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erase early secrets and transcripts

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Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
This commit is contained in:
Jerry Yu 2022-11-23 18:26:20 +08:00
parent a5db6c0ce3
commit 3d78e08ac0
1 changed files with 10 additions and 5 deletions
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15
library/ssl_tls13_keys.c
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@ -1124,7 +1124,7 @@ static int ssl_tls13_generate_early_key( mbedtls_ssl_context *ssl,
if( ret != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, "ssl_tls13_get_cipher_key_info", ret );
return( ret );
goto cleanup;
}
md_type = ciphersuite_info->mac;
@ -1141,7 +1141,7 @@ static int ssl_tls13_generate_early_key( mbedtls_ssl_context *ssl,
MBEDTLS_SSL_DEBUG_RET( 1,
"mbedtls_ssl_get_handshake_transcript",
ret );
return( ret );
goto cleanup;
}
ret = mbedtls_ssl_tls13_derive_early_secrets(
@ -1151,7 +1151,7 @@ static int ssl_tls13_generate_early_key( mbedtls_ssl_context *ssl,
{
MBEDTLS_SSL_DEBUG_RET(
1, "mbedtls_ssl_tls13_derive_early_secrets", ret );
return( ret );
goto cleanup;
}
MBEDTLS_SSL_DEBUG_BUF(
@ -1181,7 +1181,7 @@ static int ssl_tls13_generate_early_key( mbedtls_ssl_context *ssl,
if( ret != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, "ssl_tls13_make_traffic_key", ret );
return( 0 );
goto cleanup;
}
traffic_keys->key_len = key_len;
traffic_keys->iv_len = iv_len;
@ -1196,7 +1196,12 @@ static int ssl_tls13_generate_early_key( mbedtls_ssl_context *ssl,
MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= ssl_tls13_generate_early_key" ) );
return( 0 );
cleanup:
/* Erase secret and transcript */
mbedtls_platform_zeroize(
tls13_early_secrets, sizeof( mbedtls_ssl_tls13_early_secrets ) );
mbedtls_platform_zeroize( transcript, sizeof( transcript ) );
return( ret );
}
int mbedtls_ssl_tls13_compute_early_transform( mbedtls_ssl_context *ssl )