IKEv2 algorithm negotiation. More...

#include "ike/ike.h"
#include "ike/ike_algorithms.h"
#include "ah/ah_algorithms.h"
#include "esp/esp_algorithms.h"
#include "cipher/cipher_algorithms.h"
#include "cipher_modes/cipher_modes.h"
#include "hash/hash_algorithms.h"
#include "debug.h"

Macros
#define	TRACE_LEVEL IKE_TRACE_LEVEL

Functions
error_t	ikeSelectEncAlgo (IkeSaEntry *sa, uint16_t encAlgoId, size_t encKeyLen)
	Select the relevant encryption algorithm. More...

error_t	ikeSelectAuthAlgo (IkeSaEntry *sa, uint16_t authAlgoId)
	Select the relevant MAC algorithm. More...

error_t	ikeSelectPrfAlgo (IkeSaEntry *sa, uint16_t prfAlgoId)
	Select the relevant PRF algorithm. More...

error_t	ikeAddTransform (IkeTransformType transformType, uint16_t transformId, uint16_t keyLen, IkeProposal proposal, uint8_t *lastSubstruc)
	Add the supported transforms to the proposal. More...

error_t	ikeAddSupportedTransforms (IkeContext context, IkeProposal proposal, uint8_t **lastSubstruc)
	Add the supported IKE transforms to the proposal. More...

error_t	ikeAddSupportedKeTransforms (IkeContext context, IkeProposal proposal, uint8_t **lastSubstruc)
	Add the supported key exchange transforms to the proposal. More...

error_t	ikeAddSupportedEncTransforms (IkeContext context, IkeProposal proposal, uint8_t **lastSubstruc)
	Add the supported encryption transforms to the proposal. More...

error_t	ikeAddSupportedAuthTransforms (IkeContext context, IkeProposal proposal, uint8_t **lastSubstruc)
	Add the supported integrity transforms to the proposal. More...

error_t	ikeAddSupportedPrfTransforms (IkeContext context, IkeProposal proposal, uint8_t **lastSubstruc)
	Add the supported PRF transforms to the proposal. More...

uint_t	ikeGetNumTransforms (IkeTransformType transformType, const IkeProposal *proposal, size_t proposalLen)
	Get the number of transforms that match a given transform type. More...

uint16_t	ikeSelectTransform (IkeTransformType transformType, const uint16_t algoList, uint_t algoListLen, const IkeProposal proposal, size_t proposalLen)
	Transform negotiation. More...

uint16_t	ikeSelectKeTransform (IkeContext context, const IkeProposal proposal, size_t proposalLen)
	Key exchange transform negotiation. More...

const IkeEncAlgo *	ikeSelectEncTransform (IkeContext context, const IkeProposal proposal, size_t proposalLen)
	Encryption transform negotiation. More...

uint16_t	ikeSelectAuthTransform (IkeContext context, const IkeProposal proposal, size_t proposalLen)
	Integrity transform negotiation. More...

uint16_t	ikeSelectPrfTransform (IkeContext context, const IkeProposal proposal, size_t proposalLen)
	PRF transform negotiation. More...

error_t	ikeSelectSaProposal (IkeSaEntry sa, const IkeSaPayload payload, size_t spiSize)
	Select a single proposal (IKE protocol) More...

error_t	ikeSelectChildSaProposal (IkeChildSaEntry childSa, const IkeSaPayload payload)
	Select a single proposal (AH or ESP protocol) More...

error_t	ikeCheckSaProposal (IkeSaEntry sa, const IkeSaPayload payload)
	Check whether the selected proposal is acceptable (IKE protocol) More...

error_t	ikeCheckChildSaProposal (IkeChildSaEntry childSa, const IkeSaPayload payload)
	Check whether the selected proposal is acceptable (AH or ESP protocol) More...

bool_t	ikeIsAeadEncAlgo (uint16_t encAlgoId)
	Test if the transform ID identifies an AEAD encryption algorithm. More...

bool_t	ikeIsVariableLengthKeyEncAlgo (uint16_t encAlgoId)
	Test if the transform ID identifies a variable-length key encryption algorithm. More...

bool_t	ikeIsDhKeyExchangeAlgo (uint16_t groupNum)
	Test if the group number identifies a DH key exchange algorithm. More...

bool_t	ikeIsEcdhKeyExchangeAlgo (uint16_t groupNum)
	Test if the group number identifies an ECDH key exchange algorithm. More...

const EcCurveInfo *	ikeGetEcdhCurveInfo (uint16_t groupNum)
	Get the elliptic curve that matches the specified group number. More...

error_t	ikeLoadEcdhParams (EcDomainParameters *params, uint16_t groupNum)
	Load the EC parameters that match the specified group number. More...

uint16_t	ikeSelectDefaultDhGroup (void)
	Get the default Diffie-Hellman group number. More...

bool_t	ikeIsDhGroupSupported (uint16_t groupNum)
	Check whether a given Diffie-Hellman group is supported. More...

bool_t	ikeIsHashAlgoSupported (uint16_t hashAlgoId)
	Check whether a given signature hash algorithm is supported. More...

Detailed Description

IKEv2 algorithm negotiation.

License

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

This file is part of CycloneIPSEC 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: 2.4.0

Definition in file ike_algorithms.c.

Macro Definition Documentation

◆ TRACE_LEVEL

#define TRACE_LEVEL IKE_TRACE_LEVEL

Definition at line 32 of file ike_algorithms.c.

Function Documentation

◆ ikeAddSupportedAuthTransforms()

error_t ikeAddSupportedAuthTransforms	(	IkeContext *	context,
		IkeProposal *	proposal,
		uint8_t **	lastSubstruc
	)

Add the supported integrity transforms to the proposal.

Parameters

[in]	context	Pointer to the IKE context
[in,out]	proposal	Pointer to the Proposal substructure
[in,out]	lastSubstruc	Pointer to the Last Substruc field

Returns: Error code

Definition at line 1335 of file ike_algorithms.c.

◆ ikeAddSupportedEncTransforms()

error_t ikeAddSupportedEncTransforms	(	IkeContext *	context,
		IkeProposal *	proposal,
		uint8_t **	lastSubstruc
	)

Add the supported encryption transforms to the proposal.

Parameters

[in]	context	Pointer to the IKE context
[in,out]	proposal	Pointer to the Proposal substructure
[in,out]	lastSubstruc	Pointer to the Last Substruc field

Returns: Error code

Definition at line 1304 of file ike_algorithms.c.

◆ ikeAddSupportedKeTransforms()

error_t ikeAddSupportedKeTransforms	(	IkeContext *	context,
		IkeProposal *	proposal,
		uint8_t **	lastSubstruc
	)

Add the supported key exchange transforms to the proposal.

Parameters

[in]	context	Pointer to the IKE context
[in,out]	proposal	Pointer to the Proposal substructure
[in,out]	lastSubstruc	Pointer to the Last Substruc field

Returns: Error code

Definition at line 1274 of file ike_algorithms.c.

◆ ikeAddSupportedPrfTransforms()

error_t ikeAddSupportedPrfTransforms	(	IkeContext *	context,
		IkeProposal *	proposal,
		uint8_t **	lastSubstruc
	)

Add the supported PRF transforms to the proposal.

Parameters

[in]	context	Pointer to the IKE context
[in,out]	proposal	Pointer to the Proposal substructure
[in,out]	lastSubstruc	Pointer to the Last Substruc field

Returns: Error code

Definition at line 1365 of file ike_algorithms.c.

◆ ikeAddSupportedTransforms()

error_t ikeAddSupportedTransforms	(	IkeContext *	context,
		IkeProposal *	proposal,
		uint8_t **	lastSubstruc
	)

Add the supported IKE transforms to the proposal.

