commit 9539f831b2783c6958e16b302c6ad4b9e795f29a
author Andrzej Kurek <andrzej.kurek@arm.com> Mon Aug 10 15:58:13 2020 -0400
committer Andrzej Kurek <andrzej.kurek@arm.com> Mon Aug 10 20:46:48 2020 -0400
tree 8598fd05f557d9af476d7cb17953960495df9199
parent a00c3eeacac96baed10cc452fe2c0ce492e080ea

Swap out CRC calculation in AES in favour of a simple hash

XOR the key bytes upon setting and re-check hash during each use.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>

include/mbedtls/aes.h

diff --git a/include/mbedtls/aes.h b/include/mbedtls/aes.h
index 5fb020f..b410b5a 100644
--- a/include/mbedtls/aes.h
+++ b/include/mbedtls/aes.h
@@ -91,7 +91,7 @@
     uint32_t frk[8];            /*!< Fake AES round keys. */
 #endif
 #if defined(MBEDTLS_VALIDATE_AES_KEYS_INTEGRITY)
-    uint16_t crc;               /*!< CRC-16 of the set key */
+    uint32_t hash;               /*!< hash of the set key */
 #endif
 #if defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH) && !defined(MBEDTLS_PADLOCK_C)
     uint32_t buf[44];           /*!< Unaligned data buffer */