Provide EVP_MD_CTX_new(), EVP_MD_CTX_free() and EVP_MD_CTX_reset().

1 files changed, 40 insertions, 19 deletions

diff --git a/src/lib/libcrypto/evp/digest.c b/src/lib/libcrypto/evp/digest.c
index 7471c1e822..b69a928ab8 100644
--- a/src/lib/libcrypto/evp/digest.c
+++ b/src/lib/libcrypto/evp/digest.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: digest.c,v 1.28 2017/05/02 03:59:44 deraadt Exp $ */
+/* $OpenBSD: digest.c,v 1.29 2018/02/17 14:55:31 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -122,18 +122,6 @@
 #include <openssl/engine.h>
 #endif
 
-void
-EVP_MD_CTX_init(EVP_MD_CTX *ctx)
-{
-        memset(ctx, 0, sizeof *ctx);
-}
-
-EVP_MD_CTX *
-EVP_MD_CTX_create(void)
-{
-        return calloc(1, sizeof(EVP_MD_CTX));
-}
-
 int
 EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type)
 {
@@ -339,20 +327,53 @@ EVP_Digest(const void *data, size_t count,
         return ret;
 }
 
+EVP_MD_CTX *
+EVP_MD_CTX_new(void)
+{
+        return calloc(1, sizeof(EVP_MD_CTX));
+}
+
+void
+EVP_MD_CTX_free(EVP_MD_CTX *ctx)
+{
+        if (ctx == NULL)
+                return;
+
+        EVP_MD_CTX_cleanup(ctx);
+
+        free(ctx);
+}
+
+void
+EVP_MD_CTX_init(EVP_MD_CTX *ctx)
+{
+        memset(ctx, 0, sizeof(*ctx));
+}
+
+int
+EVP_MD_CTX_reset(EVP_MD_CTX *ctx)
+{
+        return EVP_MD_CTX_cleanup(ctx);
+}
+
+EVP_MD_CTX *
+EVP_MD_CTX_create(void)
+{
+        return EVP_MD_CTX_new();
+}
+
 void
 EVP_MD_CTX_destroy(EVP_MD_CTX *ctx)
 {
-        if (ctx) {
-                EVP_MD_CTX_cleanup(ctx);
-                free(ctx);
-        }
+        EVP_MD_CTX_free(ctx);
 }
 
 /* This call frees resources associated with the context */
 int
 EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx)
 {
-        /* Don't assume ctx->md_data was cleaned in EVP_Digest_Final,
+        /*
+         * Don't assume ctx->md_data was cleaned in EVP_Digest_Final,
          * because sometimes only copies of the context are ever finalised.
          */
         if (ctx->digest && ctx->digest->cleanup &&
@@ -368,7 +389,7 @@ EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx)
                  * functional reference we held for this reason. */
                 ENGINE_finish(ctx->engine);
 #endif
-        memset(ctx, 0, sizeof *ctx);
+        memset(ctx, 0, sizeof(*ctx));
 
         return 1;
 }