├── .gitignore ├── gen-tables.sh ├── UNLICENSE ├── Makefile ├── blowfish.h ├── w32-compat ├── getopt.h └── unistd.h ├── blowpipe.1 ├── README.md ├── tests ├── vectors2.h └── tests.c ├── blowpipe.c └── blowfish.c /.gitignore: -------------------------------------------------------------------------------- 1 | blowpipe 2 | tests/tests 3 | tests/key.dat 4 | -------------------------------------------------------------------------------- /gen-tables.sh: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | 3 | # This script computes the Blowfish initialization tables using POSIX 4 | # bc, or using the pi command if it is available (which is much faster 5 | # than GNU bc). 6 | 7 | set -e 8 | 9 | if $(command -v pi > /dev/null 2>&1); then 10 | pi=$(echo "obase=16; $(pi 10040)" | bc | tr -d '\n\\' | tail -c+3) 11 | else 12 | cmd='obase=16; scale=10040; a(1) * 4' 13 | pi="$(echo "$cmd" | bc -l | tr -d '\n\\' | tail -c+3)" 14 | fi 15 | ints="$(echo $pi | tr A-F a-f | head -c8336 | sed -r 's/.{8}/0x\0,\\n/g')" 16 | 17 | echo 'static const uint32_t blowfish_p[] = {' 18 | printf $ints | head -n18 | \ 19 | paste -d ' ' - - - - | sed 's/^/ /g' 20 | echo '};' 21 | echo 22 | 23 | echo 'static const uint32_t blowfish_s[] = {' 24 | printf $ints | tail -n+19 | head -n1024 | \ 25 | paste -d ' ' - - - - | sed 's/^/ /g' 26 | echo '};' 27 | -------------------------------------------------------------------------------- /UNLICENSE: -------------------------------------------------------------------------------- 1 | This is free and unencumbered software released into the public domain. 2 | 3 | Anyone is free to copy, modify, publish, use, compile, sell, or 4 | distribute this software, either in source code form or as a compiled 5 | binary, for any purpose, commercial or non-commercial, and by any 6 | means. 7 | 8 | In jurisdictions that recognize copyright laws, the author or authors 9 | of this software dedicate any and all copyright interest in the 10 | software to the public domain. We make this dedication for the benefit 11 | of the public at large and to the detriment of our heirs and 12 | successors. We intend this dedication to be an overt act of 13 | relinquishment in perpetuity of all present and future rights to this 14 | software under copyright law. 15 | 16 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 17 | EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 18 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 19 | IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 | OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 | ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 | OTHER DEALINGS IN THE SOFTWARE. 23 | 24 | For more information, please refer to 25 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | .POSIX: 2 | .SUFFIXES: 3 | CC = cc -std=c99 4 | CFLAGS = -Wall -Wextra -O3 -g3 5 | PREFIX = /usr/local 6 | EXEEXT = 7 | 8 | all: blowpipe$(EXEEXT) 9 | 10 | blowpipe$(EXEEXT): blowpipe.c blowfish.c blowfish.h w32-compat/unistd.h 11 | $(CC) $(LDFLAGS) $(CFLAGS) -o $@ blowpipe.c blowfish.c 12 | 13 | tests/tests$(EXEEXT): tests/tests.c blowfish.c blowfish.h tests/vectors2.h 14 | $(CC) $(LDFLAGS) $(CFLAGS) -o $@ tests/tests.c blowfish.c 15 | 16 | tests/key.dat: 17 | printf "helloworld" > $@ 18 | 19 | blowpipe-cli.c: blowpipe.c blowfish.c blowfish.h w32-compat/unistd.h 20 | echo '#define _POSIX_C_SOURCE 200112L' | \ 21 | cat - blowfish.h w32-compat/getopt.h w32-compat/unistd.h \ 22 | blowfish.c blowpipe.c | \ 23 | sed -r 's@^(#include +".+)@/* \1 */@g' > $@ 24 | 25 | test: check 26 | check: tests/tests$(EXEEXT) tests/key.dat blowpipe$(EXEEXT) 27 | tests/tests$(EXEEXT) 28 | for len in $$(seq 0 10) $$(seq 65500 65600); do \ 29 | head -c$$len /dev/urandom | \ 30 | ./blowpipe$(EXEEXT) -E -c3 -ktests/key.dat | \ 31 | ./blowpipe$(EXEEXT) -D -ktests/key.dat > /dev/null; \ 32 | done 33 | 34 | amalgamation: blowpipe-cli.c 35 | 36 | install: blowpipe$(EXEEXT) blowpipe.1 37 | mkdir -p $(DESTDIR)$(PREFIX)/bin 38 | mkdir -p $(DESTDIR)$(PREFIX)/share/man/man1 39 | cp -f blowpipe$(EXEEXT) $(DESTDIR)$(PREFIX)/bin 40 | gzip < blowpipe.1 > $(DESTDIR)$(PREFIX)/share/man/man1/blowpipe.1.gz 41 | 42 | clean: 43 | rm -f blowpipe$(EXEEXT) tests/tests$(EXEEXT) 44 | rm -f tests/key.dat blowpipe-cli.c 45 | -------------------------------------------------------------------------------- /blowfish.h: -------------------------------------------------------------------------------- 1 | /* C99 Blowfish implementation 2 | * 3 | * This is free and unencumbered software released into the public domain. 4 | */ 5 | #ifndef BLOWFISH_H 6 | #define BLOWFISH_H 7 | 8 | #include 9 | 10 | #define BLOWFISH_BLOCK_LENGTH 8 11 | #define BLOWFISH_SALT_LENGTH 16 12 | #define BLOWFISH_DIGEST_LENGTH 24 13 | #define BLOWFISH_MAX_KEY_LENGTH 72 14 | #define BLOWFISH_MAX_COST 63 15 | 16 | struct blowfish { 17 | uint32_t p[18]; 18 | uint32_t s[4][256]; 19 | }; 20 | 21 | /* Initialize a cipher context with the given key. 22 | * 23 | * The maximum key length is 72 bytes. Generally the key length should 24 | * not exceed 56 bytes since the last 16 bytes do not affect every bit 25 | * of each subkey. 26 | */ 27 | void blowfish_init(struct blowfish *, const void *key, int len); 28 | 29 | /* Encrypt a pair of 32-bit integers using the given context. 30 | */ 31 | void blowfish_encrypt(const struct blowfish *, uint32_t *, uint32_t *); 32 | 33 | /* Decrypt a pair of 32-bit integers using the given context. 34 | */ 35 | void blowfish_decrypt(const struct blowfish *, uint32_t *, uint32_t *); 36 | 37 | /* Compute the bcrypt digest for a given password. 38 | * 39 | * All inputs and outputs are raw bytes, not base-64 encoded. 40 | * 41 | * The digest must have space for 24 bytes (BLOWFISH_DIGEST_LENGTH). 42 | * 43 | * The maximum password length is 72 bytes. Note: As a convention, 44 | * OpenBSD's bcrypt() includes the null terminator byte in the key. 45 | * 46 | * The salt must be 16 bytes (BLOWFISH_SALT_LENGTH). 47 | * 48 | * The maximum cost is 63. 49 | */ 50 | void blowfish_bcrypt( 51 | void *digest, 52 | const void *pwd, 53 | int len, 54 | const void *salt, 55 | int cost 56 | ); 57 | 58 | #endif 59 | -------------------------------------------------------------------------------- /w32-compat/getopt.h: -------------------------------------------------------------------------------- 1 | /* A minimal POSIX getopt() implementation in ANSI C 2 | * 3 | * This is free and unencumbered software released into the public domain. 4 | * 5 | * This implementation supports the convention of resetting the option 6 | * parser by assigning optind to 0. This resets the internal state 7 | * appropriately. 8 | * 9 | * Ref: http://pubs.opengroup.org/onlinepubs/9699919799/functions/getopt.html 10 | */ 11 | #if !defined(GETOPT_H) && defined(_WIN32) 12 | #define GETOPT_H 13 | 14 | #include 15 | #include 16 | #include 17 | 18 | static int optind = 1; 19 | static int opterr = 1; 20 | static int optopt; 21 | static char *optarg; 22 | 23 | static int 24 | getopt(int argc, char * const argv[], const char *optstring) 25 | { 26 | static int optpos = 1; 27 | const char *arg; 28 | (void)argc; 29 | 30 | /* Reset? */ 31 | if (optind == 0) { 32 | optind = 1; 33 | optpos = 1; 34 | } 35 | 36 | arg = argv[optind]; 37 | if (arg && strcmp(arg, "--") == 0) { 38 | optind++; 39 | return -1; 40 | } else if (!arg || arg[0] != '-' || !isalnum(arg[1])) { 41 | return -1; 42 | } else { 43 | const char *opt = strchr(optstring, arg[optpos]); 44 | optopt = arg[optpos]; 45 | if (!opt) { 46 | if (opterr && *optstring != ':') 47 | fprintf(stderr, "%s: illegal option: %c\n", argv[0], optopt); 48 | return '?'; 49 | } else if (opt[1] == ':') { 50 | if (arg[optpos + 1]) { 51 | optarg = (char *)arg + optpos + 1; 52 | optind++; 53 | optpos = 1; 54 | return optopt; 55 | } else if (argv[optind + 1]) { 56 | optarg = (char *)argv[optind + 1]; 57 | optind += 2; 58 | optpos = 1; 59 | return optopt; 60 | } else { 61 | if (opterr && *optstring != ':') 62 | fprintf(stderr, 63 | "%s: option requires an argument: %c\n", 64 | argv[0], optopt); 65 | return *optstring == ':' ? ':' : '?'; 66 | } 67 | } else { 68 | if (!arg[++optpos]) { 69 | optind++; 70 | optpos = 1; 71 | } 72 | return optopt; 73 | } 74 | } 75 | } 76 | 77 | #endif 78 | -------------------------------------------------------------------------------- /blowpipe.1: -------------------------------------------------------------------------------- 1 | .TH BLOWPIPE 1 2 | .SH NAME 3 | blowpipe \- create a Blowfish-encrypted, authenticated pipe 4 | .SH SYNOPSIS 5 | .B blowpipe 6 | [\-\fBD\fR|\-\fBE\fR] 7 | [\-\fBc\fR \fIcost\fR] 8 | [\-\fBk\fR \fIfile\fR] 9 | [\-\fBw\fR] 10 | outputfile 12 | .SH DESCRIPTION 13 | .B blowpipe 14 | is a \fItoy\fR that creates a Blowfish-encrypted, authenticated pipe. 15 | Each cryptographic primitive in use is built from the Blowfish cipher (bcrypt KDF, CTR mode Blowfish, CBC-MAC). 