sys/psa_crypto: Implement PSA_MAC_MAX_SIZE()

Wer-Wolf · Wer-Wolf · commit fe56b7d19ca0 · 2024-09-17T21:37:10.000+02:00
This support macro is necessary for full MAC support.

Signed-off-by: Armin Wolf &lt;W_Armin@gmx.de&gt;
diff --git a/sys/include/psa_crypto/psa/crypto_sizes.h b/sys/include/psa_crypto/psa/crypto_sizes.h
@@ -456,7 +456,30 @@ extern "C" {
  *
  *          See also @ref PSA_MAC_LENGTH().
  */
-#define PSA_MAC_MAX_SIZE (PSA_HASH_MAX_SIZE)
+#if (IS_USED(MODULE_PSA_MAC_HMAC_SHA_512) || \
+     IS_USED(MODULE_PSA_MAC_HMAC_SHA3_512))
+#define PSA_MAC_MAX_SIZE (PSA_HASH_LENGTH(PSA_ALG_SHA3_512))    /* 64 */
+#elif (IS_USED(MODULE_PSA_MAC_HMAC_SHA_384) || \
+       IS_USED(MODULE_PSA_MAC_HMAC_SHA3_384))
+#define PSA_MAC_MAX_SIZE (PSA_HASH_LENGTH(PSA_ALG_SHA3_384))    /* 48 */
+#elif (IS_USED(MODULE_PSA_MAC_HMAC_SHA_256) || \
+       IS_USED(MODULE_PSA_MAC_HMAC_SHA_512_256) || \
+       IS_USED(MODULE_PSA_MAC_HMAC_SHA3_256))
+#define PSA_MAC_MAX_SIZE (PSA_HASH_LENGTH(PSA_ALG_SHA3_256))    /* 32 */
+#elif (IS_USED(MODULE_PSA_MAC_HMAC_SHA_224) || \
+       IS_USED(MODULE_PSA_MAC_HMAC_SHA_512_224) || \
+       IS_USED(MODULE_PSA_MAC_HMAC_SHA3_224))
+#define PSA_MAC_MAX_SIZE (PSA_HASH_LENGTH(PSA_ALG_SHA3_224))    /* 28 */
+#elif (IS_USED(MODULE_PSA_MAC_HMAC_RIPEMD160) || \
+       IS_USED(MODULE_PSA_MAC_HMAC_SHA_1))
+#define PSA_MAC_MAX_SIZE (PSA_HASH_LENGTH(PSA_ALG_SHA_1))       /* 20 */
+#elif (IS_USED(MODULE_PSA_MAC_HMAC_MD2) || \
+       IS_USED(MODULE_PSA_MAC_HMAC_MD4) || \
+       IS_USED(MODULE_PSA_MAC_HMAC_MD5))
+#define PSA_MAC_MAX_SIZE (PSA_HASH_LENGTH(PSA_ALG_MD5))         /* 16 */
+#else
+#define PSA_MAC_MAX_SIZE 0
+#endif
 
 /**
  * @brief   The block size of a block cipher.