Parameters

[in]	context	Pointer to the IKE context
[in,out]	proposal	Pointer to the Proposal substructure
[in,out]	lastSubstruc	Pointer to the Last Substruc field

Returns: Error code

Definition at line 1232 of file ike_algorithms.c.

◆ ikeAddTransform()

error_t ikeAddTransform	(	IkeTransformType	transformType,
		uint16_t	transformId,
		uint16_t	keyLen,
		IkeProposal *	proposal,
		uint8_t **	lastSubstruc
	)

Add the supported transforms to the proposal.

Parameters

[in]	transformType	Transform type
[in]	transformId	Transform identifier
[in]	keyLen	Key length attribute (for encryption algorithms with variable-length keys)
[in,out]	proposal	Pointer to the Proposal substructure
[in,out]	lastSubstruc	Pointer to the Last Substruc field

Returns: Error code

Definition at line 1151 of file ike_algorithms.c.

◆ ikeCheckChildSaProposal()

error_t ikeCheckChildSaProposal	(	IkeChildSaEntry *	childSa,
		const IkeSaPayload *	payload
	)

Check whether the selected proposal is acceptable (AH or ESP protocol)

Parameters

[in]	childSa	Pointer to the Child SA
[in]	payload	Pointer to the Security Association payload

Returns: Error code

Definition at line 2028 of file ike_algorithms.c.

◆ ikeCheckSaProposal()

error_t ikeCheckSaProposal	(	IkeSaEntry *	sa,
		const IkeSaPayload *	payload
	)

Check whether the selected proposal is acceptable (IKE protocol)

Parameters

[in]	sa	Pointer to the IKE SA
[in]	payload	Pointer to the Security Association payload

Returns: Error code

Definition at line 1892 of file ike_algorithms.c.

◆ ikeGetEcdhCurveInfo()

const EcCurveInfo* ikeGetEcdhCurveInfo ( uint16_t groupNum )

Get the elliptic curve that matches the specified group number.

Parameters

[in] groupNum Group number

Returns: Elliptic curve domain parameters

Definition at line 2184 of file ike_algorithms.c.

◆ ikeGetNumTransforms()

uint_t ikeGetNumTransforms	(	IkeTransformType	transformType,
		const IkeProposal *	proposal,
		size_t	proposalLen
	)

Get the number of transforms that match a given transform type.

Parameters

[in]	transformType	Transform type
[in]	proposal	Pointer to the Proposal substructure
[in]	proposalLen	Length of the Proposal substructure, in bytes

Returns: Number of transforms

Definition at line 1395 of file ike_algorithms.c.

◆ ikeIsAeadEncAlgo()

bool_t ikeIsAeadEncAlgo ( uint16_t encAlgoId )

Test if the transform ID identifies an AEAD encryption algorithm.

Parameters

[in] encAlgoId Encryption algorithm identifier

Returns: TRUE if AEAD encryption algorithm, else FALSE

Definition at line 2065 of file ike_algorithms.c.

◆ ikeIsDhGroupSupported()

bool_t ikeIsDhGroupSupported ( uint16_t groupNum )

Check whether a given Diffie-Hellman group is supported.

Parameters

[in] groupNum Diffie-Hellman group number

Returns: TRUE is the Diffie-Hellman group is supported, else FALSE

Definition at line 2337 of file ike_algorithms.c.

◆ ikeIsDhKeyExchangeAlgo()

bool_t ikeIsDhKeyExchangeAlgo ( uint16_t groupNum )

Test if the group number identifies a DH key exchange algorithm.

Parameters

[in] groupNum Group number

Returns: TRUE if DH key exchange algorithm, else FALSE

Definition at line 2124 of file ike_algorithms.c.

◆ ikeIsEcdhKeyExchangeAlgo()

bool_t ikeIsEcdhKeyExchangeAlgo ( uint16_t groupNum )

Test if the group number identifies an ECDH key exchange algorithm.

