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Diffstat (limited to 'libs/nixio/axTLS/crypto/rc4.c')
-rw-r--r-- | libs/nixio/axTLS/crypto/rc4.c | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/libs/nixio/axTLS/crypto/rc4.c b/libs/nixio/axTLS/crypto/rc4.c deleted file mode 100644 index 57136b82bd..0000000000 --- a/libs/nixio/axTLS/crypto/rc4.c +++ /dev/null @@ -1,91 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** - * An implementation of the RC4/ARC4 algorithm. - * Originally written by Christophe Devine. - */ - -#include <string.h> -#include "crypto.h" - -/** - * Get ready for an encrypt/decrypt operation - */ -void RC4_setup(RC4_CTX *ctx, const uint8_t *key, int length) -{ - int i, j = 0, k = 0, a; - uint8_t *m; - - ctx->x = 0; - ctx->y = 0; - m = ctx->m; - - for (i = 0; i < 256; i++) - m[i] = i; - - for (i = 0; i < 256; i++) - { - a = m[i]; - j = (uint8_t)(j + a + key[k]); - m[i] = m[j]; - m[j] = a; - - if (++k >= length) - k = 0; - } -} - -/** - * Perform the encrypt/decrypt operation (can use it for either since - * this is a stream cipher). - */ -void RC4_crypt(RC4_CTX *ctx, const uint8_t *msg, uint8_t *out, int length) -{ - int i; - uint8_t *m, x, y, a, b; - out = (uint8_t *)msg; - - x = ctx->x; - y = ctx->y; - m = ctx->m; - - for (i = 0; i < length; i++) - { - a = m[++x]; - y += a; - m[x] = b = m[y]; - m[y] = a; - out[i] ^= m[(uint8_t)(a + b)]; - } - - ctx->x = x; - ctx->y = y; -} |