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ssl_tls: remove code related to DHE-RSA

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Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
This commit is contained in:
Valerio Setti 2025-01-22 11:33:55 +01:00
parent 98f348a2c5
commit 89743b5db5
4 changed files with 0 additions and 151 deletions
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3
include/mbedtls/ssl.h
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@ -657,9 +657,6 @@ union mbedtls_ssl_premaster_secret {
#if defined(MBEDTLS_KEY_EXCHANGE_RSA_ENABLED)
unsigned char _pms_rsa[48]; /* RFC 5246 8.1.1 */
#endif
#if defined(MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED)
unsigned char _pms_dhm[MBEDTLS_MPI_MAX_SIZE]; /* RFC 5246 8.1.2 */
#endif
#if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED) || \
defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED) || \
defined(MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED) || \

1
library/ssl_tls.c
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@ -8791,7 +8791,6 @@ int mbedtls_ssl_check_cert_usage(const mbedtls_x509_crt *cert,
usage = MBEDTLS_X509_KU_KEY_ENCIPHERMENT;
break;
case MBEDTLS_KEY_EXCHANGE_DHE_RSA:
case MBEDTLS_KEY_EXCHANGE_ECDHE_RSA:
case MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA:
usage = MBEDTLS_X509_KU_DIGITAL_SIGNATURE;

86
library/ssl_tls12_client.c
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@ -1618,46 +1618,6 @@ static int ssl_parse_server_hello(mbedtls_ssl_context *ssl)
return 0;
}
#if defined(MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED)
MBEDTLS_CHECK_RETURN_CRITICAL
static int ssl_parse_server_dh_params(mbedtls_ssl_context *ssl,
unsigned char **p,
unsigned char *end)
{
int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
size_t dhm_actual_bitlen;
/*
* Ephemeral DH parameters:
*
* struct {
* opaque dh_p<1..2^16-1>;
* opaque dh_g<1..2^16-1>;
* opaque dh_Ys<1..2^16-1>;
* } ServerDHParams;
*/
if ((ret = mbedtls_dhm_read_params(&ssl->handshake->dhm_ctx,
p, end)) != 0) {
MBEDTLS_SSL_DEBUG_RET(2, ("mbedtls_dhm_read_params"), ret);
return ret;
}
dhm_actual_bitlen = mbedtls_dhm_get_bitlen(&ssl->handshake->dhm_ctx);
if (dhm_actual_bitlen < ssl->conf->dhm_min_bitlen) {
MBEDTLS_SSL_DEBUG_MSG(1, ("DHM prime too short: %" MBEDTLS_PRINTF_SIZET " < %u",
dhm_actual_bitlen,
ssl->conf->dhm_min_bitlen));
return MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE;
}
MBEDTLS_SSL_DEBUG_MPI(3, "DHM: P ", &ssl->handshake->dhm_ctx.P);
MBEDTLS_SSL_DEBUG_MPI(3, "DHM: G ", &ssl->handshake->dhm_ctx.G);
MBEDTLS_SSL_DEBUG_MPI(3, "DHM: GY", &ssl->handshake->dhm_ctx.GY);
return ret;
}
#endif /* MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED */
#if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED) || \
defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED) || \
defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED)
@ -2047,18 +2007,6 @@ start_processing:
; /* nothing more to do */
} else
#endif /* MBEDTLS_KEY_EXCHANGE_PSK_ENABLED */
#if defined(MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED)
if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_RSA) {
if (ssl_parse_server_dh_params(ssl, &p, end) != 0) {
MBEDTLS_SSL_DEBUG_MSG(1, ("bad server key exchange message"));
mbedtls_ssl_send_alert_message(
ssl,
MBEDTLS_SSL_ALERT_LEVEL_FATAL,
MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER);
return MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER;
}
} else
#endif /* MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED */
#if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED) || \
defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED) || \
defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED)
@ -2545,40 +2493,6 @@ static int ssl_write_client_key_exchange(mbedtls_ssl_context *ssl)
MBEDTLS_SSL_DEBUG_MSG(2, ("=> write client key exchange"));
#if defined(MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED)
if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_RSA) {
/*
* DHM key exchange -- send G^X mod P
*/
content_len = mbedtls_dhm_get_len(&ssl->handshake->dhm_ctx);
MBEDTLS_PUT_UINT16_BE(content_len, ssl->out_msg, 4);
header_len = 6;
ret = mbedtls_dhm_make_public(&ssl->handshake->dhm_ctx,
(int) mbedtls_dhm_get_len(&ssl->handshake->dhm_ctx),
&ssl->out_msg[header_len], content_len,
ssl->conf->f_rng, ssl->conf->p_rng);
if (ret != 0) {
MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_dhm_make_public", ret);
return ret;
}
MBEDTLS_SSL_DEBUG_MPI(3, "DHM: X ", &ssl->handshake->dhm_ctx.X);
MBEDTLS_SSL_DEBUG_MPI(3, "DHM: GX", &ssl->handshake->dhm_ctx.GX);
if ((ret = mbedtls_dhm_calc_secret(&ssl->handshake->dhm_ctx,
ssl->handshake->premaster,
MBEDTLS_PREMASTER_SIZE,
&ssl->handshake->pmslen,
ssl->conf->f_rng, ssl->conf->p_rng)) != 0) {
MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_dhm_calc_secret", ret);
return ret;
}
MBEDTLS_SSL_DEBUG_MPI(3, "DHM: K ", &ssl->handshake->dhm_ctx.K);
} else
#endif /* MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED */
#if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED) || \
defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED) || \
defined(MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED) || \

