1 files changed, 100 insertions, 0 deletions
diff --git a/deps/openssl/openssl/crypto/evp/e_sm4.c b/deps/openssl/openssl/crypto/evp/e_sm4.c
new file mode 100644
index 0000000000..79deb65636
--- /dev/null
+++ b/deps/openssl/openssl/crypto/evp/e_sm4.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2017 Ribose Inc. All Rights Reserved.
+ * Ported from Ribose contributions from Botan.
+ *
+ * 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
+ */
+
+#include "internal/cryptlib.h"
+#ifndef OPENSSL_NO_SM4
+# include <openssl/evp.h>
+# include <openssl/modes.h>
+# include "internal/sm4.h"
+# include "internal/evp_int.h"
+
+typedef struct {
+    SM4_KEY ks;
+} EVP_SM4_KEY;
+
+static int sm4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+                        const unsigned char *iv, int enc)
+{
+    SM4_set_key(key, EVP_CIPHER_CTX_get_cipher_data(ctx));
+    return 1;
+}
+
+static void sm4_cbc_encrypt(const unsigned char *in, unsigned char *out,
+                            size_t len, const SM4_KEY *key,
+                            unsigned char *ivec, const int enc)
+{
+    if (enc)
+        CRYPTO_cbc128_encrypt(in, out, len, key, ivec,
+                              (block128_f)SM4_encrypt);
+    else
+        CRYPTO_cbc128_decrypt(in, out, len, key, ivec,
+                              (block128_f)SM4_decrypt);
+}
+
+static void sm4_cfb128_encrypt(const unsigned char *in, unsigned char *out,
+                               size_t length, const SM4_KEY *key,
+                               unsigned char *ivec, int *num, const int enc)
+{
+    CRYPTO_cfb128_encrypt(in, out, length, key, ivec, num, enc,
+                          (block128_f)SM4_encrypt);
+}
+
+static void sm4_ecb_encrypt(const unsigned char *in, unsigned char *out,
+                            const SM4_KEY *key, const int enc)
+{
+    if (enc)
+        SM4_encrypt(in, out, key);
+    else
+        SM4_decrypt(in, out, key);
+}
+
+static void sm4_ofb128_encrypt(const unsigned char *in, unsigned char *out,
+                               size_t length, const SM4_KEY *key,
+                               unsigned char *ivec, int *num)
+{
+    CRYPTO_ofb128_encrypt(in, out, length, key, ivec, num,
+                          (block128_f)SM4_encrypt);
+}
+
+IMPLEMENT_BLOCK_CIPHER(sm4, ks, sm4, EVP_SM4_KEY, NID_sm4,
+                       16, 16, 16, 128, EVP_CIPH_FLAG_DEFAULT_ASN1,
+                       sm4_init_key, 0, 0, 0, 0)
+
+static int sm4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+                          const unsigned char *in, size_t len)
+{
+    unsigned int num = EVP_CIPHER_CTX_num(ctx);
+    EVP_SM4_KEY *dat = EVP_C_DATA(EVP_SM4_KEY, ctx);
+
+    CRYPTO_ctr128_encrypt(in, out, len, &dat->ks,
+                          EVP_CIPHER_CTX_iv_noconst(ctx),
+                          EVP_CIPHER_CTX_buf_noconst(ctx), &num,
+                          (block128_f)SM4_encrypt);
+    EVP_CIPHER_CTX_set_num(ctx, num);
+    return 1;
+}
+
+static const EVP_CIPHER sm4_ctr_mode = {
+    NID_sm4_ctr, 1, 16, 16,
+    EVP_CIPH_CTR_MODE,
+    sm4_init_key,
+    sm4_ctr_cipher,
+    NULL,
+    sizeof(EVP_SM4_KEY),
+    NULL, NULL, NULL, NULL
+};
+
+const EVP_CIPHER *EVP_sm4_ctr(void)
+{
+    return &sm4_ctr_mode;
+}
+
+#endif