From b6d83057c7a14f958dffbc418ed799cdf779bf5a Mon Sep 17 00:00:00 2001
From: zhengxiaoxiao <zhengxiaoxiao2@huawei.com>
Date: Fri, 29 Jul 2022 15:25:39 +0800
Subject: [PATCH] Clear AESWRAP scratch area immediately after use
 
* cipher/cipher-aeswrap.c (_gcry_cipher_aeswrap_decrypt): Call
wipememory.
 
Reference: https://github.com/gpg/libgcrypt/commit/69e2e498f6a14cfa731cb5718bdb64f440f1c829
Conflict: NA
---
 cipher/cipher-aeswrap.c | 1 +
 1 file changed, 1 insertion(+)
 
diff --git a/cipher/cipher-aeswrap.c b/cipher/cipher-aeswrap.c
index c182657..4240751 100644
--- a/cipher/cipher-aeswrap.c
+++ b/cipher/cipher-aeswrap.c
@@ -187,6 +187,7 @@ _gcry_cipher_aeswrap_decrypt (gcry_cipher_hd_t c,
           memcpy (r+(i-1)*8, b+8, 8);
         }
    }
+  wipememory (b, 16);  /* Clear scratch area.  */
 
   /* If an IV has been set we compare against this Alternative Initial
      Value; if it has not been set we compare against the standard IV.  */
-- 
2.27.0