feat: add gmssl headers

include/gmssl/sm4.h

@@ -0,0 +1,131 @@
+/*
+ *  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_SM4_H
+#define GMSSL_SM4_H
+
+#include <stdint.h>
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/*
+SM4 Public API
+
+	SM4_KEY_SIZE
+	SM4_BLOCK_SIZE
+
+	SM4_CBC_CTX
+	sm4_cbc_encrypt_init
+	sm4_cbc_encrypt_update
+	sm4_cbc_encrypt_finish
+	sm4_cbc_decrypt_init
+	sm4_cbc_decrypt_update
+	sm4_cbc_decrypt_finish
+
+	SM4_CTR_CTX
+	sm4_ctr_encrypt_init
+	sm4_ctr_encrypt_update
+	sm4_ctr_encrypt_finish
+	sm4_ctr_decrypt_init
+	sm4_ctr_decrypt_update
+	sm4_ctr_decrypt_finish
+*/
+
+#define SM4_KEY_SIZE		(16)
+#define SM4_BLOCK_SIZE		(16)
+#define SM4_NUM_ROUNDS		(32)
+
+
+typedef struct {
+	uint32_t rk[SM4_NUM_ROUNDS];
+} SM4_KEY;
+
+void sm4_set_encrypt_key(SM4_KEY *key, const uint8_t raw_key[SM4_KEY_SIZE]);
+void sm4_set_decrypt_key(SM4_KEY *key, const uint8_t raw_key[SM4_KEY_SIZE]);
+void sm4_encrypt(const SM4_KEY *key, const uint8_t in[SM4_BLOCK_SIZE], uint8_t out[SM4_BLOCK_SIZE]);
+#define sm4_decrypt(key,in,out) sm4_encrypt(key,in,out)
+
+
+void sm4_cbc_encrypt(const SM4_KEY *key, const uint8_t iv[SM4_BLOCK_SIZE],
+	const uint8_t *in, size_t nblocks, uint8_t *out);
+void sm4_cbc_decrypt(const SM4_KEY *key, const uint8_t iv[SM4_BLOCK_SIZE],
+	const uint8_t *in, size_t nblocks, uint8_t *out);
+int sm4_cbc_padding_encrypt(const SM4_KEY *key, const uint8_t iv[SM4_BLOCK_SIZE],
+	const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen);
+int sm4_cbc_padding_decrypt(const SM4_KEY *key, const uint8_t iv[SM4_BLOCK_SIZE],
+	const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen);
+
+
+void sm4_ctr_encrypt(const SM4_KEY *key, uint8_t ctr[SM4_BLOCK_SIZE],
+	const uint8_t *in, size_t inlen, uint8_t *out);
+#define sm4_ctr_decrypt(key,ctr,in,inlen,out) sm4_ctr_encrypt(key,ctr,in,inlen,out)
+
+
+#define SM4_GCM_IV_MIN_SIZE		1
+#define SM4_GCM_IV_MAX_SIZE		((uint64_t)(1 << (64-3)))
+#define SM4_GCM_IV_DEFAULT_BITS		96
+#define SM4_GCM_IV_DEFAULT_SIZE		12
+
+#define SM4_GCM_MIN_AAD_SIZE		0
+#define SM4_GCM_MAX_AAD_SIZE		((uint64_t)(1 << (64-3)))
+
+#define SM4_GCM_MIN_PLAINTEXT_SIZE	0
+#define SM4_GCM_MAX_PLAINTEXT_SIZE	((((uint64_t)1 << 39) - 256) >> 3)
+
+#define SM4_GCM_MAX_TAG_SIZE		16
+
+int sm4_gcm_encrypt(const SM4_KEY *key, const uint8_t *iv, size_t ivlen,
+	const uint8_t *aad, size_t aadlen, const uint8_t *in, size_t inlen,
+	uint8_t *out, size_t taglen, uint8_t *tag);
+int sm4_gcm_decrypt(const SM4_KEY *key, const uint8_t *iv, size_t ivlen,
+	const uint8_t *aad, size_t aadlen, const uint8_t *in, size_t inlen,
+	const uint8_t *tag, size_t taglen, uint8_t *out);
+
+
+typedef struct {
+	SM4_KEY sm4_key;
+	uint8_t iv[SM4_BLOCK_SIZE];
+	uint8_t block[SM4_BLOCK_SIZE];
+	size_t block_nbytes;
+} SM4_CBC_CTX;
+
+int sm4_cbc_encrypt_init(SM4_CBC_CTX *ctx, const uint8_t key[SM4_KEY_SIZE], const uint8_t iv[SM4_BLOCK_SIZE]);
+int sm4_cbc_encrypt_update(SM4_CBC_CTX *ctx, const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen);
+int sm4_cbc_encrypt_finish(SM4_CBC_CTX *ctx, uint8_t *out, size_t *outlen);
+
+int sm4_cbc_decrypt_init(SM4_CBC_CTX *ctx, const uint8_t key[SM4_KEY_SIZE], const uint8_t iv[SM4_BLOCK_SIZE]);
+int sm4_cbc_decrypt_update(SM4_CBC_CTX *ctx, const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen);
+int sm4_cbc_decrypt_finish(SM4_CBC_CTX *ctx, uint8_t *out, size_t *outlen);
+
+
+typedef struct {
+	SM4_KEY sm4_key;
+	uint8_t ctr[SM4_BLOCK_SIZE];
+	uint8_t block[SM4_BLOCK_SIZE];
+	size_t block_nbytes;
+} SM4_CTR_CTX;
+
+int sm4_ctr_encrypt_init(SM4_CTR_CTX *ctx, const uint8_t key[SM4_KEY_SIZE], const uint8_t ctr[SM4_BLOCK_SIZE]);
+int sm4_ctr_encrypt_update(SM4_CTR_CTX *ctx, const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen);
+int sm4_ctr_encrypt_finish(SM4_CTR_CTX *ctx, uint8_t *out, size_t *outlen);
+
+#define sm4_ctr_decrypt_init(ctx,key,ctr) sm4_ctr_encrypt_init(ctx,key,ctr)
+#define sm4_ctr_decrypt_update(ctx,in,inlen,out,outlen) sm4_ctr_encrypt_update(ctx,in,inlen,out,outlen)
+#define sm4_ctr_decrypt_finish(ctx,out,outlen) sm4_ctr_encrypt_finish(ctx,out,outlen)
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif