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Implement generate resumption master secret

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Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
This commit is contained in:
Jerry Yu 2022-08-03 12:28:08 +08:00
parent db8c5faed7
commit 49d63f8c36
1 changed files with 33 additions and 0 deletions
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33
library/ssl_tls13_keys.c
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@ -1507,9 +1507,42 @@ cleanup:
int mbedtls_ssl_tls13_generate_resumption_master_secret(
mbedtls_ssl_context *ssl )
{
int ret = 0;
mbedtls_md_type_t md_type;
unsigned char transcript[MBEDTLS_MD_MAX_SIZE];
size_t transcript_len;
MBEDTLS_SSL_DEBUG_MSG( 2,
( "=> mbedtls_ssl_tls13_generate_resumption_master_secret" ) );
md_type = ssl->handshake->ciphersuite_info->mac;
ret = mbedtls_ssl_get_handshake_transcript( ssl, md_type,
transcript, sizeof( transcript ),
&transcript_len );
if( ret != 0 )
return( ret );
ret = mbedtls_ssl_tls13_derive_resumption_master_secret(
mbedtls_psa_translate_md( md_type ),
ssl->handshake->tls13_master_secrets.app,
transcript, transcript_len,
&ssl->session_negotiate->app_secrets );
if( ret != 0 )
return( ret );
/* Erase master secrets */
mbedtls_platform_zeroize( &ssl->handshake->tls13_master_secrets,
sizeof( ssl->handshake->tls13_master_secrets ) );
MBEDTLS_SSL_DEBUG_BUF( 4, "Resumption master secret",
ssl->session_negotiate->app_secrets.resumption_master_secret,
mbedtls_md_get_size( mbedtls_md_info_from_type( md_type ) ) );
MBEDTLS_SSL_DEBUG_MSG( 2,
( "<= mbedtls_ssl_tls13_generate_resumption_master_secret" ) );
return( 0 );
}