mirror of
https://github.com/guanzhi/GmSSL.git
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349 lines
11 KiB
C
349 lines
11 KiB
C
/*
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* Copyright 2014-2023 The GmSSL Project. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <gmssl/mem.h>
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#include <gmssl/sm4.h>
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#include <gmssl/hex.h>
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#include <gmssl/aead.h>
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#include <gmssl/error.h>
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#define SM4_MODE_CBC 1
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#define SM4_MODE_CTR 2
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#define SM4_MODE_GCM 3
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#define SM4_MODE_CBC_SM3_HMAC 4
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#define SM4_MODE_CTR_SM3_HMAC 5
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static const char *usage = "(-cbc|-ctr|-gcm|-cbc_sm3_hmac|-ctr_sm3_hmac) {-encrypt|-decrypt} -key hex -iv hex [-in file] [-out file]";
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static const char *options =
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"Options\n"
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"\n"
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" Modes\n"
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"\n"
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" -cbc CBC mode with padding, need 16-byte key and 16-byte iv\n"
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" -ctr CTR mode, need 16-byte key and 16-byte iv\n"
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" -gcm GCM mode, need 16-byte key and any iv length\n"
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" -cbc_sm3_hmac CBC mode with padding and HMAC-SM3 (encrypt-then-mac), need 48-byte key and 16-byte iv\n"
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" -ctr_sm3_hmac CTR mode with HMAC-SM3 (entrypt-then-mac), need 48-byte key and 16-byte iv\n"
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"\n"
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" -encrypt Encrypt\n"
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" -decrypt Decrypt\n"
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" -key hex Symmetric key in HEX format\n"
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" -iv hex IV in HEX format\n"
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" -in file | stdin Input data\n"
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" -out file | stdout Output data\n"
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"\n"
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"Examples"
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"\n"
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" echo \"hello\" | gmssl sm4 -gcm -encrypt -key 11223344556677881122334455667788 -iv 112233445566778811223344 -out ciphertext.bin\n"
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" gmssl sm4 -gcm -decrypt -key 11223344556677881122334455667788 -iv 112233445566778811223344 -in ciphertext.bin\n"
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"\n"
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" echo \"hello\" | gmssl sm4 -cbc_sm3_hmac -encrypt \\\n"
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" -key 112233445566778811223344556677881122334455667788112233445566778811223344556677881122334455667788 \\\n"
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" -iv 11223344556677881122334455667788 -out ciphertext.bin\n"
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" gmssl sm4 -cbc_sm3_hmac -decrypt \\\n"
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" -key 112233445566778811223344556677881122334455667788112233445566778811223344556677881122334455667788 \\\n"
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" -iv 11223344556677881122334455667788 -in ciphertext.bin\n"
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"\n";
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int sm4_main(int argc, char **argv)
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{
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int ret = 1;
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char *prog = argv[0];
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char *keyhex = NULL;
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char *ivhex = NULL;
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char *infile = NULL;
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char *outfile = NULL;
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uint8_t key[48];
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uint8_t iv[SM4_GCM_MAX_IV_SIZE];
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size_t keylen = sizeof(key);
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size_t ivlen = sizeof(iv);
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FILE *infp = stdin;
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FILE *outfp = stdout;
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int mode = 0;
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int enc = -1;
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int rv;
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union {
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SM4_CBC_CTX cbc;
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SM4_CTR_CTX ctr;
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SM4_CBC_SM3_HMAC_CTX cbc_sm3_hmac;
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SM4_CTR_SM3_HMAC_CTX ctr_sm3_hmac;
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SM4_GCM_CTX gcm;
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} sm4_ctx;
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uint8_t inbuf[4096];
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size_t inlen;
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uint8_t outbuf[4196];
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size_t outlen;
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argc--;
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argv++;
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if (argc < 1) {
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fprintf(stderr, "usage: %s %s\n", prog, usage);
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return 1;
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}
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while (argc > 0) {
