Helper functions for TLS server. More...

#include "tls.h"
#include "tls_cipher_suites.h"
#include "tls_server.h"
#include "tls_server_extensions.h"
#include "tls_server_misc.h"
#include "tls_common.h"
#include "tls_extensions.h"
#include "tls_certificate.h"
#include "tls_sign_generate.h"
#include "tls_sign_misc.h"
#include "tls_cache.h"
#include "tls_ffdhe.h"
#include "tls_record.h"
#include "tls_misc.h"
#include "pkix/pem_import.h"
#include "debug.h"

Macros
#define	TRACE_LEVEL TLS_TRACE_LEVEL

Functions
error_t	tlsFormatPskIdentityHint (TlsContext context, uint8_t p, size_t *written)
	Format PSK identity hint. More...

error_t	tlsFormatServerKeyParams (TlsContext context, uint8_t p, size_t *written)
	Format server's key exchange parameters. More...

error_t	tlsGenerateServerKeySignature (TlsContext context, TlsDigitalSignature signature, const uint8_t params, size_t paramsLen, size_t written)
	Sign server's key exchange parameters (TLS 1.0 and TLS 1.1) More...

error_t	tls12GenerateServerKeySignature (TlsContext context, Tls12DigitalSignature signature, const uint8_t params, size_t paramsLen, size_t written)
	Sign server's key exchange parameters (TLS 1.2) More...

error_t	tlsCheckSignalingCipherSuiteValues (TlsContext context, const TlsCipherSuites cipherSuites)
	Check whether the ClientHello includes any SCSV cipher suites. More...

error_t	tlsResumeStatefulSession (TlsContext context, const uint8_t sessionId, size_t sessionIdLen, const TlsCipherSuites cipherSuites, const TlsHelloExtensions extensions)
	Resume TLS session via session ID. More...

error_t	tlsResumeStatelessSession (TlsContext context, const uint8_t sessionId, size_t sessionIdLen, const TlsCipherSuites cipherSuites, const TlsHelloExtensions extensions)
	Resume TLS session via session ticket. More...

error_t	tlsNegotiateVersion (TlsContext context, uint16_t clientVersion, const TlsSupportedVersionList supportedVersionList)
	Version negotiation. More...

error_t	tlsNegotiateCipherSuite (TlsContext context, const HashAlgo hashAlgo, const TlsCipherSuites cipherSuites, TlsHelloExtensions extensions)
	Cipher suite negotiation. More...

error_t	tlsSelectGroup (TlsContext context, const TlsSupportedGroupList groupList)
	Select the group to be used when performing (EC)DHE key exchange. More...

error_t	tlsSelectEcdheGroup (TlsContext context, const TlsSupportedGroupList groupList)
	Select the named curve to be used when performing ECDHE key exchange. More...

error_t	tlsSelectCertificate (TlsContext context, const TlsHelloExtensions extensions)
	Certificate selection process. More...

error_t	tlsParseCompressMethods (TlsContext context, const TlsCompressMethods compressMethods)
	Parse the list of compression methods supported by the client. More...

error_t	tlsParsePskIdentity (TlsContext context, const uint8_t p, size_t length, size_t *consumed)
	Parse PSK identity. More...

error_t	tlsParseClientKeyParams (TlsContext context, const uint8_t p, size_t length, size_t *consumed)
	Parse client's key exchange parameters. More...

Detailed Description

Helper functions for TLS server.

License

SPDX-License-Identifier: GPL-2.0-or-later

This file is part of CycloneSSL Open.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program 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 General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Author: Oryx Embedded SARL (www.oryx-embedded.com)

Version: 2.4.4

Definition in file tls_server_misc.c.

Macro Definition Documentation

◆ TRACE_LEVEL

#define TRACE_LEVEL TLS_TRACE_LEVEL

Definition at line 32 of file tls_server_misc.c.

