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Merge pull request #8444 from Mbed-TLS/cvv-code-size

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code size for mbedtls_cipher_validate_values
This commit is contained in:
Dave Rodgman
2023-11-06 12:50:37 +00:00
committed by GitHub
parent e03270f2e0 e91d7c5d68
commit 4b67ac8adf
2 changed files with 111 additions and 41 deletions
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124
library/psa_crypto_cipher.c
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@@ -30,45 +30,97 @@ static psa_status_t mbedtls_cipher_validate_values(
psa_algorithm_t alg,
psa_key_type_t key_type)
{
switch (alg) {
case PSA_ALG_STREAM_CIPHER:
case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CHACHA20_POLY1305, 0):
if (key_type != PSA_KEY_TYPE_CHACHA20) {
return PSA_ERROR_NOT_SUPPORTED;
}
break;
/* Reduce code size - hinting to the compiler about what it can assume allows the compiler to
eliminate bits of the logic below. */
#if !defined(PSA_WANT_KEY_TYPE_AES)
MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_AES);
#endif
#if !defined(PSA_WANT_KEY_TYPE_ARIA)
MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_ARIA);
#endif
#if !defined(PSA_WANT_KEY_TYPE_CAMELLIA)
MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_CAMELLIA);
#endif
#if !defined(PSA_WANT_KEY_TYPE_CHACHA20)
MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_CHACHA20);
#endif
#if !defined(PSA_WANT_KEY_TYPE_DES)
MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_DES);
#endif
#if !defined(PSA_WANT_ALG_CCM)
MBEDTLS_ASSUME(alg != PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, 0));
#endif
#if !defined(PSA_WANT_ALG_GCM)
MBEDTLS_ASSUME(alg != PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM, 0));
#endif
#if !defined(PSA_WANT_ALG_STREAM_CIPHER)
MBEDTLS_ASSUME(alg != PSA_ALG_STREAM_CIPHER);
#endif
#if !defined(PSA_WANT_ALG_CHACHA20_POLY1305)
MBEDTLS_ASSUME(alg != PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CHACHA20_POLY1305, 0));
#endif
#if !defined(PSA_WANT_ALG_CCM_STAR_NO_TAG)
MBEDTLS_ASSUME(alg != PSA_ALG_CCM_STAR_NO_TAG);
#endif
#if !defined(PSA_WANT_ALG_CTR)
MBEDTLS_ASSUME(alg != PSA_ALG_CTR);
#endif
#if !defined(PSA_WANT_ALG_CFB)
MBEDTLS_ASSUME(alg != PSA_ALG_CFB);
#endif
#if !defined(PSA_WANT_ALG_OFB)
MBEDTLS_ASSUME(alg != PSA_ALG_OFB);
#endif
#if !defined(PSA_WANT_ALG_XTS)
MBEDTLS_ASSUME(alg != PSA_ALG_XTS);
#endif
#if !defined(PSA_WANT_ALG_ECB_NO_PADDING)
MBEDTLS_ASSUME(alg != PSA_ALG_ECB_NO_PADDING);
#endif
#if !defined(PSA_WANT_ALG_CBC_NO_PADDING)
MBEDTLS_ASSUME(alg != PSA_ALG_CBC_NO_PADDING);
#endif
#if !defined(PSA_WANT_ALG_CBC_PKCS7)
MBEDTLS_ASSUME(alg != PSA_ALG_CBC_PKCS7);
#endif
#if !defined(PSA_WANT_ALG_CMAC)
MBEDTLS_ASSUME(alg != PSA_ALG_CMAC);
#endif
case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, 0):
case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM, 0):
case PSA_ALG_CCM_STAR_NO_TAG:
if ((key_type != PSA_KEY_TYPE_AES) &&
(key_type != PSA_KEY_TYPE_ARIA) &&
(key_type != PSA_KEY_TYPE_CAMELLIA)) {
return PSA_ERROR_NOT_SUPPORTED;
}
break;
case PSA_ALG_CTR:
case PSA_ALG_CFB:
case PSA_ALG_OFB:
case PSA_ALG_XTS:
case PSA_ALG_ECB_NO_PADDING:
case PSA_ALG_CBC_NO_PADDING:
case PSA_ALG_CBC_PKCS7:
case PSA_ALG_CMAC:
if ((key_type != PSA_KEY_TYPE_AES) &&
(key_type != PSA_KEY_TYPE_ARIA) &&
(key_type != PSA_KEY_TYPE_DES) &&
(key_type != PSA_KEY_TYPE_CAMELLIA)) {
return PSA_ERROR_NOT_SUPPORTED;
}
break;
default:
return PSA_ERROR_NOT_SUPPORTED;
if (alg == PSA_ALG_STREAM_CIPHER ||
alg == PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CHACHA20_POLY1305, 0)) {
if (key_type == PSA_KEY_TYPE_CHACHA20) {
return PSA_SUCCESS;
}
}
return PSA_SUCCESS;
if (alg == PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, 0) ||
alg == PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM, 0) ||
alg == PSA_ALG_CCM_STAR_NO_TAG) {
if (key_type == PSA_KEY_TYPE_AES ||
key_type == PSA_KEY_TYPE_ARIA ||
key_type == PSA_KEY_TYPE_CAMELLIA) {
return PSA_SUCCESS;
}
}
if (alg == PSA_ALG_CTR ||
alg == PSA_ALG_CFB ||
alg == PSA_ALG_OFB ||
alg == PSA_ALG_XTS ||
alg == PSA_ALG_ECB_NO_PADDING ||
alg == PSA_ALG_CBC_NO_PADDING ||
alg == PSA_ALG_CBC_PKCS7 ||
alg == PSA_ALG_CMAC) {
if (key_type == PSA_KEY_TYPE_AES ||
key_type == PSA_KEY_TYPE_ARIA ||
key_type == PSA_KEY_TYPE_DES ||
key_type == PSA_KEY_TYPE_CAMELLIA) {
return PSA_SUCCESS;
}
}
return PSA_ERROR_NOT_SUPPORTED;
}
psa_status_t mbedtls_cipher_values_from_psa(