diff options
Diffstat (limited to 'sys/crypto/blowfish/bf_enc.c')
-rw-r--r-- | sys/crypto/blowfish/bf_enc.c | 125 |
1 files changed, 70 insertions, 55 deletions
diff --git a/sys/crypto/blowfish/bf_enc.c b/sys/crypto/blowfish/bf_enc.c index 5edd6db..831db17 100644 --- a/sys/crypto/blowfish/bf_enc.c +++ b/sys/crypto/blowfish/bf_enc.c @@ -1,12 +1,12 @@ /* $FreeBSD$ */ -/* $KAME: bf_enc.c,v 1.5 2000/09/18 21:21:19 itojun Exp $ */ +/* $KAME: bf_enc.c,v 1.7 2002/02/27 01:33:59 itojun Exp $ */ /* crypto/bf/bf_enc.c */ -/* Copyright (C) 1995-1997 Eric Young (eay@mincom.oz.au) +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written - * by Eric Young (eay@mincom.oz.au). + * 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 @@ -14,7 +14,7 @@ * 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@mincom.oz.au). + * 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. @@ -34,12 +34,12 @@ * 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@mincom.oz.au)" + * 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@mincom.oz.au)" + * "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 @@ -75,10 +75,9 @@ to modify the code. /* XXX "data" is host endian */ void -BF_encrypt(data, key, encrypt) +BF_encrypt(data, key) BF_LONG *data; BF_KEY *key; - int encrypt; { register BF_LONG l, r, *p, *s; @@ -87,57 +86,73 @@ BF_encrypt(data, key, encrypt) l = data[0]; r = data[1]; - if (encrypt) { - 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]); + 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]); + 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]; - } else { - l ^= p[BF_ROUNDS + 1]; + r ^= p[BF_ROUNDS + 1]; + + data[1] = l & 0xffffffff; + data[0] = r & 0xffffffff; +} + +/* XXX "data" is host endian */ +void +BF_decrypt(data, key) + BF_LONG *data; + BF_KEY *key; +{ + register BF_LONG l, r, *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]); + 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]; - } + 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 & 0xffffffff; data[0] = r & 0xffffffff; } |