1 files changed, 51 insertions, 0 deletions

diff --git a/src/lib/libcrypto/sm4/sm4.h b/src/lib/libcrypto/sm4/sm4.h
new file mode 100644
index 0000000000..5931ac714b
--- /dev/null
+++ b/src/lib/libcrypto/sm4/sm4.h
@@ -0,0 +1,51 @@
+/*      $OpenBSD: sm4.h,v 1.1 2019/03/17 17:42:37 tb Exp $      */
+/*
+ * Copyright (c) 2017, 2019 Ribose Inc
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef HEADER_SM4_H
+#define HEADER_SM4_H
+
+#include <stdint.h>
+
+#include <openssl/opensslconf.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#ifdef OPENSSL_NO_SM4
+#error SM4 is disabled.
+#endif
+
+#define SM4_DECRYPT     0
+#define SM4_ENCRYPT     1
+
+#define SM4_BLOCK_SIZE    16
+#define SM4_KEY_SCHEDULE  32
+
+typedef struct sm4_key_st {
+        unsigned char opaque[128];
+} SM4_KEY;
+
+int SM4_set_key(const uint8_t *key, SM4_KEY *ks);
+void SM4_decrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *ks);
+void SM4_encrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *ks);
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif /* HEADER_SM4_H */