPGP.Certificate cert_pgp;
+		[CCode (cname = "key.x509")]
+		public X509.PrivateKey key_x509;
+		[CCode (cname = "key.pgp")]
+		public OpenPGP.PrivateKey key_pgp;
+		public uint deinit_all;
+	}
+
+	public int pem_base64_encode (string msg, /* const */ ref Datum data, void* result, ref size_t result_size);
+	public int pem_base64_decode (string header, /* const */ ref Datum b64_data, void* result, ref size_t result_size);
+
+	public int pem_base64_encode_alloc (string msg, /* const */ ref Datum data, out Datum result);
+	public int pem_base64_decode_alloc (string header, /* const */ ref Datum b64_data, out Datum result);
+
+	public int hex2bin (string hex_data, size_t hex_size, void* bin_data, ref size_t bin_size);
+
+	// returns cipher suite name or null if index is out of bounds
+	public unowned string? cipher_suite_info (size_t index, [CCode (array_length = "false")] char[] cs_id, out KXAlgorithm kx,
+	                                         out CipherAlgorithm cipher, out MacAlgorithm mac,
+	                                         out Protocol version);
+
+	public unowned string? cipher_suite_get_name (KXAlgorithm kx, CipherAlgorithm cipher, MacAlgorithm mac);
+
+	public int prf (Session session, size_t label_size, string label, bool server_random_first,
+	                size_t extra_size, void* extra, size_t output_size, void* output);
+
+	public int prf_raw (Session session, size_t label_size, string label,
+	                    size_t seed_size, void* seed, size_t output_size, void* output);
+
+	// Gnutls error codes. The mapping to a TLS alert is also shown in comments.
+	[CCode (cname = "int", cprefix = "GNUTLS_E_", lower_case_cprefix = "gnutls_error_")]
+	public enum ErrorCode {
+
+		SUCCESS,
+		UNKNOWN_COMPRESSION_ALGORITHM,
+		UNKNOWN_CIPHER_TYPE,
+		LARGE_PACKET,
+		UNSUPPORTED_VERSION_PACKET,	// GNUTLS_A_PROTOCOL_VERSION
+		UNEXPECTED_PACKET_LENGTH,	// GNUTLS_A_RECORD_OVERFLOW
+		INVALID_SESSION,
+		FATAL_ALERT_RECEIVED,
+		UNEXPECTED_PACKET,	// GNUTLS_A_UNEXPECTED_MESSAGE
+		WARNING_ALERT_RECEIVED,
+		ERROR_IN_FINISHED_PACKET,
+		UNEXPECTED_HANDSHAKE_PACKET,
+		UNKNOWN_CIPHER_SUITE,	// GNUTLS_A_HANDSHAKE_FAILURE
+		UNWANTED_ALGORITHM,
+		MPI_SCAN_FAILED,
+		DECRYPTION_FAILED,	// GNUTLS_A_DECRYPTION_FAILED, GNUTLS_A_BAD_RECORD_MAC
+		MEMORY_ERROR,
+		DECOMPRESSION_FAILED,  // GNUTLS_A_DECOMPRESSION_FAILURE
+		COMPRESSION_FAILED,
+		AGAIN,
+		EXPIRED,
+		DB_ERROR,
+		SRP_PWD_ERROR,
+		INSUFFICIENT_CREDENTIALS,
+
+		HASH_FAILED,
+		BASE64_DECODING_ERROR,
+
+		MPI_PRINT_FAILED,
+		REHANDSHAKE,     // GNUTLS_A_NO_RENEGOTIATION
+		GOT_APPLICATION_DATA,
+		RECORD_LIMIT_REACHED,
+		ENCRYPTION_FAILED,
+
+		PK_ENCRYPTION_FAILED,
+		PK_DECRYPTION_FAILED,
+		PK_SIGN_FAILED,
+		X509_UNSUPPORTED_CRITICAL_EXTENSION,
+		KEY_USAGE_VIOLATION,
+		NO_CERTIFICATE_FOUND,	// GNUTLS_A_BAD_CERTIFICATE
+		INVALID_REQUEST,
+		SHORT_MEMORY_BUFFER,
+		INTERRUPTED,
+		PUSH_ERROR,
+		PULL_ERROR,
+		RECEIVED_ILLEGAL_PARAMETER,    // GNUTLS_A_ILLEGAL_PARAMETER
+		REQUESTED_DATA_NOT_AVAILABLE,
+		PKCS1_WRONG_PAD,
+		RECEIVED_ILLEGAL_EXTENSION,
+		INTERNAL_ERROR,
+		DH_PRIME_UNACCEPTABLE,
+		FILE_ERROR,
+		TOO_MANY_EMPTY_PACKETS,
+		UNKNOWN_PK_ALGORITHM,
+
+		// returned if libextra functionality was requested but
+		// gnutls_global_init_extra() was not called.
