1 files changed, 38 insertions, 0 deletions
diff --git a/include/crypto/sm4.h b/include/crypto/sm4.h
new file mode 100644
index 00000000..e21ec81c
--- /dev/null
+++ b/include/crypto/sm4.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2017 Ribose Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef OSSL_CRYPTO_SM4_H
+# define OSSL_CRYPTO_SM4_H
+# pragma once
+
+# include <openssl/opensslconf.h>
+# include <openssl/e_os2.h>
+
+# ifdef OPENSSL_NO_SM4
+#  error SM4 is disabled.
+# endif
+
+# define SM4_ENCRYPT     1
+# define SM4_DECRYPT     0
+
+# define SM4_BLOCK_SIZE    16
+# define SM4_KEY_SCHEDULE  32
+
+typedef struct SM4_KEY_st {
+    uint32_t rk[SM4_KEY_SCHEDULE];
+} SM4_KEY;
+
+int ossl_sm4_set_key(const uint8_t *key, SM4_KEY *ks);
+
+void ossl_sm4_encrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *ks);
+
+void ossl_sm4_decrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *ks);
+
+#endif