PHP  
 PHP: Test and Code Coverage Analysis
downloads | QA | documentation | faq | getting help | mailing lists | reporting bugs | php.net sites | links | my php.net 
 

LCOV - code coverage report
Current view: top level - ext/standard - crypt_blowfish.c (source / functions) Hit Total Coverage
Test: PHP Code Coverage Lines: 180 192 93.8 %
Date: 2014-08-04 Functions: 7 7 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* $Id$ */
       2             : /*
       3             :  * The crypt_blowfish homepage is:
       4             :  *
       5             :  *      http://www.openwall.com/crypt/
       6             :  *
       7             :  * This code comes from John the Ripper password cracker, with reentrant
       8             :  * and crypt(3) interfaces added, but optimizations specific to password
       9             :  * cracking removed.
      10             :  *
      11             :  * Written by Solar Designer <solar at openwall.com> in 1998-2011.
      12             :  * No copyright is claimed, and the software is hereby placed in the public
      13             :  * domain. In case this attempt to disclaim copyright and place the software
      14             :  * in the public domain is deemed null and void, then the software is
      15             :  * Copyright (c) 1998-2011 Solar Designer and it is hereby released to the
      16             :  * general public under the following terms:
      17             :  *
      18             :  * Redistribution and use in source and binary forms, with or without
      19             :  * modification, are permitted.
      20             :  *
      21             :  * There's ABSOLUTELY NO WARRANTY, express or implied.
      22             :  *
      23             :  * It is my intent that you should be able to use this on your system,
      24             :  * as part of a software package, or anywhere else to improve security,
      25             :  * ensure compatibility, or for any other purpose. I would appreciate
      26             :  * it if you give credit where it is due and keep your modifications in
      27             :  * the public domain as well, but I don't require that in order to let
      28             :  * you place this code and any modifications you make under a license
      29             :  * of your choice.
      30             :  *
      31             :  * This implementation is mostly compatible with OpenBSD's bcrypt.c (prefix
      32             :  * "$2a$") by Niels Provos <provos at citi.umich.edu>, and uses some of his
      33             :  * ideas. The password hashing algorithm was designed by David Mazieres
      34             :  * <dm at lcs.mit.edu>. For more information on the level of compatibility,
      35             :  * please refer to the comments in BF_set_key() below and to the crypt(3)
      36             :  * man page included in the crypt_blowfish tarball.
      37             :  *
      38             :  * There's a paper on the algorithm that explains its design decisions:
      39             :  *
      40             :  *      http://www.usenix.org/events/usenix99/provos.html
      41             :  *
      42             :  * Some of the tricks in BF_ROUND might be inspired by Eric Young's
      43             :  * Blowfish library (I can't be sure if I would think of something if I
      44             :  * hadn't seen his code).
      45             :  */
      46             : 
      47             : #include <string.h>
      48             : 
      49             : #include <errno.h>
      50             : #ifndef __set_errno
      51             : #define __set_errno(val) errno = (val)
      52             : #endif
      53             : 
      54             : /* Just to make sure the prototypes match the actual definitions */
      55             : #include "crypt_blowfish.h"
      56             : 
      57             : #ifdef __i386__
      58             : #define BF_ASM                          0
      59             : #define BF_SCALE                        1
      60             : #elif defined(__x86_64__) || defined(__alpha__) || defined(__hppa__)
      61             : #define BF_ASM                          0
      62             : #define BF_SCALE                        1
      63             : #else
      64             : #define BF_ASM                          0
      65             : #define BF_SCALE                        0
      66             : #endif
      67             : 
      68             : typedef unsigned int BF_word;
      69             : typedef signed int BF_word_signed;
      70             : 
      71             : /* Number of Blowfish rounds, this is also hardcoded into a few places */
      72             : #define BF_N                            16
      73             : 
      74             : typedef BF_word BF_key[BF_N + 2];
      75             : 
      76             : typedef struct {
      77             :         BF_word S[4][0x100];
      78             :         BF_key P;
      79             : } BF_ctx;
      80             : 
      81             : /*
      82             :  * Magic IV for 64 Blowfish encryptions that we do at the end.
      83             :  * The string is "OrpheanBeholderScryDoubt" on big-endian.