16 | .PP 17 | On decryption, the tool \fIonly\fR produces authenticated output. 18 | However, the overall output could still be truncated should something go wrong in the middle of a long stream. 19 | If the stream has been truncated, an error message will be produced and the exit status will reflect the error. 20 | .PP 21 | Since Blowfish is a 64-bit block cipher, it's only safe to encrypt up to a few tens of GBs at a time before birthday attacks become an issue. 22 | However, because of the initialization vector (IV), it's safe to reuse a password or key file to encrypt an arbitrary amount of data across separate runs. 23 | .SH OPTIONS 24 | Either of \fB-D\fR or \fB-E\fR must be specified. 25 | There is no default mode. 26 | .TP 27 | \fB\-D\fR 28 | Decrypt standard input to standard output. 29 | .TP 30 | \fB\-E\fB 31 | Encrypt standard input to standard output. 32 | .TP 33 | \fB\-c\fR \fIcost\fR 34 | In encryption mode (\fB\-E\fR), set the bcrypt cost. 35 | The cost is a power of two, so each increment doubles the total cost. 36 | In decryption mode, set the maximum permitted bcrypt cost. 37 | The default is low in order to prevent a malicious input from choosing a ridiculously large cost. 38 | .TP 39 | \fB\-k\fR \fIfile\fR 40 | Read key material from a file. 41 | By default little key stretching (\fB\-c\fR) is performed on this key. 42 | .TP 43 | \fB\-w\fR 44 | Wait for full chunks and don't flush chunks early. 45 | This increases latency in the pipe but decreases overhead. 46 | This option is meaningless if the input is a physical file. 47 | .SH EXAMPLES 48 | Encrypt/decrypt a file: 49 | .HP 2 50 | .nf 51 | $ blowpipe -E < data.gz > data.gz.enc 52 | $ blowpipe -D < data.gz.enc | gunzip > data.txt 53 | .fi 54 | .PP 55 | Encrypt/decrypt a TCP stream: 56 | .HP 2 57 | .nf 58 | ## receiver 59 | $ nc -lp 2000 | blowpipe -D -k keyfile > data.zip || rm -f data.zip 60 | 61 | ## sender 62 | $ blowpipe -E -k keyfile < data.zip | nc -N hostname 2000 63 | .fi 64 | .SH "SEE ALSO" 65 | .BR blowfish (3), 66 | .BR aepipe (1), 67 | .BR enchive (1) 68 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Blowpipe: authenticated Blowfish-encrypted pipe 2 | 3 | Blowpipe is a *toy* that creates an authenticated, 4 | [Blowfish][bfsh]-encrypted pipe. Each cryptographic primitive it uses is 5 | built entirely with the Blowfish cipher: 6 | 7 | * The key is derived from a passphrase using [bcrypt][bcrypt]. 8 | * The stream is encrypted with Blowfish in [CTR mode][ctr]. 9 | * The message authentication code ([MAC][mac]) is 10 | [Blowfish-CBC-MAC][cbcmac] with fixed-length messages. 11 | 12 | This tool is strictly stream oriented, processing standard input to 13 | standard output. It could be used to encrypt a file (prompted for a 14 | passphrase): 15 | 16 | $ blowpipe -E < data.gz > data.gz.enc 17 | $ blowpipe -D < data.gz.enc | gunzip > data.txt 18 | 19 | Or to securely transfer a file over a network: 20 | 21 | # receiver 22 | $ nc -lp 2000 | blowpipe -D -k keyfile > data.zip || rm -f data.zip 23 | 24 | # sender 25 | $ blowpipe -E -k keyfile < data.zip | nc -N hostname 2000 26 | 27 | On a modern desktop, Blowpipe has a throughput of about 75 MB/s. 28 | 29 | ![][img] 30 | 31 | On decryption, the tool *only* produces authenticated output. However, 32 | the overall output could still be truncated should something go wrong in 33 | the middle of a long stream. If the stream has been truncated, an error 34 | message will be produced and the exit status will reflect the error. 35 | 36 | Since Blowfish is a 64-bit block cipher, it's only safe to encrypt up to 37 | a few tens of GBs at a time before birthday attacks become an issue. 38 | However, because of the key salt, it's safe to reuse a password or key 39 | file to encrypt an arbitrary amount of data across separate runs. Other 40 | than the block size, Blowfish is still a solid cipher. 41 | 42 | Despite being a toy, Blowpipe is more secure than a few crypto tools 43 | typically packaged by a Linux distribution, such as the ["bcrypt" file 44 | encryption tool][bad] (unauthenticated, [ECB mode][ecb]) and 45 | [aespipe][aespipe] (unauthenticated). 46 | 47 | A proper alternative to Blowpipe is [aepipe][aepipe], which is built 48 | upon a stronger, newer cipher (AES). 49 | 50 | ## Options 51 | 52 | -D decrypt standard input to standard output 53 | -E encrypt standard input to standard output 54 | -c cost (encrypt) set the bcrypt cost 55 | (decrypt) set the maximum permitted bcrypt cost 56 | -k file read key material from given file 57 | -w wait for full chunks and don't flush early 58 | 59 | ## Installation 60 | 61 | Use the PREFIX variable to control the installation path. The default is 62 | to install under `/usr/local`. 63 | 64 | $ make PREFIX=$HOME/.local install 65 | 66 | To build with MinGW-w64, set CC and EXEEXT. On Linux you can even run 67 | the test suite (`make check`) if you have the Wine binfmt configured. 68 | 69 | $ make CC=x86_64-w64-mingw32-gcc EXEEXT=.exe 70 | 71 | To quickly build with MSVC: 72 | 73 | cl.exe -Ox blowpipe.c blowfish.c 74 | 75 | There's also an `amalgamation` target, which will combine all sources 76 | and headers into a single C source file, `blowpipe-cli.c`, ready to be 77 | compiled trivially anywhere by any C99 compiler. 78 | 79 | ## Wire format 80 | 81 | The overall wire format: 82 | 83 | * 16-byte random salt 84 | * 1-byte bcrypt cost: last salt byte + cost, modulo 256 85 | * one or more chunks 86 | 87 | The format is stream-oriented and data is processed in separate chunks 88 | up to 64kB in size, each with its own MAC. A special zero-length chunk 89 | marks the end of the stream, and any data following this chunk is 90 | ignored. 91 | 92 | The chunk format: 93 | 94 | * 8 byte MAC for this chunk (continued from previous chunk) 95 | * 2 byte big endian message length, encrypted and authenticated (`msglen`) 96 | * `msglen - 2` bytes of encrypted data 97 | 98 | The MAC is computed on the ciphertext. The last block in a chunk has its 99 | plaintext zero padded before encryption and authentication, but these 100 | bytes are not actually transmitted. The receiver must also zero-pad and 101 | encrypt the padding before authenticating. 102 | 103 | Since MACs are chained across chunks, it's not possible for an attacker 104 | to reorder individual chunks. The last chunk in the stream will have a 105 | `msglen` of 2, making it an empty chunk. Since this chunk and its 106 | `msglen` are authenticated, an attacker cannot prematurely terminate the 107 | stream without being detected. 108 | 109 | # C99 Public Domain Blowfish Cipher 110 | 111 | This repository includes a standalone Blowfish library (`blowfish.c`, 112 | `blowfish.h`), ready to use in another project. It is a strictly 113 | conforming C99 program with no platform-specific code. 114 | 115 | ~~~c 116 | void blowfish_init(struct blowfish *, const void *, int); 117 | void blowfish_encrypt(struct blowfish *, uint32_t *, uint32_t *); 118 | void blowfish_decrypt(struct blowfish *, uint32_t *, uint32_t *); 119 | void blowfish_bcrypt(void *digest, const void *pwd, int len, const void *salt, int cost); 120 | ~~~ 121 | 122 | See `blowfish.h` for complete API documentation. 123 | 124 | 125 | [aepipe]: https://github.com/hashbrowncipher/keypipe 126 | [aespipe]: http://loop-aes.sourceforge.net/aespipe.README 127 | [bad]: http://bcrypt.sourceforge.net/ 128 | [bcrypt]: https://en.wikipedia.org/wiki/Bcrypt 129 | [bfsh]: https://www.schneier.com/academic/blowfish/ 130 | [cbcmac]: https://en.wikipedia.org/wiki/CBC-MAC 131 | [ctr]: https://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#CTR 132 | [ecb]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=700758 133 | [img]: https://upload.wikimedia.org/wikipedia/commons/e/ec/Blowpipe2_(PSF).jpg 134 | [mac]: https://en.wikipedia.org/wiki/Message_authentication_code 135 | -------------------------------------------------------------------------------- /tests/vectors2.h: -------------------------------------------------------------------------------- 1 | /* 2 | * Author : Randy L. Milbert 3 | * E-mail : rmilbert@mit.edu 4 | * Date : 18 Jun 97 5 | * Description: Eric Young's test vectors for Blowfish. 