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Merge pull request #8002 from valeriosetti/issue7904

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PSA maximum size macro definitions should take support into account
This commit is contained in:
Bence Szépkúti 2023-08-02 05:57:28 +00:00 committed by GitHub
commit 895074e3f9
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3 changed files with 75 additions and 19 deletions
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86
include/psa/crypto_sizes.h
View File

@ -633,10 +633,18 @@
* This macro expands to a compile-time constant integer. This value
* is the maximum size of a signature in bytes.
*/
#define PSA_SIGNATURE_MAX_SIZE \
(PSA_BITS_TO_BYTES(PSA_VENDOR_RSA_MAX_KEY_BITS) > PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE ? \
PSA_BITS_TO_BYTES(PSA_VENDOR_RSA_MAX_KEY_BITS) : \
PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE)
#define PSA_SIGNATURE_MAX_SIZE 1
#if (defined(PSA_WANT_ALG_ECDSA) || defined(PSA_WANT_ALG_DETERMINISTIC_ECDSA)) && \
(PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE > PSA_SIGNATURE_MAX_SIZE)
#undef PSA_SIGNATURE_MAX_SIZE
#define PSA_SIGNATURE_MAX_SIZE PSA_VENDOR_ECDSA_SIGNATURE_MAX_SIZE
#endif
#if (defined(PSA_WANT_ALG_RSA_PKCS1V15_SIGN) || defined(PSA_WANT_ALG_RSA_PSS)) && \
(PSA_BITS_TO_BYTES(PSA_VENDOR_RSA_MAX_KEY_BITS) > PSA_SIGNATURE_MAX_SIZE)
#undef PSA_SIGNATURE_MAX_SIZE
#define PSA_SIGNATURE_MAX_SIZE PSA_BITS_TO_BYTES(PSA_VENDOR_RSA_MAX_KEY_BITS)
#endif
/** Sufficient output buffer size for psa_asymmetric_encrypt().
*
@ -948,10 +956,29 @@
*
* See also #PSA_EXPORT_KEY_OUTPUT_SIZE(\p key_type, \p key_bits).
*/
#define PSA_EXPORT_KEY_PAIR_MAX_SIZE \
PSA_MAX_OF_THREE(PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE(PSA_VENDOR_RSA_MAX_KEY_BITS), \
PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS), \
PSA_KEY_EXPORT_FFDH_KEY_PAIR_MAX_SIZE(PSA_VENDOR_FFDH_MAX_KEY_BITS))
#define PSA_EXPORT_KEY_PAIR_MAX_SIZE 1
#if defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_BASIC) && \
(PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS) > \
PSA_EXPORT_KEY_PAIR_MAX_SIZE)
#undef PSA_EXPORT_KEY_PAIR_MAX_SIZE
#define PSA_EXPORT_KEY_PAIR_MAX_SIZE \
PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS)
#endif
#if defined(PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_BASIC) && \
(PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE(PSA_VENDOR_RSA_MAX_KEY_BITS) > \
PSA_EXPORT_KEY_PAIR_MAX_SIZE)
#undef PSA_EXPORT_KEY_PAIR_MAX_SIZE
#define PSA_EXPORT_KEY_PAIR_MAX_SIZE \
PSA_KEY_EXPORT_RSA_KEY_PAIR_MAX_SIZE(PSA_VENDOR_RSA_MAX_KEY_BITS)
#endif
#if defined(PSA_WANT_KEY_TYPE_DH_KEY_PAIR_BASIC) && \
(PSA_KEY_EXPORT_FFDH_KEY_PAIR_MAX_SIZE(PSA_VENDOR_FFDH_MAX_KEY_BITS) > \
PSA_EXPORT_KEY_PAIR_MAX_SIZE)
#undef PSA_EXPORT_KEY_PAIR_MAX_SIZE
#define PSA_EXPORT_KEY_PAIR_MAX_SIZE \
PSA_KEY_EXPORT_FFDH_KEY_PAIR_MAX_SIZE(PSA_VENDOR_FFDH_MAX_KEY_BITS)
#endif
/** Sufficient buffer size for exporting any asymmetric public key.
*
@ -962,11 +989,29 @@
*
* See also #PSA_EXPORT_PUBLIC_KEY_OUTPUT_SIZE(\p key_type, \p key_bits).
*/
#define PSA_EXPORT_PUBLIC_KEY_MAX_SIZE \
PSA_MAX_OF_THREE(PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_RSA_MAX_KEY_BITS), \
PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS), \
PSA_KEY_EXPORT_FFDH_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_FFDH_MAX_KEY_BITS))
#define PSA_EXPORT_PUBLIC_KEY_MAX_SIZE 1
#if defined(PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY) && \
(PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS) > \
PSA_EXPORT_PUBLIC_KEY_MAX_SIZE)
#undef PSA_EXPORT_PUBLIC_KEY_MAX_SIZE
#define PSA_EXPORT_PUBLIC_KEY_MAX_SIZE \
PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS)
#endif
#if defined(PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY) && \
(PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_RSA_MAX_KEY_BITS) > \
PSA_EXPORT_PUBLIC_KEY_MAX_SIZE)
#undef PSA_EXPORT_PUBLIC_KEY_MAX_SIZE
#define PSA_EXPORT_PUBLIC_KEY_MAX_SIZE \
PSA_KEY_EXPORT_RSA_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_RSA_MAX_KEY_BITS)
#endif
#if defined(PSA_WANT_KEY_TYPE_DH_PUBLIC_KEY) && \
(PSA_KEY_EXPORT_FFDH_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_FFDH_MAX_KEY_BITS) > \
PSA_EXPORT_PUBLIC_KEY_MAX_SIZE)
#undef PSA_EXPORT_PUBLIC_KEY_MAX_SIZE
#define PSA_EXPORT_PUBLIC_KEY_MAX_SIZE \
PSA_KEY_EXPORT_FFDH_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_FFDH_MAX_KEY_BITS)
#endif
/** Sufficient output buffer size for psa_raw_key_agreement().
*
@ -1002,11 +1047,18 @@
*
* See also #PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE(\p key_type, \p key_bits).
*/
#define PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE \
(PSA_BITS_TO_BYTES(PSA_VENDOR_ECC_MAX_CURVE_BITS) > \
PSA_BITS_TO_BYTES(PSA_VENDOR_FFDH_MAX_KEY_BITS) ? \
PSA_BITS_TO_BYTES(PSA_VENDOR_ECC_MAX_CURVE_BITS) : \
PSA_BITS_TO_BYTES(PSA_VENDOR_FFDH_MAX_KEY_BITS))
#define PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE 1
#if defined(PSA_WANT_ALG_ECDH) && \
(PSA_BITS_TO_BYTES(PSA_VENDOR_ECC_MAX_CURVE_BITS) > PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE)
#undef PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE
#define PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE PSA_BITS_TO_BYTES(PSA_VENDOR_ECC_MAX_CURVE_BITS)
#endif
#if defined(PSA_WANT_ALG_FFDH) && \
(PSA_BITS_TO_BYTES(PSA_VENDOR_FFDH_MAX_KEY_BITS) > PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE)
#undef PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE
#define PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE PSA_BITS_TO_BYTES(PSA_VENDOR_FFDH_MAX_KEY_BITS)
#endif
/** The default IV size for a cipher algorithm, in bytes.
*

