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Add server writing of the extension

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Manuel Pégourié-Gonnard 2015-09-16 15:35:27 +02:00
parent bf57be690e
commit 55c7f99112
2 changed files with 51 additions and 0 deletions
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48
library/ssl_srv.c
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@ -2055,6 +2055,49 @@ static void ssl_write_supported_point_formats_ext( mbedtls_ssl_context *ssl,
}
#endif /* MBEDTLS_ECDH_C || MBEDTLS_ECDSA_C || MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
static void ssl_write_ecjpake_kkpp_ext( mbedtls_ssl_context *ssl,
unsigned char *buf,
size_t *olen )
{
int ret;
unsigned char *p = buf;
const unsigned char *end = ssl->out_buf + MBEDTLS_SSL_MAX_CONTENT_LEN;
size_t kkpp_len;
*olen = 0;
/* Skip costly computation if not needed */
if( ssl->transform_negotiate->ciphersuite_info->key_exchange !=
MBEDTLS_KEY_EXCHANGE_ECJPAKE )
return;
MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, ecjpake kkpp extension" ) );
if( end - p < 4 )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "buffer too small" ) );
return;
}
*p++ = (unsigned char)( ( MBEDTLS_TLS_EXT_ECJPAKE_KKPP >> 8 ) & 0xFF );
*p++ = (unsigned char)( ( MBEDTLS_TLS_EXT_ECJPAKE_KKPP ) & 0xFF );
if( ( ret = mbedtls_ecjpake_write_round_one( &ssl->handshake->ecjpake_ctx,
p + 2, end - p - 2, &kkpp_len,
ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1 , "mbedtls_ecjpake_write_round_one", ret );
return;
}
*p++ = (unsigned char)( ( kkpp_len >> 8 ) & 0xFF );
*p++ = (unsigned char)( ( kkpp_len ) & 0xFF );
*olen = kkpp_len + 4;
}
#endif /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
#if defined(MBEDTLS_SSL_ALPN )
static void ssl_write_alpn_ext( mbedtls_ssl_context *ssl,
unsigned char *buf, size_t *olen )
@ -2345,6 +2388,11 @@ static int ssl_write_server_hello( mbedtls_ssl_context *ssl )
ext_len += olen;
#endif
#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
ssl_write_ecjpake_kkpp_ext( ssl, p + 2 + ext_len, &olen );
ext_len += olen;
#endif
#if defined(MBEDTLS_SSL_ALPN)
ssl_write_alpn_ext( ssl, p + 2 + ext_len, &olen );
ext_len += olen;

3
tests/ssl-opt.sh
View file

@ -2510,6 +2510,7 @@ run_test "ECJPAKE: client not configured" \
-S "found ecjpake kkpp extension" \
-S "skip ecjpake kkpp extension" \
-S "ciphersuite mismatch: ecjpake not configured" \
-S "server hello, ecjpake kkpp extension" \
-S "None of the common ciphersuites is usable"
run_test "ECJPAKE: server not configured" \
@ -2522,6 +2523,7 @@ run_test "ECJPAKE: server not configured" \
-s "found ecjpake kkpp extension" \
-s "skip ecjpake kkpp extension" \
-s "ciphersuite mismatch: ecjpake not configured" \
-S "server hello, ecjpake kkpp extension" \
-s "None of the common ciphersuites is usable"
run_test "ECJPAKE: working, TLS" \
@ -2534,6 +2536,7 @@ run_test "ECJPAKE: working, TLS" \
-s "found ecjpake kkpp extension" \
-S "skip ecjpake kkpp extension" \
-S "ciphersuite mismatch: ecjpake not configured" \
-s "server hello, ecjpake kkpp extension" \
-S "None of the common ciphersuites is usable"
# Tests for ciphersuites per version