+
+		INIT_LIBEXTRA,
+		LIBRARY_VERSION_MISMATCH,
+
+		// returned if you need to generate temporary RSA
+		// parameters. These are needed for export cipher suites.
+
+		NO_TEMPORARY_RSA_PARAMS,
+
+		LZO_INIT_FAILED,
+		NO_COMPRESSION_ALGORITHMS,
+		NO_CIPHER_SUITES,
+
+		OPENPGP_GETKEY_FAILED,
+		PK_SIG_VERIFY_FAILED,
+
+		ILLEGAL_SRP_USERNAME,
+		SRP_PWD_PARSING_ERROR,
+		NO_TEMPORARY_DH_PARAMS,
+
+		// For certificate and key stuff
+
+		ASN1_ELEMENT_NOT_FOUND,
+		ASN1_IDENTIFIER_NOT_FOUND,
+		ASN1_DER_ERROR,
+		ASN1_VALUE_NOT_FOUND,
+		ASN1_GENERIC_ERROR,
+		ASN1_VALUE_NOT_VALID,
+		ASN1_TAG_ERROR,
+		ASN1_TAG_IMPLICIT,
+		ASN1_TYPE_ANY_ERROR,
+		ASN1_SYNTAX_ERROR,
+		ASN1_DER_OVERFLOW,
+		OPENPGP_UID_REVOKED,
+		CERTIFICATE_ERROR,
+		CERTIFICATE_KEY_MISMATCH,
+		UNSUPPORTED_CERTIFICATE_TYPE,	// GNUTLS_A_UNSUPPORTED_CERTIFICATE
+		X509_UNKNOWN_SAN,
+		OPENPGP_FINGERPRINT_UNSUPPORTED,
+		X509_UNSUPPORTED_ATTRIBUTE,
+		UNKNOWN_HASH_ALGORITHM,
+		UNKNOWN_PKCS_CONTENT_TYPE,
+		UNKNOWN_PKCS_BAG_TYPE,
+		INVALID_PASSWORD,
+		MAC_VERIFY_FAILED,	// for PKCS #12 MAC
+		CONSTRAINT_ERROR,
+
+		WARNING_IA_IPHF_RECEIVED,
+		WARNING_IA_FPHF_RECEIVED,
+
+		IA_VERIFY_FAILED,
+
+		UNKNOWN_ALGORITHM,
+
+		BASE64_ENCODING_ERROR,
+		INCOMPATIBLE_CRYPTO_LIBRARY,
+		INCOMPATIBLE_LIBTASN1_LIBRARY,
+
+		OPENPGP_KEYRING_ERROR,
+		X509_UNSUPPORTED_OID,
+
+		RANDOM_FAILED,
+		BASE64_UNEXPECTED_HEADER_ERROR,
+
+		OPENPGP_SUBKEY_ERROR,
+
+		CRYPTO_ALREADY_REGISTERED,
+
+		HANDSHAKE_TOO_LARGE,
+
+		UNIMPLEMENTED_FEATURE,
+
+		APPLICATION_ERROR_MAX, // -65000
+		APPLICATION_ERROR_MIN;  // -65500
+
+		public bool is_fatal ();
+		public AlertDescription to_alert (out AlertLevel level);
+		[CCode (cname = "gnutls_perror")]
+		public void print ();
+		[CCode (cname = "gnutls_strerror")]
+		public unowned string to_string ();
+	}
+}
+
+