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if (!strcmp(*argv, "-help")) {
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printf("usage: %s %s\n", prog, usage);
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printf("%s\n", options);
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ret = 0;
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goto end;
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} else if (!strcmp(*argv, "-key")) {
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if (--argc < 1) goto bad;
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keyhex = *(++argv);
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if (strlen(keyhex) > sizeof(key) * 2) {
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fprintf(stderr, "%s: invalid key length\n", prog);
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goto end;
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}
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if (hex_to_bytes(keyhex, strlen(keyhex), key, &keylen) != 1) {
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fprintf(stderr, "%s: invalid key hex digits\n", prog);
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goto end;
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}
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} else if (!strcmp(*argv, "-iv")) {
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if (--argc < 1) goto bad;
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ivhex = *(++argv);
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if (strlen(ivhex) > sizeof(iv) * 2) {
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fprintf(stderr, "%s: IV length too long\n", prog);
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goto end;
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}
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if (hex_to_bytes(ivhex, strlen(ivhex), iv, &ivlen) != 1) {
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fprintf(stderr, "%s: invalid IV hex digits\n", prog);
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goto end;
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}
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} else if (!strcmp(*argv, "-encrypt")) {
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enc = 1;
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} else if (!strcmp(*argv, "-decrypt")) {
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enc = 0;
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} else if (!strcmp(*argv, "-cbc")) {
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if (mode) goto bad;
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mode = SM4_MODE_CBC;
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} else if (!strcmp(*argv, "-ctr")) {
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if (mode) goto bad;
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mode = SM4_MODE_CTR;
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} else if (!strcmp(*argv, "-cbc_sm3_hmac")) {
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if (mode) goto bad;
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mode = SM4_MODE_CBC_SM3_HMAC;
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} else if (!strcmp(*argv, "-ctr_sm3_hmac")) {
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if (mode) goto bad;
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mode = SM4_MODE_CTR_SM3_HMAC;
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} else if (!strcmp(*argv, "-gcm")) {
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if (mode) goto bad;
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mode = SM4_MODE_GCM;
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} else if (!strcmp(*argv, "-in")) {
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if (--argc < 1) goto bad;
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infile = *(++argv);
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if (!(infp = fopen(infile, "rb"))) {
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fprintf(stderr, "%s: open '%s' failure : %s\n", prog, infile, strerror(errno));
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goto end;
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}
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} else if (!strcmp(*argv, "-out")) {
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if (--argc < 1) goto bad;
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outfile = *(++argv);
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if (!(outfp = fopen(outfile, "wb"))) {
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fprintf(stderr, "%s: open '%s' failure : %s\n", prog, outfile, strerror(errno));
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goto end;
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}
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} else {
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fprintf(stderr, "%s: illegal option `%s`\n", prog, *argv);
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goto end;
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bad:
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fprintf(stderr, "%s: `%s` option value missing\n", prog, *argv);
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goto end;
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}
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argc--;
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argv++;
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}
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if (!mode) {
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fprintf(stderr, "%s: mode not assigned, `-cbc`, `-ctr`, `-gcm`, `-cbc_sm3_hmac` or `-ctr_sm3_hmac` required\n", prog);
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goto end;
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}
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if (!keyhex) {
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fprintf(stderr, "%s: option `-key` missing\n", prog);
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goto end;
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}
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if (!ivhex) {
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fprintf(stderr, "%s: option `-iv` missing\n", prog);
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goto end;
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}
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switch (mode) {
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case SM4_MODE_CTR:
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case SM4_MODE_CBC:
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case SM4_MODE_GCM:
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if (keylen != 16) {
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fprintf(stderr, "%s: invalid key length, should be 32 hex digits\n", prog);
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goto end;
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}
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break;
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case SM4_MODE_CBC_SM3_HMAC:
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case SM4_MODE_CTR_SM3_HMAC:
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if (keylen != 48) {
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fprintf(stderr, "%s: invalid key length, should be 96 hex digits\n", prog);
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goto end;
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}
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break;
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}
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switch (mode) {
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case SM4_MODE_CTR:
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case SM4_MODE_CBC:
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case SM4_MODE_CBC_SM3_HMAC:
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case SM4_MODE_CTR_SM3_HMAC:
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if (ivlen != 16) {
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fprintf(stderr, "%s: invalid IV length, should be 32 hex digits\n", prog);
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goto end;
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}
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break;
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}
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if (mode == SM4_MODE_CTR) {
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if (sm4_ctr_encrypt_init(&sm4_ctx.ctr, key, iv) != 1) {
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error_print();
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goto end;
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}
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while ((inlen = fread(inbuf, 1, sizeof(inbuf), infp)) > 0) {
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if (sm4_ctr_encrypt_update(&sm4_ctx.ctr, inbuf, inlen, outbuf, &outlen) != 1) {
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error_print();
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goto end;
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}
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if (fwrite(outbuf, 1, outlen, outfp) != outlen) {
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fprintf(stderr, "%s: output failure : %s\n", prog, strerror(errno));
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goto end;
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}
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}
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if (sm4_ctr_encrypt_finish(&sm4_ctx.ctr, outbuf, &outlen) != 1) {
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error_print();
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goto end;
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}
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if (fwrite(outbuf, 1, outlen, outfp) != outlen) {
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fprintf(stderr, "%s: output failure : %s\n", prog, strerror(errno));
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goto end;
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}
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ret = 0;
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goto end;
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}
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if (enc < 0) {
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fprintf(stderr, "%s: option -encrypt or -decrypt should be set\n", prog);
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goto end;
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}
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if (enc) {
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switch (mode) {
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case SM4_MODE_CBC: rv = sm4_cbc_encrypt_init(&sm4_ctx.cbc, key, iv); break;
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case SM4_MODE_GCM: rv = sm4_gcm_encrypt_init(&sm4_ctx.gcm, key, keylen, iv, ivlen, NULL, 0, GHASH_SIZE); break;
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case SM4_MODE_CBC_SM3_HMAC: rv = sm4_cbc_sm3_hmac_encrypt_init(&sm4_ctx.cbc_sm3_hmac, key, keylen, iv, ivlen, NULL, 0); break;
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case SM4_MODE_CTR_SM3_HMAC: rv = sm4_ctr_sm3_hmac_encrypt_init(&sm4_ctx.ctr_sm3_hmac, key, keylen, iv, ivlen, NULL, 0); break;
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}
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if (rv != 1) {
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error_print();
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goto end;
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}
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while ((inlen = fread(inbuf, 1, sizeof(inbuf), infp)) > 0) {
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switch (mode) {
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case SM4_MODE_CBC: rv = sm4_cbc_encrypt_update(&sm4_ctx.cbc, inbuf, inlen, outbuf, &outlen); break;
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case SM4_MODE_GCM: rv = sm4_gcm_encrypt_update(&sm4_ctx.gcm, inbuf, inlen, outbuf, &outlen); break;
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case SM4_MODE_CBC_SM3_HMAC: rv = sm4_cbc_sm3_hmac_encrypt_update(&sm4_ctx.cbc_sm3_hmac, inbuf, inlen, outbuf, &outlen); break;
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case SM4_MODE_CTR_SM3_HMAC: rv = sm4_ctr_sm3_hmac_encrypt_update(&sm4_ctx.ctr_sm3_hmac, inbuf, inlen, outbuf, &outlen); break;
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}
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if (rv != 1) {
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error_print();
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goto end;
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}
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if (fwrite(outbuf, 1, outlen, outfp) != outlen) {
