diff options
Diffstat (limited to 'Cryptlib/OpenSSL/crypto/des/ofb_enc.c')
| -rw-r--r-- | Cryptlib/OpenSSL/crypto/des/ofb_enc.c | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/Cryptlib/OpenSSL/crypto/des/ofb_enc.c b/Cryptlib/OpenSSL/crypto/des/ofb_enc.c deleted file mode 100644 index 65a9b860..00000000 --- a/Cryptlib/OpenSSL/crypto/des/ofb_enc.c +++ /dev/null @@ -1,82 +0,0 @@ -/* - * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. - * - * Licensed under the OpenSSL license (the "License"). You may not use - * this file except in compliance with the License. You can obtain a copy - * in the file LICENSE in the source distribution or at - * https://www.openssl.org/source/license.html - */ - -#include "des_locl.h" - -/* - * The input and output are loaded in multiples of 8 bits. What this means is - * that if you have numbits=12 and length=2 the first 12 bits will be - * retrieved from the first byte and half the second. The second 12 bits - * will come from the 3rd and half the 4th byte. - */ -void DES_ofb_encrypt(const unsigned char *in, unsigned char *out, int numbits, - long length, DES_key_schedule *schedule, - DES_cblock *ivec) -{ - register DES_LONG d0, d1, vv0, vv1, v0, v1, n = (numbits + 7) / 8; - register DES_LONG mask0, mask1; - register long l = length; - register int num = numbits; - DES_LONG ti[2]; - unsigned char *iv; - - if (num > 64) - return; - if (num > 32) { - mask0 = 0xffffffffL; - if (num >= 64) - mask1 = mask0; - else - mask1 = (1L << (num - 32)) - 1; - } else { - if (num == 32) - mask0 = 0xffffffffL; - else - mask0 = (1L << num) - 1; - mask1 = 0x00000000L; - } - - iv = &(*ivec)[0]; - c2l(iv, v0); - c2l(iv, v1); - ti[0] = v0; - ti[1] = v1; - while (l-- > 0) { - ti[0] = v0; - ti[1] = v1; - DES_encrypt1((DES_LONG *)ti, schedule, DES_ENCRYPT); - vv0 = ti[0]; - vv1 = ti[1]; - c2ln(in, d0, d1, n); - in += n; - d0 = (d0 ^ vv0) & mask0; - d1 = (d1 ^ vv1) & mask1; - l2cn(d0, d1, out, n); - out += n; - - if (num == 32) { - v0 = v1; - v1 = vv0; - } else if (num == 64) { - v0 = vv0; - v1 = vv1; - } else if (num > 32) { /* && num != 64 */ - v0 = ((v1 >> (num - 32)) | (vv0 << (64 - num))) & 0xffffffffL; - v1 = ((vv0 >> (num - 32)) | (vv1 << (64 - num))) & 0xffffffffL; - } else { /* num < 32 */ - - v0 = ((v0 >> num) | (v1 << (32 - num))) & 0xffffffffL; - v1 = ((v1 >> num) | (vv0 << (32 - num))) & 0xffffffffL; - } - } - iv = &(*ivec)[0]; - l2c(v0, iv); - l2c(v1, iv); - v0 = v1 = d0 = d1 = ti[0] = ti[1] = vv0 = vv1 = 0; -} |
