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-rw-r--r--openssl/crypto/bn/bn_lib.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/openssl/crypto/bn/bn_lib.c b/openssl/crypto/bn/bn_lib.c
index 5461e6ee7..d5a211e28 100644
--- a/openssl/crypto/bn/bn_lib.c
+++ b/openssl/crypto/bn/bn_lib.c
@@ -320,6 +320,15 @@ static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
BNerr(BN_F_BN_EXPAND_INTERNAL,ERR_R_MALLOC_FAILURE);
return(NULL);
}
+#ifdef PURIFY
+ /* Valgrind complains in BN_consttime_swap because we process the whole
+ * array even if it's not initialised yet. This doesn't matter in that
+ * function - what's important is constant time operation (we're not
+ * actually going to use the data)
+ */
+ memset(a, 0, sizeof(BN_ULONG)*words);
+#endif
+
#if 1
B=b->d;
/* Check if the previous number needs to be copied */