commit 9d1635e7429ab105b9c65fc564a2979d9ac7d46a
author Dave Rodgman <dave.rodgman@gmail.com> Sun Jun 04 12:55:15 2023 -0400
committer Dave Rodgman <dave.rodgman@arm.com> Wed Jun 07 16:38:26 2023 +0100
tree da4a4f431c2495148cede5348009dd31a21e9178
parent f1e396c42724896b9d31ac727043da45a35d5e26

Revert not-useful changes to AES-CBC decrypt

Signed-off-by: Dave Rodgman <dave.rodgman@gmail.com>

library/aes.c

diff --git a/library/aes.c b/library/aes.c
index e9395d4..a137fb1 100644
--- a/library/aes.c
+++ b/library/aes.c
@@ -1069,15 +1069,14 @@
 #endif
 
     if (mode == MBEDTLS_AES_DECRYPT) {
-        unsigned char temp2[16];
         while (length > 0) {
             memcpy(temp, input, 16);
-            ret = mbedtls_aes_crypt_ecb(ctx, mode, input, temp2);
+            ret = mbedtls_aes_crypt_ecb(ctx, mode, input, output);
             if (ret != 0) {
                 goto exit;
             }
 
-            mbedtls_xor(output, temp2, iv, 16);
+            mbedtls_xor(output, output, iv, 16);
 
             memcpy(iv, temp, 16);