61
library/ssl_tls12_server.c
View File

@ -3254,43 +3254,6 @@ static int ssl_write_server_hello_done(mbedtls_ssl_context *ssl)
return 0;
}
#if defined(MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED)
MBEDTLS_CHECK_RETURN_CRITICAL
static int ssl_parse_client_dh_public(mbedtls_ssl_context *ssl, unsigned char **p,
const unsigned char *end)
{
int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
size_t n;
/*
* Receive G^Y mod P, premaster = (G^Y)^X mod P
*/
if (*p + 2 > end) {
MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange message"));
return MBEDTLS_ERR_SSL_DECODE_ERROR;
}
n = MBEDTLS_GET_UINT16_BE(*p, 0);
*p += 2;
if (*p + n > end) {
MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange message"));
return MBEDTLS_ERR_SSL_DECODE_ERROR;
}
if ((ret = mbedtls_dhm_read_public(&ssl->handshake->dhm_ctx, *p, n)) != 0) {
MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_dhm_read_public", ret);
return MBEDTLS_ERR_SSL_DECODE_ERROR;
}
*p += n;
MBEDTLS_SSL_DEBUG_MPI(3, "DHM: GY", &ssl->handshake->dhm_ctx.GY);
return ret;
}
#endif /* MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED */
#if defined(MBEDTLS_KEY_EXCHANGE_RSA_ENABLED)
#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
@ -3573,30 +3536,6 @@ static int ssl_parse_client_key_exchange(mbedtls_ssl_context *ssl)
return MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE;
}
#if defined(MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED)
if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_RSA) {
if ((ret = ssl_parse_client_dh_public(ssl, &p, end)) != 0) {
MBEDTLS_SSL_DEBUG_RET(1, ("ssl_parse_client_dh_public"), ret);
return ret;
}
if (p != end) {
MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange"));
return MBEDTLS_ERR_SSL_DECODE_ERROR;
}
if ((ret = mbedtls_dhm_calc_secret(&ssl->handshake->dhm_ctx,
ssl->handshake->premaster,
MBEDTLS_PREMASTER_SIZE,
&ssl->handshake->pmslen,
ssl->conf->f_rng, ssl->conf->p_rng)) != 0) {
MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_dhm_calc_secret", ret);
return MBEDTLS_ERR_SSL_DECODE_ERROR;
}
MBEDTLS_SSL_DEBUG_MPI(3, "DHM: K ", &ssl->handshake->dhm_ctx.K);
} else
#endif /* MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED */
#if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED) || \
defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED) || \
defined(MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED) || \