Parameters

[in] groupNum Group number

Returns: TRUE if ECDH key exchange algorithm, else FALSE

Definition at line 2154 of file ike_algorithms.c.

◆ ikeIsHashAlgoSupported()

bool_t ikeIsHashAlgoSupported ( uint16_t hashAlgoId )

Check whether a given signature hash algorithm is supported.

Parameters

[in] hashAlgoId Signature hash algorithm identifier

Returns: TRUE is the signature hash algorithm is supported, else FALSE

Definition at line 2367 of file ike_algorithms.c.

◆ ikeIsVariableLengthKeyEncAlgo()

bool_t ikeIsVariableLengthKeyEncAlgo ( uint16_t encAlgoId )

Test if the transform ID identifies a variable-length key encryption algorithm.

Parameters

[in] encAlgoId Encryption algorithm identifier

Returns: TRUE if variable-length key encryption algorithm, else FALSE

Definition at line 2093 of file ike_algorithms.c.

◆ ikeLoadEcdhParams()

error_t ikeLoadEcdhParams	(	EcDomainParameters *	params,
		uint16_t	groupNum
	)

Load the EC parameters that match the specified group number.

Parameters

[in,out]	params	Elliptic curve domain parameters
[in]	groupNum	Group number

Returns: Error code

Definition at line 2295 of file ike_algorithms.c.

◆ ikeSelectAuthAlgo()

error_t ikeSelectAuthAlgo	(	IkeSaEntry *	sa,
		uint16_t	authAlgoId
	)

Select the relevant MAC algorithm.

Parameters

[in]	sa	Pointer to the IKE SA
[in]	authAlgoId	Authentication algorithm identifier

Returns: Error code

Definition at line 940 of file ike_algorithms.c.

◆ ikeSelectAuthTransform()

uint16_t ikeSelectAuthTransform	(	IkeContext *	context,
		const IkeProposal *	proposal,
		size_t	proposalLen
	)

Integrity transform negotiation.

Parameters

[in]	context	Pointer to the IKE context
[in]	proposal	Pointer to the Proposal substructure
[in]	proposalLen	Length of the Proposal substructure, in bytes

Returns: Selected integrity transform, if any

Definition at line 1692 of file ike_algorithms.c.

◆ ikeSelectChildSaProposal()

error_t ikeSelectChildSaProposal	(	IkeChildSaEntry *	childSa,
		const IkeSaPayload *	payload
	)

Select a single proposal (AH or ESP protocol)

Parameters

[in]	childSa	Pointer to the Child SA
[in]	payload	Pointer to the Security Association payload

Returns: Error code

Definition at line 1854 of file ike_algorithms.c.

◆ ikeSelectDefaultDhGroup()

uint16_t ikeSelectDefaultDhGroup ( void )

Get the default Diffie-Hellman group number.

Returns: Default Diffie-Hellman group number

Definition at line 2325 of file ike_algorithms.c.

◆ ikeSelectEncAlgo()

error_t ikeSelectEncAlgo	(	IkeSaEntry *	sa,
		uint16_t	encAlgoId,
		size_t	encKeyLen
	)

Select the relevant encryption algorithm.

Parameters

[in]	sa	Pointer to the IKE SA
[in]	encAlgoId	Encryption algorithm identifier
[in]	encKeyLen	Length of the encryption key, in bytes

Returns: Error code

Definition at line 351 of file ike_algorithms.c.

◆ ikeSelectEncTransform()

const IkeEncAlgo* ikeSelectEncTransform	(	IkeContext *	context,
		const IkeProposal *	proposal,
		size_t	proposalLen
	)

Encryption transform negotiation.

Parameters

[in]	context	Pointer to the IKE context
[in]	proposal	Pointer to the Proposal substructure
[in]	proposalLen	Length of the Proposal substructure, in bytes

Returns: Selected encryption transform, if any

Definition at line 1576 of file ike_algorithms.c.