      84             :  */
      85             : static BF_word BF_magic_w[6] = {
      86             :         0x4F727068, 0x65616E42, 0x65686F6C,
      87             :         0x64657253, 0x63727944, 0x6F756274
      88             : };
      89             : 
      90             : /*
      91             :  * P-box and S-box tables initialized with digits of Pi.
      92             :  */
      93             : static BF_ctx BF_init_state = {
      94             :         {
      95             :                 {
      96             :                         0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
      97             :                         0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
      98             :                         0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
      99             :                         0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
     100             :                         0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
     101             :                         0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
     102             :                         0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
     103             :                         0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
     104             :                         0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
     105             :                         0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
     106             :                         0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce,
     107             :                         0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
     108             :                         0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
     109             :                         0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
     110             :                         0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
     111             :                         0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
     112             :                         0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88,
     113             :                         0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
     114             :                         0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
     115             :                         0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
     116             :                         0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
     117             :                         0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
     118             :                         0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88,
     119             :                         0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
     120             :                         0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
     121             :                         0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
     122             :                         0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
     123             :                         0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
     124             :                         0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba,
     125             :                         0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
     126             :                         0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
     127             :                         0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
     128             :                         0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
     129             :                         0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
     130             :                         0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
     131             :                         0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
     132             :                         0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
     133             :                         0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
     134             :                         0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
     135             :                         0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
     136             :                         0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0,
     137             :                         0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
     138             :                         0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
     139             :                         0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
     140             :                         0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
     141             :                         0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
     142             :                         0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7,
     143             :                         0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
     144             :                         0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
     145             :                         0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
     146             :                         0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
     147             :                         0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
     148             :                         0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477,
     149             :                         0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
     150             :                         0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
     151             :                         0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
     152             :                         0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
     153             :                         0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
     154             :                         0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41,
     155             :                         0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
     156             :                         0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
     157             :                         0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
     158             :                         0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
     159             :                         0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a
     160             :                 }, {
     161             :                         0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623,
     162             :                         0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
     163             :                         0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
     164             :                         0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
     165             :                         0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
     166             :                         0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
     167             :                         0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e,
     168             :                         0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
     169             :                         0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
     170             :                         0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
     171             :                         0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff,
     172             :                         0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
     173             :                         0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701,
     174             :                         0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
     175             :                         0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
     176             :                         0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
     177             :                         0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf,
     178             :                         0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
     179             :                         0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e,
     180             :                         0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
     181             :                         0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
     182             :                         0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
     183             :                         0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16,
     184             :                         0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
     185             :                         0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
     186             :                         0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
     187             :                         0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
     188             :                         0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
     189             :                         0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f,
     190             :                         0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
     191             :                         0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4,
     192             :                         0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
     193             :                         0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
     194             :                         0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
     195             :                         0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
     196             :                         0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
     197             :                         0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510,
     198             :                         0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
     199             :                         0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
     200             :                         0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
     201             :                         0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50,
     202             :                         0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
     203             :                         0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8,
     204             :                         0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