6
tests/suites/test_suite_psa_crypto.function
View File

@ -1590,7 +1590,11 @@ void import_export(data_t *data,
TEST_LE_U(exported_length,
PSA_EXPORT_KEY_OUTPUT_SIZE(type,
psa_get_key_bits(&got_attributes)));
TEST_LE_U(exported_length, PSA_EXPORT_KEY_PAIR_MAX_SIZE);
if (PSA_KEY_TYPE_IS_KEY_PAIR(type)) {
TEST_LE_U(exported_length, PSA_EXPORT_KEY_PAIR_MAX_SIZE);
} else if (PSA_KEY_TYPE_IS_PUBLIC_KEY(type)) {
TEST_LE_U(exported_length, PSA_EXPORT_PUBLIC_KEY_MAX_SIZE);
}
destroy:
/* Destroy the key */

2
tests/suites/test_suite_psa_crypto_op_fail.function
View File

@ -360,7 +360,7 @@ void key_agreement_fail(int key_type_arg, data_t *key_data,
mbedtls_svc_key_id_t key_id = MBEDTLS_SVC_KEY_ID_INIT;
uint8_t public_key[PSA_EXPORT_PUBLIC_KEY_MAX_SIZE] = { 0 };
size_t public_key_length = SIZE_MAX;
uint8_t output[PSA_SIGNATURE_MAX_SIZE] = { 0 };
uint8_t output[PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE] = { 0 };
size_t length = SIZE_MAX;
psa_key_derivation_operation_t operation = PSA_KEY_DERIVATION_OPERATION_INIT;