diff options
Diffstat (limited to 'thirdparty/openssl/crypto/bf/bf_enc.c')
-rw-r--r-- | thirdparty/openssl/crypto/bf/bf_enc.c | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/bf/bf_enc.c b/thirdparty/openssl/crypto/bf/bf_enc.c new file mode 100644 index 0000000000..b268795f5b --- /dev/null +++ b/thirdparty/openssl/crypto/bf/bf_enc.c @@ -0,0 +1,300 @@ +/* crypto/bf/bf_enc.c */ +/* 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 <openssl/blowfish.h> +#include "bf_locl.h" + +/* + * Blowfish as implemented from 'Blowfish: Springer-Verlag paper' (From + * LECTURE NOTES IN COMPUTER SCIENCE 809, FAST SOFTWARE ENCRYPTION, CAMBRIDGE + * SECURITY WORKSHOP, CAMBRIDGE, U.K., DECEMBER 9-11, 1993) + */ + +#if (BF_ROUNDS != 16) && (BF_ROUNDS != 20) +# error If you set BF_ROUNDS to some value other than 16 or 20, you will have \ +to modify the code. +#endif + +void BF_encrypt(BF_LONG *data, const BF_KEY *key) +{ +#ifndef BF_PTR2 + register BF_LONG l, r; + register const BF_LONG *p, *s; + + p = key->P; + s = &(key->S[0]); + l = data[0]; + r = data[1]; + + l ^= p[0]; + BF_ENC(r, l, s, p[1]); + BF_ENC(l, r, s, p[2]); + BF_ENC(r, l, s, p[3]); + BF_ENC(l, r, s, p[4]); + BF_ENC(r, l, s, p[5]); + BF_ENC(l, r, s, p[6]); + BF_ENC(r, l, s, p[7]); + BF_ENC(l, r, s, p[8]); + BF_ENC(r, l, s, p[9]); + BF_ENC(l, r, s, p[10]); + BF_ENC(r, l, s, p[11]); + BF_ENC(l, r, s, p[12]); + BF_ENC(r, l, s, p[13]); + BF_ENC(l, r, s, p[14]); + BF_ENC(r, l, s, p[15]); + BF_ENC(l, r, s, p[16]); +# if BF_ROUNDS == 20 + BF_ENC(r, l, s, p[17]); + BF_ENC(l, r, s, p[18]); + BF_ENC(r, l, s, p[19]); + BF_ENC(l, r, s, p[20]); +# endif + r ^= p[BF_ROUNDS + 1]; + + data[1] = l & 0xffffffffL; + data[0] = r & 0xffffffffL; +#else + register BF_LONG l, r, t, *k; + + l = data[0]; + r = data[1]; + k = (BF_LONG *)key; + + l ^= k[0]; + BF_ENC(r, l, k, 1); + BF_ENC(l, r, k, 2); + BF_ENC(r, l, k, 3); + BF_ENC(l, r, k, 4); + BF_ENC(r, l, k, 5); + BF_ENC(l, r, k, 6); + BF_ENC(r, l, k, 7); + BF_ENC(l, r, k, 8); + BF_ENC(r, l, k, 9); + BF_ENC(l, r, k, 10); + BF_ENC(r, l, k, 11); + BF_ENC(l, r, k, 12); + BF_ENC(r, l, k, 13); + BF_ENC(l, r, k, 14); + BF_ENC(r, l, k, 15); + BF_ENC(l, r, k, 16); +# if BF_ROUNDS == 20 + BF_ENC(r, l, k, 17); + BF_ENC(l, r, k, 18); + BF_ENC(r, l, k, 19); + BF_ENC(l, r, k, 20); +# endif + r ^= k[BF_ROUNDS + 1]; + + data[1] = l & 0xffffffffL; + data[0] = r & 0xffffffffL; +#endif +} + +#ifndef BF_DEFAULT_OPTIONS + +void BF_decrypt(BF_LONG *data, const BF_KEY *key) +{ +# ifndef BF_PTR2 + register BF_LONG l, r; + register const BF_LONG *p, *s; + + p = key->P; + s = &(key->S[0]); + l = data[0]; + r = data[1]; + + l ^= p[BF_ROUNDS + 1]; +# if BF_ROUNDS == 20 + BF_ENC(r, l, s, p[20]); + BF_ENC(l, r, s, p[19]); + BF_ENC(r, l, s, p[18]); + BF_ENC(l, r, s, p[17]); +# endif + BF_ENC(r, l, s, p[16]); + BF_ENC(l, r, s, p[15]); + BF_ENC(r, l, s, p[14]); + BF_ENC(l, r, s, p[13]); + BF_ENC(r, l, s, p[12]); + BF_ENC(l, r, s, p[11]); + BF_ENC(r, l, s, p[10]); + BF_ENC(l, r, s, p[9]); + BF_ENC(r, l, s, p[8]); + BF_ENC(l, r, s, p[7]); + BF_ENC(r, l, s, p[6]); + BF_ENC(l, r, s, p[5]); + BF_ENC(r, l, s, p[4]); + BF_ENC(l, r, s, p[3]); + BF_ENC(r, l, s, p[2]); + BF_ENC(l, r, s, p[1]); + r ^= p[0]; + + data[1] = l & 0xffffffffL; + data[0] = r & 0xffffffffL; +# else + register BF_LONG l, r, t, *k; + + l = data[0]; + r = data[1]; + k = (BF_LONG *)key; + + l ^= k[BF_ROUNDS + 1]; +# if BF_ROUNDS == 20 + BF_ENC(r, l, k, 20); + BF_ENC(l, r, k, 19); + BF_ENC(r, l, k, 18); + BF_ENC(l, r, k, 17); +# endif + BF_ENC(r, l, k, 16); + BF_ENC(l, r, k, 15); + BF_ENC(r, l, k, 14); + BF_ENC(l, r, k, 13); + BF_ENC(r, l, k, 12); + BF_ENC(l, r, k, 11); + BF_ENC(r, l, k, 10); + BF_ENC(l, r, k, 9); + BF_ENC(r, l, k, 8); + BF_ENC(l, r, k, 7); + BF_ENC(r, l, k, 6); + BF_ENC(l, r, k, 5); + BF_ENC(r, l, k, 4); + BF_ENC(l, r, k, 3); + BF_ENC(r, l, k, 2); + BF_ENC(l, r, k, 1); + r ^= k[0]; + + data[1] = l & 0xffffffffL; + data[0] = r & 0xffffffffL; +# endif +} + +void BF_cbc_encrypt(const unsigned char *in, unsigned char *out, long length, + const BF_KEY *schedule, unsigned char *ivec, int encrypt) +{ + register BF_LONG tin0, tin1; + register BF_LONG tout0, tout1, xor0, xor1; + register long l = length; + BF_LONG tin[2]; + + if (encrypt) { + n2l(ivec, tout0); + n2l(ivec, tout1); + ivec -= 8; + for (l -= 8; l >= 0; l -= 8) { + n2l(in, tin0); + n2l(in, tin1); + tin0 ^= tout0; + tin1 ^= tout1; + tin[0] = tin0; + tin[1] = tin1; + BF_encrypt(tin, schedule); + tout0 = tin[0]; + tout1 = tin[1]; + l2n(tout0, out); + l2n(tout1, out); + } + if (l != -8) { + n2ln(in, tin0, tin1, l + 8); + tin0 ^= tout0; + tin1 ^= tout1; + tin[0] = tin0; + tin[1] = tin1; + BF_encrypt(tin, schedule); + tout0 = tin[0]; + tout1 = tin[1]; + l2n(tout0, out); + l2n(tout1, out); + } + l2n(tout0, ivec); + l2n(tout1, ivec); + } else { + n2l(ivec, xor0); + n2l(ivec, xor1); + ivec -= 8; + for (l -= 8; l >= 0; l -= 8) { + n2l(in, tin0); + n2l(in, tin1); + tin[0] = tin0; + tin[1] = tin1; + BF_decrypt(tin, schedule); + tout0 = tin[0] ^ xor0; + tout1 = tin[1] ^ xor1; + l2n(tout0, out); + l2n(tout1, out); + xor0 = tin0; + xor1 = tin1; + } + if (l != -8) { + n2l(in, tin0); + n2l(in, tin1); + tin[0] = tin0; + tin[1] = tin1; + BF_decrypt(tin, schedule); + tout0 = tin[0] ^ xor0; + tout1 = tin[1] ^ xor1; + l2nn(tout0, tout1, out, l + 8); + xor0 = tin0; + xor1 = tin1; + } + l2n(xor0, ivec); + l2n(xor1, ivec); + } + tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0; + tin[0] = tin[1] = 0; +} + +#endif |