     205             :                         0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
     206             :                         0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
     207             :                         0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128,
     208             :                         0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
     209             :                         0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0,
     210             :                         0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
     211             :                         0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
     212             :                         0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
     213             :                         0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3,
     214             :                         0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
     215             :                         0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
     216             :                         0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
     217             :                         0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
     218             :                         0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
     219             :                         0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735,
     220             :                         0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
     221             :                         0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9,
     222             :                         0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
     223             :                         0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
     224             :                         0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7
     225             :                 }, {
     226             :                         0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934,
     227             :                         0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
     228             :                         0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
     229             :                         0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
     230             :                         0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
     231             :                         0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
     232             :                         0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a,
     233             :                         0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
     234             :                         0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
     235             :                         0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
     236             :                         0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42,
     237             :                         0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
     238             :                         0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2,
     239             :                         0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
     240             :                         0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
     241             :                         0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
     242             :                         0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33,
     243             :                         0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
     244             :                         0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3,
     245             :                         0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
     246             :                         0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
     247             :                         0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
     248             :                         0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b,
     249             :                         0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
     250             :                         0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
     251             :                         0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
     252             :                         0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
     253             :                         0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
     254             :                         0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37,
     255             :                         0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
     256             :                         0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804,
     257             :                         0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
     258             :                         0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
     259             :                         0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
     260             :                         0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
     261             :                         0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
     262             :                         0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350,
     263             :                         0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
     264             :                         0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
     265             :                         0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
     266             :                         0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d,
     267             :                         0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
     268             :                         0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f,
     269             :                         0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
     270             :                         0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
     271             :                         0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
     272             :                         0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2,
     273             :                         0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
     274             :                         0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e,
     275             :                         0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
     276             :                         0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
     277             :                         0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
     278             :                         0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52,
     279             :                         0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
     280             :                         0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
     281             :                         0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
     282             :                         0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
     283             :                         0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
     284             :                         0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24,
     285             :                         0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
     286             :                         0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4,
     287             :                         0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
     288             :                         0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
     289             :                         0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0
     290             :                 }, {
     291             :                         0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b,
     292             :                         0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
     293             :                         0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
     294             :                         0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
     295             :                         0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
     296             :                         0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
     297             :                         0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304,
     298             :                         0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
     299             :                         0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
     300             :                         0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
     301             :                         0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9,
     302             :                         0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
     303             :                         0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593,
     304             :                         0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
     305             :                         0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
     306             :                         0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
     307             :                         0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b,
     308             :                         0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
     309             :                         0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c,
     310             :                         0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
     311             :                         0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
     312             :                         0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
     313             :                         0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb,
     314             :                         0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
     315             :                         0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
     316             :                         0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
     317             :                         0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
     318             :                         0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
     319             :                         0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae,
     320             :                         0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
     321             :                         0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5,
     322             :                         0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
     323             :                         0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
     324             :                         0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
     325             :                         0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84,
     326             :                         0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
     327             :                         0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8,
     328             :                         0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
     329             :                         0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
     330             :                         0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
     331             :                         0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38,
     332             :                         0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
     333             :                         0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c,
     334             :                         0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
     335             :                         0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
     336             :                         0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
     337             :                         0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964,
     338             :                         0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
     339             :                         0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8,
     340             :                         0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
     341             :                         0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
     342             :                         0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
     343             :                         0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02,
     344             :                         0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
     345             :                         0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
     346             :                         0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
     347             :                         0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
     348             :                         0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
     349             :                         0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0,
     350             :                         0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
     351             :                         0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e,
     352             :                         0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
     353             :                         0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
     354             :                         0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6
     355             :                 }
     356             :         }, {
     357             :                 0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
     358             :                 0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
     359             :                 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
     360             :                 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
     361             :                 0x9216d5d9, 0x8979fb1b
     362             :         }
     363             : };
     364             : 
     365             : static unsigned char BF_itoa64[64 + 1] =
     366             :         "./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
     367             : 
     368             : static unsigned char BF_atoi64[0x60] = {
     369             :         64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 0, 1,
     370             :         54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 64, 64, 64, 64, 64,
     371             :         64, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
     372             :         17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 64, 64, 64, 64, 64,
     373             :         64, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,
     374             :         43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 64, 64, 64, 64, 64
     375             : };
     376             : 
     377             : #define BF_safe_atoi64(dst, src) \
     378             : { \
     379             :         tmp = (unsigned char)(src); \
     380             :         if (tmp == '$') break; /* PHP hack */ \
     381             :         if ((unsigned int)(tmp -= 0x20) >= 0x60) return -1; \
     382             :         tmp = BF_atoi64[tmp]; \
     383             :         if (tmp > 63) return -1; \
     384             :         (dst) = tmp; \
     385             : }
     386             : 
     387          77 : static int BF_decode(BF_word *dst, const char *src, int size)
     388             : {
     389          77 :         unsigned char *dptr = (unsigned char *)dst;
     390          77 :         unsigned char *end = dptr + size;
     391          77 :         const unsigned char *sptr = (const unsigned char *)src;
     392             :         unsigned int tmp, c1, c2, c3, c4;
     393             : 
     394             :         do {
     395         462 :                 BF_safe_atoi64(c1, *sptr++);
     396         462 :                 BF_safe_atoi64(c2, *sptr++);
     397         462 :                 *dptr++ = (c1 << 2) | ((c2 & 0x30) >> 4);
     398         462 :                 if (dptr >= end) break;
     399             : 
     400         385 :                 BF_safe_atoi64(c3, *sptr++);
     401         385 :                 *dptr++ = ((c2 & 0x0F) << 4) | ((c3 & 0x3C) >> 2);
     402         385 :                 if (dptr >= end) break;
     403             : 
     404         385 :                 BF_safe_atoi64(c4, *sptr++);
     405         385 :                 *dptr++ = ((c3 & 0x03) << 6) | c4;
     406         385 :         } while (dptr < end);
     407             : 
     408         154 :         while (dptr < end) /* PHP hack */
     409           0 :                 *dptr++ = 0;
     410             : 
     411          77 :         return 0;
     412             : }
     413             : 
     414          77 : static void BF_encode(char *dst, const BF_word *src, int size)
     415             : {
     416          77 :         const unsigned char *sptr = (const unsigned char *)src;
     417          77 :         const unsigned char *end = sptr + size;
     418          77 :         unsigned char *dptr = (unsigned char *)dst;
     419             :         unsigned int c1, c2;
     420             : 
     421             :         do {
     422         616 :                 c1 = *sptr++;
     423         616 :                 *dptr++ = BF_itoa64[c1 >> 2];
     424         616 :                 c1 = (c1 & 0x03) << 4;
     425         616 :                 if (sptr >= end) {
     426           0 :                         *dptr++ = BF_itoa64[c1];
     427           0 :                         break;
     428             :                 }
     429             : 
     430         616 :                 c2 = *sptr++;
     431         616 :                 c1 |= c2 >> 4;
     432         616 :                 *dptr++ = BF_itoa64[c1];
     433         616 :                 c1 = (c2 & 0x0f) << 2;
     434         616 :                 if (sptr >= end) {
     435          77 :                         *dptr++ = BF_itoa64[c1];
     436          77 :                         break;
     437             :                 }
     438             : 
     439         539 :                 c2 = *sptr++;
     440         539 :                 c1 |= c2 >> 6;
     441         539 :                 *dptr++ = BF_itoa64[c1];
     442         539 :                 *dptr++ = BF_itoa64[c2 & 0x3f];
     443         539 :         } while (sptr < end);
     444          77 : }
     445             : 
     446         154 : static void BF_swap(BF_word *x, int count)
     447             : {
     448             :         static int endianness_check = 1;
     449         154 :         char *is_little_endian = (char *)&endianness_check;
     450             :         BF_word tmp;
     451             : 
     452         154 :         if (*is_little_endian)
     453             :         do {
     454         770 :                 tmp = *x;
     455         770 :                 tmp = (tmp << 16) | (tmp >> 16);
     456         770 :                 *x++ = ((tmp & 0x00FF00FF) << 8) | ((tmp >> 8) & 0x00FF00FF);
     457         770 :         } while (--count);
     458         154 : }
     459             : 
     460             : #if BF_SCALE
     461             : /* Architectures which can shift addresses left by 2 bits with no extra cost */
     462             : #define BF_ROUND(L, R, N) \
     463             :         tmp1 = L & 0xFF; \
     464             :         tmp2 = L >> 8; \
     465             :         tmp2 &= 0xFF; \
     466             :         tmp3 = L >> 16; \
     467             :         tmp3 &= 0xFF; \
     468             :         tmp4 = L >> 24; \
     469             :         tmp1 = data.ctx.S[3][tmp1]; \
     470             :         tmp2 = data.ctx.S[2][tmp2]; \
     471             :         tmp3 = data.ctx.S[1][tmp3]; \
     472             :         tmp3 += data.ctx.S[0][tmp4]; \
     473             :         tmp3 ^= tmp2; \
     474             :         R ^= data.ctx.P[N + 1]; \
     475             :         tmp3 += tmp1; \
     476             :         R ^= tmp3;
     477             : #else
     478             : /* Architectures with no complicated addressing modes supported */
     479             : #define BF_INDEX(S, i) \
     480             :         (*((BF_word *)(((unsigned char *)S) + (i))))
     481             : #define BF_ROUND(L, R, N) \
     482             :         tmp1 = L & 0xFF; \
     483             :         tmp1 <<= 2; \
     484             :         tmp2 = L >> 6; \
     485             :         tmp2 &= 0x3FC; \
     486             :         tmp3 = L >> 14; \
     487             :         tmp3 &= 0x3FC; \
     488             :         tmp4 = L >> 22; \
     489             :         tmp4 &= 0x3FC; \
     490             :         tmp1 = BF_INDEX(data.ctx.S[3], tmp1); \
     491             :         tmp2 = BF_INDEX(data.ctx.S[2], tmp2); \
     492             :         tmp3 = BF_INDEX(data.ctx.S[1], tmp3); \
     493             :         tmp3 += BF_INDEX(data.ctx.S[0], tmp4); \
     494             :         tmp3 ^= tmp2; \
     495             :         R ^= data.ctx.P[N + 1]; \
     496             :         tmp3 += tmp1; \
     497             :         R ^= tmp3;
     498             : #endif
     499             : 
     500             : /*
     501             :  * Encrypt one block, BF_N is hardcoded here.
     502             :  */
     503             : #define BF_ENCRYPT \
     504             :         L ^= data.ctx.P[0]; \
     505             :         BF_ROUND(L, R, 0); \
     506             :         BF_ROUND(R, L, 1); \
     507             :         BF_ROUND(L, R, 2); \
     508             :         BF_ROUND(R, L, 3); \
     509             :         BF_ROUND(L, R, 4); \
     510             :         BF_ROUND(R, L, 5); \
     511             :         BF_ROUND(L, R, 6); \
     512             :         BF_ROUND(R, L, 7); \
     513             :         BF_ROUND(L, R, 8); \
     514             :         BF_ROUND(R, L, 9); \
     515             :         BF_ROUND(L, R, 10); \
     516             :         BF_ROUND(R, L, 11); \
     517             :         BF_ROUND(L, R, 12); \
     518             :         BF_ROUND(R, L, 13); \
     519             :         BF_ROUND(L, R, 14); \
     520             :         BF_ROUND(R, L, 15); \
     521             :         tmp4 = R; \
     522             :         R = L; \
     523             :         L = tmp4 ^ data.ctx.P[BF_N + 1];
     524             : 
     525             : #if BF_ASM
     526             : #define BF_body() \
     527             :         _BF_body_r(&data.ctx);
     528             : #else
     529             : #define BF_body() \
     530             :         L = R = 0; \
     531             :         ptr = data.ctx.P; \
     532             :         do { \
     533             :                 ptr += 2; \
     534             :                 BF_ENCRYPT; \
     535             :                 *(ptr - 2) = L; \
     536             :                 *(ptr - 1) = R; \
     537             :         } while (ptr < &data.ctx.P[BF_N + 2]); \
     538             : \
     539             :         ptr = data.ctx.S[0]; \
     540             :         do { \
     541             :                 ptr += 2; \
     542             :                 BF_ENCRYPT; \
     543             :                 *(ptr - 2) = L; \
     544             :                 *(ptr - 1) = R; \
     545             :         } while (ptr < &data.ctx.S[3][0xFF]);
     546             : #endif
     547             : 
     548         161 : static void BF_set_key(const char *key, BF_key expanded, BF_key initial,
     549             :     unsigned char flags)
     550             : {
     551         161 :         const char *ptr = key;
     552             :         unsigned int bug, i, j;
     553             :         BF_word safety, sign, diff, tmp[2];
     554             : 
     555             : /*
     556             :  * There was a sign extension bug in older revisions of this function. While
     557             :  * we would have liked to simply fix the bug and move on, we have to provide
     558             :  * a backwards compatibility feature (essentially the bug) for some systems and
     559             :  * a safety measure for some others. The latter is needed because for certain
     560             :  * multiple inputs to the buggy algorithm there exist easily found inputs to
     561             :  * the correct algorithm that produce the same hash. Thus, we optionally
     562             :  * deviate from the correct algorithm just enough to avoid such collisions.
     563             :  * While the bug itself affected the majority of passwords containing
     564             :  * characters with the 8th bit set (although only a percentage of those in a
     565             :  * collision-producing way), the anti-collision safety measure affects
     566             :  * only a subset of passwords containing the '\xff' character (not even all of
     567             :  * those passwords, just some of them). This character is not found in valid
     568             :  * UTF-8 sequences and is rarely used in popular 8-bit character encodings.
     569             :  * Thus, the safety measure is unlikely to cause much annoyance, and is a
     570             :  * reasonable tradeoff to use when authenticating against existing hashes that
     571             :  * are not reliably known to have been computed with the correct algorithm.
     572             :  *
     573             :  * We use an approach that tries to minimize side-channel leaks of password
     574             :  * information - that is, we mostly use fixed-cost bitwise operations instead
     575             :  * of branches or table lookups. (One conditional branch based on password
     576             :  * length remains. It is not part of the bug aftermath, though, and is
     577             :  * difficult and possibly unreasonable to avoid given the use of C strings by
     578             :  * the caller, which results in similar timing leaks anyway.)
     579             :  *
     580             :  * For actual implementation, we set an array index in the variable "bug"
     581             :  * (0 means no bug, 1 means sign extension bug emulation) and a flag in the
     582             :  * variable "safety" (bit 16 is set when the safety measure is requested).
     583             :  * Valid combinations of settings are:
     584             :  *
     585             :  * Prefix "$2a$": bug = 0, safety = 0x10000
     586             :  * Prefix "$2x$": bug = 1, safety = 0
     587             :  * Prefix "$2y$": bug = 0, safety = 0
     588             :  */
     589         161 :         bug = (unsigned int)flags & 1;
     590         161 :         safety = ((BF_word)flags & 2) << 15;
     591             : 
     592         161 :         sign = diff = 0;
     593             : 
     594        3059 :         for (i = 0; i < BF_N + 2; i++) {
     595        2898 :                 tmp[0] = tmp[1] = 0;
     596       14490 :                 for (j = 0; j < 4; j++) {
     597       11592 :                         tmp[0] <<= 8;
     598       11592 :                         tmp[0] |= (unsigned char)*ptr; /* correct */
     599       11592 :                         tmp[1] <<= 8;
     600       11592 :                         tmp[1] |= (BF_word_signed)(signed char)*ptr; /* bug */
     601             : /*
     602             :  * Sign extension in the first char has no effect - nothing to overwrite yet,
     603             :  * and those extra 24 bits will be fully shifted out of the 32-bit word. For
     604             :  * chars 2, 3, 4 in each four-char block, we set bit 7 of "sign" if sign
     605             :  * extension in tmp[1] occurs. Once this flag is set, it remains set.
     606             :  */
     607       11592 :                         if (j)
     608        8694 :                                 sign |= tmp[1] & 0x80;
     609       11592 :                         if (!*ptr)
     610        1338 :                                 ptr = key;
     611             :                         else
     612       10254 :                                 ptr++;
     613             :                 }
     614        2898 :                 diff |= tmp[0] ^ tmp[1]; /* Non-zero on any differences */
     615             : 
     616        2898 :                 expanded[i] = tmp[bug];
     617        2898 :                 initial[i] = BF_init_state.P[i] ^ tmp[bug];
     618             :         }
     619             : 
     620             : /*
     621             :  * At this point, "diff" is zero iff the correct and buggy algorithms produced
     622             :  * exactly the same result. If so and if "sign" is non-zero, which indicates
     623             :  * that there was a non-benign sign extension, this means that we have a
     624             :  * collision between the correctly computed hash for this password and a set of
     625             :  * passwords that could be supplied to the buggy algorithm. Our safety measure
     626             :  * is meant to protect from such many-buggy to one-correct collisions, by
     627             :  * deviating from the correct algorithm in such cases. Let's check for this.
     628             :  */
     629         161 :         diff |= diff >> 16; /* still zero iff exact match */
     630         161 :         diff &= 0xffff; /* ditto */
     631         161 :         diff += 0xffff; /* bit 16 set iff "diff" was non-zero (on non-match) */
     632         161 :         sign <<= 9; /* move the non-benign sign extension flag to bit 16 */
     633         161 :         sign &= ~diff & safety; /* action needed? */
     634             : 
     635             : /*
     636             :  * If we have determined that we need to deviate from the correct algorithm,
     637             :  * flip bit 16 in initial expanded key. (The choice of 16 is arbitrary, but
     638             :  * let's stick to it now. It came out of the approach we used above, and it's
     639             :  * not any worse than any other choice we could make.)
     640             :  *
     641             :  * It is crucial that we don't do the same to the expanded key used in the main
     642             :  * Eksblowfish loop. By doing it to only one of these two, we deviate from a
     643             :  * state that could be directly specified by a password to the buggy algorithm
     644             :  * (and to the fully correct one as well, but that's a side-effect).