6 | */ 7 | 8 | #include 9 | 10 | #define NUM_VARIABLE_KEY_TESTS 34 11 | #define NUM_SET_KEY_TESTS 24 12 | 13 | /* plaintext bytes -- left halves */ 14 | uint32_t plaintext_l[NUM_VARIABLE_KEY_TESTS + NUM_SET_KEY_TESTS] = { 15 | 0x00000000l, 0xFFFFFFFFl, 0x10000000l, 0x11111111l, 0x11111111l, 16 | 0x01234567l, 0x00000000l, 0x01234567l, 0x01A1D6D0l, 0x5CD54CA8l, 17 | 0x0248D438l, 0x51454B58l, 0x42FD4430l, 0x059B5E08l, 0x0756D8E0l, 18 | 0x762514B8l, 0x3BDD1190l, 0x26955F68l, 0x164D5E40l, 0x6B056E18l, 19 | 0x004BD6EFl, 0x480D3900l, 0x437540C8l, 0x072D43A0l, 0x02FE5577l, 20 | 0x1D9D5C50l, 0x30553228l, 0x01234567l, 0x01234567l, 0x01234567l, 21 | 0xFFFFFFFFl, 0x00000000l, 0x00000000l, 0xFFFFFFFFl, 0xFEDCBA98l, 22 | 0xFEDCBA98l, 0xFEDCBA98l, 0xFEDCBA98l, 0xFEDCBA98l, 0xFEDCBA98l, 23 | 0xFEDCBA98l, 0xFEDCBA98l, 0xFEDCBA98l, 0xFEDCBA98l, 0xFEDCBA98l, 24 | 0xFEDCBA98l, 0xFEDCBA98l, 0xFEDCBA98l, 0xFEDCBA98l, 0xFEDCBA98l, 25 | 0xFEDCBA98l, 0xFEDCBA98l, 0xFEDCBA98l, 0xFEDCBA98l, 0xFEDCBA98l, 26 | 0xFEDCBA98l, 0xFEDCBA98l, 0xFEDCBA98l 27 | }; 28 | 29 | /* plaintext bytes -- right halves */ 30 | uint32_t plaintext_r[NUM_VARIABLE_KEY_TESTS + NUM_SET_KEY_TESTS] = { 31 | 0x00000000l, 0xFFFFFFFFl, 0x00000001l, 0x11111111l, 0x11111111l, 32 | 0x89ABCDEFl, 0x00000000l, 0x89ABCDEFl, 0x39776742l, 0x3DEF57DAl, 33 | 0x06F67172l, 0x2DDF440Al, 0x59577FA2l, 0x51CF143Al, 0x774761D2l, 34 | 0x29BF486Al, 0x49372802l, 0x35AF609Al, 0x4F275232l, 0x759F5CCAl, 35 | 0x09176062l, 0x6EE762F2l, 0x698F3CFAl, 0x77075292l, 0x8117F12Al, 36 | 0x18F728C2l, 0x6D6F295Al, 0x89ABCDEFl, 0x89ABCDEFl, 0x89ABCDEFl, 37 | 0xFFFFFFFFl, 0x00000000l, 0x00000000l, 0xFFFFFFFFl, 0x76543210l, 38 | 0x76543210l, 0x76543210l, 0x76543210l, 0x76543210l, 0x76543210l, 39 | 0x76543210l, 0x76543210l, 0x76543210l, 0x76543210l, 0x76543210l, 40 | 0x76543210l, 0x76543210l, 0x76543210l, 0x76543210l, 0x76543210l, 41 | 0x76543210l, 0x76543210l, 0x76543210l, 0x76543210l, 0x76543210l, 42 | 0x76543210l, 0x76543210l, 0x76543210l 43 | }; 44 | 45 | /* key bytes for variable key tests */ 46 | uint8_t variable_key[NUM_VARIABLE_KEY_TESTS][8] = { 47 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, 48 | { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }, 49 | { 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, 50 | { 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11 }, 51 | { 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF }, 52 | { 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11 }, 53 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, 54 | { 0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10 }, 55 | { 0x7C, 0xA1, 0x10, 0x45, 0x4A, 0x1A, 0x6E, 0x57 }, 56 | { 0x01, 0x31, 0xD9, 0x61, 0x9D, 0xC1, 0x37, 0x6E }, 57 | { 0x07, 0xA1, 0x13, 0x3E, 0x4A, 0x0B, 0x26, 0x86 }, 58 | { 0x38, 0x49, 0x67, 0x4C, 0x26, 0x02, 0x31, 0x9E }, 59 | { 0x04, 0xB9, 0x15, 0xBA, 0x43, 0xFE, 0xB5, 0xB6 }, 60 | { 0x01, 0x13, 0xB9, 0x70, 0xFD, 0x34, 0xF2, 0xCE }, 61 | { 0x01, 0x70, 0xF1, 0x75, 0x46, 0x8F, 0xB5, 0xE6 }, 62 | { 0x43, 0x29, 0x7F, 0xAD, 0x38, 0xE3, 0x73, 0xFE }, 63 | { 0x07, 0xA7, 0x13, 0x70, 0x45, 0xDA, 0x2A, 0x16 }, 64 | { 0x04, 0x68, 0x91, 0x04, 0xC2, 0xFD, 0x3B, 0x2F }, 65 | { 0x37, 0xD0, 0x6B, 0xB5, 0x16, 0xCB, 0x75, 0x46 }, 66 | { 0x1F, 0x08, 0x26, 0x0D, 0x1A, 0xC2, 0x46, 0x5E }, 67 | { 0x58, 0x40, 0x23, 0x64, 0x1A, 0xBA, 0x61, 0x76 }, 68 | { 0x02, 0x58, 0x16, 0x16, 0x46, 0x29, 0xB0, 0x07 }, 69 | { 0x49, 0x79, 0x3E, 0xBC, 0x79, 0xB3, 0x25, 0x8F }, 70 | { 0x4F, 0xB0, 0x5E, 0x15, 0x15, 0xAB, 0x73, 0xA7 }, 71 | { 0x49, 0xE9, 0x5D, 0x6D, 0x4C, 0xA2, 0x29, 0xBF }, 72 | { 0x01, 0x83, 0x10, 0xDC, 0x40, 0x9B, 0x26, 0xD6 }, 73 | { 0x1C, 0x58, 0x7F, 0x1C, 0x13, 0x92, 0x4F, 0xEF }, 74 | { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 }, 75 | { 0x1F, 0x1F, 0x1F, 0x1F, 0x0E, 0x0E, 0x0E, 0x0E }, 76 | { 0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1, 0xFE }, 77 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, 78 | { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }, 79 | { 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF }, 80 | { 0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10 } 81 | }; 82 | 83 | /* key bytes for set key tests */ 84 | uint8_t set_key[24] = { 85 | 0xF0, 0xE1, 0xD2, 0xC3, 0xB4, 0xA5, 0x96, 0x87, 86 | 0x78, 0x69, 0x5A, 0x4B, 0x3C, 0x2D, 0x1E, 0x0F, 87 | 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77 88 | }; 89 | 90 | /* ciphertext bytes -- left halves */ 91 | uint32_t ciphertext_l[NUM_VARIABLE_KEY_TESTS + NUM_SET_KEY_TESTS] = { 92 | 0x4EF99745l, 0x51866FD5l, 0x7D856F9Al, 0x2466DD87l, 0x61F9C380l, 93 | 0x7D0CC630l, 0x4EF99745l, 0x0ACEAB0Fl, 0x59C68245l, 0xB1B8CC0Bl, 94 | 0x1730E577l, 0xA25E7856l, 0x353882B1l, 0x48F4D088l, 0x432193B7l, 95 | 0x13F04154l, 0x2EEDDA93l, 0xD887E039l, 0x5F99D04Fl, 0x4A057A3Bl, 96 | 0x452031C1l, 0x7555AE39l, 0x53C55F9Cl, 0x7A8E7BFAl, 0xCF9C5D7Al, 97 | 0xD1ABB290l, 0x55CB3774l, 0xFA34EC48l, 0xA7907951l, 0xC39E072Dl, 98 | 0x014933E0l, 0xF21E9A77l, 0x24594688l, 0x6B5C5A9Cl, 0xF9AD597Cl, 99 | 0xE91D21C1l, 0xE9C2B70Al, 0xBE1E6394l, 0xB39E4448l, 0x9457AA83l, 100 | 0x8BB77032l, 0xE87A244El, 0x15750E7Al, 0x122BA70Bl, 0x3A833C9Al, 101 | 0x9409DA87l, 0x884F8062l, 0x1F85031Cl, 0x79D9373Al, 0x93142887l, 102 | 0x03429E83l, 0xA4299E27l, 0xAFD5AED1l, 0x10851C0El, 0xE6F51ED7l, 103 | 0x64A6E14Al, 0x80C7D7D4l, 0x05044B62l 104 | }; 105 | 106 | /* ciphertext bytes -- right halves */ 107 | uint32_t ciphertext_r[NUM_VARIABLE_KEY_TESTS + NUM_SET_KEY_TESTS] = { 108 | 0x6198DD78l, 0xB85ECB8Al, 0x613063F2l, 0x8B963C9Dl, 0x2281B096l, 109 | 0xAFDA1EC7l, 0x6198DD78l, 0xC6A0A28Dl, 0xEB05282Bl, 0x250F09A0l, 110 | 0x8BEA1DA4l, 0xCF2651EBl, 0x09CE8F1Al, 0x4C379918l, 0x8951FC98l, 111 | 0xD69D1AE5l, 0xFFD39C79l, 0x3C2DA6E3l, 0x5B163969l, 0x24D3977Bl, 112 | 0xE4FADA8El, 0xF59B87BDl, 0xB49FC019l, 0x937E89A3l, 0x4986ADB5l, 113 | 0x658BC778l, 0xD13EF201l, 0x47B268B2l, 0x08EA3CAEl, 0x9FAC631Dl, 114 | 0xCDAFF6E4l, 0xB71C49BCl, 0x5754369Al, 0x5D9E0A5Al, 0x49DB005El, 115 | 0xD961A6D6l, 0x1BC65CF3l, 0x08640F05l, 0x1BDB1E6El, 0xB1928C0Dl, 116 | 0xF960629Dl, 0x2CC85E82l, 0x4F4EC577l, 0x3AB64AE0l, 0xFFC537F6l, 117 | 0xA90F6BF2l, 0x5060B8B4l, 0x19E11968l, 0x714CA34Fl, 0xEE3BE15Cl, 118 | 0x8CE2D14Bl, 0x469FF67Bl, 0xC1BC96A8l, 0x3858DA9Fl, 0x9B9DB21Fl, 119 | 0xFD36B46Fl, 0x5A5479ADl, 0xFA52D080l 120 | }; 121 | -------------------------------------------------------------------------------- /w32-compat/unistd.h: -------------------------------------------------------------------------------- 1 | /* POSIX compatability layer for Blowpipe 2 | * 3 | * Only the tiny, tiny subset of POSIX needed by Blowpipe is implemented. 4 | */ 5 | #if !defined(W32_COMPAT_H) && defined(_WIN32) 6 | #define W32_COMPAT_H 7 | 8 | #include 9 | #include 10 | #include 11 | #include 12 | #include 13 | 14 | #include 15 | 16 | #ifdef _MSC_VER 17 | # pragma comment(lib, "advapi32.lib") 18 | #endif 19 | 20 | typedef SSIZE_T ssize_t; 21 | 22 | #define ECHO 1 23 | #define TCSANOW 0 24 | struct termios { 25 | int c_lflag; 26 | }; 27 | 28 | #define O_RDONLY 1 29 | #define O_RDWR 2 30 | 31 | #define STDIN_FILENO 0 32 | #define STDOUT_FILENO 1 33 | #define URANDOM_FILENO 3 34 | #define TTY_FILENO 4 35 | #define FILE_FILENO 5 36 | 37 | static HANDLE compat_file; 38 | static HANDLE compat_conin; 39 | static HANDLE compat_conout; 40 | static HCRYPTPROV compat_crypt; 41 | 42 | static int 43 | open(const char *path, int flags) 44 | { 45 | if (strcmp(path, "/dev/urandom") == 0) { 46 | DWORD type = PROV_RSA_FULL; 47 | DWORD flags = CRYPT_VERIFYCONTEXT | CRYPT_SILENT; 48 | if (!CryptAcquireContext(&compat_crypt, 0, 0, type, flags)) { 49 | errno = EACCES; 50 | return -1; 51 | } 52 | return URANDOM_FILENO; 53 | } else if (strcmp(path, "/dev/tty") == 0) { 54 | DWORD access = GENERIC_READ | GENERIC_WRITE; 55 | DWORD disp = OPEN_EXISTING; 56 | DWORD flags = FILE_ATTRIBUTE_NORMAL; 57 | compat_conin = CreateFile("CONIN$", access, 0, 0, disp, flags, 0); 58 | if (compat_conin == INVALID_HANDLE_VALUE) { 59 | errno = ENOENT; 60 | return -1; 61 | } 62 | compat_conout = CreateFile("CONOUT$", access, 0, 0, disp, flags, 0); 63 | if (compat_conout == INVALID_HANDLE_VALUE) { 64 | CloseHandle(compat_conin); 65 | errno = ENOENT; 66 | return -1; 67 | } 68 | return TTY_FILENO; 69 | } else { 70 | assert(flags == O_RDONLY); 71 | DWORD access = GENERIC_READ; 72 | DWORD share = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE; 73 | DWORD disp = OPEN_EXISTING; 74 | DWORD flags = FILE_ATTRIBUTE_NORMAL; 75 | compat_file = CreateFile(path, access, share, 0, disp, flags, 0); 76 | return compat_file == INVALID_HANDLE_VALUE ? -1 : FILE_FILENO; 77 | } 78 | } 79 | 80 | static int 81 | close(int fd) 82 | { 83 | switch (fd) { 84 | case URANDOM_FILENO: 85 | CryptReleaseContext(compat_crypt, 0); 86 | return 0; 87 | case TTY_FILENO: 88 | CloseHandle(compat_conin); 89 | CloseHandle(compat_conout); 90 | return 0; 91 | case FILE_FILENO: 92 | CloseHandle(compat_file); 93 | return 0; 94 | default: 95 | abort(); 96 | } 97 | } 98 | 99 | static ssize_t 100 | read(int fd, void *buf, size_t len) 101 | { 102 | switch (fd) { 103 | case STDIN_FILENO: { 104 | static HANDLE in = INVALID_HANDLE_VALUE; 105 | static BOOL isconsole; 106 | if (in == INVALID_HANDLE_VALUE) { 107 | in = GetStdHandle(STD_INPUT_HANDLE); 108 | DWORD mode; 109 | isconsole = GetConsoleMode(in, &mode); 110 | } 111 | if (len > 0x77e8 && isconsole) { 112 | /* Undocumented behavior: Console reads are limited to 30696 113 | * bytes. Larger reads trigger ERROR_NOT_ENOUGH_MEMORY. 114 | * Y U do dis, Microsoft? 115 | */ 116 | len = 0x77e8; 117 | } 118 | DWORD actual; 119 | BOOL r = ReadFile(in, buf, len, &actual, 0); 120 | if (!r) { 121 | DWORD error = GetLastError(); 122 | if (error == ERROR_BROKEN_PIPE) 123 | return 0; // actually an EOF 124 | errno = EIO; 125 | return -1; 126 | } 127 | return actual; 128 | } 129 | case URANDOM_FILENO: { 130 | if (!CryptGenRandom(compat_crypt, len, buf)) { 131 | errno = EIO; 132 | return -1; 133 | } 134 | return len; 135 | } 136 | case TTY_FILENO: { 137 | DWORD actual; 138 | BOOL r = ReadConsole(compat_conin, buf, len, &actual, 0); 139 | if (!r) { 140 | errno = EIO; 141 | return -1; 142 | } 143 | return actual; 144 | } 145 | case FILE_FILENO: { 146 | DWORD actual; 147 | BOOL r = ReadFile(compat_file, buf, len, &actual, 0); 148 | if (!r) { 149 | errno = EIO; 150 | return -1; 151 | } 152 | return actual; 153 | } 154 | default: 155 | abort(); 156 | } 157 | } 158 | 159 | static ssize_t 160 | write(int fd, const void *buf, size_t len) 161 | { 162 | switch (fd) { 163 | case STDOUT_FILENO: { 164 | HANDLE out = GetStdHandle(STD_OUTPUT_HANDLE); 165 | DWORD actual; 166 | BOOL r = WriteFile(out, buf, len, &actual, 0); 167 | if (!r) { 168 | errno = EIO; 169 | return -1; 170 | } 171 | return actual; 172 | } 173 | case TTY_FILENO: { 174 | DWORD actual; 175 | BOOL r = WriteConsole(compat_conout, buf, len, &actual, 0); 176 | if (!r) { 177 | errno = EIO; 178 | return -1; 179 | } 180 | return actual; 181 | } 182 | default: 183 | abort(); 184 | } 185 | } 186 | 187 | 188 | static int 189 | tcgetattr(int fd, struct termios *s) 190 | { 191 | assert(fd == TTY_FILENO); 192 | s->c_lflag = 1; 193 | return 0; 194 | } 195 | 196 | static int 197 | tcsetattr(int fd, int actions, struct termios *s) 198 | { 199 | assert(fd == TTY_FILENO); 200 | assert(actions == TCSANOW); 201 | DWORD access = GENERIC_READ | GENERIC_WRITE; 202 | DWORD disp = OPEN_EXISTING; 203 | DWORD flags = FILE_ATTRIBUTE_NORMAL; 204 | HANDLE console = CreateFile("CONIN$", access, 0, 0, disp, flags, 0); 205 | if (console != INVALID_HANDLE_VALUE) { 206 | DWORD orig; 207 | if (GetConsoleMode(console, &orig)) { 208 | if (s->c_lflag) 209 | SetConsoleMode(console, orig | ENABLE_ECHO_INPUT); 210 | else 211 | SetConsoleMode(console, orig & ~ENABLE_ECHO_INPUT); 212 | } 213 | } 214 | return 0; 215 | } 216 | 217 | #endif 218 | -------------------------------------------------------------------------------- /tests/tests.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | #include 5 | #include "vectors2.h" 6 | #include "../blowfish.h" 7 | 8 | #define NUM_BCRYPT_VECTORS (sizeof(bcrypt_vectors)/sizeof(*bcrypt_vectors)/2) 9 | static const char bcrypt_vectors[][64] = { 10 | "twist", "$2a$04$mlr.PoDP3w4SzMh8A/td4O2LE5lJcM2/JSPEwYH0wXmT/Ai.Ip3GG", 11 | "sector", "$2a$04$4u14y0XgEKWfE2yS.VF6JuZhzI2JAcIsSM0ukKuSeFZDPH2Qfp2Ku", 12 | "cue", "$2a$05$B8Ld4qjLv/sMgtkdO6o8iO7Sm61jDwADJ9Y8fTXZyQqoG1qftwF82", 13 | "fading", "$2a$05$5d6JDfbFA3AZSBJpZmCcVuJQjo7QSgzePx3nS3PqTTsG.aqoDUkPW", 14 | "wedge", "$2a$06$LtzByA9pukm5I9XbW.6t6eZy3Qkg1pB17IuzfTfSCsky2X5eoFMua", 15 | "owns", "$2a$06$8wgs0GP1l0uT294gIj5STeFhpFAXsdChz8bdypccbpAQbevxWne9K", 16 | "cause", "$2a$07$IEtr9PejuMM8wSZpvQ4WL.rEdfz.2Y0R6ELEi2RaVKWXM5HbhUujq", 17 | "visual", "$2a$07$xXB.ianZO3Fzo4oG28uh1e.MoLZVezlYTOcm7kOKiIfp4L0MQFEBO", 18 | "thumbs", "$2a$08$vWI4Y9ApphxiDVlB.9wRYeoOlqEQa2q3wuQ8gQbhWFm5THOVYUc4K", 19 | "stare", "$2a$08$OEB986UEwkJLIw7SdoXKju/lgW7j/bVjsVaaaVEo461KdyUMxT/AO", 20 | "corpse", "$2a$09$MEKwC6Me6/hwiRMLoICLLOkIYIm8InZA39VlMRC0o9yHR1dW7P5q.", 21 | "taste", "$2a$09$f0rzicUe7fceAk7BcbEgZegPcX5fyAV0YmSJsGT0cgAoTJaJL9LBa", 22 | "loves", "$2a$10$WRpreT7IpmlwVcAUJWHPhea6nb2cEKMdxDdDbuNNJORVLuRNA4ofi", 23 | "slices", "$2a$10$JL73nWnZVBXZsV9/DZDQruS27YKRk.NnlqM0WJ8evHOcNfRZR67i6", 24 | "roots", "$2a$11$XRKrSKrCuUKnb5sllKpJ9.VscoH9O7ppsPeABflG20iPRGoKozv7a", 25 | "own", "$2a$11$P.Sp8zWnDMjRkSH5uc5./eVg4aZyTPajJGdGg.rs3/UX.1/dfFwsm" 26 | }; 27 | 28 | static const char base64[] = { 29 | '.', '/', 'A', 'B', 'C', 'D', 'E', 'F', 30 | 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 31 | 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 32 | 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 33 | 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 34 | 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 35 | 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', 36 | '2', '3', '4', '5', '6', '7', '8', '9', 37 | }; 38 | 39 | static const unsigned char index64[] = { 40 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 41 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 42 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 43 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 44 | 0xff, 0xff, 0xff, 0xff, 0xff, 0x40, 0xff, 0xff, 45 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x01, 46 | 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 47 | 0x3e, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 48 | 0xff, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 49 | 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 50 | 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 51 | 0x19, 0x1a, 0x1b, 0xff, 0xff, 0xff, 0xff, 0xff, 52 | 0xff, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 53 | 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 54 | 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 55 | 0x33, 0x34, 0x35, 0xff, 0xff, 0xff, 0xff, 0xff, 56 | }; 57 | 58 | static void 59 | b64encode(char *dst, const void *src, size_t len) 60 | { 61 | int ocount = 0; 62 | unsigned overflow = 0; 63 | for (size_t i = 0; i < len; i++) { 64 | unsigned c = ((unsigned char *)src)[i]; 65 | overflow = c | (overflow << 8); 66 | ocount += 8; 67 | while (ocount >= 6) { 68 | *dst++ = base64[(overflow >> (ocount - 6)) & 0x3f]; 69 | ocount -= 6; 70 | } 71 | } 72 | if (ocount > 0) 73 | *dst++ = base64[(overflow << (6 - ocount)) & 0x3f]; 74 | *dst = 0; 75 | } 76 | 77 | static void 78 | b64decode(void *dst, const char *src) 79 | { 80 | int c; 81 | int ocount = 0; 82 | unsigned overflow = 0; 83 | unsigned char *p = dst; 84 | while ((c = *src++)) { 85 | c = index64[c]; 86 | overflow = (overflow << 6) | c; 87 | ocount += 6; 88 | while (ocount >= 8) { 89 | *p++ = (overflow >> (ocount - 8)) & 0xff; 90 | ocount -= 8; 91 | } 92 | } 93 | } 94 | 95 | struct bcrypt { 96 | uint8_t salt[BLOWFISH_SALT_LENGTH]; 97 | uint8_t digest[BLOWFISH_DIGEST_LENGTH]; 98 | int cost; 99 | }; 100 | 101 | static void 102 | bcrypt_decode(struct bcrypt *bc, const char *str) 103 | { 104 | char salt[32]; 105 | memcpy(salt, str + 7, 31); 106 | salt[31] = 0; 107 | b64decode(bc->salt, salt); 108 | b64decode(bc->digest, str + 28); 109 | bc->cost = (str[4] - '0') * 10 + str[5] - '0'; 110 | } 111 | 112 | static void 113 | bcrypt_encode(struct bcrypt *bc, char *str) 114 | { 115 | str[0] = '$'; 116 | str[1] = '2'; 117 | str[2] = 'a'; 118 | str[3] = '$'; 119 | str[4] = '0' + (bc->cost / 10); 120 | str[5] = '0' + (bc->cost % 10); 121 | str[6] = '$'; 122 | b64encode(str + 7, bc->salt, BLOWFISH_SALT_LENGTH); 123 | b64encode(str + 29, bc->digest, BLOWFISH_DIGEST_LENGTH - 1); 124 | } 125 | 126 | static int 127 | verify(uint32_t el, uint32_t er, uint32_t al, uint32_t ar) 128 | { 129 | if (er != ar || el != al) { 130 | printf("expect: %08lx%08lx\n", (unsigned long)el, (unsigned long)er); 131 | printf("actual: %08lx%08lx\n", (unsigned long)al, (unsigned long)ar); 132 | return 1; 133 | } 134 | return 0; 135 | } 136 | 137 | int 138 | main(void) 139 | { 140 | int failures = 0; 141 | 142 | /* bcrypt tests */ 143 | for (size_t i = 0; i < NUM_BCRYPT_VECTORS; i++) { 144 | struct bcrypt bc[1]; 145 | const char *pwd = bcrypt_vectors[i * 2 + 0]; 146 | int pwdlen = strlen(pwd) + 1; 147 | const char *expect = bcrypt_vectors[i * 2 + 1]; 148 | 149 | bcrypt_decode(bc, expect); 150 | memset(bc->digest, 0x5a, sizeof(bc->digest)); 151 | blowfish_bcrypt(bc->digest, pwd, pwdlen, bc->salt, bc->cost); 152 | 153 | char actual[64]; 154 | bcrypt_encode(bc, actual); 155 | if (strcmp(expect, actual) != 0) { 156 | printf("expect: %s\n", expect); 157 | printf("actual: %s\n", actual); 158 | failures++; 159 | } 160 | } 161 | 162 | /* variable key tests */ 163 | for (int i = 0; i < NUM_VARIABLE_KEY_TESTS; i++) { 164 | struct blowfish ctx[1]; 165 | blowfish_init(ctx, variable_key[i], 8); 166 | 167 | uint32_t xl = plaintext_l[i]; 168 | uint32_t xr = plaintext_r[i]; 169 | blowfish_encrypt(ctx, &xl, &xr); 170 | failures += verify(ciphertext_l[i], ciphertext_r[i], xl, xr); 171 | 172 | blowfish_decrypt(ctx, &xl, &xr); 173 | failures += verify(plaintext_l[i], plaintext_r[i], xl, xr); 174 | } 175 | 176 | /* set key tests */ 177 | for (int z = 1; z <= NUM_SET_KEY_TESTS; z++) { 178 | struct blowfish ctx[1]; 179 | blowfish_init(ctx, set_key, z); 180 | 181 | int i = NUM_VARIABLE_KEY_TESTS + (int)z - 1; 182 | uint32_t xl = plaintext_l[i]; 183 | uint32_t xr = plaintext_r[i]; 184 | blowfish_encrypt(ctx, &xl, &xr); 185 | failures += verify(ciphertext_l[i], ciphertext_r[i], xl, xr); 186 | 187 | blowfish_decrypt(ctx, &xl, &xr); 188 | failures += verify(plaintext_l[i], plaintext_r[i], xl, xr); 189 | } 190 | 191 | printf("%d failures\n", failures); 192 | return failures == 0 ? EXIT_SUCCESS : EXIT_FAILURE; 193 | } 194 | -------------------------------------------------------------------------------- /blowpipe.c: -------------------------------------------------------------------------------- 1 | /* Blowpipe --- authenticated Blowfish-encrypted pipe */ 2 | #define _POSIX_C_SOURCE 200112L 3 | #include 4 | #include 5 | #include 6 | #include 7 | 8 | #ifdef _WIN32 9 | #include "w32-compat/unistd.h" 10 | #include "w32-compat/getopt.h" 11 | #else 12 | #include 13 | #include 14 | #include 15 | #include 16 | #endif 17 | 18 | #include "blowfish.h" 19 | 20 | #define SALT_LENGTH 16 21 | #define CHUNK_SIZE (1UL << 16) 22 | #define CHUNK_SIZE_SIZE 2 23 | #define PASSPHRASE_COST 15 24 | #define KEYFILE_COST 0 25 | #define MAXIMUM_INPUT_COST 16 26 | 27 | #define DIE(...) \ 28 | do { \ 29 | fprintf(stderr, "blowcrypt: fatal: " __VA_ARGS__); \ 30 | fputc('\n', stderr); \ 31 | exit(EXIT_FAILURE); \ 32 | } while (0) 33 | 34 | #define DIE_ERRNO(s) \ 35 | do { \ 36 | fprintf(stderr, "blowcrypt: fatal: %s: %s\n", s, strerror(errno)); \ 37 | exit(EXIT_FAILURE); \ 38 | } while (0) 39 | 40 | static ssize_t 41 | full_read(int fd, void *buf, size_t len) 42 | { 43 | size_t z = 0; 44 | while (z < len) { 45 | ssize_t r = read(fd, (char *)buf + z, len - z); 46 | if (r == -1) 47 | return -1; 48 | if (r == 0) 49 | break; 50 | z += r; 51 | } 52 | return z; 53 | } 54 | 55 | static void 56 | generate_salt(void *salt) 57 | { 58 | int fd = open("/dev/urandom", O_RDONLY); 59 | if (fd == -1) 60 | DIE_ERRNO("/dev/urandom"); 61 | ssize_t z = full_read(fd, salt, SALT_LENGTH); 62 | if (z == -1) 63 | DIE_ERRNO("/dev/urandom"); 64 | if (z != SALT_LENGTH) 65 | DIE("/dev/urandom salt generation failed"); 66 | close(fd); 67 | } 68 | 69 | static void 70 | read_salt(int fd, void *salt) 71 | { 72 | ssize_t z = full_read(fd, salt, SALT_LENGTH + 1); 73 | if (z == -1) 74 | DIE_ERRNO("reading ciphertext"); 75 | if (z < SALT_LENGTH) 76 | DIE("premature end of ciphertext"); 77 | } 78 | 79 | static void 80 | passphrase_prompt(const char *prompt, char *buf) 81 | { 82 | int tty = open("/dev/tty", O_RDWR); 83 | if (tty == -1) 84 | DIE_ERRNO("/dev/tty"); 85 | 86 | if (write(tty, prompt, strlen(prompt)) != (ssize_t)strlen(prompt)) 87 | DIE_ERRNO("/dev/tty"); 88 | 89 | struct termios old, new; 90 | if (tcgetattr(tty, &old) == -1) 91 | DIE_ERRNO("tcgetattr()"); 92 | new = old; 93 | new.c_lflag &= ~ECHO; 94 | if (tcsetattr(tty, TCSANOW, &new) == -1) 95 | DIE_ERRNO("tcsetattr()"); 96 | 97 | ssize_t z = read(tty, buf, BLOWFISH_MAX_KEY_LENGTH + 1); 98 | (void)tcsetattr(tty, TCSANOW, &old); // don't care if this fails 99 | (void)write(tty, "\n", 1); // don't care if this fails 100 | 101 | if (z == -1) 102 | DIE_ERRNO("/dev/tty"); 103 | else if (z > BLOWFISH_MAX_KEY_LENGTH && (buf[z] != '\n' && buf[z] != '\r')) 104 | DIE("passphrase too long (maximum 56 bytes)"); 105 | else if (z == 0) { 106 | buf[z] = 0; 107 | } else { 108 | buf[z] = 0; 109 | char *end; 110 | if ((end = strchr(buf, '\r'))) 111 | *end = 0; 112 | else if ((end = strchr(buf, '\n'))) 113 | *end = 0; 114 | } 115 | } 116 | 117 | static void 118 | passphrase_kdf(void *key, const void *salt, int cost, int verify) 119 | { 120 | char buf[2][BLOWFISH_MAX_KEY_LENGTH + 1]; 121 | passphrase_prompt("Passphrase: ", buf[0]); 122 | if (verify) { 123 | passphrase_prompt("Passphrase (repeat): ", buf[1]); 124 | if (strcmp(buf[0], buf[1]) != 0) 125 | DIE("passphrases do not match"); 126 | } 127 | blowfish_bcrypt(key, buf, strlen(buf[0]) + 1, salt, cost); 128 | } 129 | 130 | static void 131 | key_read(int fd, void *key, const void *salt, int cost) 132 | { 133 | /* Read one over the maximum key length. The extra character will 134 | * detect an overly-long key. 135 | */ 136 | char buf[BLOWFISH_MAX_KEY_LENGTH + 1]; 137 | ssize_t z = full_read(fd, buf, BLOWFISH_MAX_KEY_LENGTH + 1); 138 | if (z == -1) 139 | DIE_ERRNO("reading key"); 140 | if (z > BLOWFISH_MAX_KEY_LENGTH) 141 | DIE("key is too long (maximum 72 bytes)"); 142 | blowfish_bcrypt(key, buf, z, salt, cost); 143 | } 144 | 145 | static void 146 | encode_u32be(void *buf, uint32_t c) 147 | { 148 | uint8_t *p = buf; 149 | p[0] = (uint8_t)(c >> 24); 150 | p[1] = (uint8_t)(c >> 16); 151 | p[2] = (uint8_t)(c >> 8); 152 | p[3] = (uint8_t)(c >> 0); 153 | } 154 | 155 | static uint32_t 156 | decode_u32be(const void *buf) 157 | { 158 | const uint8_t *p = buf; 159 | return ((uint32_t)p[0] << 24) | 160 | ((uint32_t)p[1] << 16) | 161 | ((uint32_t)p[2] << 8) | 162 | ((uint32_t)p[3] << 0); 163 | } 164 | 165 | #define FLAG_WAIT (1u << 0) 166 | 167 | static void 168 | bp_encrypt(struct blowfish *crypt, struct blowfish *mac, unsigned flags) 169 | { 170 | int eof = 0; 171 | uint64_t ctr = 0; 172 | uint32_t macl = 0; 173 | uint32_t macr = 0; 174 | static uint8_t chunk[CHUNK_SIZE]; 175 | 176 | for (;;) { 177 | ssize_t z; 178 | int headerlen = BLOWFISH_BLOCK_LENGTH + CHUNK_SIZE_SIZE; 179 | if (flags & FLAG_WAIT) { 180 | /* Read as much input as possible, but don't ever read() 181 | * again after getting 0 bytes on a read(). 182 | */ 183 | size_t avail = CHUNK_SIZE - headerlen; 184 | z = 0; 185 | while (!eof && avail) { 186 | ssize_t r = read(STDIN_FILENO, chunk + headerlen + z, avail); 187 | if (r == -1) 188 | break; 189 | if (r == 0) 190 | eof = 1; 191 | z += r; 192 | avail -= r; 193 | } 194 | } else { 195 | /* Read just the available data */ 196 | size_t avail = CHUNK_SIZE - headerlen; 197 | z = read(STDIN_FILENO, chunk + headerlen, avail); 198 | } 199 | if (z == -1) 200 | DIE_ERRNO("reading plaintext"); 201 | 202 | /* Zero-pad last block */ 203 | size_t blocklen = BLOWFISH_BLOCK_LENGTH; 204 | size_t msglen = z + CHUNK_SIZE_SIZE; 205 | size_t nblocks = (msglen + blocklen - 1) / blocklen; 206 | size_t padding = nblocks * blocklen - msglen; 207 | memset(chunk + BLOWFISH_BLOCK_LENGTH + msglen, 0, padding); 208 | 209 | /* Write chunk length to chunk header */ 210 | for (int i = 0; i < CHUNK_SIZE_SIZE; i++) { 211 | int shift = (CHUNK_SIZE_SIZE - 1 - i) * 8; 212 | chunk[BLOWFISH_BLOCK_LENGTH + i] = msglen >> shift; 213 | } 214 | 215 | /* Encrypt the buffer */ 216 | for (size_t i = 0; i < nblocks; i++) { 217 | /* Compute CTR mode pad */ 218 | uint32_t xl = ctr >> 32; 219 | uint32_t xr = ctr++; 220 | blowfish_encrypt(crypt, &xl, &xr); 221 | 222 | /* XOR plaintext with the pad */ 223 | size_t off = (i + 1) * BLOWFISH_BLOCK_LENGTH; 224 | xl ^= decode_u32be(chunk + off + 0); 225 | xr ^= decode_u32be(chunk + off + 4); 226 | 227 | /* Compute the MAC */ 228 | macl ^= xl; 229 | macr ^= xr; 230 | blowfish_encrypt(mac, &macl, ¯); 231 | 232 | /* Put ciphertext back into the buffer */ 233 | encode_u32be(chunk + off + 0, xl); 234 | encode_u32be(chunk + off + 4, xr); 235 | } 236 | encode_u32be(chunk + 0, macl); 237 | encode_u32be(chunk + 4, macr); 238 | 239 | /* Write encrypted chunk */ 240 | ssize_t len = msglen + BLOWFISH_BLOCK_LENGTH; 241 | ssize_t w = write(STDOUT_FILENO, chunk, len); 242 | if (w == -1) 243 | DIE_ERRNO("writing ciphertext"); 244 | if (w != len) 245 | DIE("failed to write ciphertext"); 246 | 247 | if (z == 0) 248 | break; // EOF 249 | } 250 | 251 | } 252 | 253 | static void 254 | bp_decrypt(struct blowfish *crypt, struct blowfish *mac) 255 | { 256 | size_t len = 0; 257 | uint64_t ctr = 0; 258 | uint32_t macl = 0; 259 | uint32_t macr = 0; 260 | static uint8_t chunk[CHUNK_SIZE]; 261 | 262 | for (;;) { 263 | /* Read in at least the header */ 264 | size_t headerlen = BLOWFISH_BLOCK_LENGTH + CHUNK_SIZE_SIZE; 265 | while (len < headerlen) { 266 | ssize_t z = read(STDIN_FILENO, chunk + len, CHUNK_SIZE - len); 267 | if (z == -1) 268 | DIE_ERRNO("reading ciphertext"); 269 | if (z == 0) 270 | DIE("premature end of ciphertext"); 271 | len += z; 272 | } 273 | 274 | /* Compute the first 8 bytes of the pad */ 275 | uint8_t pad[BLOWFISH_BLOCK_LENGTH]; 276 | uint32_t padl = ctr >> 32; 277 | uint32_t padr = ctr; // don't increment counter yet 278 | blowfish_encrypt(crypt, &padl, &padr); 279 | encode_u32be(pad + 0, padl); 280 | encode_u32be(pad + 4, padr); 281 | 282 | /* Decrypt the chunk length */ 283 | size_t msglen = 0; 284 | for (int i = 0; i < CHUNK_SIZE_SIZE; i++) { 285 | msglen <<= 8; 286 | msglen |= chunk[BLOWFISH_BLOCK_LENGTH + i] ^ pad[i]; 287 | } 288 | size_t msglen_min = CHUNK_SIZE_SIZE; 289 | size_t msglen_max = CHUNK_SIZE - BLOWFISH_BLOCK_LENGTH; 290 | if (msglen < msglen_min || msglen > msglen_max) 291 | DIE("ciphertext is damaged"); 292 | 293 | /* Read remainder of chunk */ 294 | size_t blocklen = BLOWFISH_BLOCK_LENGTH; 295 | size_t nblocks = (msglen + blocklen - 1) / blocklen; 296 | ssize_t remainder = msglen - len + blocklen; 297 | if (remainder > 0) { 298 | ssize_t z = full_read(STDIN_FILENO, chunk + len, remainder); 299 | if (z == -1) 300 | DIE_ERRNO("reading ciphertext"); 301 | if (z != remainder) 302 | DIE("premature end of ciphertext"); 303 | len += z; 304 | } 305 | 306 | /* Decrypt the buffer */ 307 | for (size_t i = 0; i < nblocks; i++) { 308 | uint32_t pl = ctr >> 32; 309 | uint32_t pr = ctr++; 310 | blowfish_encrypt(crypt, &pl, &pr); 311 | 312 | /* Extract ciphertext */ 313 | uint32_t cl, cr; 314 | size_t off = (i + 1) * BLOWFISH_BLOCK_LENGTH; 315 | if ((i + 1) * BLOWFISH_BLOCK_LENGTH > msglen) { 316 | /* Handle the final partial block in a temporary buffer 317 | * in order to pad it. The chunk buffer might have bytes 318 | * belonging to the next chunk immediately after this 319 | * partial block, so that space isn't available. 