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annotate src/keypair.c @ 64:fa53d1c54886

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Use default RNG for key generation, added options to generate public key from private key, use bundled tweetnacl as fallback instead of nacl download
author Ivo Smits <Ivo@UFO-Net.nl>
date Sat, 07 Jan 2017 18:07:27 +0100
parents dfac56805c77
children
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1 /* Copyright 2010 Ivo Smits <Ivo@UCIS.nl>. All rights reserved.
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2 Redistribution and use in source and binary forms, with or without modification, are
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3 permitted provided that the following conditions are met:
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4
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5 1. Redistributions of source code must retain the above copyright notice, this list of
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6 conditions and the following disclaimer.
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7
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8 2. Redistributions in binary form must reproduce the above copyright notice, this list
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9 of conditions and the following disclaimer in the documentation and/or other materials
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10 provided with the distribution.
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11
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12 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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13 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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14 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR
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15 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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16 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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17 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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18 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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19 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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20 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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21
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22 The views and conclusions contained in the software and documentation are those of the
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23 authors and should not be interpreted as representing official policies, either expressed
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24 or implied, of Ivo Smits.*/
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25
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26 #include "common.c"
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27 #include "crypto_box_curve25519xsalsa20poly1305.h"
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28 #include "crypto_scalarmult_curve25519.h"
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29 #include <fcntl.h>
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30 #include <unistd.h>
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32 int main(int argc, char** argv) {
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33 print_header();
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34
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35 unsigned char cpublickey[crypto_box_curve25519xsalsa20poly1305_PUBLICKEYBYTES];
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36 unsigned char csecretkey[crypto_box_curve25519xsalsa20poly1305_SECRETKEYBYTES];
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37 int input_mode = 0; //0=generate random, 1=read from argument
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38 int output_mode = 0; //0=human readable, 1=space separated, 2=concatenated binary
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39 int i;
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40
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41 for (i = 1; i < argc; i++) {
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42 char* a = argv[i];
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43 if (!strcmp(a, "-h") || !strcmp(a, "--help")) {
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44 printf("Please read the documentation at http://wiki.ucis.nl/QuickTun\n");
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45 return 0;
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46 } else if (!strcmp(a, "-v") || !strcmp(a, "--version")) {
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47 printf("UCIS QuickTun "QT_VERSION"\n");
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48 return 0;
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49 } else if (!strcmp(a, "-i")) {
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50 i++;
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51 if (i >= argc) return errorexit("Missing argument for -i");
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52 if (!hex2bin(csecretkey, argv[i], crypto_box_curve25519xsalsa20poly1305_SECRETKEYBYTES)) return errorexit("Invalid secret key argument");
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53 input_mode = 1;
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54 } else if (!strcmp(a, "-f")) {
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55 int len = fread(csecretkey, 1, crypto_box_curve25519xsalsa20poly1305_SECRETKEYBYTES, stdin);
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56 if (len < crypto_box_curve25519xsalsa20poly1305_SECRETKEYBYTES) return errorexitp("Error or end of file on STDIN");
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57 input_mode = 1;
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58 } else if (!strcmp(a, "-o")) {
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59 i++;
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60 a = argv[i];
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61 if (i >= argc) return errorexit("Missing argument for -o");
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62 if (!strcmp(a, "human")) output_mode = 0;
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63 else if (!strcmp(a, "space")) output_mode = 1;
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64 else if (!strcmp(a, "bin")) output_mode = 2;
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65 else return errorexit("Invalid argument specified for -o");
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66 } else {
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67 return errorexit("Unexpected command line argument");
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68 }
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69 }
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70
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71 if (input_mode == 0) {
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72 crypto_box_curve25519xsalsa20poly1305_keypair(cpublickey, csecretkey);
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73 } else {
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74 crypto_scalarmult_curve25519_base(cpublickey, csecretkey);
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75 }
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77 if (output_mode == 2) {
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78 fwrite(csecretkey, 1, crypto_box_curve25519xsalsa20poly1305_SECRETKEYBYTES, stdout);
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79 fwrite(cpublickey, 1, crypto_box_curve25519xsalsa20poly1305_PUBLICKEYBYTES, stdout);
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80 } else if (output_mode == 1) {
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81 for (i = 0; i < crypto_box_curve25519xsalsa20poly1305_SECRETKEYBYTES; i++) printf("%02x", csecretkey[i]);
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82 printf(" ");
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83 for (i = 0; i < crypto_box_curve25519xsalsa20poly1305_PUBLICKEYBYTES; i++) printf("%02x", cpublickey[i]);
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84 printf("\n");
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85 } else {
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86 printf("SECRET: ");
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87 for (i = 0; i < crypto_box_curve25519xsalsa20poly1305_SECRETKEYBYTES; i++) printf("%02x", csecretkey[i]);
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88 printf("\n");
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89
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90 printf("PUBLIC: ");
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91 for (i = 0; i < crypto_box_curve25519xsalsa20poly1305_PUBLICKEYBYTES; i++) printf("%02x", cpublickey[i]);
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92 printf("\n");
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93 }
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95 return 0;
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96 }