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psa_crypto: do not validate DH groups which are not enabled

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Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
This commit is contained in:
Valerio Setti 2024-01-17 15:19:30 +01:00
parent e8683ce9ef
commit 504a10254c
1 changed files with 24 additions and 6 deletions
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30
library/psa_crypto.c
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@ -129,12 +129,30 @@ int psa_can_do_cipher(psa_key_type_t key_type, psa_algorithm_t cipher_alg)
defined(PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE)
static int psa_is_dh_key_size_valid(size_t bits)
{
if (bits != 2048 && bits != 3072 && bits != 4096 &&
bits != 6144 && bits != 8192) {
return 0;
switch (bits) {
#if defined(PSA_WANT_DH_RFC7919_2048)
case 2048:
return 1;
#endif /* PSA_WANT_DH_RFC7919_2048 */
#if defined(PSA_WANT_DH_RFC7919_3072)
case 3072:
return 1;
#endif /* PSA_WANT_DH_RFC7919_3072 */
#if defined(PSA_WANT_DH_RFC7919_4096)
case 4096:
return 1;
#endif /* PSA_WANT_DH_RFC7919_4096 */
#if defined(PSA_WANT_DH_RFC7919_6144)
case 6144:
return 1;
#endif /* PSA_WANT_DH_RFC7919_6144 */
#if defined(PSA_WANT_DH_RFC7919_8192)
case 8192:
return 1;
#endif /* PSA_WANT_DH_RFC7919_8192 */
default:
return 0;
}
return 1;
}
#endif /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_IMPORT ||
MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY ||
@ -577,7 +595,7 @@ psa_status_t psa_import_key_into_slot(
defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY)
if (PSA_KEY_TYPE_IS_DH(type)) {
if (psa_is_dh_key_size_valid(PSA_BYTES_TO_BITS(data_length)) == 0) {
return PSA_ERROR_INVALID_ARGUMENT;
return PSA_ERROR_NOT_SUPPORTED;
}
return mbedtls_psa_ffdh_import_key(attributes,
data, data_length,