Dtls_mbedtls.c File Reference

#include "../Include_i.h"

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Macros
#define	LOG_CLASS   "DTLS_mbedtls"

Functions
STATUS	createDtlsSession (PDtlsSessionCallbacks pDtlsSessionCallbacks, TIMER_QUEUE_HANDLE timerQueueHandle, INT32 certificateBits, BOOL generateRSACertificate, PRtcCertificate pRtcCertificates, PDtlsSession *ppDtlsSession)
STATUS	freeDtlsSession (PDtlsSession *ppDtlsSession)
INT32	dtlsSessionSendCallback (PVOID customData, const unsigned char *pBuf, ULONG len)
INT32	dtlsSessionReceiveCallback (PVOID customData, unsigned char *pBuf, ULONG len)
VOID	dtlsSessionSetTimerCallback (PVOID customData, UINT32 intermediateDelayInMs, UINT32 finalDelayInMs)
INT32	dtlsSessionGetTimerCallback (PVOID customData)
STATUS	dtlsTransmissionTimerCallback (UINT32 timerID, UINT64 currentTime, UINT64 customData)
INT32	dtlsSessionKeyDerivationCallback (PVOID customData, const unsigned char *pMasterSecret, const unsigned char *pKeyBlock, ULONG maclen, ULONG keylen, ULONG ivlen, const unsigned char clientRandom[32], const unsigned char serverRandom[32], mbedtls_tls_prf_types tlsProfile)
STATUS	dtlsSessionHandshakeInThread (PDtlsSession pDtlsSession, BOOL isServer)
STATUS	dtlsSessionStart (PDtlsSession pDtlsSession, BOOL isServer)
STATUS	dtlsSessionIsInitFinished (PDtlsSession pDtlsSession, PBOOL pIsFinished)
STATUS	dtlsSessionProcessPacket (PDtlsSession pDtlsSession, PBYTE pData, PINT32 pDataLen)
STATUS	dtlsSessionPutApplicationData (PDtlsSession pDtlsSession, PBYTE pData, INT32 dataLen)
STATUS	dtlsSessionGetLocalCertificateFingerprint (PDtlsSession pDtlsSession, PCHAR pBuff, UINT32 buffLen)
STATUS	dtlsSessionVerifyRemoteCertificateFingerprint (PDtlsSession pDtlsSession, PCHAR pExpectedFingerprint)
STATUS	dtlsSessionPopulateKeyingMaterial (PDtlsSession pDtlsSession, PDtlsKeyingMaterial pDtlsKeyingMaterial)
STATUS	dtlsSessionShutdown (PDtlsSession pDtlsSession)
STATUS	copyCertificateAndKey (mbedtls_x509_crt *pCert, mbedtls_pk_context *pKey, PDtlsSessionCertificateInfo pDst)
STATUS	createCertificateAndKey (INT32 certificateBits, BOOL generateRSACertificate, mbedtls_x509_crt *pCert, mbedtls_pk_context *pKey)
STATUS	freeCertificateAndKey (mbedtls_x509_crt *pCert, mbedtls_pk_context *pKey)
STATUS	dtlsCertificateFingerprint (mbedtls_x509_crt *pCert, PCHAR pBuff)

Variables
mbedtls_ssl_srtp_profile	DTLS_SRTP_SUPPORTED_PROFILES []

Macro Definition Documentation

LOG_CLASS

#define LOG_CLASS   "DTLS_mbedtls"

Function Documentation

copyCertificateAndKey()

STATUS copyCertificateAndKey	(	mbedtls_x509_crt *	pCert,
		mbedtls_pk_context *	pKey,
		PDtlsSessionCertificateInfo	pDst
	)

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createCertificateAndKey()

STATUS createCertificateAndKey	(	INT32	certificateBits,
		BOOL	generateRSACertificate,
		mbedtls_x509_crt *	pCert,
		mbedtls_pk_context *	pKey
	)

createCertificateAndKey generates a new certificate and a key If generateRSACertificate is true, RSA is going to be used for the key generation. Otherwise, ECDSA is going to be used. certificateBits is only being used when generateRSACertificate is true.

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createDtlsSession()

STATUS createDtlsSession	(	PDtlsSessionCallbacks	pDtlsSessionCallbacks,
		TIMER_QUEUE_HANDLE	timerQueueHandle,
		INT32	certificateBits,
		BOOL	generateRSACertificate,
		PRtcCertificate	pRtcCertificates,
		PDtlsSession *	ppDtlsSession
	)

Create DTLS session. Not thread safe.