Function Documentation

◆ tls12GenerateServerKeySignature()

error_t tls12GenerateServerKeySignature	(	TlsContext *	context,
		Tls12DigitalSignature *	signature,
		const uint8_t *	params,
		size_t	paramsLen,
		size_t *	written
	)

Sign server's key exchange parameters (TLS 1.2)

Parameters

[in]	context	Pointer to the TLS context
[in]	signature	Output stream where to write the digital signature
[in]	params	Pointer to the server's key exchange parameters
[in]	paramsLen	Length of the server's key exchange parameters
[out]	written	Total number of bytes that have been written

Returns: Error code

Definition at line 532 of file tls_server_misc.c.

◆ tlsCheckSignalingCipherSuiteValues()

error_t tlsCheckSignalingCipherSuiteValues	(	TlsContext *	context,
		const TlsCipherSuites *	cipherSuites
	)

Check whether the ClientHello includes any SCSV cipher suites.

Parameters

[in]	context	Pointer to the TLS context
[in]	cipherSuites	List of cipher suites offered by the client

Returns: Error code

Definition at line 749 of file tls_server_misc.c.

◆ tlsFormatPskIdentityHint()

error_t tlsFormatPskIdentityHint	(	TlsContext *	context,
		uint8_t *	p,
		size_t *	written
	)

Format PSK identity hint.

Parameters

[in]	context	Pointer to the TLS context
[in]	p	Output stream where to write the PSK identity hint
[out]	written	Total number of bytes that have been written

Returns: Error code

Definition at line 64 of file tls_server_misc.c.

◆ tlsFormatServerKeyParams()

error_t tlsFormatServerKeyParams	(	TlsContext *	context,
		uint8_t *	p,
		size_t *	written
	)

Format server's key exchange parameters.

Parameters

[in]	context	Pointer to the TLS context
[in]	p	Output stream where to write the server's key exchange parameters
[out]	written	Total number of bytes that have been written

Returns: Error code

Definition at line 109 of file tls_server_misc.c.

◆ tlsGenerateServerKeySignature()

error_t tlsGenerateServerKeySignature	(	TlsContext *	context,
		TlsDigitalSignature *	signature,
		const uint8_t *	params,
		size_t	paramsLen,
		size_t *	written
	)

Sign server's key exchange parameters (TLS 1.0 and TLS 1.1)

Parameters

[in]	context	Pointer to the TLS context
[in]	signature	Output stream where to write the digital signature
[in]	params	Pointer to the server's key exchange parameters
[in]	paramsLen	Length of the server's key exchange parameters
[out]	written	Total number of bytes that have been written

Returns: Error code

Definition at line 325 of file tls_server_misc.c.

◆ tlsNegotiateCipherSuite()

error_t tlsNegotiateCipherSuite	(	TlsContext *	context,
		const HashAlgo *	hashAlgo,
		const TlsCipherSuites *	cipherSuites,
		TlsHelloExtensions *	extensions
	)

Cipher suite negotiation.

Parameters

[in]	context	Pointer to the TLS context
[in]	hashAlgo	Desired KDF hash algorithm
[in]	cipherSuites	List of cipher suites offered by the client
[in]	extensions	ClientHello extensions offered by the client

Returns: Error code

Definition at line 1320 of file tls_server_misc.c.

◆ tlsNegotiateVersion()

error_t tlsNegotiateVersion	(	TlsContext *	context,
		uint16_t	clientVersion,
		const TlsSupportedVersionList *	supportedVersionList
	)

Version negotiation.

Parameters

[in]	context	Pointer to the TLS context
[in]	clientVersion	Highest version number supported by the client (legacy version)
[in]	supportedVersionList	Pointer to the SupportedVersions extensions

Returns: Error code

Definition at line 1221 of file tls_server_misc.c.

◆ tlsParseClientKeyParams()

error_t tlsParseClientKeyParams	(	TlsContext *	context,
		const uint8_t *	p,
		size_t	length,
		size_t *	consumed
	)

Parse client's key exchange parameters.

Parameters

[in]	context	Pointer to the TLS context
[in]	p	Input stream where to read the client's key exchange parameters
[in]	length	Number of bytes available in the input stream
[out]	consumed	Total number of bytes that have been consumed

Returns: Error code

Definition at line 1901 of file tls_server_misc.c.

