commit e78775eed2be169787199798189ad1e965f8c0a7
author Andrzej Kurek <andrzej.kurek@arm.com> Thu Jul 02 10:57:00 2020 -0400
committer Andrzej Kurek <andrzej.kurek@arm.com> Sat Jul 18 05:21:32 2020 -0400
tree 67c8791fae205e4317deecfe4044cd15a28b81ff
parent 4b700a3db35405dc28a6aab432a6d9be23435f1e

Use a fake random key in AES calculations

Create an additional field in the AES context to store a randomized fake key.
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 6990be0..055107a 100644
--- a/include/mbedtls/aes.h
+++ b/include/mbedtls/aes.h
@@ -87,6 +87,7 @@
 {
     int nr;                     /*!< The number of rounds. */
     uint32_t *rk;               /*!< AES round keys. */
+    uint32_t frk[8];            /*!< Fake AES round keys. */
 #if defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH) && !defined(MBEDTLS_PADLOCK_C)
     uint32_t buf[44];           /*!< Unaligned data buffer */
 #else /* MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH */