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crypto
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openssl
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crypto
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bf
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asm
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bf_cfb64.c
(2.11 KB)
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bf_ecb.c
(1.04 KB)
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bf_enc.c
(4.47 KB)
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bf_local.h
(3.93 KB)
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bf_ofb64.c
(1.57 KB)
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bf_pi.h
(29.65 KB)
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bf_skey.c
(1.42 KB)
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build.info
(283 B)
Editing: bf_cfb64.c
/* * 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 <openssl/blowfish.h> #include "bf_local.h" /* * 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 BF_cfb64_encrypt(const unsigned char *in, unsigned char *out, long length, const BF_KEY *schedule, unsigned char *ivec, int *num, int encrypt) { register BF_LONG v0, v1, t; register int n = *num; register long l = length; BF_LONG ti[2]; unsigned char *iv, c, cc; iv = (unsigned char *)ivec; if (encrypt) { while (l--) { if (n == 0) { n2l(iv, v0); ti[0] = v0; n2l(iv, v1); ti[1] = v1; BF_encrypt((BF_LONG *)ti, schedule); iv = (unsigned char *)ivec; t = ti[0]; l2n(t, iv); t = ti[1]; l2n(t, iv); iv = (unsigned char *)ivec; } c = *(in++) ^ iv[n]; *(out++) = c; iv[n] = c; n = (n + 1) & 0x07; } } else { while (l--) { if (n == 0) { n2l(iv, v0); ti[0] = v0; n2l(iv, v1); ti[1] = v1; BF_encrypt((BF_LONG *)ti, schedule); iv = (unsigned char *)ivec; t = ti[0]; l2n(t, iv); t = ti[1]; l2n(t, iv); iv = (unsigned char *)ivec; } cc = *(in++); c = iv[n]; iv[n] = cc; *(out++) = c ^ cc; n = (n + 1) & 0x07; } } v0 = v1 = ti[0] = ti[1] = t = c = cc = 0; *num = n; }
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