◆ tlsParseCompressMethods()

error_t tlsParseCompressMethods	(	TlsContext *	context,
		const TlsCompressMethods *	compressMethods
	)

Parse the list of compression methods supported by the client.

Parameters

[in]	context	Pointer to the TLS context
[in]	compressMethods	List of compression methods

Returns: Error code

Definition at line 1797 of file tls_server_misc.c.

◆ tlsParsePskIdentity()

error_t tlsParsePskIdentity	(	TlsContext *	context,
		const uint8_t *	p,
		size_t	length,
		size_t *	consumed
	)

Parse PSK identity.

Parameters

[in]	context	Pointer to the TLS context
[in]	p	Input stream where to read the PSK identity hint
[in]	length	Number of bytes available in the input stream
[out]	consumed	Total number of bytes that have been consumed

Returns: Error code

Definition at line 1850 of file tls_server_misc.c.

◆ tlsResumeStatefulSession()

error_t tlsResumeStatefulSession	(	TlsContext *	context,
		const uint8_t *	sessionId,
		size_t	sessionIdLen,
		const TlsCipherSuites *	cipherSuites,
		const TlsHelloExtensions *	extensions
	)

Resume TLS session via session ID.

Parameters

[in]	context	Pointer to the TLS context
[in]	sessionId	Pointer to the session ID offered by the client
[in]	sessionIdLen	Length of the session ID, in bytes
[in]	cipherSuites	List of cipher suites offered by the client
[in]	extensions	ClientHello extensions offered by the client

Returns: Error code

Definition at line 854 of file tls_server_misc.c.

◆ tlsResumeStatelessSession()

error_t tlsResumeStatelessSession	(	TlsContext *	context,
		const uint8_t *	sessionId,
		size_t	sessionIdLen,
		const TlsCipherSuites *	cipherSuites,
		const TlsHelloExtensions *	extensions
	)

Resume TLS session via session ticket.

Parameters

[in]	context	Pointer to the TLS context
[in]	sessionId	Pointer to the session ID offered by the client
[in]	sessionIdLen	Length of the session ID, in bytes
[in]	cipherSuites	List of cipher suites offered by the client
[in]	extensions	ClientHello extensions offered by the client

Returns: Error code

Definition at line 1017 of file tls_server_misc.c.

◆ tlsSelectCertificate()

error_t tlsSelectCertificate	(	TlsContext *	context,
		const TlsHelloExtensions *	extensions
	)

Certificate selection process.

Parameters

[in]	context	Pointer to the TLS context
[in]	extensions	ClientHello extensions offered by the client

Returns: Error code

Definition at line 1620 of file tls_server_misc.c.

◆ tlsSelectEcdheGroup()

error_t tlsSelectEcdheGroup	(	TlsContext *	context,
		const TlsSupportedGroupList *	groupList
	)

Select the named curve to be used when performing ECDHE key exchange.

Parameters

[in]	context	Pointer to the TLS context
[in]	groupList	List of named groups supported by the peer

Returns: Error code

Definition at line 1509 of file tls_server_misc.c.

◆ tlsSelectGroup()

error_t tlsSelectGroup	(	TlsContext *	context,
		const TlsSupportedGroupList *	groupList
	)

Select the group to be used when performing (EC)DHE key exchange.

Parameters

[in]	context	Pointer to the TLS context
[in]	groupList	List of named groups supported by the client

Returns: Error code

Definition at line 1455 of file tls_server_misc.c.

Macros

Functions

Detailed Description

License

Macro Definition Documentation

◆ TRACE_LEVEL

Function Documentation

◆ tls12GenerateServerKeySignature()

◆ tlsCheckSignalingCipherSuiteValues()

◆ tlsFormatPskIdentityHint()

◆ tlsFormatServerKeyParams()

◆ tlsGenerateServerKeySignature()

◆ tlsNegotiateCipherSuite()

◆ tlsNegotiateVersion()

◆ tlsParseClientKeyParams()

◆ tlsParseCompressMethods()

◆ tlsParsePskIdentity()

◆ tlsResumeStatefulSession()

◆ tlsResumeStatelessSession()

◆ tlsSelectCertificate()

◆ tlsSelectEcdheGroup()

◆ tlsSelectGroup()