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Merge pull request #5727 from SiliconLabs/feature/PSEC-3207-TLS13-hashing-HMAC-to-PSA

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Feature psec-3207 move TLS13 hashing and hmac to psa
This commit is contained in:
Manuel Pégourié-Gonnard 2022-06-08 11:53:35 +02:00 committed by GitHub
commit 3a833271aa
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 30 additions and 41 deletions
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71
library/ssl_tls13_generic.c
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@ -34,6 +34,9 @@
#include "ssl_tls13_keys.h"
#include "ssl_debug_helpers.h"
#include "psa/crypto.h"
#include "mbedtls/psa_util.h"
const uint8_t mbedtls_ssl_tls13_hello_retry_request_magic[
MBEDTLS_SERVER_HELLO_RANDOM_LEN ] =
{ 0xCF, 0x21, 0xAD, 0x74, 0xE5, 0x9A, 0x61, 0x11,
@ -160,12 +163,14 @@ static int ssl_tls13_parse_certificate_verify( mbedtls_ssl_context *ssl,
size_t verify_buffer_len )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
const unsigned char *p = buf;
uint16_t algorithm;
size_t signature_len;
mbedtls_pk_type_t sig_alg;
mbedtls_md_type_t md_alg;
unsigned char verify_hash[MBEDTLS_MD_MAX_SIZE];
psa_algorithm_t hash_alg = PSA_ALG_NONE;
unsigned char verify_hash[PSA_HASH_MAX_SIZE];
size_t verify_hash_len;
void const *options = NULL;
@ -212,6 +217,12 @@ static int ssl_tls13_parse_certificate_verify( mbedtls_ssl_context *ssl,
goto error;
}
hash_alg = mbedtls_psa_translate_md( md_alg );
if( hash_alg == 0 )
{
goto error;
}
MBEDTLS_SSL_DEBUG_MSG( 3, ( "Certificate Verify: Signature algorithm ( %04x )",
( unsigned int ) algorithm ) );
@ -229,38 +240,15 @@ static int ssl_tls13_parse_certificate_verify( mbedtls_ssl_context *ssl,
p += 2;
MBEDTLS_SSL_CHK_BUF_READ_PTR( p, end, signature_len );
/* Hash verify buffer with indicated hash function */
switch( md_alg )
status = psa_hash_compute( hash_alg,
verify_buffer,
verify_buffer_len,
verify_hash,
sizeof( verify_hash ),
&verify_hash_len );
if( status != PSA_SUCCESS )
{
#if defined(MBEDTLS_SHA256_C)
case MBEDTLS_MD_SHA256:
verify_hash_len = 32;
ret = mbedtls_sha256( verify_buffer, verify_buffer_len, verify_hash, 0 );
break;
#endif /* MBEDTLS_SHA256_C */
#if defined(MBEDTLS_SHA384_C)
case MBEDTLS_MD_SHA384:
verify_hash_len = 48;
ret = mbedtls_sha512( verify_buffer, verify_buffer_len, verify_hash, 1 );
break;
#endif /* MBEDTLS_SHA384_C */
#if defined(MBEDTLS_SHA512_C)
case MBEDTLS_MD_SHA512:
verify_hash_len = 64;
ret = mbedtls_sha512( verify_buffer, verify_buffer_len, verify_hash, 0 );
break;
#endif /* MBEDTLS_SHA512_C */
default:
ret = MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE;
break;
}
if( ret != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, "hash computation error", ret );
MBEDTLS_SSL_DEBUG_RET( 1, "hash computation PSA error", status );
goto error;
}
@ -991,11 +979,12 @@ static int ssl_tls13_write_certificate_verify_body( mbedtls_ssl_context *ssl,
size_t verify_buffer_len;
mbedtls_pk_type_t pk_type = MBEDTLS_PK_NONE;
mbedtls_md_type_t md_alg = MBEDTLS_MD_NONE;
psa_algorithm_t psa_algorithm = PSA_ALG_NONE;
uint16_t algorithm = MBEDTLS_TLS1_3_SIG_NONE;
size_t signature_len = 0;
const mbedtls_md_info_t *md_info;
unsigned char verify_hash[ MBEDTLS_MD_MAX_SIZE ];
size_t verify_hash_len;
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
*out_len = 0;
@ -1056,15 +1045,15 @@ static int ssl_tls13_write_certificate_verify_body( mbedtls_ssl_context *ssl,
p += 2;
/* Hash verify buffer with indicated hash function */
md_info = mbedtls_md_info_from_type( md_alg );
if( md_info == NULL )
return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
psa_algorithm = mbedtls_psa_translate_md( md_alg );
status = psa_hash_compute( psa_algorithm,
verify_buffer,
verify_buffer_len,
verify_hash,sizeof( verify_hash ),
&verify_hash_len );
if( status != PSA_SUCCESS )
return( psa_ssl_status_to_mbedtls( status ) );
ret = mbedtls_md( md_info, verify_buffer, verify_buffer_len, verify_hash );
if( ret != 0 )
return( ret );
verify_hash_len = mbedtls_md_get_size( md_info );
MBEDTLS_SSL_DEBUG_BUF( 3, "verify hash", verify_hash, verify_hash_len );
if( ( ret = mbedtls_pk_sign_ext( pk_type, own_key,