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120 lines
3.7 KiB
C
120 lines
3.7 KiB
C
/* ====================================================================
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* Copyright (c) 2015 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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/*
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* Format-Preserve Encryption
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* implementation of NIST 800-38G FF1 schemes
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*
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* FPE is used to encrypt strings such as credit card numbers and phone numbers
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* the ciphertext is still in valid format, for example:
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* FPE_encrypt("13810631266") == "98723498792"
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* the output is still 11 digits
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include <assert.h>
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#include <openssl/err.h>
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#include <openssl/ffx.h>
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static int test()
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{
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char buf[100];
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char buf2[100];
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unsigned char key[32] = {0};
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unsigned char tweak[8] = { 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38 };
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FFX_CTX ctx;
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int r;
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ERR_load_crypto_strings();
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if (FFX_init(&ctx, 0, key, sizeof(key) * 8) < 0) {
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ERR_print_errors_fp(stderr);
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fprintf(stderr, "%s: %d\n", __FILE__, __LINE__);
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return -1;
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}
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char *in = "99999999999999999";
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r = FFX_encrypt(&ctx, in, strlen(in), tweak, sizeof(tweak), buf);
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if (r < 0) {
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printf("failed\n");
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return -1;
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}
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printf("%s\n", buf);
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printf("\n");
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r = FFX_decrypt(&ctx, buf, strlen(buf), tweak, sizeof(tweak), buf2);
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printf("%s\n", buf2);
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return 0;
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}
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/*
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* 7992739871, checksum = 3
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*/
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int luhn_test()
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{
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char *digits = "7992739871";
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int r = FFX_compute_luhn(digits, strlen(digits));
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printf("%c", r);
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return 0;
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}
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int main(int argc, char **argv)
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{
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return 0;
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}
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