├── .github
    └── workflows
    │   └── libbcrypt.yml
├── include
    └── bcrypt.h
├── CMakeLists.txt
├── .gitignore
├── test
    └── main.cpp
├── src
    ├── openbsd.h
    ├── node_blf.h
    ├── bcrypt.cpp
    └── blowfish.cpp
├── README.md
└── LICENSE


/.github/workflows/libbcrypt.yml:
--------------------------------------------------------------------------------
 1 | name: libbcrypt
 2 | 
 3 | on: [push, pull_request]
 4 | 
 5 | jobs:
 6 |     build:
 7 |         runs-on: ubuntu-latest
 8 |         steps:
 9 |             - uses: actions/checkout@v1
10 |             - name: make
11 |               run: make
12 |             - name: make test
13 |               run: make test
14 | 


--------------------------------------------------------------------------------
/include/bcrypt.h:
--------------------------------------------------------------------------------
 1 | #ifndef BCRYPT_H
 2 | #define BCRYPT_H
 3 | 
 4 | #include <string>
 5 | 
 6 | namespace bcrypt {
 7 | 
 8 |     std::string generateHash(const std::string & password , unsigned rounds = 10 );
 9 | 
10 |     bool validatePassword(const std::string & password, const std::string & hash);
11 | 
12 | }
13 | 
14 | #endif // BCRYPT_H
15 | 


--------------------------------------------------------------------------------
/CMakeLists.txt:
--------------------------------------------------------------------------------
 1 | cmake_minimum_required(VERSION 3.2)
 2 | 
 3 | option(BUILD_TESTS "Build test programs" OFF)
 4 | 
 5 | project(bcrypt)
 6 | 
 7 | set(CMAKE_CXX_STANDARD 11)
 8 | 
 9 | add_library(bcrypt src/bcrypt.cpp src/blowfish.cpp)
10 | target_include_directories(bcrypt PRIVATE src/)
11 | target_include_directories(bcrypt PUBLIC include/)
12 | 
13 | if(BUILD_TESTS)
14 |   add_executable(test test/main.cpp)
15 |   target_link_libraries(test PRIVATE bcrypt)
16 | endif()
17 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | # Prerequisites
 2 | *.d
 3 | 
 4 | # Compiled Object files
 5 | *.slo
 6 | *.lo
 7 | *.o
 8 | *.obj
 9 | 
10 | # Precompiled Headers
11 | *.gch
12 | *.pch
13 | 
14 | # Compiled Dynamic libraries
15 | *.so
16 | *.dylib
17 | *.dll
18 | 
19 | # Fortran module files
20 | *.mod
21 | *.smod
22 | 
23 | # Compiled Static libraries
24 | *.lai
25 | *.la
26 | *.a
27 | *.lib
28 | 
29 | # Executables
30 | *.exe
31 | *.out
32 | *.app
33 | bin
34 | obj
35 | 
36 | # IDE Files
37 | *.layout
38 | *.vscode
39 | 
40 | build/
41 | .cache/
42 | 
43 | 


--------------------------------------------------------------------------------
/test/main.cpp:
--------------------------------------------------------------------------------
 1 | #include "bcrypt.h"
 2 | #include <iostream>
 3 | #include <string>
 4 | 
 5 | 
 6 | int main()
 7 | {
 8 | 
 9 |     std::string password = "top_secret";
10 | 
11 |     std::string hash = bcrypt::generateHash(password);
12 |     std::cout << "Hash: " << hash << std::endl;
13 | 
14 |     hash=bcrypt::generateHash(password);
15 |     std::cout << "Hash: " << hash << std::endl;
16 | 
17 |     std::cout << "\"" << password << "\" : " << bcrypt::validatePassword(password,hash) << std::endl;
18 |     std::cout << "\"wrong\" : " << bcrypt::validatePassword("wrong",hash) << std::endl;
19 | 
20 |     return 0;
21 | }
22 | 


--------------------------------------------------------------------------------
/src/openbsd.h:
--------------------------------------------------------------------------------
 1 | #ifndef ARC4RANDOM_H_INCLUDED
 2 | #define ARC4RANDOM_H_INCLUDED
 3 | 
 4 | #include <cstdlib>     /* srand, rand */
 5 | #include <cstddef>
 6 | #include <cstring>
 7 | #include <ctime>
 8 | #include <sys/time.h>
 9 | #include <sys/types.h>
10 | #include <unistd.h>
11 | 
12 | inline
13 | void arc4random_buf(void *buf, size_t nbytes)
14 | {
15 |     for( size_t n = 0; n < nbytes; ++ n)
16 |         ((char*)(buf))[n] = rand() %256;
17 | }
18 | 
19 | inline
20 | void arc4random_init(void)
21 | {
22 |   struct timeval tv;
23 |   gettimeofday(&tv, 0);
24 |   // this is not very good, but we lack a portable non-blocking API
25 |   srand( ((unsigned int) tv.tv_usec) ^ (unsigned int)getpid());
26 | }
27 | 
28 | 
29 | #endif // ARC4RANDOM_H_INCLUDED
30 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # Bcrypt.cpp
 2 | A C++ wrapper around [bcrypt](https://en.wikipedia.org/wiki/Bcrypt) (origin: Open BSD) password hashing
 3 | 
 4 | 
 5 | ## How to use
 6 | 
 7 | Here an example how to use this wrapper class
 8 | 
 9 | ```cpp
10 | #include "bcrypt.h"
11 | #include <iostream>
12 | #include <string>
13 | 
14 | 
15 | int main()
16 | {
17 | 
18 |     std::string password = "top_secret";
19 | 
20 |     std::string hash = bcrypt::generateHash(password);
21 | 
22 |     std::cout << "Hash: " << hash << std::endl;
23 | 
24 |     std::cout << "\"" << password << "\" : " << bcrypt::validatePassword(password,hash) << std::endl;
25 |     std::cout << "\"wrong\" : " << bcrypt::validatePassword("wrong",hash) << std::endl;
26 | 
27 |     return 0;
28 | }
29 | 
30 | ```
31 | 
32 | output:
33 | 
34 | ```
35 | Hash: $2b$10$9ngimRxnytdaWoCd4NKPneEb/9dW24/B830XpS8TbExVeGKbukYbG
36 | "top_secret" : 1
37 | "wrong" : 0
38 | ```
39 | 
40 | You can check the hash online at [https://bcrypt-generator.com](https://bcrypt-generator.com/)
41 | 
42 | Former version used Open BSD as origin. Since the hash output was not fully compatible to common web services 
43 | we now use source from [node.bcrypt](https://github.com/kelektiv/node.bcrypt.js).
44 | 
45 | But also the web services might differ each other, so just use the hashes generated by this library internally
46 | in your application.
47 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | BSD 4-Clause License
 2 | 
 3 | Copyright (c) 2019, Christoph Hilchenbach
 4 | All rights reserved.
 5 | 
 6 | Redistribution and use in source and binary forms, with or without
 7 | modification, are permitted provided that the following conditions
 8 | are met:
 9 | 1. Redistributions of source code must retain the above copyright
10 |    notice, this list of conditions and the following disclaimer.
11 | 2. Redistributions in binary form must reproduce the above copyright
12 |    notice, this list of conditions and the following disclaimer in the
13 |    documentation and/or other materials provided with the distribution.
14 | 3. All advertising materials mentioning features or use of this software
15 |    must display the following acknowledgement:
16 |    This product includes software developed by Niels Provos.
17 | 4. The name of the author may not be used to endorse or promote products
18 |    derived from this software without specific prior written permission.
19 | 
20 | THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 | IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 | OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 | IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 | NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 | THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 | 


--------------------------------------------------------------------------------
/src/node_blf.h:
--------------------------------------------------------------------------------
  1 | /* $OpenBSD: blf.h,v 1.7 2007/03/14 17:59:41 grunk Exp $ */
  2 | /*
  3 |  * Blowfish - a fast block cipher designed by Bruce Schneier
  4 |  *
  5 |  * Copyright 1997 Niels Provos <provos@physnet.uni-hamburg.de>
  6 |  * All rights reserved.
  7 |  *
  8 |  * Redistribution and use in source and binary forms, with or without
  9 |  * modification, are permitted provided that the following conditions
 10 |  * are met:
 11 |  * 1. Redistributions of source code must retain the above copyright
 12 |  *    notice, this list of conditions and the following disclaimer.
 13 |  * 2. Redistributions in binary form must reproduce the above copyright
 14 |  *    notice, this list of conditions and the following disclaimer in the
 15 |  *    documentation and/or other materials provided with the distribution.
 16 |  * 3. All advertising materials mentioning features or use of this software
 17 |  *    must display the following acknowledgement:
 18 |  *      This product includes software developed by Niels Provos.
 19 |  * 4. The name of the author may not be used to endorse or promote products
 20 |  *    derived from this software without specific prior written permission.
 21 |  *
 22 |  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 23 |  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 24 |  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 25 |  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 26 |  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 27 |  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 28 |  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 29 |  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 30 |  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 31 |  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 32 |  */
 33 | 
 34 | #ifndef _NODE_BLF_H_
 35 | #define _NODE_BLF_H_
 36 | 
 37 | #include <sys/types.h>
 38 | 
 39 | /* Solaris compatibility */
 40 | #ifdef __sun
 41 | #define u_int8_t uint8_t
 42 | #define u_int16_t uint16_t
 43 | #define u_int32_t uint32_t
 44 | #define u_int64_t uint64_t
 45 | #endif
 46 | 
 47 | #ifdef _WIN32
 48 | #define u_int8_t unsigned __int8
 49 | #define u_int16_t unsigned __int16
 50 | #define u_int32_t unsigned __int32
 51 | #define u_int64_t unsigned __int64
 52 | #endif
 53 | 
 54 | /* Windows ssize_t compatibility */
 55 | #if defined(_WIN32) || defined(_WIN64)
 56 | #  if defined(_WIN64)
 57 |      typedef __int64 LONG_PTR;
 58 | #  else
 59 |      typedef long LONG_PTR;
 60 | #  endif
 61 |   typedef LONG_PTR SSIZE_T;
 62 |   typedef SSIZE_T ssize_t;
 63 | #endif
 64 | 
 65 | /* z/OS compatibility */
 66 | #ifdef __MVS__
 67 | typedef unsigned char u_int8_t;
 68 | typedef unsigned short u_int16_t;
 69 | typedef unsigned int u_int32_t;
 70 | typedef unsigned long long u_int64_t;
 71 | #endif
 72 | 
 73 | #define BCRYPT_VERSION '2'
 74 | #define BCRYPT_MAXSALT 16	/* Precomputation is just so nice */
 75 | #define BCRYPT_BLOCKS 6		/* Ciphertext blocks */
 76 | #define BCRYPT_MINROUNDS 16	/* we have log2(rounds) in salt */
 77 | 
 78 | /* Schneier specifies a maximum key length of 56 bytes.
 79 |  * This ensures that every key bit affects every cipher
 80 |  * bit.  However, the subkeys can hold up to 72 bytes.
 81 |  * Warning: For normal blowfish encryption only 56 bytes
 82 |  * of the key affect all cipherbits.
 83 |  */
 84 | 
 85 | #define BLF_N	16			/* Number of Subkeys */
 86 | #define BLF_MAXKEYLEN ((BLF_N-2)*4)	/* 448 bits */
 87 | #define BLF_MAXUTILIZED ((BLF_N+2)*4)	/* 576 bits */
 88 | 
 89 | #define _PASSWORD_LEN   128             /* max length, not counting NUL */
 90 | #define _SALT_LEN       32              /* max length */
 91 | 
 92 | /* Blowfish context */
 93 | typedef struct BlowfishContext {
 94 | 	u_int32_t S[4][256];	/* S-Boxes */
 95 | 	u_int32_t P[BLF_N + 2];	/* Subkeys */
 96 | } blf_ctx;
 97 | 
 98 | /* Raw access to customized Blowfish
 99 |  *	blf_key is just:
100 |  *	Blowfish_initstate( state )
101 |  *	Blowfish_expand0state( state, key, keylen )
102 |  */
103 | 
104 | void Blowfish_encipher(blf_ctx *, u_int32_t *, u_int32_t *);
105 | void Blowfish_decipher(blf_ctx *, u_int32_t *, u_int32_t *);
106 | void Blowfish_initstate(blf_ctx *);
107 | void Blowfish_expand0state(blf_ctx *, const u_int8_t *, u_int16_t);
108 | void Blowfish_expandstate
109 | (blf_ctx *, const u_int8_t *, u_int16_t, const u_int8_t *, u_int16_t);
110 | 
111 | /* Standard Blowfish */
112 | 
113 | void blf_key(blf_ctx *, const u_int8_t *, u_int16_t);
114 | void blf_enc(blf_ctx *, u_int32_t *, u_int16_t);
115 | void blf_dec(blf_ctx *, u_int32_t *, u_int16_t);
116 | 
117 | void blf_ecb_encrypt(blf_ctx *, u_int8_t *, u_int32_t);
118 | void blf_ecb_decrypt(blf_ctx *, u_int8_t *, u_int32_t);
119 | 
120 | void blf_cbc_encrypt(blf_ctx *, u_int8_t *, u_int8_t *, u_int32_t);
121 | void blf_cbc_decrypt(blf_ctx *, u_int8_t *, u_int8_t *, u_int32_t);
122 | 
123 | /* Converts u_int8_t to u_int32_t */
124 | u_int32_t Blowfish_stream2word(const u_int8_t *, u_int16_t , u_int16_t *);
125 | 
126 | /* bcrypt functions*/
127 | void bcrypt_gensalt(char, u_int8_t, u_int8_t*, char *);
128 | void node_bcrypt(const char *, size_t key_len, const char *, char *);
129 | void encode_salt(char *, u_int8_t *, char, u_int16_t, u_int8_t);
130 | u_int32_t bcrypt_get_rounds(const char *);
131 | 
132 | #endif


--------------------------------------------------------------------------------
/src/bcrypt.cpp:
--------------------------------------------------------------------------------
  1 | /*	$OpenBSD: bcrypt.c,v 1.31 2014/03/22 23:02:03 tedu Exp $	*/
  2 | 
  3 | /*
  4 |  * Copyright (c) 1997 Niels Provos <provos@umich.edu>
  5 |  *
  6 |  * Permission to use, copy, modify, and distribute this software for any
  7 |  * purpose with or without fee is hereby granted, provided that the above
  8 |  * copyright notice and this permission notice appear in all copies.
  9 |  *
 10 |  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 11 |  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 12 |  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 13 |  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 14 |  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 15 |  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 16 |  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 17 |  */
 18 | 
 19 | /* This password hashing algorithm was designed by David Mazieres
 20 |  * <dm@lcs.mit.edu> and works as follows:
 21 |  *
 22 |  * 1. state := InitState ()
 23 |  * 2. state := ExpandKey (state, salt, password)
 24 |  * 3. REPEAT rounds:
 25 |  *    	state := ExpandKey (state, 0, password)
 26 |  *    state := ExpandKey (state, 0, salt)
 27 |  * 4. ctext := "OrpheanBeholderScryDoubt"
 28 |  * 5. REPEAT 64:
 29 |  *    	ctext := Encrypt_ECB (state, ctext);
 30 |  * 6. RETURN Concatenate (salt, ctext);
 31 |  *
 32 |  */
 33 | 
 34 | #include <stdio.h>
 35 | #include <stdlib.h>
 36 | #include <stdint.h>
 37 | #include <sys/types.h>
 38 | #include <string.h>
 39 | 
 40 | #include "node_blf.h"
 41 | 
 42 | #include "bcrypt.h"
 43 | #include "openbsd.h"
 44 | 
 45 | #ifdef _WIN32
 46 | #define snprintf _snprintf
 47 | #endif
 48 | 
 49 | //#if !defined(__APPLE__) && !defined(__MACH__)
 50 | //#include "bsd/stdlib.h"
 51 | //#endif
 52 | 
 53 | /* This implementation is adaptable to current computing power.
 54 |  * You can have up to 2^31 rounds which should be enough for some
 55 |  * time to come.
 56 |  */
 57 | 
 58 | static void encode_base64(u_int8_t *, u_int8_t *, u_int16_t);
 59 | static void decode_base64(u_int8_t *, u_int16_t, u_int8_t *);
 60 | 
 61 | const static char* error = ":";
 62 | 
 63 | const static u_int8_t Base64Code[] =
 64 | "./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
 65 | 
 66 | const static u_int8_t index_64[128] = {
 67 | 	255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
 68 | 	255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
 69 | 	255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
 70 | 	255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
 71 | 	255, 255, 255, 255, 255, 255, 0, 1, 54, 55,
 72 | 	56, 57, 58, 59, 60, 61, 62, 63, 255, 255,
 73 | 	255, 255, 255, 255, 255, 2, 3, 4, 5, 6,
 74 | 	7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
 75 | 	17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
 76 | 	255, 255, 255, 255, 255, 255, 28, 29, 30,
 77 | 	31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
 78 | 	41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
 79 | 	51, 52, 53, 255, 255, 255, 255, 255
 80 | };
 81 | #define CHAR64(c)  ( (c) > 127 ? 255 : index_64[(c)])
 82 | 
 83 | static void
 84 | decode_base64(u_int8_t *buffer, u_int16_t len, u_int8_t *data)
 85 | {
 86 | 	u_int8_t *bp = buffer;
 87 | 	u_int8_t *p = data;
 88 | 	u_int8_t c1, c2, c3, c4;
 89 | 	while (bp < buffer + len) {
 90 | 		c1 = CHAR64(*p);
 91 | 		c2 = CHAR64(*(p + 1));
 92 | 
 93 | 		/* Invalid data */
 94 | 		if (c1 == 255 || c2 == 255)
 95 | 			break;
 96 | 
 97 | 		*bp++ = (c1 << 2) | ((c2 & 0x30) >> 4);
 98 | 		if (bp >= buffer + len)
 99 | 			break;
100 | 
101 | 		c3 = CHAR64(*(p + 2));
102 | 		if (c3 == 255)
103 | 			break;
104 | 
105 | 		*bp++ = ((c2 & 0x0f) << 4) | ((c3 & 0x3c) >> 2);
106 | 		if (bp >= buffer + len)
107 | 			break;
108 | 
109 | 		c4 = CHAR64(*(p + 3));
110 | 		if (c4 == 255)
111 | 			break;
112 | 		*bp++ = ((c3 & 0x03) << 6) | c4;
113 | 
114 | 		p += 4;
115 | 	}
116 | }
117 | 
118 | void
119 | encode_salt(char *salt, u_int8_t *csalt, char minor, u_int16_t clen, u_int8_t logr)
120 | {
121 | 	salt[0] = '$';
122 | 	salt[1] = BCRYPT_VERSION;
123 | 	salt[2] = minor;
124 | 	salt[3] = '$';
125 | 
126 |     // Max rounds are 31
127 | 	snprintf(salt + 4, 4, "%2.2u$", logr & 0x001F);
128 | 
129 | 	encode_base64((u_int8_t *) salt + 7, csalt, clen);
130 | }
131 | 
132 | 
133 | /* Generates a salt for this version of crypt.
