Import scrypt-1.1.6.tgz with SHA-256
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This commit is contained in:
Chris Oei
parent
b490e825f3
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1acdffde66
30 changed files with 13307 additions and 0 deletions
181
main.c
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181
main.c
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/*-
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* Copyright 2009 Colin Percival
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* 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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* 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "scrypt_platform.h"
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#include <inttypes.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "readpass.h"
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#include "scryptenc.h"
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#include "warn.h"
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static void
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usage(void)
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{
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fprintf(stderr,
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"usage: scrypt {enc | dec} [...] infile [outfile]\n");
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exit(1);
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}
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int
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main(int argc, char *argv[])
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{
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FILE * infile = NULL;
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FILE * outfile = stdout;
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int dec = 0;
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size_t maxmem = 0;
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double maxmemfrac = 0.5;
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double maxtime = 300.0;
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char ch;
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char * passwd;
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int rc;
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#ifdef NEED_WARN_PROGNAME
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warn_progname = "scrypt";
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#endif
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/* We should have "enc" or "dec" first. */
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if (argc < 2)
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usage();
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if (strcmp(argv[1], "enc") == 0) {
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maxmem = 0;
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maxmemfrac = 0.125;
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maxtime = 5.0;
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} else if (strcmp(argv[1], "dec") == 0) {
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dec = 1;
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} else
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usage();
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argc--;
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argv++;
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/* Parse arguments. */
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while ((ch = getopt(argc, argv, "hm:M:t:")) != -1) {
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switch (ch) {
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case 'M':
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maxmem = strtoumax(optarg, NULL, 0);
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break;
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case 'm':
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maxmemfrac = strtod(optarg, NULL);
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break;
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case 't':
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maxtime = strtod(optarg, NULL);
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break;
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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/* We must have one or two parameters left. */
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if ((argc < 1) || (argc > 2))
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usage();
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/* Open the input file. */
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if ((infile = fopen(argv[0], "r")) == NULL) {
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warn("Cannot open input file: %s", argv[0]);
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exit(1);
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}
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/* If we have an output file, open it. */
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if (argc > 1) {
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if ((outfile = fopen(argv[1], "w")) == NULL) {
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warn("Cannot open output file: %s", argv[1]);
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exit(1);
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}
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}
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/* Prompt for a password. */
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if (tarsnap_readpass(&passwd, "Please enter passphrase",
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dec ? NULL : "Please confirm passphrase", 1))
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exit(1);
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/* Encrypt or decrypt. */
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if (dec)
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rc = scryptdec_file(infile, outfile, (uint8_t *)passwd,
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strlen(passwd), maxmem, maxmemfrac, maxtime);
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else
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rc = scryptenc_file(infile, outfile, (uint8_t *)passwd,
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strlen(passwd), maxmem, maxmemfrac, maxtime);
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/* Zero and free the password. */
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memset(passwd, 0, strlen(passwd));
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free(passwd);
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/* If we failed, print the right error message and exit. */
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if (rc != 0) {
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switch (rc) {
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case 1:
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warn("Error determining amount of available memory");
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break;
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case 2:
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warn("Error reading clocks");
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break;
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case 3:
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warn("Error computing derived key");
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break;
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case 4:
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warn("Error reading salt");
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break;
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case 5:
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warn("OpenSSL error");
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break;
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case 6:
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warn("Error allocating memory");
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break;
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case 7:
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warnx("Input is not valid scrypt-encrypted block");
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break;
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case 8:
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warnx("Unrecognized scrypt format version");
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break;
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case 9:
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warnx("Decrypting file would require too much memory");
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break;
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case 10:
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warnx("Decrypting file would take too much CPU time");
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break;
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case 11:
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warnx("Passphrase is incorrect");
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break;
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case 12:
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warn("Error writing file: %s",
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(argc > 1) ? argv[1] : "standard output");
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break;
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case 13:
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warn("Error reading file: %s", argv[0]);
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break;
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}
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exit(1);
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}
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return (0);
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}
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