diff options
Diffstat (limited to 'contrib/pgcrypto/blf.h')
| -rw-r--r-- | contrib/pgcrypto/blf.h | 113 |
1 files changed, 39 insertions, 74 deletions
diff --git a/contrib/pgcrypto/blf.h b/contrib/pgcrypto/blf.h index 81159b13be4..7e11dc9aeb4 100644 --- a/contrib/pgcrypto/blf.h +++ b/contrib/pgcrypto/blf.h @@ -1,83 +1,48 @@ -/* $OpenBSD: blf.h,v 1.3 2001/05/15 02:40:35 deraadt Exp $ */ - +/* $PostgreSQL: pgsql/contrib/pgcrypto/blf.h,v 1.6 2007/03/28 22:48:58 neilc Exp $ */ /* - * Blowfish - a fast block cipher designed by Bruce Schneier + * PuTTY is copyright 1997-2007 Simon Tatham. * - * Copyright 1997 Niels Provos <[email protected]> - * All rights reserved. + * Portions copyright Robert de Bath, Joris van Rantwijk, Delian + * Delchev, Andreas Schultz, Jeroen Massar, Wez Furlong, Nicolas Barry, + * Justin Bradford, Ben Harris, Malcolm Smith, Ahmad Khalifa, Markus + * Kuhn, and CORE SDI S.A. * - * 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 above 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 software developed by Niels Provos. - * 4. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. - */ - -#ifndef _BLF_H_ -#define _BLF_H_ - -/* Schneier states the maximum key length to be 56 bytes. - * The way how the subkeys are initalized by the key up - * to (N+2)*4 i.e. 72 bytes are utilized. - * Warning: For normal blowfish encryption only 56 bytes - * of the key affect all cipherbits. + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE + * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF + * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ -#define BLF_N 16 /* Number of Subkeys */ -#define BLF_MAXKEYLEN ((BLF_N-2)*4) /* 448 bits */ - -/* Blowfish context */ -typedef struct BlowfishContext +typedef struct { - uint32 S[4][256]; /* S-Boxes */ - uint32 P[BLF_N + 2]; /* Subkeys */ -} blf_ctx; - -/* Raw access to customized Blowfish - * blf_key is just: - * Blowfish_initstate( state ) - * Blowfish_expand0state( state, key, keylen ) - */ - -void Blowfish_encipher(blf_ctx *, uint32 *); -void Blowfish_decipher(blf_ctx *, uint32 *); -void Blowfish_initstate(blf_ctx *); -void Blowfish_expand0state(blf_ctx *, const uint8 *, uint16); -void Blowfish_expandstate - (blf_ctx *, const uint8 *, uint16, const uint8 *, uint16); - -/* Standard Blowfish */ - -void blf_key(blf_ctx *, const uint8 *, uint16); -void blf_enc(blf_ctx *, uint32 *, uint16); -void blf_dec(blf_ctx *, uint32 *, uint16); - -/* Converts uint8 to uint32 */ -uint32 Blowfish_stream2word(const uint8 *, uint16, uint16 *); - -void blf_ecb_encrypt(blf_ctx *, uint8 *, uint32); -void blf_ecb_decrypt(blf_ctx *, uint8 *, uint32); + uint32 S0[256], + S1[256], + S2[256], + S3[256], + P[18]; + uint32 iv0, + iv1; /* for CBC mode */ +} BlowfishContext; + +void blowfish_setkey(BlowfishContext *ctx, const uint8 *key, short keybytes); +void blowfish_setiv(BlowfishContext *ctx, const uint8 *iv); +void blowfish_encrypt_cbc(uint8 *blk, int len, BlowfishContext *ctx); +void blowfish_decrypt_cbc(uint8 *blk, int len, BlowfishContext *ctx); +void blowfish_encrypt_ecb(uint8 *blk, int len, BlowfishContext *ctx); +void blowfish_decrypt_ecb(uint8 *blk, int len, BlowfishContext *ctx); -void blf_cbc_encrypt(blf_ctx *, uint8 *, uint8 *, uint32); -void blf_cbc_decrypt(blf_ctx *, uint8 *, uint8 *, uint32); -#endif |