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tls13: add key_schedule_stage_early_data

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Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
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Jerry Yu
2021-09-09 14:31:24 +08:00
parent 24c0ec31f9
commit 89ea321d96
3 changed files with 59 additions and 0 deletions
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25
library/ssl_tls13_keys.h
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@ -531,4 +531,29 @@ int mbedtls_ssl_tls13_populate_transform( mbedtls_ssl_transform *transform,
mbedtls_ssl_key_set const *traffic_keys,
mbedtls_ssl_context *ssl );
/*
* TLS 1.3 key schedule evolutions
*
* Early Data -> Handshake -> Application
*
* Small wrappers around mbedtls_ssl_tls1_3_evolve_secret().
*/
/**
* \brief Begin TLS 1.3 key schedule by calculating early secret
* from chosen PSK.
*
* 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 Initial -> Early transition.
*
* In the early stage, mbedtls_ssl_tls1_3_generate_early_data_keys()
* can be used to derive the 0-RTT traffic keys.
*
* \param ssl The SSL context to operate on.
*
* \returns \c 0 on success.
* \returns A negative error code on failure.
*/
int mbedtls_ssl_tls13_key_schedule_stage_early_data( mbedtls_ssl_context *ssl );
#endif /* MBEDTLS_SSL_TLS1_3_KEYS_H */