Parameters

PDtlsSessionCallbacks	- callbacks
TIMER_QUEUE_HANDLE	- timer handle to schedule timer task with
INT32	- size of generated certificate
BOOL	- whether to generate certificate or not
PRtcCertificate	- user provided certificate
PDtlsSession*	- pointer to created DtlsSession object

Returns

STATUS - status of operation

dtlsCertificateFingerprint()

STATUS dtlsCertificateFingerprint	(	mbedtls_x509_crt *	pCert,
		PCHAR	pBuff
	)

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dtlsSessionGetLocalCertificateFingerprint()

STATUS dtlsSessionGetLocalCertificateFingerprint	(	PDtlsSession	pDtlsSession,
		PCHAR	pBuff,
		UINT32	buffLen
	)

dtlsSessionGetTimerCallback()

INT32 dtlsSessionGetTimerCallback

(

PVOID

customData

)

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dtlsSessionHandshakeInThread()

STATUS dtlsSessionHandshakeInThread	(	PDtlsSession	pDtlsSession,
		BOOL	isServer
	)

dtlsSessionIsInitFinished()

STATUS dtlsSessionIsInitFinished	(	PDtlsSession	pDtlsSession,
		PBOOL	pIsFinished
	)

dtlsSessionKeyDerivationCallback()

INT32 dtlsSessionKeyDerivationCallback	(	PVOID	customData,
		const unsigned char *	pMasterSecret,
		const unsigned char *	pKeyBlock,
		ULONG	maclen,
		ULONG	keylen,
		ULONG	ivlen,
		const unsigned char	clientRandom[32],
		const unsigned char	serverRandom[32],
		mbedtls_tls_prf_types	tlsProfile
	)

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dtlsSessionPopulateKeyingMaterial()

STATUS dtlsSessionPopulateKeyingMaterial	(	PDtlsSession	pDtlsSession,
		PDtlsKeyingMaterial	pDtlsKeyingMaterial
	)

dtlsSessionProcessPacket()

STATUS dtlsSessionProcessPacket	(	PDtlsSession	pDtlsSession,
		PBYTE	pData,
		PINT32	pDataLen
	)

dtlsSessionPutApplicationData()

STATUS dtlsSessionPutApplicationData	(	PDtlsSession	pDtlsSession,
		PBYTE	pData,
		INT32	dataLen
	)

dtlsSessionReceiveCallback()

INT32 dtlsSessionReceiveCallback	(	PVOID	customData,
		unsigned char *	pBuf,
		ULONG	len
	)

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dtlsSessionSendCallback()

INT32 dtlsSessionSendCallback	(	PVOID	customData,
		const unsigned char *	pBuf,
		ULONG	len
	)

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dtlsSessionSetTimerCallback()

VOID dtlsSessionSetTimerCallback	(	PVOID	customData,
		UINT32	intermediateDelayInMs,
		UINT32	finalDelayInMs
	)

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dtlsSessionShutdown()

STATUS dtlsSessionShutdown

(

PDtlsSession

pDtlsSession

)

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dtlsSessionStart()

STATUS dtlsSessionStart	(	PDtlsSession	pDtlsSession,
		BOOL	isServer
	)

Start DTLS handshake. Not thread safe.

Parameters

PDtlsSession	- DtlsSession object
BOOL	- is server

Returns

STATUS - status of operation

dtlsSessionVerifyRemoteCertificateFingerprint()

STATUS dtlsSessionVerifyRemoteCertificateFingerprint	(	PDtlsSession	pDtlsSession,
		PCHAR	pExpectedFingerprint
	)

dtlsTransmissionTimerCallback()

STATUS dtlsTransmissionTimerCallback	(	UINT32	timerID,
		UINT64	currentTime,
		UINT64	customData
	)

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freeCertificateAndKey()

STATUS freeCertificateAndKey	(	mbedtls_x509_crt *	pCert,
		mbedtls_pk_context *	pKey
	)

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freeDtlsSession()

STATUS freeDtlsSession

(

PDtlsSession *

ppDtlsSession

)

Free DTLS session. Not thread safe.

Parameters

PDtlsSession

- DtlsSession object to free

Returns

STATUS - status of operation

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Variable Documentation

DTLS_SRTP_SUPPORTED_PROFILES

mbedtls_ssl_srtp_profile DTLS_SRTP_SUPPORTED_PROFILES[]

Initial value:

= {
    MBEDTLS_TLS_SRTP_AES128_CM_HMAC_SHA1_80,
    MBEDTLS_TLS_SRTP_AES128_CM_HMAC_SHA1_32,
    MBEDTLS_TLS_SRTP_UNSET,
}

https://tools.ietf.org/html/rfc5764#section-4.1.2