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ssl_tls12_populate_transform: store the en/decryption keys and alg in the new fields

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Signed-off-by: Przemyslaw Stekiel <przemyslaw.stekiel@mobica.com>
This commit is contained in:
Przemyslaw Stekiel
2022-01-11 14:44:01 +01:00
parent ce37d11c67
commit ffccda45df
1 changed files with 45 additions and 0 deletions
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45
library/ssl_tls.c
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@ -56,6 +56,9 @@
#include "mbedtls/oid.h"
#endif
/* Convert key bits to byte size */
#define KEY_BYTES( bits ) ( ( (size_t) bits + 7 ) / 8 )
#if defined(MBEDTLS_SSL_PROTO_DTLS)
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
@ -720,6 +723,14 @@ static int ssl_tls12_populate_transform( mbedtls_ssl_transform *transform,
const mbedtls_cipher_info_t *cipher_info;
const mbedtls_md_info_t *md_info;
#if defined(MBEDTLS_USE_PSA_CRYPTO)
psa_key_type_t key_type;
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
psa_algorithm_t alg;
size_t key_bits;
psa_status_t status;
#endif
#if !defined(MBEDTLS_DEBUG_C) && \
!defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
if( ssl->f_export_keys == NULL )
@ -1077,6 +1088,40 @@ static int ssl_tls12_populate_transform( mbedtls_ssl_transform *transform,
goto end;
}
#if defined(MBEDTLS_USE_PSA_CRYPTO)
if( ( status = mbedtls_cipher_to_psa( cipher_info->type,
transform->taglen,
&alg,
&key_type,
&key_bits ) ) != PSA_SUCCESS )
{
MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_cipher_to_psa", status );
goto end;
}
psa_set_key_usage_flags( &attributes, PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT );
psa_set_key_algorithm( &attributes, alg );
transform->psa_alg = alg;
if( ( status = psa_import_key( &attributes,
key1,
KEY_BYTES( key_bits ),
&transform->psa_key_enc ) ) != PSA_SUCCESS )
{
MBEDTLS_SSL_DEBUG_RET( 1, "psa_import_key", status );
goto end;
}
if( ( status = psa_import_key( &attributes,
key2,
KEY_BYTES( key_bits ),
&transform->psa_key_dec ) ) != PSA_SUCCESS )
{
MBEDTLS_SSL_DEBUG_RET( 1, "psa_import_key", status );
goto end;
}
#endif /* MBEDTLS_USE_PSA_CRYPTO */
#if defined(MBEDTLS_CIPHER_MODE_CBC)
if( mbedtls_cipher_info_get_mode( cipher_info ) == MBEDTLS_MODE_CBC )
{