134 |    Since versions may change. Keeping this here
135 |    seems sensible.
136 |    from: http://mail-index.netbsd.org/tech-crypto/2002/05/24/msg000204.html
137 | */
138 | void
139 | bcrypt_gensalt(char minor, u_int8_t log_rounds, u_int8_t *seed, char *gsalt)
140 | {
141 | 	if (log_rounds < 4)
142 | 		log_rounds = 4;
143 | 	else if (log_rounds > 31)
144 | 		log_rounds = 31;
145 | 
146 | 	encode_salt(gsalt, seed, minor, BCRYPT_MAXSALT, log_rounds);
147 | }
148 | 
149 | /* We handle $Vers$log2(NumRounds)$salt+passwd$
150 |    i.e. $2$04$iwouldntknowwhattosayetKdJ6iFtacBqJdKe6aW7ou */
151 | 
152 | void
153 | node_bcrypt(const char *key, size_t key_len, const char *salt, char *encrypted)
154 | {
155 | 	blf_ctx state;
156 | 	u_int32_t rounds, i, k;
157 | 	u_int16_t j;
158 | 	u_int8_t salt_len, logr, minor;
159 | 	u_int8_t ciphertext[4 * BCRYPT_BLOCKS+1] = "OrpheanBeholderScryDoubt";
160 | 	u_int8_t csalt[BCRYPT_MAXSALT];
161 | 	u_int32_t cdata[BCRYPT_BLOCKS];
162 | 	int n;
163 | 
164 | 	/* Discard "$" identifier */
165 | 	salt++;
166 | 
167 | 	if (*salt > BCRYPT_VERSION) {
168 | 		/* How do I handle errors ? Return ':' */
169 | 		strcpy(encrypted, error);
170 | 		return;
171 | 	}
172 | 
173 | 	/* Check for minor versions */
174 | 	if (salt[1] != '$') {
175 | 		 switch (salt[1]) {
176 | 		 case 'a': /* 'ab' should not yield the same as 'abab' */
177 | 		 case 'b': /* cap input length at 72 bytes */
178 | 			 minor = salt[1];
179 | 			 salt++;
180 | 			 break;
181 | 		 default:
182 | 			 strcpy(encrypted, error);
183 | 			 return;
184 | 		 }
185 | 	} else
186 | 		 minor = 0;
187 | 
188 | 	/* Discard version + "$" identifier */
189 | 	salt += 2;
190 | 
191 | 	if (salt[2] != '$') {
192 | 		/* Out of sync with passwd entry */
193 | 		strcpy(encrypted, error);
194 | 		return;
195 | 	}
196 | 
197 | 	/* Computer power doesn't increase linear, 2^x should be fine */
198 | 	n = atoi(salt);
199 | 	if (n > 31 || n < 0) {
200 | 		strcpy(encrypted, error);
201 | 		return;
202 | 	}
203 | 	logr = (u_int8_t)n;
204 | 	if ((rounds = (u_int32_t) 1 << logr) < BCRYPT_MINROUNDS) {
205 | 		strcpy(encrypted, error);
206 | 		return;
207 | 	}
208 | 
209 | 	/* Discard num rounds + "$" identifier */
210 | 	salt += 3;
211 | 
212 | 	if (strlen(salt) * 3 / 4 < BCRYPT_MAXSALT) {
213 | 		strcpy(encrypted, error);
214 | 		return;
215 | 	}
216 | 
217 | 	/* We dont want the base64 salt but the raw data */
218 | 	decode_base64(csalt, BCRYPT_MAXSALT, (u_int8_t *) salt);
219 | 	salt_len = BCRYPT_MAXSALT;
220 | 	if (minor <= 'a')
221 | 		key_len = (u_int8_t)(key_len + (minor >= 'a' ? 1 : 0));
222 | 	else
223 | 	{
224 | 		/* cap key_len at the actual maximum supported
225 | 		* length here to avoid integer wraparound */
226 | 		if (key_len > 72)
227 | 			key_len = 72;
228 | 		key_len++; /* include the NUL */
229 | 	}
230 | 
231 | 
232 | 	/* Setting up S-Boxes and Subkeys */
233 | 	Blowfish_initstate(&state);
234 | 	Blowfish_expandstate(&state, csalt, salt_len,
235 | 		(u_int8_t *) key, key_len);
236 | 	for (k = 0; k < rounds; k++) {
237 | 		Blowfish_expand0state(&state, (u_int8_t *) key, key_len);
238 | 		Blowfish_expand0state(&state, csalt, salt_len);
239 | 	}
240 | 
241 |  	/* This can be precomputed later */
242 | 	j = 0;
243 | 	for (i = 0; i < BCRYPT_BLOCKS; i++)
244 | 		cdata[i] = Blowfish_stream2word(ciphertext, 4 * BCRYPT_BLOCKS, &j);
245 | 
246 | 	/* Now do the encryption */
247 | 	for (k = 0; k < 64; k++)
248 | 		blf_enc(&state, cdata, BCRYPT_BLOCKS / 2);
249 | 
250 | 	for (i = 0; i < BCRYPT_BLOCKS; i++) {
251 | 		ciphertext[4 * i + 3] = cdata[i] & 0xff;
252 | 		cdata[i] = cdata[i] >> 8;
253 | 		ciphertext[4 * i + 2] = cdata[i] & 0xff;
254 | 		cdata[i] = cdata[i] >> 8;
255 | 		ciphertext[4 * i + 1] = cdata[i] & 0xff;
256 | 		cdata[i] = cdata[i] >> 8;
257 | 		ciphertext[4 * i + 0] = cdata[i] & 0xff;
258 | 	}
259 | 
260 | 	i = 0;
261 | 	encrypted[i++] = '$';
262 | 	encrypted[i++] = BCRYPT_VERSION;
263 | 	if (minor)
264 | 		encrypted[i++] = minor;
265 | 	encrypted[i++] = '$';
266 | 
267 | 	snprintf(encrypted + i, 4, "%2.2u$", logr & 0x001F);
268 | 
269 | 	encode_base64((u_int8_t *) encrypted + i + 3, csalt, BCRYPT_MAXSALT);
270 | 	encode_base64((u_int8_t *) encrypted + strlen(encrypted), ciphertext,
271 | 		4 * BCRYPT_BLOCKS - 1);
272 | 	memset(&state, 0, sizeof(state));
273 | 	memset(ciphertext, 0, sizeof(ciphertext));
274 | 	memset(csalt, 0, sizeof(csalt));
275 | 	memset(cdata, 0, sizeof(cdata));
276 | }
277 | 
278 | u_int32_t bcrypt_get_rounds(const char * hash)
279 | {
280 |   /* skip past the leading "$" */
281 |   if (!hash || *(hash++) != '$') return 0;
282 | 
283 |   /* skip past version */
284 |   if (0 == (*hash++)) return 0;
285 |   if (*hash && *hash != '$') hash++;
286 |   if (*hash++ != '$') return 0;
287 | 
288 |   return  atoi(hash);
289 | }
290 | 
291 | static void
292 | encode_base64(u_int8_t *buffer, u_int8_t *data, u_int16_t len)
293 | {
294 | 	u_int8_t *bp = buffer;
295 | 	u_int8_t *p = data;
296 | 	u_int8_t c1, c2;
297 | 	while (p < data + len) {
298 | 		c1 = *p++;
299 | 		*bp++ = Base64Code[(c1 >> 2)];
300 | 		c1 = (c1 & 0x03) << 4;
301 | 		if (p >= data + len) {
302 | 			*bp++ = Base64Code[c1];
303 | 			break;
304 | 		}
305 | 		c2 = *p++;
306 | 		c1 |= (c2 >> 4) & 0x0f;
307 | 		*bp++ = Base64Code[c1];
308 | 		c1 = (c2 & 0x0f) << 2;
309 | 		if (p >= data + len) {
310 | 			*bp++ = Base64Code[c1];
311 | 			break;
312 | 		}
313 | 		c2 = *p++;
314 | 		c1 |= (c2 >> 6) & 0x03;
315 | 		*bp++ = Base64Code[c1];
316 | 		*bp++ = Base64Code[c2 & 0x3f];
317 | 	}
318 | 	*bp = '\0';
319 | }
320 | 
321 | std::string bcrypt::generateHash(const std::string &password, unsigned int rounds) {
322 |     char salt[_SALT_LEN];
323 | 
324 |     unsigned char seed[17]{};
325 | 	arc4random_init();
326 | 	
327 |     arc4random_buf(seed, 16);
328 | 
329 |     bcrypt_gensalt('b', rounds, seed, salt);
330 | 
331 |     std::string hash(61, '\0');
332 |     node_bcrypt(password.c_str(), password.size(), salt, &hash[0]);
333 |     hash.resize(60);
334 |     return hash;
335 | }
336 | 
337 | bool bcrypt::validatePassword(const std::string &password, const std::string &hash) {
338 |     std::string got(61, '\0');
339 |     node_bcrypt(password.c_str(), password.size(), hash.c_str(), &got[0]);
340 |     got.resize(60);
341 |     return hash == got;
342 | }
343 | 


--------------------------------------------------------------------------------
/src/blowfish.cpp:
--------------------------------------------------------------------------------
  1 | /* $OpenBSD: blowfish.c,v 1.18 2004/11/02 17:23:26 hshoexer Exp $ */
  2 | /*
  3 |  * Blowfish block cipher for OpenBSD
  4 |  * Copyright 1997 Niels Provos <provos@physnet.uni-hamburg.de>
  5 |  * All rights reserved.
  6 |  *
  7 |  * Implementation advice by David Mazieres <dm@lcs.mit.edu>.
  8 |  *
  9 |  * Redistribution and use in source and binary forms, with or without
 10 |  * modification, are permitted provided that the following conditions
 11 |  * are met:
 12 |  * 1. Redistributions of source code must retain the above copyright
 13 |  *    notice, this list of conditions and the following disclaimer.
