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tls: psa_pake: fix missing new round one parsing function on tls12 server

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Signed-off-by: Valerio Setti <vsetti@baylibre.com>
This commit is contained in:
Valerio Setti 2022-11-17 15:34:59 +01:00
parent a08b1a40a0
commit a988364767
1 changed files with 7 additions and 36 deletions
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43
library/ssl_tls12_server.c
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@ -1995,11 +1995,7 @@ static void ssl_write_ecjpake_kkpp_ext( mbedtls_ssl_context *ssl,
unsigned char *buf,
size_t *olen )
{
#if defined(MBEDTLS_USE_PSA_CRYPTO)
psa_status_t status;
#else
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
#endif /* MBEDTLS_USE_PSA_CRYPTO */
unsigned char *p = buf;
const unsigned char *end = ssl->out_msg + MBEDTLS_SSL_OUT_CONTENT_LEN;
size_t kkpp_len;
@ -2023,40 +2019,15 @@ static void ssl_write_ecjpake_kkpp_ext( mbedtls_ssl_context *ssl,
p += 2;
#if defined(MBEDTLS_USE_PSA_CRYPTO)
size_t output_offset = 0;
size_t output_len;
/* Repeat the KEY_SHARE, ZK_PUBLIC & ZF_PROOF twice */
for( unsigned int x = 1 ; x <= 2 ; ++x )
ret = mbedtls_psa_ecjpake_write_round_one( &ssl->handshake->psa_pake_ctx,
p + 2, end - p - 2, &kkpp_len );
if ( ret != 0 )
{
for( psa_pake_step_t step = PSA_PAKE_STEP_KEY_SHARE ;
step <= PSA_PAKE_STEP_ZK_PROOF ;
++step )
{
/* For each step, prepend 1 byte with the length of the data */
if (step != PSA_PAKE_STEP_ZK_PROOF) {
*(p + 2 + output_offset) = 65;
} else {
*(p + 2 + output_offset) = 32;
}
output_offset += 1;
status = psa_pake_output( &ssl->handshake->psa_pake_ctx,
step, p + 2 + output_offset,
end - p - output_offset - 2,
&output_len );
if( status != PSA_SUCCESS )
{
psa_destroy_key( ssl->handshake->psa_pake_password );
psa_pake_abort( &ssl->handshake->psa_pake_ctx );
MBEDTLS_SSL_DEBUG_RET( 1 , "psa_pake_output", status );
return;
}
output_offset += output_len;
}
psa_destroy_key( ssl->handshake->psa_pake_password );
psa_pake_abort( &ssl->handshake->psa_pake_ctx );
MBEDTLS_SSL_DEBUG_RET( 1 , "psa_pake_output", ret );
return;
}
kkpp_len = output_offset;
#else
ret = mbedtls_ecjpake_write_round_one( &ssl->handshake->ecjpake_ctx,
p + 2, end - p - 2, &kkpp_len,