◆ ikeSelectKeTransform()

uint16_t ikeSelectKeTransform	(	IkeContext *	context,
		const IkeProposal *	proposal,
		size_t	proposalLen
	)

Key exchange transform negotiation.

Parameters

[in]	context	Pointer to the IKE context
[in]	proposal	Pointer to the Proposal substructure
[in]	proposalLen	Length of the Proposal substructure, in bytes

Returns: Selected key exchange transform, if any

Definition at line 1559 of file ike_algorithms.c.

◆ ikeSelectPrfAlgo()

error_t ikeSelectPrfAlgo	(	IkeSaEntry *	sa,
		uint16_t	prfAlgoId
	)

Select the relevant PRF algorithm.

Parameters

[in]	sa	Pointer to the IKE SA
[in]	prfAlgoId	PRF algorithm identifier

Returns: Error code

Definition at line 1042 of file ike_algorithms.c.

◆ ikeSelectPrfTransform()

uint16_t ikeSelectPrfTransform	(	IkeContext *	context,
		const IkeProposal *	proposal,
		size_t	proposalLen
	)

PRF transform negotiation.

Parameters

[in]	context	Pointer to the IKE context
[in]	proposal	Pointer to the Proposal substructure
[in]	proposalLen	Length of the Proposal substructure, in bytes

Returns: Selected PRF transform, if any

Definition at line 1709 of file ike_algorithms.c.

◆ ikeSelectSaProposal()

error_t ikeSelectSaProposal	(	IkeSaEntry *	sa,
		const IkeSaPayload *	payload,
		size_t	spiSize
	)

Select a single proposal (IKE protocol)

Parameters

[in]	sa	Pointer to the IKE SA
[in]	payload	Pointer to the Security Association payload
[in]	spiSize	Expected SPI size, in bytes

Returns: Error code

Definition at line 1726 of file ike_algorithms.c.

◆ ikeSelectTransform()

uint16_t ikeSelectTransform	(	IkeTransformType	transformType,
		const uint16_t *	algoList,
		uint_t	algoListLen,
		const IkeProposal *	proposal,
		size_t	proposalLen
	)

Transform negotiation.

Parameters

[in]	transformType	Transform type
[in]	algoList	List of algorithms
[in]	algoListLen	Number of items in the list
[in]	proposal	Pointer to the Proposal substructure
[in]	proposalLen	Length of the Proposal substructure, in bytes

Returns: Selected transform, if any

Definition at line 1467 of file ike_algorithms.c.

Macros

Functions

Detailed Description

License

Macro Definition Documentation

◆ TRACE_LEVEL

Function Documentation

◆ ikeAddSupportedAuthTransforms()

◆ ikeAddSupportedEncTransforms()

◆ ikeAddSupportedKeTransforms()

◆ ikeAddSupportedPrfTransforms()

◆ ikeAddSupportedTransforms()

◆ ikeAddTransform()

◆ ikeCheckChildSaProposal()

◆ ikeCheckSaProposal()

◆ ikeGetEcdhCurveInfo()

◆ ikeGetNumTransforms()

◆ ikeIsAeadEncAlgo()

◆ ikeIsDhGroupSupported()

◆ ikeIsDhKeyExchangeAlgo()

◆ ikeIsEcdhKeyExchangeAlgo()

◆ ikeIsHashAlgoSupported()

◆ ikeIsVariableLengthKeyEncAlgo()

◆ ikeLoadEcdhParams()

◆ ikeSelectAuthAlgo()

◆ ikeSelectAuthTransform()

◆ ikeSelectChildSaProposal()

◆ ikeSelectDefaultDhGroup()

◆ ikeSelectEncAlgo()

◆ ikeSelectEncTransform()

◆ ikeSelectKeTransform()

◆ ikeSelectPrfAlgo()

◆ ikeSelectPrfTransform()

◆ ikeSelectSaProposal()

◆ ikeSelectTransform()