 14 |  * 2. Redistributions in binary form must reproduce the above copyright
 15 |  *    notice, this list of conditions and the following disclaimer in the
 16 |  *    documentation and/or other materials provided with the distribution.
 17 |  * 3. All advertising materials mentioning features or use of this software
 18 |  *    must display the following acknowledgement:
 19 |  *      This product includes software developed by Niels Provos.
 20 |  * 4. The name of the author may not be used to endorse or promote products
 21 |  *    derived from this software without specific prior written permission.
 22 |  *
 23 |  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 24 |  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 25 |  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 26 |  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 27 |  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 28 |  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 29 |  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 30 |  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 31 |  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 32 |  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 33 |  */
 34 | 
 35 | /*
 36 |  * This code is derived from section 14.3 and the given source
 37 |  * in section V of Applied Cryptography, second edition.
 38 |  * Blowfish is an unpatented fast block cipher designed by
 39 |  * Bruce Schneier.
 40 |  */
 41 | 
 42 | #include "node_blf.h"
 43 | 
 44 | #undef inline
 45 | #ifdef __GNUC__
 46 | #define inline __inline
 47 | #else				/* !__GNUC__ */
 48 | #define inline
 49 | #endif				/* !__GNUC__ */
 50 | 
 51 | /* Function for Feistel Networks */
 52 | 
 53 | #define F(s, x) ((((s)[        (((x)>>24)&0xFF)]  \
 54 | 		 + (s)[0x100 + (((x)>>16)&0xFF)]) \
 55 | 		 ^ (s)[0x200 + (((x)>> 8)&0xFF)]) \
 56 | 		 + (s)[0x300 + ( (x)     &0xFF)])
 57 | 
 58 | #define BLFRND(s,p,i,j,n) (i ^= F(s,j) ^ (p)[n])
 59 | 
 60 | void
 61 | Blowfish_encipher(blf_ctx *c, u_int32_t *xl, u_int32_t *xr)
 62 | {
 63 | 	u_int32_t Xl;
 64 | 	u_int32_t Xr;
 65 | 	u_int32_t *s = c->S[0];
 66 | 	u_int32_t *p = c->P;
 67 | 
 68 | 	Xl = *xl;
 69 | 	Xr = *xr;
 70 | 
 71 | 	Xl ^= p[0];
 72 | 	BLFRND(s, p, Xr, Xl, 1); BLFRND(s, p, Xl, Xr, 2);
 73 | 	BLFRND(s, p, Xr, Xl, 3); BLFRND(s, p, Xl, Xr, 4);
 74 | 	BLFRND(s, p, Xr, Xl, 5); BLFRND(s, p, Xl, Xr, 6);
 75 | 	BLFRND(s, p, Xr, Xl, 7); BLFRND(s, p, Xl, Xr, 8);
 76 | 	BLFRND(s, p, Xr, Xl, 9); BLFRND(s, p, Xl, Xr, 10);
 77 | 	BLFRND(s, p, Xr, Xl, 11); BLFRND(s, p, Xl, Xr, 12);
 78 | 	BLFRND(s, p, Xr, Xl, 13); BLFRND(s, p, Xl, Xr, 14);
 79 | 	BLFRND(s, p, Xr, Xl, 15); BLFRND(s, p, Xl, Xr, 16);
 80 | 
 81 | 	*xl = Xr ^ p[17];
 82 | 	*xr = Xl;
 83 | }
 84 | 
 85 | void
 86 | Blowfish_decipher(blf_ctx *c, u_int32_t *xl, u_int32_t *xr)
 87 | {
 88 | 	u_int32_t Xl;
 89 | 	u_int32_t Xr;
 90 | 	u_int32_t *s = c->S[0];
 91 | 	u_int32_t *p = c->P;
 92 | 
 93 | 	Xl = *xl;
 94 | 	Xr = *xr;
 95 | 
 96 | 	Xl ^= p[17];
 97 | 	BLFRND(s, p, Xr, Xl, 16); BLFRND(s, p, Xl, Xr, 15);
 98 | 	BLFRND(s, p, Xr, Xl, 14); BLFRND(s, p, Xl, Xr, 13);
 99 | 	BLFRND(s, p, Xr, Xl, 12); BLFRND(s, p, Xl, Xr, 11);
100 | 	BLFRND(s, p, Xr, Xl, 10); BLFRND(s, p, Xl, Xr, 9);
101 | 	BLFRND(s, p, Xr, Xl, 8); BLFRND(s, p, Xl, Xr, 7);
102 | 	BLFRND(s, p, Xr, Xl, 6); BLFRND(s, p, Xl, Xr, 5);
103 | 	BLFRND(s, p, Xr, Xl, 4); BLFRND(s, p, Xl, Xr, 3);
104 | 	BLFRND(s, p, Xr, Xl, 2); BLFRND(s, p, Xl, Xr, 1);
105 | 
106 | 	*xl = Xr ^ p[0];
107 | 	*xr = Xl;
108 | }
109 | 
110 | void
111 | Blowfish_initstate(blf_ctx *c)
112 | {
113 | 	/* P-box and S-box tables initialized with digits of Pi */
114 | 
115 | 	static const blf_ctx initstate =
116 | 	{ {
117 | 		{
118 | 			0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
119 | 			0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
120 | 			0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
121 | 			0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
122 | 			0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
123 | 			0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
124 | 			0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
125 | 			0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
126 | 			0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
127 | 			0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
128 | 			0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce,
129 | 			0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
130 | 			0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
131 | 			0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
132 | 			0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
133 | 			0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
134 | 			0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88,
135 | 			0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
136 | 			0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
137 | 			0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
138 | 			0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
139 | 			0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
140 | 			0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88,
141 | 			0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
142 | 			0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
143 | 			0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
144 | 			0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
145 | 			0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
146 | 			0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba,
147 | 			0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
148 | 			0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
149 | 			0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
150 | 			0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
151 | 			0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
152 | 			0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
153 | 			0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
154 | 			0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
155 | 			0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
156 | 			0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
157 | 			0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
158 | 			0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0,
159 | 			0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
160 | 			0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
161 | 			0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
162 | 			0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
163 | 			0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
164 | 			0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7,
165 | 			0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
166 | 			0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
167 | 			0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
168 | 			0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
169 | 			0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
170 | 			0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477,
171 | 			0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
172 | 			0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
173 | 			0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
174 | 			0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
175 | 			0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
176 | 			0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41,
177 | 			0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
178 | 			0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
179 | 			0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
180 | 			0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
181 | 		0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a},
182 | 		{
183 | 			0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623,
184 | 			0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
185 | 			0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
186 | 			0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
187 | 			0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
188 | 			0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
189 | 			0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e,
190 | 			0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
191 | 			0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
192 | 			0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
193 | 			0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff,
194 | 			0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
195 | 			0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701,
196 | 			0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
197 | 			0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
198 | 			0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
199 | 			0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf,
200 | 			0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
201 | 			0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e,
202 | 			0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
203 | 			0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
204 | 			0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
205 | 			0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16,
206 | 			0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
207 | 			0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
208 | 			0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
209 | 			0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
210 | 			0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
211 | 			0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f,
212 | 			0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
213 | 			0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4,
214 | 			0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
215 | 			0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
216 | 			0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
217 | 			0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
218 | 			0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
219 | 			0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510,
220 | 			0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
221 | 			0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
222 | 			0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
223 | 			0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50,
224 | 			0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
225 | 			0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8,
226 | 			0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
227 | 			0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
228 | 			0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
229 | 			0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128,
230 | 			0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
231 | 			0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0,
232 | 			0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
233 | 			0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
234 | 			0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
235 | 			0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3,
236 | 			0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
237 | 			0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
238 | 			0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
239 | 			0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
240 | 			0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
241 | 			0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735,
242 | 			0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
243 | 			0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9,
244 | 			0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
245 | 			0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
246 | 		0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7},
247 | 		{
248 | 			0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934,
249 | 			0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
250 | 			0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
251 | 			0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
252 | 			0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
253 | 			0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
254 | 			0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a,
255 | 			0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
256 | 			0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
257 | 			0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
258 | 			0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42,
259 | 			0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
260 | 			0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2,
261 | 			0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
262 | 			0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
263 | 			0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
264 | 			0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33,
265 | 			0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
266 | 			0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3,
267 | 			0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
268 | 			0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
269 | 			0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
270 | 			0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b,
271 | 			0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
272 | 			0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
273 | 			0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
274 | 			0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
275 | 			0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
276 | 			0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37,
277 | 			0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
278 | 			0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804,
279 | 			0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
280 | 			0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
281 | 			0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
282 | 			0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
283 | 			0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
284 | 			0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350,
285 | 			0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
286 | 			0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
287 | 			0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
288 | 			0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d,
289 | 			0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
290 | 			0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f,
291 | 			0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
292 | 			0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
293 | 			0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
294 | 			0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2,
295 | 			0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
296 | 			0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e,
297 | 			0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
298 | 			0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
299 | 			0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
300 | 			0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52,
301 | 			0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
302 | 			0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
303 | 			0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
304 | 			0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
305 | 			0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
306 | 			0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24,
307 | 			0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
308 | 			0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4,
309 | 			0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
310 | 			0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
311 | 		0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0},
312 | 		{
313 | 			0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b,
314 | 			0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
315 | 			0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
316 | 			0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
317 | 			0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
318 | 			0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
319 | 			0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304,
320 | 			0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
321 | 			0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
322 | 			0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
323 | 			0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9,
324 | 			0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
325 | 			0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593,
326 | 			0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
327 | 			0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
328 | 			0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
329 | 			0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b,
330 | 			0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
331 | 			0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c,
332 | 			0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
333 | 			0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
334 | 			0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
335 | 			0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb,
336 | 			0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
337 | 			0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
338 | 			0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
339 | 			0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
340 | 			0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
341 | 			0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae,
342 | 			0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
343 | 			0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5,
344 | 			0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
345 | 			0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
346 | 			0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
347 | 			0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84,
348 | 			0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
349 | 			0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8,
350 | 			0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
351 | 			0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
352 | 			0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
353 | 			0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38,
354 | 			0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
355 | 			0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c,
356 | 			0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
357 | 			0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
358 | 			0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
359 | 			0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964,
360 | 			0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
361 | 			0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8,
362 | 			0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
363 | 			0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
364 | 			0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
365 | 			0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02,
366 | 			0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
367 | 			0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
368 | 			0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
369 | 			0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
370 | 			0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
371 | 			0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0,
372 | 			0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
373 | 			0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e,
374 | 			0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
375 | 			0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
376 | 		0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6}
377 | 	},
378 | 	{
379 | 		0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
380 | 		0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
381 | 		0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
382 | 		0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
383 | 		0x9216d5d9, 0x8979fb1b
384 | 	} };
385 | 
386 | 	*c = initstate;
387 | }
388 | 
389 | u_int32_t
390 | Blowfish_stream2word(const u_int8_t *data, u_int16_t databytes,
391 |     u_int16_t *current)
392 | {
393 | 	u_int8_t i;
394 | 	u_int16_t j;
395 | 	u_int32_t temp;
396 | 
397 | 	temp = 0x00000000;
398 | 	j = *current;
399 | 
400 | 	for (i = 0; i < 4; i++, j++) {
401 | 		if (j >= databytes)
402 | 			j = 0;
403 | 		temp = (temp << 8) | data[j];
404 | 	}
405 | 
406 | 	*current = j;
407 | 	return temp;
408 | }
409 | 
410 | void
411 | Blowfish_expand0state(blf_ctx *c, const u_int8_t *key, u_int16_t keybytes)
412 | {
413 | 	u_int16_t i;
414 | 	u_int16_t j;
415 | 	u_int16_t k;
416 | 	u_int32_t temp;
417 | 	u_int32_t datal;
418 | 	u_int32_t datar;
