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110 lines
3.5 KiB
C
Executable File
110 lines
3.5 KiB
C
Executable File
/* ====================================================================
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* Copyright (c) 2014 - 2018 The GmSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the GmSSL Project.
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* (http://gmssl.org/)"
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*
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* 4. The name "GmSSL Project" must not be used to endorse or promote
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* products derived from this software without prior written
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* permission. For written permission, please contact
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* guanzhi1980@gmail.com.
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*
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* 5. Products derived from this software may not be called "GmSSL"
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* nor may "GmSSL" appear in their names without prior written
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* permission of the GmSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the GmSSL Project
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* (http://gmssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE GmSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*/
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/*
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* This sm4 demo use the native sm3_init/update/final APIs
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <libgen.h>
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#include <openssl/err.h>
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#include <openssl/rand.h>
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#include <openssl/sms4.h>
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#include <openssl/is_gmssl.h>
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static void print_buf(const char *s, const unsigned char *buf, size_t buflen)
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{
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int i;
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printf("%s = ", s);
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for (i = 0; i < buflen; i++) {
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printf("%02X", buf[i]);
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}
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printf("\n");
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}
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int main(int argc, char **argv)
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{
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sms4_key_t sms4;
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unsigned char key[SMS4_KEY_LENGTH] = {0};
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unsigned char block[SMS4_BLOCK_SIZE] = {0};
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int i;
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#if USE_RANDOM
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if (!RAND_bytes(key, sizeof(key))
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|| !RAND_bytes(block, sizeof(block))) {
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ERR_print_errors_fp(stderr);
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return -1;
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}
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#endif
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print_buf("key", key, sizeof(key));
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print_buf("plaintext block", block, sizeof(block));
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/* expand key for encryption */
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sms4_set_encrypt_key(&sms4, key);
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/* encrypt a block */
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sms4_encrypt(block, block, &sms4);
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print_buf("ciphertext block", block, sizeof(block));
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/* expand key for decryption */
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sms4_set_decrypt_key(&sms4, key);
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/* decrypt a block */
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sms4_decrypt(block, block, &sms4);
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print_buf("decrypted block", block, sizeof(block));
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return 0;
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}
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