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Diffstat (limited to 'src/decrepit/des/cfb64ede.c')
-rw-r--r-- | src/decrepit/des/cfb64ede.c | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/src/decrepit/des/cfb64ede.c b/src/decrepit/des/cfb64ede.c deleted file mode 100644 index 680a75a..0000000 --- a/src/decrepit/des/cfb64ede.c +++ /dev/null @@ -1,242 +0,0 @@ -/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) - * All rights reserved. - * - * This package is an SSL implementation written - * by Eric Young (eay@cryptsoft.com). - * The implementation was written so as to conform with Netscapes SSL. - * - * This library is free for commercial and non-commercial use as long as - * the following conditions are aheared to. The following conditions - * apply to all code found in this distribution, be it the RC4, RSA, - * lhash, DES, etc., code; not just the SSL code. The SSL documentation - * included with this distribution is covered by the same copyright terms - * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * - * Copyright remains Eric Young's, and as such any Copyright notices in - * the code are not to be removed. - * If this package is used in a product, Eric Young should be given attribution - * as the author of the parts of the library used. - * This can be in the form of a textual message at program startup or - * in documentation (online or textual) provided with the package. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the copyright - * notice, this list of conditions and the following disclaimer. - * 2. 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. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * "This product includes cryptographic software written by - * Eric Young (eay@cryptsoft.com)" - * The word 'cryptographic' can be left out if the rouines from the library - * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from - * the apps directory (application code) you must include an acknowledgement: - * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * - * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 AUTHOR 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. - * - * The licence and distribution terms for any publically available version or - * derivative of this code cannot be changed. i.e. this code cannot simply be - * copied and put under another distribution licence - * [including the GNU Public Licence.] */ - -#include <string.h> - -#include <openssl/des.h> - -#include "../crypto/des/internal.h" - - -/* defined in des.c */ -void DES_decrypt3(uint32_t *data, const DES_key_schedule *ks1, - const DES_key_schedule *ks2, const DES_key_schedule *ks3); -void DES_encrypt3(uint32_t *data, const DES_key_schedule *ks1, - const DES_key_schedule *ks2, const DES_key_schedule *ks3); - -/* The input and output encrypted as though 64bit cfb mode is being used. The - * extra state information to record how much of the 64bit block we have used - * is contained in *num; */ -void DES_ede3_cfb64_encrypt(const uint8_t *in, uint8_t *out, - long length, DES_key_schedule *ks1, - DES_key_schedule *ks2, DES_key_schedule *ks3, - DES_cblock *ivec, int *num, int enc) { - uint32_t v0, v1; - long l = length; - int n = *num; - uint32_t ti[2]; - uint8_t *iv, c, cc; - - iv = ivec->bytes; - if (enc) { - while (l--) { - if (n == 0) { - c2l(iv, v0); - c2l(iv, v1); - - ti[0] = v0; - ti[1] = v1; - DES_encrypt3(ti, ks1, ks2, ks3); - v0 = ti[0]; - v1 = ti[1]; - - iv = ivec->bytes; - l2c(v0, iv); - l2c(v1, iv); - iv = ivec->bytes; - } - c = *(in++) ^ iv[n]; - *(out++) = c; - iv[n] = c; - n = (n + 1) & 0x07; - } - } else { - while (l--) { - if (n == 0) { - c2l(iv, v0); - c2l(iv, v1); - - ti[0] = v0; - ti[1] = v1; - DES_encrypt3(ti, ks1, ks2, ks3); - v0 = ti[0]; - v1 = ti[1]; - - iv = ivec->bytes; - l2c(v0, iv); - l2c(v1, iv); - iv = ivec->bytes; - } - cc = *(in++); - c = iv[n]; - iv[n] = cc; - *(out++) = c ^ cc; - n = (n + 1) & 0x07; - } - } - v0 = v1 = ti[0] = ti[1] = c = cc = 0; - *num = n; -} - -/* This is compatible with the single key CFB-r for DES, even thought that's - * not what EVP needs. */ - -void DES_ede3_cfb_encrypt(const uint8_t *in, uint8_t *out, int numbits, - long length, DES_key_schedule *ks1, - DES_key_schedule *ks2, DES_key_schedule *ks3, - DES_cblock *ivec, int enc) { - uint32_t d0, d1, v0, v1; - unsigned long l = length, n = ((unsigned int)numbits + 7) / 8; - int num = numbits, i; - uint32_t ti[2]; - uint8_t *iv; - uint8_t ovec[16]; - - if (num > 64) { - return; - }; - - iv = ivec->bytes; - c2l(iv, v0); - c2l(iv, v1); - - if (enc) { - while (l >= n) { - l -= n; - ti[0] = v0; - ti[1] = v1; - DES_encrypt3(ti, ks1, ks2, ks3); - c2ln(in, d0, d1, n); - in += n; - d0 ^= ti[0]; - d1 ^= ti[1]; - l2cn(d0, d1, out, n); - out += n; - /* 30-08-94 - eay - changed because l>>32 and l<<32 are bad under - * gcc :-( */ - if (num == 32) { - v0 = v1; - v1 = d0; - } else if (num == 64) { - v0 = d0; - v1 = d1; - } else { - iv = &ovec[0]; - l2c(v0, iv); - l2c(v1, iv); - l2c(d0, iv); - l2c(d1, iv); - /* shift ovec left most of the bits... */ - memmove(ovec, ovec + num / 8, 8 + (num % 8 ? 1 : 0)); - /* now the remaining bits */ - if (num % 8 != 0) { - for (i = 0; i < 8; ++i) { - ovec[i] <<= num % 8; - ovec[i] |= ovec[i + 1] >> (8 - num % 8); - } - } - iv = &ovec[0]; - c2l(iv, v0); - c2l(iv, v1); - } - } - } else { - while (l >= n) { - l -= n; - ti[0] = v0; - ti[1] = v1; - DES_encrypt3(ti, ks1, ks2, ks3); - c2ln(in, d0, d1, n); - in += n; - /* 30-08-94 - eay - changed because l>>32 and l<<32 are bad under - * gcc :-( */ - if (num == 32) { - v0 = v1; - v1 = d0; - } else if (num == 64) { - v0 = d0; - v1 = d1; - } else { - iv = &ovec[0]; - l2c(v0, iv); - l2c(v1, iv); - l2c(d0, iv); - l2c(d1, iv); - /* shift ovec left most of the bits... */ - memmove(ovec, ovec + num / 8, 8 + (num % 8 ? 1 : 0)); - /* now the remaining bits */ - if (num % 8 != 0) { - for (i = 0; i < 8; ++i) { - ovec[i] <<= num % 8; - ovec[i] |= ovec[i + 1] >> (8 - num % 8); - } - } - iv = &ovec[0]; - c2l(iv, v0); - c2l(iv, v1); - } - d0 ^= ti[0]; - d1 ^= ti[1]; - l2cn(d0, d1, out, n); - out += n; - } - } - - iv = ivec->bytes; - l2c(v0, iv); - l2c(v1, iv); - v0 = v1 = d0 = d1 = ti[0] = ti[1] = 0; -} |