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tls13: add handshake key schedule

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Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
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Jerry Yu
2021-09-09 17:14:45 +08:00
parent 61e35e0047
commit a0650ebb9d
2 changed files with 111 additions and 1 deletions
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20
library/ssl_tls13_keys.h
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@ -532,12 +532,30 @@ int mbedtls_ssl_tls13_populate_transform( mbedtls_ssl_transform *transform,
*/
int mbedtls_ssl_tls1_3_key_schedule_stage_early( mbedtls_ssl_context *ssl );
/**
* \brief Transition into handshake stage of TLS 1.3 key schedule.
*
* The TLS 1.3 key schedule can be viewed as a simple state machine
* with states Initial -> Early -> Handshake -> Application, and
* this function represents the Early -> Handshake transition.
*
* In the handshake stage, mbedtls_ssl_tls1_3_generate_handshake_keys()
* can be used to derive the handshake traffic keys.
*
* \param ssl The SSL context to operate on. This must be in key schedule
* stage \c Early.
*
* \returns \c 0 on success.
* \returns A negative error code on failure.
*/
int mbedtls_ssl_tls1_3_key_schedule_stage_handshake( mbedtls_ssl_context *ssl );
/**
* \brief Compute TLS 1.3 handshake traffic keys.
*
* \param ssl The SSL context to operate on. This must be in
* key schedule stage \c Handshake, see
* mbedtls_ssl_tls13_key_schedule_stage_handshake().
* mbedtls_ssl_tls1_3_key_schedule_stage_handshake().
* \param traffic_keys The address at which to store the handshake traffic key
* keys. This must be writable but may be uninitialized.
*