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annotate src/keypair.c @ 43:4adbd9b67fe2

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Fix nonce calculation when both sides use the same key in nacltai and salty protocols
author Ivo Smits <Ivo@UCIS.nl>
date Thu, 16 May 2013 01:35:26 +0200
parents dfac56805c77
children fa53d1c54886
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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 <time.h>
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30 #include <fcntl.h>
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32 int main() {
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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 i;
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38
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39 fprintf(stderr, "Please feed 32 bytes of random data to stdin.\n");
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40 fprintf(stderr, "Example (slow but secure): quicktun.keypair < /dev/random\n");
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41 fprintf(stderr, "Example (fast but insecure): quicktun.keypair < /dev/urandom\n");
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42
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43 int len = fread(csecretkey, 1, crypto_box_curve25519xsalsa20poly1305_SECRETKEYBYTES, stdin);
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44 if (len < crypto_box_curve25519xsalsa20poly1305_SECRETKEYBYTES) return errorexitp("Error or end of file on STDIN");
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45 /* char* b;
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46 srand(time(NULL));
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47 for (b = csecretkey; b < csecretkey + crypto_box_curve25519xsalsa20poly1305_SECRETKEYBYTES; b++) *b = rand() % 255;*/
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49 crypto_scalarmult_curve25519_base(cpublickey, csecretkey);
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50
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51 printf("SECRET: ");
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52 for (i = 0; i < crypto_box_curve25519xsalsa20poly1305_SECRETKEYBYTES; i++) printf("%02x", csecretkey[i]);
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53 printf("\n");
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54
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55 printf("PUBLIC: ");
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56 for (i = 0; i < crypto_box_curve25519xsalsa20poly1305_PUBLICKEYBYTES; i++) printf("%02x", cpublickey[i]);
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57 printf("\n");
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58
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59 return 0;
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60 }