320 | */ 321 | uint8_t tmp[BLOWFISH_BLOCK_LENGTH]; 322 | int padding = (i + 1) * BLOWFISH_BLOCK_LENGTH - msglen; 323 | encode_u32be(tmp + 0, pl); 324 | encode_u32be(tmp + 4, pr); 325 | memcpy(tmp, chunk + off, 8 - padding); 326 | cl = decode_u32be(tmp + 0); 327 | cr = decode_u32be(tmp + 4); 328 | encode_u32be(tmp + 0, pl ^ cl); 329 | encode_u32be(tmp + 4, pr ^ cr); 330 | memcpy(chunk + off, tmp, 8 - padding); 331 | } else { 332 | cl = decode_u32be(chunk + off + 0); 333 | cr = decode_u32be(chunk + off + 4); 334 | encode_u32be(chunk + off + 0, pl ^ cl); 335 | encode_u32be(chunk + off + 4, pr ^ cr); 336 | } 337 | 338 | /* Compute MAC */ 339 | macl ^= cl; 340 | macr ^= cr; 341 | blowfish_encrypt(mac, &macl, ¯); 342 | } 343 | 344 | /* Check the MAC */ 345 | uint32_t cl = decode_u32be(chunk + 0); 346 | uint32_t cr = decode_u32be(chunk + 4); 347 | if (macl != cl || macr != cr) 348 | DIE("ciphertext is damaged"); 349 | 350 | /* Quit after the empty chunk has been authenticated */ 351 | if (msglen == CHUNK_SIZE_SIZE) 352 | break; 353 | 354 | /* Write out decrypted ciphertext */ 355 | size_t outlen = msglen - CHUNK_SIZE_SIZE; 356 | ssize_t w = write(STDOUT_FILENO, chunk + headerlen, outlen); 357 | if (w == -1) 358 | DIE_ERRNO("writing plaintext"); 359 | if ((size_t)w != outlen) 360 | DIE("failed to write plaintext"); 361 | 362 | /* Move unprocessed bytes to beginning */ 363 | size_t discard = msglen + BLOWFISH_BLOCK_LENGTH; 364 | memmove(chunk, chunk + discard, len - discard); 365 | len -= discard; 366 | } 367 | } 368 | 369 | static void 370 | usage(FILE *o) 371 | { 372 | fprintf(o, "usage: blowpipe [-D|-E] [-c cost] [-k file] [-w]\n"); 373 | } 374 | 375 | int 376 | main(int argc, char **argv) 377 | { 378 | /* Options */ 379 | const char *keyfile = 0; 380 | int cost = -1; 381 | unsigned eflags = 0; 382 | enum {MODE_ENCRYPT = 1, MODE_DECRYPT} mode = 0; 383 | 384 | int option; 385 | while ((option = getopt(argc, argv, "DEc:hk:w")) != -1) { 386 | switch (option) { 387 | case 'E': 388 | mode = MODE_ENCRYPT; 389 | break; 390 | case 'D': 391 | mode = MODE_DECRYPT; 392 | break; 393 | case 'c': 394 | cost = atoi(optarg); 395 | if (cost < 0 || cost > BLOWFISH_MAX_COST) 396 | DIE("invalid cost (must be 1 to 63)"); 397 | break; 398 | case 'h': 399 | usage(stdout); 400 | exit(EXIT_SUCCESS); 401 | break; 402 | case 'k': 403 | keyfile = optarg; 404 | break; 405 | case 'w': 406 | eflags |= FLAG_WAIT; 407 | break; 408 | default: 409 | exit(EXIT_FAILURE); 410 | } 411 | } 412 | 413 | /* Check for invalid option combinations */ 414 | if (mode == MODE_DECRYPT && (eflags & FLAG_WAIT)) 415 | DIE("wait option (-w) is only for encryption (-E)"); 416 | 417 | /* Make sure there are no more arguments */ 418 | if (argv[optind]) 419 | DIE("excess non-option command line arguments: %s", argv[optind]); 420 | 421 | char salt[SALT_LENGTH + 1]; 422 | struct blowfish crypt[1]; 423 | struct blowfish mac[1]; 424 | 425 | /* Get the salt before asking for a password, in case it fails */ 426 | switch (mode) { 427 | case MODE_ENCRYPT: { 428 | generate_salt(salt); 429 | } break; 430 | case MODE_DECRYPT: { 431 | read_salt(STDIN_FILENO, salt); 432 | int in_cost = salt[SALT_LENGTH] + 256; 433 | in_cost = (in_cost - salt[SALT_LENGTH - 1]) % 256; 434 | if (in_cost > BLOWFISH_MAX_COST) 435 | DIE("ciphertext is damaged"); 436 | if (cost == -1) 437 | cost = MAXIMUM_INPUT_COST; 438 | if (in_cost > cost) 439 | DIE("bcrypt cost exceeds maximum (%d > %d), use -c to adjust", 440 | in_cost, cost); 441 | cost = in_cost; 442 | } break; 443 | default: { 444 | fputs("blowpipe: ", stderr); 445 | fputs("must select encrypt (-E) or decrypt (-D)\n", stderr); 446 | usage(stderr); 447 | exit(EXIT_FAILURE); 448 | } 449 | } 450 | 451 | /* Derive the key */ 452 | char key[BLOWFISH_DIGEST_LENGTH]; 453 | if (!keyfile) { 454 | int verify = mode == MODE_ENCRYPT; 455 | if (cost == -1) 456 | cost = PASSPHRASE_COST; 457 | passphrase_kdf(key, salt, cost, verify); 458 | } else { 459 | int fd = open(keyfile, O_RDONLY); 460 | if (fd == -1) 461 | DIE_ERRNO(keyfile); 462 | if (cost == -1) 463 | cost = KEYFILE_COST; 464 | key_read(fd, key, salt, cost); 465 | close(fd); 466 | } 467 | salt[SALT_LENGTH] = salt[SALT_LENGTH - 1] + cost; 468 | blowfish_init(crypt, key, BLOWFISH_DIGEST_LENGTH); 469 | 470 | /* Initialize the MAC by deriving another key */ 471 | uint8_t zero[BLOWFISH_SALT_LENGTH] = {0}; 472 | char mackey[BLOWFISH_DIGEST_LENGTH]; 473 | blowfish_bcrypt(mackey, key, BLOWFISH_DIGEST_LENGTH, zero, 0); 474 | blowfish_init(mac, mackey, BLOWFISH_DIGEST_LENGTH); 475 | 476 | ssize_t z; 477 | switch (mode) { 478 | case MODE_ENCRYPT: 479 | z = write(STDOUT_FILENO, salt, SALT_LENGTH + 1); 480 | if (z == -1) 481 | DIE_ERRNO("writing ciphertext"); 482 | if (z < SALT_LENGTH + 1) 483 | DIE("failed to write ciphertext"); 484 | bp_encrypt(crypt, mac, eflags); 485 | break; 486 | case MODE_DECRYPT: 487 | bp_decrypt(crypt, mac); 488 | break; 489 | } 490 | return 0; 491 | } 492 | -------------------------------------------------------------------------------- /blowfish.c: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include "blowfish.h" 4 | 5 | static const uint32_t blowfish_p[] = { 6 | 0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 7 | 0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89, 8 | 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c, 9 | 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, 10 | 0x9216d5d9, 0x8979fb1b, 11 | }; 12 | 13 | static const uint32_t blowfish_s[] = { 14 | 0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 15 | 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99, 16 | 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16, 17 | 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e, 18 | 0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee, 19 | 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013, 20 | 0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, 21 | 0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e, 22 | 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60, 23 | 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440, 24 | 0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce, 25 | 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a, 26 | 0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e, 27 | 0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677, 28 | 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193, 29 | 0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032, 30 | 0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88, 31 | 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239, 32 | 0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, 33 | 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0, 34 | 0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3, 35 | 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98, 36 | 0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88, 37 | 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe, 38 | 0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6, 39 | 0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d, 40 | 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b, 41 | 0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7, 42 | 0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba, 43 | 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463, 44 | 0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 45 | 0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09, 46 | 0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3, 47 | 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb, 48 | 0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279, 49 | 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8, 50 | 0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, 51 | 0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82, 52 | 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db, 53 | 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573, 54 | 0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0, 55 | 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b, 56 | 0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790, 57 | 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8, 58 | 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4, 59 | 0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0, 60 | 0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7, 61 | 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c, 62 | 0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, 63 | 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1, 64 | 0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299, 65 | 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9, 66 | 0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477, 67 | 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf, 68 | 0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49, 69 | 0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af, 70 | 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa, 71 | 0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5, 72 | 0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41, 73 | 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915, 74 | 0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, 75 | 0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915, 76 | 0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664, 77 | 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a, 78 | 0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 79 | 0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266, 80 | 0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1, 81 | 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e, 82 | 0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6, 83 | 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1, 84 | 0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, 85 | 0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1, 86 | 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737, 87 | 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8, 88 | 0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff, 89 | 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd, 90 | 0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701, 91 | 0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7, 92 | 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41, 93 | 0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331, 94 | 0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf, 95 | 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af, 96 | 0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 97 | 0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87, 98 | 0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c, 99 | 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2, 100 | 0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16, 101 | 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd, 102 | 0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, 103 | 0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509, 104 | 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e, 105 | 0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3, 106 | 0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f, 107 | 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a, 108 | 0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 109 | 0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960, 110 | 0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66, 111 | 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28, 112 | 0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802, 113 | 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84, 114 | 0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 115 | 0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf, 116 | 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14, 117 | 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e, 118 | 0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50, 119 | 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7, 120 | 0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8, 121 | 0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281, 122 | 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99, 123 | 0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696, 124 | 0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128, 125 | 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73, 126 | 0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 127 | 0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0, 128 | 0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105, 129 | 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250, 130 | 0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3, 131 | 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285, 132 | 0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, 133 | 0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061, 134 | 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb, 135 | 0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e, 136 | 0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735, 137 | 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc, 138 | 0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, 139 | 0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340, 140 | 0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20, 141 | 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7, 142 | 0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 143 | 0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068, 144 | 0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af, 145 | 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840, 146 | 0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45, 147 | 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504, 148 | 0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, 149 | 0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb, 150 | 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee, 151 | 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6, 152 | 0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42, 153 | 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b, 154 | 0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2, 155 | 0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb, 156 | 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527, 157 | 0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b, 158 | 0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33, 159 | 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c, 160 | 0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3, 161 | 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc, 162 | 0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17, 163 | 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564, 164 | 0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b, 165 | 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115, 166 | 0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922, 167 | 0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728, 168 | 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0, 169 | 0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e, 170 | 0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37, 171 | 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d, 172 | 0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, 173 | 0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b, 174 | 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3, 175 | 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb, 176 | 0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d, 177 | 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c, 178 | 0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350, 179 | 0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9, 180 | 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a, 181 | 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe, 182 | 0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d, 183 | 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc, 184 | 0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f, 185 | 0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61, 186 | 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2, 187 | 0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9, 188 | 0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2, 189 | 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c, 190 | 0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, 191 | 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633, 192 | 0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10, 193 | 0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169, 194 | 0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52, 195 | 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027, 196 | 0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5, 197 | 0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62, 198 | 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634, 199 | 0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76, 200 | 0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24, 