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fprintf(stderr, "%s: output failure : %s\n", prog, strerror(errno));
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goto end;
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}
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}
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switch (mode) {
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case SM4_MODE_CBC: rv = sm4_cbc_encrypt_finish(&sm4_ctx.cbc, outbuf, &outlen); break;
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case SM4_MODE_GCM: rv = sm4_gcm_encrypt_finish(&sm4_ctx.gcm, outbuf, &outlen); break;
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case SM4_MODE_CBC_SM3_HMAC: rv = sm4_cbc_sm3_hmac_encrypt_finish(&sm4_ctx.cbc_sm3_hmac, outbuf, &outlen); break;
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case SM4_MODE_CTR_SM3_HMAC: rv = sm4_ctr_sm3_hmac_encrypt_finish(&sm4_ctx.ctr_sm3_hmac, outbuf, &outlen); break;
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}
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if (rv != 1) {
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error_print();
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goto end;
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}
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if (fwrite(outbuf, 1, outlen, outfp) != outlen) {
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fprintf(stderr, "%s: output failure : %s\n", prog, strerror(errno));
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goto end;
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}
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} else {
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switch (mode) {
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case SM4_MODE_CBC: rv = sm4_cbc_decrypt_init(&sm4_ctx.cbc, key, iv); break;
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case SM4_MODE_GCM: rv = sm4_gcm_decrypt_init(&sm4_ctx.gcm, key, keylen, iv, ivlen, NULL, 0, GHASH_SIZE); break;
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case SM4_MODE_CBC_SM3_HMAC: rv = sm4_cbc_sm3_hmac_decrypt_init(&sm4_ctx.cbc_sm3_hmac, key, keylen, iv, ivlen, NULL, 0); break;
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case SM4_MODE_CTR_SM3_HMAC: rv = sm4_ctr_sm3_hmac_decrypt_init(&sm4_ctx.ctr_sm3_hmac, key, keylen, iv, ivlen, NULL, 0); break;
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}
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if (rv != 1) {
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error_print();
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goto end;
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}
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while ((inlen = fread(inbuf, 1, sizeof(inbuf), infp)) > 0) {
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switch (mode) {
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case SM4_MODE_CBC: rv = sm4_cbc_decrypt_update(&sm4_ctx.cbc, inbuf, inlen, outbuf, &outlen); break;
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case SM4_MODE_GCM: rv = sm4_gcm_decrypt_update(&sm4_ctx.gcm, inbuf, inlen, outbuf, &outlen); break;
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case SM4_MODE_CBC_SM3_HMAC: rv = sm4_cbc_sm3_hmac_decrypt_update(&sm4_ctx.cbc_sm3_hmac, inbuf, inlen, outbuf, &outlen); break;
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case SM4_MODE_CTR_SM3_HMAC: rv = sm4_ctr_sm3_hmac_decrypt_update(&sm4_ctx.ctr_sm3_hmac, inbuf, inlen, outbuf, &outlen); break;
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}
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if (rv != 1) {
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error_print();
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goto end;
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}
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if (fwrite(outbuf, 1, outlen, outfp) != outlen) {
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fprintf(stderr, "%s: output failure : %s\n", prog, strerror(errno));
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goto end;
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}
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}
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switch (mode) {
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case SM4_MODE_CBC: rv = sm4_cbc_decrypt_finish(&sm4_ctx.cbc, outbuf, &outlen); break;
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case SM4_MODE_GCM: rv = sm4_gcm_decrypt_finish(&sm4_ctx.gcm, outbuf, &outlen); break;
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case SM4_MODE_CBC_SM3_HMAC: rv = sm4_cbc_sm3_hmac_decrypt_finish(&sm4_ctx.cbc_sm3_hmac, outbuf, &outlen); break;
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case SM4_MODE_CTR_SM3_HMAC: rv = sm4_ctr_sm3_hmac_decrypt_finish(&sm4_ctx.ctr_sm3_hmac, outbuf, &outlen); break;
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}
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if (rv != 1) {
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error_print();
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goto end;
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}
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if (fwrite(outbuf, 1, outlen, outfp) != outlen) {
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fprintf(stderr, "%s: output failure : %s\n", prog, strerror(errno));
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goto end;
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}
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}
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ret = 0;
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end:
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gmssl_secure_clear(&sm4_ctx, sizeof(sm4_ctx));
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gmssl_secure_clear(key, sizeof(key));
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gmssl_secure_clear(iv, sizeof(iv));
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gmssl_secure_clear(inbuf, sizeof(inbuf));
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gmssl_secure_clear(outbuf, sizeof(outbuf));
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if (infile && infp) fclose(infp);
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if (outfile && outfp) fclose(outfp);
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return ret;
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}
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