feat: add gmssl headers

include/gmssl/md5.h

@@ -0,0 +1,48 @@
+/*
+ *  Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the License); you may
+ *  not use this file except in compliance with the License.
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+
+
+#ifndef GMSSL_MD5_H
+#define GMSSL_MD5_H
+
+
+#include <string.h>
+#include <stdint.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#define MD5_IS_BIG_ENDIAN	0
+
+#define MD5_DIGEST_SIZE		16
+#define MD5_BLOCK_SIZE		64
+#define MD5_STATE_WORDS		(MD5_BLOCK_SIZE/sizeof(uint32_t))
+
+typedef struct {
+	uint32_t state[MD5_STATE_WORDS];
+	uint64_t nblocks;
+	uint8_t block[MD5_BLOCK_SIZE];
+	size_t num;
+} MD5_CTX;
+
+
+void md5_init(MD5_CTX *ctx);
+void md5_update(MD5_CTX *ctx, const uint8_t *data, size_t datalen);
+void md5_finish(MD5_CTX *ctx, uint8_t dgst[MD5_DIGEST_SIZE]);
+void md5_digest(const uint8_t *data, size_t datalen, uint8_t dgst[MD5_DIGEST_SIZE]);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif