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Reduce code size in mbedtls_cipher_validate_values

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman 2023-10-31 17:54:58 +00:00
parent 6d2c1b3748
commit 3e5cc175e0
1 changed files with 57 additions and 0 deletions
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57
library/psa_crypto_cipher.c
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@ -42,6 +42,63 @@ static psa_status_t mbedtls_cipher_validate_values(
psa_algorithm_t alg, psa_algorithm_t alg,
psa_key_type_t key_type) psa_key_type_t key_type)
{ {
/* 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
if (alg == PSA_ALG_STREAM_CIPHER || if (alg == PSA_ALG_STREAM_CIPHER ||
alg == PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CHACHA20_POLY1305, 0)) { alg == PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CHACHA20_POLY1305, 0)) {
if (key_type == PSA_KEY_TYPE_CHACHA20) { if (key_type == PSA_KEY_TYPE_CHACHA20) {