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-rw-r--r--crypto/evp/digest.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/crypto/evp/digest.c b/crypto/evp/digest.c
index f78dab767865..6693f270b694 100644
--- a/crypto/evp/digest.c
+++ b/crypto/evp/digest.c
@@ -1,5 +1,5 @@
/*
- * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@@ -150,6 +150,9 @@ int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl)
int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t count)
{
+ if (count == 0)
+ return 1;
+
return ctx->update(ctx, data, count);
}