419 | 
420 | 	j = 0;
421 | 	for (i = 0; i < BLF_N + 2; i++) {
422 | 		/* Extract 4 int8 to 1 int32 from keystream */
423 | 		temp = Blowfish_stream2word(key, keybytes, &j);
424 | 		c->P[i] = c->P[i] ^ temp;
425 | 	}
426 | 
427 | 	j = 0;
428 | 	datal = 0x00000000;
429 | 	datar = 0x00000000;
430 | 	for (i = 0; i < BLF_N + 2; i += 2) {
431 | 		Blowfish_encipher(c, &datal, &datar);
432 | 
433 | 		c->P[i] = datal;
434 | 		c->P[i + 1] = datar;
435 | 	}
436 | 
437 | 	for (i = 0; i < 4; i++) {
438 | 		for (k = 0; k < 256; k += 2) {
439 | 			Blowfish_encipher(c, &datal, &datar);
440 | 
441 | 			c->S[i][k] = datal;
442 | 			c->S[i][k + 1] = datar;
443 | 		}
444 | 	}
445 | }
446 | 
447 | 
448 | void
449 | Blowfish_expandstate(blf_ctx *c, const u_int8_t *data, u_int16_t databytes,
450 |     const u_int8_t *key, u_int16_t keybytes)
451 | {
452 | 	u_int16_t i;
453 | 	u_int16_t j;
454 | 	u_int16_t k;
455 | 	u_int32_t temp;
456 | 	u_int32_t datal;
457 | 	u_int32_t datar;
458 | 
459 | 	j = 0;
460 | 	for (i = 0; i < BLF_N + 2; i++) {
461 | 		/* Extract 4 int8 to 1 int32 from keystream */
462 | 		temp = Blowfish_stream2word(key, keybytes, &j);
463 | 		c->P[i] = c->P[i] ^ temp;
464 | 	}
465 | 
466 | 	j = 0;
467 | 	datal = 0x00000000;
468 | 	datar = 0x00000000;
469 | 	for (i = 0; i < BLF_N + 2; i += 2) {
470 | 		datal ^= Blowfish_stream2word(data, databytes, &j);
471 | 		datar ^= Blowfish_stream2word(data, databytes, &j);
472 | 		Blowfish_encipher(c, &datal, &datar);
473 | 
474 | 		c->P[i] = datal;
475 | 		c->P[i + 1] = datar;
476 | 	}
477 | 
478 | 	for (i = 0; i < 4; i++) {
479 | 		for (k = 0; k < 256; k += 2) {
480 | 			datal ^= Blowfish_stream2word(data, databytes, &j);
481 | 			datar ^= Blowfish_stream2word(data, databytes, &j);
482 | 			Blowfish_encipher(c, &datal, &datar);
483 | 
484 | 			c->S[i][k] = datal;
485 | 			c->S[i][k + 1] = datar;
486 | 		}
487 | 	}
488 | 
489 | }
490 | 
491 | void
492 | blf_key(blf_ctx *c, const u_int8_t *k, u_int16_t len)
493 | {
494 | 	/* Initialize S-boxes and subkeys with Pi */
495 | 	Blowfish_initstate(c);
496 | 
497 | 	/* Transform S-boxes and subkeys with key */
498 | 	Blowfish_expand0state(c, k, len);
499 | }
500 | 
501 | void
502 | blf_enc(blf_ctx *c, u_int32_t *data, u_int16_t blocks)
503 | {
504 | 	u_int32_t *d;
505 | 	u_int16_t i;
506 | 
507 | 	d = data;
508 | 	for (i = 0; i < blocks; i++) {
509 | 		Blowfish_encipher(c, d, d + 1);
510 | 		d += 2;
511 | 	}
512 | }
513 | 
514 | void
515 | blf_dec(blf_ctx *c, u_int32_t *data, u_int16_t blocks)
516 | {
517 | 	u_int32_t *d;
518 | 	u_int16_t i;
519 | 
520 | 	d = data;
521 | 	for (i = 0; i < blocks; i++) {
522 | 		Blowfish_decipher(c, d, d + 1);
523 | 		d += 2;
524 | 	}
525 | }
526 | 
527 | void
528 | blf_ecb_encrypt(blf_ctx *c, u_int8_t *data, u_int32_t len)
529 | {
530 | 	u_int32_t l, r;
531 | 	u_int32_t i;
532 | 
533 | 	for (i = 0; i < len; i += 8) {
534 | 		l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
535 | 		r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
536 | 		Blowfish_encipher(c, &l, &r);
537 | 		data[0] = l >> 24 & 0xff;
538 | 		data[1] = l >> 16 & 0xff;
539 | 		data[2] = l >> 8 & 0xff;
540 | 		data[3] = l & 0xff;
541 | 		data[4] = r >> 24 & 0xff;
542 | 		data[5] = r >> 16 & 0xff;
543 | 		data[6] = r >> 8 & 0xff;
544 | 		data[7] = r & 0xff;
545 | 		data += 8;
546 | 	}
547 | }
548 | 
549 | void
550 | blf_ecb_decrypt(blf_ctx *c, u_int8_t *data, u_int32_t len)
551 | {
552 | 	u_int32_t l, r;
553 | 	u_int32_t i;
554 | 
555 | 	for (i = 0; i < len; i += 8) {
556 | 		l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
557 | 		r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
558 | 		Blowfish_decipher(c, &l, &r);
559 | 		data[0] = l >> 24 & 0xff;
560 | 		data[1] = l >> 16 & 0xff;
561 | 		data[2] = l >> 8 & 0xff;
562 | 		data[3] = l & 0xff;
563 | 		data[4] = r >> 24 & 0xff;
564 | 		data[5] = r >> 16 & 0xff;
565 | 		data[6] = r >> 8 & 0xff;
566 | 		data[7] = r & 0xff;
567 | 		data += 8;
568 | 	}
569 | }
570 | 
571 | void
572 | blf_cbc_encrypt(blf_ctx *c, u_int8_t *iv, u_int8_t *data, u_int32_t len)
573 | {
574 | 	u_int32_t l, r;
575 | 	u_int32_t i, j;
576 | 
577 | 	for (i = 0; i < len; i += 8) {
578 | 		for (j = 0; j < 8; j++)
579 | 			data[j] ^= iv[j];
580 | 		l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
581 | 		r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
582 | 		Blowfish_encipher(c, &l, &r);
583 | 		data[0] = l >> 24 & 0xff;
584 | 		data[1] = l >> 16 & 0xff;
585 | 		data[2] = l >> 8 & 0xff;
586 | 		data[3] = l & 0xff;
587 | 		data[4] = r >> 24 & 0xff;
588 | 		data[5] = r >> 16 & 0xff;
589 | 		data[6] = r >> 8 & 0xff;
590 | 		data[7] = r & 0xff;
591 | 		iv = data;
592 | 		data += 8;
593 | 	}
594 | }
595 | 
596 | void
597 | blf_cbc_decrypt(blf_ctx *c, u_int8_t *iva, u_int8_t *data, u_int32_t len)
598 | {
599 | 	u_int32_t l, r;
600 | 	u_int8_t *iv;
601 | 	u_int32_t i, j;
602 | 
603 | 	iv = data + len - 16;
604 | 	data = data + len - 8;
605 | 	for (i = len - 8; i >= 8; i -= 8) {
606 | 		l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
607 | 		r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
608 | 		Blowfish_decipher(c, &l, &r);
609 | 		data[0] = l >> 24 & 0xff;
610 | 		data[1] = l >> 16 & 0xff;
611 | 		data[2] = l >> 8 & 0xff;
612 | 		data[3] = l & 0xff;
613 | 		data[4] = r >> 24 & 0xff;
614 | 		data[5] = r >> 16 & 0xff;
615 | 		data[6] = r >> 8 & 0xff;
616 | 		data[7] = r & 0xff;
617 | 		for (j = 0; j < 8; j++)
618 | 			data[j] ^= iv[j];
619 | 		iv -= 8;
620 | 		data -= 8;
621 | 	}
622 | 	l = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3];
623 | 	r = data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7];
624 | 	Blowfish_decipher(c, &l, &r);
625 | 	data[0] = l >> 24 & 0xff;
626 | 	data[1] = l >> 16 & 0xff;
627 | 	data[2] = l >> 8 & 0xff;
628 | 	data[3] = l & 0xff;
629 | 	data[4] = r >> 24 & 0xff;
630 | 	data[5] = r >> 16 & 0xff;
631 | 	data[6] = r >> 8 & 0xff;
632 | 	data[7] = r & 0xff;
633 | 	for (j = 0; j < 8; j++)
634 | 		data[j] ^= iva[j];
635 | }
636 | 
637 | #if 0
638 | void
639 | report(u_int32_t data[], u_int16_t len)
640 | {
641 | 	u_int16_t i;
642 | 	for (i = 0; i < len; i += 2)
643 | 		printf("Block %0hd: %08lx %08lx.\n",
644 | 		    i / 2, data[i], data[i + 1]);
645 | }
646 | void
647 | main(void)
648 | {
649 | 
650 | 	blf_ctx c;
651 | 	char    key[] = "AAAAA";
652 | 	char    key2[] = "abcdefghijklmnopqrstuvwxyz";
653 | 
654 | 	u_int32_t data[10];
655 | 	u_int32_t data2[] =
656 | 	{0x424c4f57l, 0x46495348l};
657 | 
658 | 	u_int16_t i;
659 | 
660 | 	/* First test */
661 | 	for (i = 0; i < 10; i++)
662 | 		data[i] = i;
663 | 
664 | 	blf_key(&c, (u_int8_t *) key, 5);
665 | 	blf_enc(&c, data, 5);
666 | 	blf_dec(&c, data, 1);
667 | 	blf_dec(&c, data + 2, 4);
668 | 	printf("Should read as 0 - 9.\n");
669 | 	report(data, 10);
670 | 
671 | 	/* Second test */
672 | 	blf_key(&c, (u_int8_t *) key2, strlen(key2));
673 | 	blf_enc(&c, data2, 1);
674 | 	printf("\nShould read as: 0x324ed0fe 0xf413a203.\n");
675 | 	report(data2, 2);
676 | 	blf_dec(&c, data2, 1);
677 | 	report(data2, 2);
678 | }
679 | #endif


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