201 | 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc, 202 | 0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, 203 | 0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c, 204 | 0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837, 205 | 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0, 206 | 0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 207 | 0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe, 208 | 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b, 209 | 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4, 210 | 0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8, 211 | 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6, 212 | 0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 213 | 0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22, 214 | 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4, 215 | 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6, 216 | 0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9, 217 | 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59, 218 | 0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593, 219 | 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51, 220 | 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28, 221 | 0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c, 222 | 0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b, 223 | 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28, 224 | 0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 225 | 0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd, 226 | 0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a, 227 | 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319, 228 | 0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb, 229 | 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f, 230 | 0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, 231 | 0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32, 232 | 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680, 233 | 0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166, 234 | 0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae, 235 | 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb, 236 | 0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 237 | 0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47, 238 | 0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370, 239 | 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d, 240 | 0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84, 241 | 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048, 242 | 0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, 243 | 0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd, 244 | 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9, 245 | 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7, 246 | 0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38, 247 | 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f, 248 | 0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c, 249 | 0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525, 250 | 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1, 251 | 0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442, 252 | 0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964, 253 | 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e, 254 | 0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 255 | 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d, 256 | 0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f, 257 | 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299, 258 | 0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02, 259 | 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc, 260 | 0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, 261 | 0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a, 262 | 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6, 263 | 0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b, 264 | 0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0, 265 | 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060, 266 | 0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 267 | 0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9, 268 | 0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f, 269 | 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6, 270 | }; 271 | 272 | static uint32_t 273 | blowfish_f(const uint32_t s[4][256], uint32_t x) 274 | { 275 | /* big endian */ 276 | uint32_t b = 0xff; 277 | uint32_t h = s[0][(x >> 24) & b] + s[1][(x >> 16) & b]; 278 | return (h ^ s[2][(x >> 8) & b]) + s[3][(x >> 0) & b]; 279 | } 280 | 281 | static uint32_t 282 | blowfish_read(const uint8_t *p) 283 | { 284 | /* big endian */ 285 | return ((uint32_t)p[0] << 24) | 286 | ((uint32_t)p[1] << 16) | 287 | ((uint32_t)p[2] << 8) | 288 | ((uint32_t)p[3] << 0); 289 | } 290 | 291 | static void 292 | blowfish_write(uint8_t *p, uint32_t v) 293 | { 294 | /* big endian */ 295 | p[0] = (uint8_t)(v >> 24); 296 | p[1] = (uint8_t)(v >> 16); 297 | p[2] = (uint8_t)(v >> 8); 298 | p[3] = (uint8_t)(v >> 0); 299 | } 300 | 301 | void 302 | blowfish_encrypt(const struct blowfish *ctx, uint32_t *bl, uint32_t *br) 303 | { 304 | uint32_t xl = *bl; 305 | uint32_t xr = *br; 306 | for (int i = 0; i < 16; i += 2) { 307 | xl ^= ctx->p[i]; 308 | xr ^= blowfish_f(ctx->s, xl); 309 | xr ^= ctx->p[i + 1]; 310 | xl ^= blowfish_f(ctx->s, xr); 311 | } 312 | xl ^= ctx->p[16]; 313 | xr ^= ctx->p[17]; 314 | *bl = xr; 315 | *br = xl; 316 | } 317 | 318 | void 319 | blowfish_decrypt(const struct blowfish *ctx, uint32_t *bl, uint32_t *br) 320 | { 321 | uint32_t xl = *bl; 322 | uint32_t xr = *br; 323 | for (int i = 16; i > 0; i -= 2) { 324 | xl ^= ctx->p[i + 1]; 325 | xr ^= blowfish_f(ctx->s, xl); 326 | xr ^= ctx->p[i]; 327 | xl ^= blowfish_f(ctx->s, xr); 328 | } 329 | xl ^= ctx->p[1]; 330 | xr ^= ctx->p[0]; 331 | *bl = xr; 332 | *br = xl; 333 | } 334 | 335 | static void 336 | blowfish_expand( 337 | struct blowfish *ctx, 338 | const void *key, 339 | int len, 340 | const void *salt) 341 | { 342 | const uint8_t *k = key; 343 | for (int i = 0; i < 18; i++) { 344 | /* big endian */ 345 | ctx->p[i] ^= (uint32_t)k[(i * 4 + 0) % len] << 24; 346 | ctx->p[i] ^= (uint32_t)k[(i * 4 + 1) % len] << 16; 347 | ctx->p[i] ^= (uint32_t)k[(i * 4 + 2) % len] << 8; 348 | ctx->p[i] ^= (uint32_t)k[(i * 4 + 3) % len] << 0; 349 | } 350 | 351 | uint32_t esalt[4]; 352 | esalt[0] = blowfish_read((uint8_t *)salt + 0); 353 | esalt[1] = blowfish_read((uint8_t *)salt + 4); 354 | esalt[2] = blowfish_read((uint8_t *)salt + 8); 355 | esalt[3] = blowfish_read((uint8_t *)salt + 12); 356 | 357 | uint32_t ctext[2] = {0}; 358 | for (int i = 0; i < 18; i += 2) { 359 | ctext[0] ^= esalt[(i + 0) % 4]; 360 | ctext[1] ^= esalt[(i + 1) % 4]; 361 | blowfish_encrypt(ctx, ctext, ctext + 1); 362 | ctx->p[i + 0] = ctext[0]; 363 | ctx->p[i + 1] = ctext[1]; 364 | } 365 | 366 | for (int i = 0; i < 4; i++) { 367 | for (int j = 0; j < 256; j += 2) { 368 | ctext[0] ^= esalt[(j + 2) % 4]; 369 | ctext[1] ^= esalt[(j + 3) % 4]; 370 | blowfish_encrypt(ctx, ctext, ctext + 1); 371 | ctx->s[i][j + 0] = ctext[0]; 372 | ctx->s[i][j + 1] = ctext[1]; 373 | } 374 | } 375 | } 376 | 377 | void 378 | blowfish_init(struct blowfish *ctx, const void *key, int len) 379 | { 380 | assert(len >= 0 && len <= BLOWFISH_MAX_KEY_LENGTH); 381 | 382 | unsigned char zero[BLOWFISH_SALT_LENGTH] = {0}; 383 | if (!len) { 384 | key = zero; 385 | len = sizeof(zero); 386 | } 387 | 388 | memcpy(ctx->s, blowfish_s, sizeof(blowfish_s)); 389 | memcpy(ctx->p, blowfish_p, sizeof(blowfish_p)); 390 | blowfish_expand(ctx, key, len, &zero); 391 | } 392 | 393 | void 394 | blowfish_bcrypt( 395 | void *digest, 396 | const void *pwd, 397 | int len, 398 | const void *salt, 399 | int cost) 400 | { 401 | assert(len >= 0 && len <= BLOWFISH_MAX_KEY_LENGTH); 402 | assert(cost >= 0 && cost <= BLOWFISH_MAX_COST); 403 | 404 | unsigned char zero[BLOWFISH_SALT_LENGTH] = {0}; 405 | if (!len) { 406 | pwd = zero; 407 | len = sizeof(zero); 408 | } 409 | 410 | struct blowfish ctx[1]; 411 | memcpy(ctx->s, blowfish_s, sizeof(blowfish_s)); 412 | memcpy(ctx->p, blowfish_p, sizeof(blowfish_p)); 413 | 414 | blowfish_expand(ctx, pwd, len, salt); 415 | 416 | unsigned long long n = 1ULL << cost; 417 | for (unsigned long long i = 0; i < n; i++) { 418 | blowfish_expand(ctx, pwd, len, &zero); 419 | blowfish_expand(ctx, salt, BLOWFISH_SALT_LENGTH, &zero); 420 | } 421 | 422 | /* ctext = "OrpheanBeholderScryDoubt" */ 423 | uint32_t ctext[6] = { 424 | 0x4f727068, 0x65616e42, 0x65686f6c, 425 | 0x64657253, 0x63727944, 0x6f756274, 426 | }; 427 | for (int i = 0; i < 64; i++) 428 | for (int j = 0; j < 6; j += 2) 429 | blowfish_encrypt(ctx, ctext + j, ctext + j + 1); 430 | for (int i = 0; i < 6; i++) 431 | blowfish_write((uint8_t *)digest + i * 4, ctext[i]); 432 | } 433 | 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