X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/ba6e6b64033b1f9de49feccb5c9cd438354481f7..0f00dc4c8eb47e67bc0f148c2dd109f73a451e0a:/serpent-check.c diff --git a/serpent-check.c b/serpent-check.c deleted file mode 100644 index 340af4f..0000000 --- a/serpent-check.c +++ /dev/null @@ -1,101 +0,0 @@ -/* -*-c-*- - * - * $Id: serpent-check.c,v 1.2 2004/04/08 01:36:15 mdw Exp $ - * - * Check the Serpent S-boxes - * - * (c) 2000 Straylight/Edgeware - */ - -/*----- Licensing notice --------------------------------------------------* - * - * This file is part of Catacomb. - * - * Catacomb is free software; you can redistribute it and/or modify - * it under the terms of the GNU Library General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * Catacomb is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with Catacomb; if not, write to the Free - * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, - * MA 02111-1307, USA. - */ - -/*----- Header files ------------------------------------------------------*/ - -#include -#include -#include - -#include - -#include "serpent-sbox.h" - -/*----- S-box tables ------------------------------------------------------*/ - -static const octet s[8][16] = { - { 3, 8, 15, 1, 10, 6, 5, 11, 14, 13, 4, 2, 7, 0, 9, 12 }, - { 15, 12, 2, 7, 9, 0, 5, 10, 1, 11, 14, 8, 6, 13, 3, 4 }, - { 8, 6, 7, 9, 3, 12, 10, 15, 13, 1, 14, 4, 0, 11, 5, 2 }, - { 0, 15, 11, 8, 12, 9, 6, 3, 13, 1, 2, 4, 10, 7, 5, 14 }, - { 1, 15, 8, 3, 12, 0, 11, 6, 2, 5, 4, 10, 9, 14, 7, 13 }, - { 15, 5, 2, 11, 4, 10, 9, 12, 0, 3, 14, 8, 13, 6, 7, 1 }, - { 7, 2, 12, 5, 8, 4, 6, 11, 14, 9, 1, 15, 13, 3, 10, 0 }, - { 1, 13, 15, 0, 14, 8, 2, 11, 7, 4, 12, 10, 9, 3, 5, 6 } -}; - -/*----- Main code ---------------------------------------------------------*/ - -/* --- @check@ --- * - * - * Arguments: @unsigned a, b, c, d@ = four bitslice output registers - * @const octet *p@ = pointer to S-box - * - * Returns: Zero if OK, nonzero on failure. - * - * Use: Checks that an S-box output is correct. - */ - -static int check(unsigned a, unsigned b, unsigned c, unsigned d, - const octet *p) -{ - octet buf[16]; - octet *q = buf; - unsigned i; - - for (i = 0; i < 16; i++) { - *q++ = (a & 1) | ((b & 1) << 1) | ((c & 1) << 2) | ((d & 1) << 3); - a >>= 1; b >>= 1; c >>= 1; d >>= 1; - } - return (memcmp(buf, p, sizeof(buf))); -} - -#define CHECK(i) do { \ - unsigned a = 0xaaaa, b = 0xcccc, c = 0xf0f0, d = 0xff00; \ - S##i(a, b, c, d); \ - if (check(a, b, c, d, s[i])) { \ - fprintf(stderr, "failure in S%i\n", i); \ - rc = EXIT_FAILURE; \ - } \ - IS##i(a, b, c, d); \ - if (a != 0xaaaa || b != 0xcccc || c != 0xf0f0 || d != 0xff00) { \ - fprintf(stderr, "failure in IS%i\n", i); \ - rc = EXIT_FAILURE; \ - } \ -} while (0) - -int main(void) -{ - int rc = 0; - CHECK(0); CHECK(1); CHECK(2); CHECK(3); - CHECK(4); CHECK(5); CHECK(6); CHECK(7); - return (rc); -} - -/*----- That's all, folks -------------------------------------------------*/