1 files changed, 53 insertions, 0 deletions
diff --git a/src/util/hash/builtin.c b/src/util/hash/builtin.c
new file mode 100644
index 000000000..cc4aa58fe
--- /dev/null
+++ b/src/util/hash/builtin.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+
+#include "builtin.h"
+
+int git_hash_sha256_global_init(void)
+{
+	return 0;
+}
+
+int git_hash_sha256_ctx_init(git_hash_sha256_ctx *ctx)
+{
+	return git_hash_sha256_init(ctx);
+}
+
+void git_hash_sha256_ctx_cleanup(git_hash_sha256_ctx *ctx)
+{
+	GIT_UNUSED(ctx);
+}
+
+int git_hash_sha256_init(git_hash_sha256_ctx *ctx)
+{
+	GIT_ASSERT_ARG(ctx);
+	if (SHA256Reset(&ctx->c)) {
+		git_error_set(GIT_ERROR_SHA, "SHA256 error");
+		return -1;
+	}
+	return 0;
+}
+
+int git_hash_sha256_update(git_hash_sha256_ctx *ctx, const void *data, size_t len)
+{
+	GIT_ASSERT_ARG(ctx);
+	if (SHA256Input(&ctx->c, data, len)) {
+		git_error_set(GIT_ERROR_SHA, "SHA256 error");
+		return -1;
+	}
+	return 0;
+}
+
+int git_hash_sha256_final(unsigned char *out, git_hash_sha256_ctx *ctx)
+{
+	GIT_ASSERT_ARG(ctx);
+	if (SHA256Result(&ctx->c, out)) {
+		git_error_set(GIT_ERROR_SHA, "SHA256 error");
+		return -1;
+	}
+	return 0;
+}