00001 /* $OpenBSD: blf.h,v 1.6 2002/02/16 21:27:17 millert Exp $ */ 00002 /* 00003 * Blowfish - a fast block cipher designed by Bruce Schneier 00004 * 00005 * Copyright 1997 Niels Provos <provos@physnet.uni-hamburg.de> 00006 * All rights reserved. 00007 * 00008 * Redistribution and use in source and binary forms, with or without 00009 * modification, are permitted provided that the following conditions 00010 * are met: 00011 * 1. Redistributions of source code must retain the above copyright 00012 * notice, this list of conditions and the following disclaimer. 00013 * 2. Redistributions in binary form must reproduce the above copyright 00014 * notice, this list of conditions and the following disclaimer in the 00015 * documentation and/or other materials provided with the distribution. 00016 * 3. All advertising materials mentioning features or use of this software 00017 * must display the following acknowledgement: 00018 * This product includes software developed by Niels Provos. 00019 * 4. The name of the author may not be used to endorse or promote products 00020 * derived from this software without specific prior written permission. 00021 * 00022 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 00023 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00024 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 00025 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 00026 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 00027 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00028 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00029 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00030 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 00031 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 */ 00033 00034 /* 00035 * Modified by <hongli@phusion.nl> on 2009-10-24: 00036 * 00037 * - Made it so that this header cannot be included directly. 00038 */ 00039 00040 #ifndef IN_PASSENGER_BCRYPT_C 00041 #error "Do not include this header directly. Use BCrypt.h instead!" 00042 #endif 00043 00044 #ifndef _PASSENGER_BLOWFISH_H_ 00045 #define _PASSENGER_BLOWFISH_H_ 00046 00047 /* Add this type so we'll compile nicely on Solaris. 00048 Thanks to Jeremy LaTrasse and the Twitter crew. */ 00049 #ifdef __sun 00050 #define u_int8_t uint8_t 00051 #define u_int16_t uint16_t 00052 #define u_int32_t uint32_t 00053 #define u_int64_t uint64_t 00054 #endif 00055 00056 // Imported from pwd.h. <coda.hale@gmail.com> 00057 #define _PASSWORD_LEN 128 /* max length, not counting NUL */ 00058 00059 /* Schneier specifies a maximum key length of 56 bytes. 00060 * This ensures that every key bit affects every cipher 00061 * bit. However, the subkeys can hold up to 72 bytes. 00062 * Warning: For normal blowfish encryption only 56 bytes 00063 * of the key affect all cipherbits. 00064 */ 00065 00066 #define BLF_N 16 /* Number of Subkeys */ 00067 #define BLF_MAXKEYLEN ((BLF_N-2)*4) /* 448 bits */ 00068 00069 /* Blowfish context */ 00070 typedef struct BlowfishContext { 00071 u_int32_t S[4][256]; /* S-Boxes */ 00072 u_int32_t P[BLF_N + 2]; /* Subkeys */ 00073 } blf_ctx; 00074 00075 /* Raw access to customized Blowfish 00076 * blf_key is just: 00077 * Blowfish_initstate( state ) 00078 * Blowfish_expand0state( state, key, keylen ) 00079 */ 00080 00081 void Blowfish_encipher(blf_ctx *, u_int32_t *, u_int32_t *); 00082 void Blowfish_decipher(blf_ctx *, u_int32_t *, u_int32_t *); 00083 void Blowfish_initstate(blf_ctx *); 00084 void Blowfish_expand0state(blf_ctx *, const u_int8_t *, u_int16_t); 00085 void Blowfish_expandstate 00086 (blf_ctx *, const u_int8_t *, u_int16_t, const u_int8_t *, u_int16_t); 00087 00088 /* Standard Blowfish */ 00089 00090 void blf_key(blf_ctx *, const u_int8_t *, u_int16_t); 00091 void blf_enc(blf_ctx *, u_int32_t *, u_int16_t); 00092 void blf_dec(blf_ctx *, u_int32_t *, u_int16_t); 00093 00094 void blf_ecb_encrypt(blf_ctx *, u_int8_t *, u_int32_t); 00095 void blf_ecb_decrypt(blf_ctx *, u_int8_t *, u_int32_t); 00096 00097 void blf_cbc_encrypt(blf_ctx *, u_int8_t *, u_int8_t *, u_int32_t); 00098 void blf_cbc_decrypt(blf_ctx *, u_int8_t *, u_int8_t *, u_int32_t); 00099 00100 /* Converts u_int8_t to u_int32_t */ 00101 u_int32_t Blowfish_stream2word(const u_int8_t *, u_int16_t , u_int16_t *); 00102 00103 #endif /* _PASSENGER_BLOWFISH_H_ */
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