SM4: Add SM4 block cipher to EVP

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/4552)

1 files changed, 37 insertions, 0 deletions

diff --git a/crypto/include/internal/sm4.h b/crypto/include/internal/sm4.h
new file mode 100644
index 0000000000..f1f157ef53
--- /dev/null
+++ b/crypto/include/internal/sm4.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2017 Ribose Inc. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (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 HEADER_SM4_H
+# define HEADER_SM4_H
+
+# 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 SM4_set_key(const uint8_t *key, SM4_KEY *ks);
+
+void SM4_encrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *ks);
+
+void SM4_decrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *ks);
+
+#endif