     645             :  */
     646         161 :         initial[0] ^= sign;
     647         161 : }
     648             : 
     649          84 : static char *BF_crypt(const char *key, const char *setting,
     650             :         char *output, int size,
     651             :         BF_word min)
     652             : {
     653             : #if BF_ASM
     654             :         extern void _BF_body_r(BF_ctx *ctx);
     655             : #endif
     656             :         static const unsigned char flags_by_subtype[26] =
     657             :                 {2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
     658             :                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 4, 0};
     659             :         struct {
     660             :                 BF_ctx ctx;
     661             :                 BF_key expanded_key;
     662             :                 union {
     663             :                         BF_word salt[4];
     664             :                         BF_word output[6];
     665             :                 } binary;
     666             :         } data;
     667             :         BF_word L, R;
     668             :         BF_word tmp1, tmp2, tmp3, tmp4;
     669             :         BF_word *ptr;
     670             :         BF_word count;
     671             :         int i;
     672             : 
     673          84 :         if (size < 7 + 22 + 31 + 1) {
     674           0 :                 __set_errno(ERANGE);
     675           0 :                 return NULL;
     676             :         }
     677             : 
     678        1008 :         if (setting[0] != '$' ||
     679          84 :             setting[1] != '2' ||
     680         168 :             setting[2] < 'a' || setting[2] > 'z' ||
     681          84 :             !flags_by_subtype[(unsigned int)(unsigned char)setting[2] - 'a'] ||
     682          84 :             setting[3] != '$' ||
     683         168 :             setting[4] < '0' || setting[4] > '3' ||
     684         168 :             setting[5] < '0' || setting[5] > '9' ||
     685          91 :             (setting[4] == '3' && setting[5] > '1') ||
     686          77 :             setting[6] != '$') {
     687           7 :                 __set_errno(EINVAL);
     688           7 :                 return NULL;
     689             :         }
     690             : 
     691          77 :         count = (BF_word)1 << ((setting[4] - '0') * 10 + (setting[5] - '0'));
     692          77 :         if (count < min || BF_decode(data.binary.salt, &setting[7], 16)) {
     693           0 :                 __set_errno(EINVAL);
     694           0 :                 return NULL;
     695             :         }
     696          77 :         BF_swap(data.binary.salt, 4);
     697             : 
     698          77 :         BF_set_key(key, data.expanded_key, data.ctx.P,
     699          77 :             flags_by_subtype[(unsigned int)(unsigned char)setting[2] - 'a']);
     700             : 
     701          77 :         memcpy(data.ctx.S, BF_init_state.S, sizeof(data.ctx.S));
     702             : 
     703          77 :         L = R = 0;
     704         770 :         for (i = 0; i < BF_N + 2; i += 2) {
     705         693 :                 L ^= data.binary.salt[i & 2];
     706         693 :                 R ^= data.binary.salt[(i & 2) + 1];
     707         693 :                 BF_ENCRYPT;
     708         693 :                 data.ctx.P[i] = L;
     709         693 :                 data.ctx.P[i + 1] = R;
     710             :         }
     711             : 
     712          77 :         ptr = data.ctx.S[0];
     713             :         do {
     714       19712 :                 ptr += 4;
     715       19712 :                 L ^= data.binary.salt[(BF_N + 2) & 3];
     716       19712 :                 R ^= data.binary.salt[(BF_N + 3) & 3];
     717       19712 :                 BF_ENCRYPT;
     718       19712 :                 *(ptr - 4) = L;
     719       19712 :                 *(ptr - 3) = R;
     720             : 
     721       19712 :                 L ^= data.binary.salt[(BF_N + 4) & 3];
     722       19712 :                 R ^= data.binary.salt[(BF_N + 5) & 3];
     723       19712 :                 BF_ENCRYPT;
     724       19712 :                 *(ptr - 2) = L;
     725       19712 :                 *(ptr - 1) = R;
     726       19712 :         } while (ptr < &data.ctx.S[3][0xFF]);
     727             : 
     728             :         do {
     729             :                 int done;
     730             : 
     731       56100 :                 for (i = 0; i < BF_N + 2; i += 2) {
     732       50490 :                         data.ctx.P[i] ^= data.expanded_key[i];
     733       50490 :                         data.ctx.P[i + 1] ^= data.expanded_key[i + 1];
     734             :                 }
     735             : 
     736        5610 :                 done = 0;
     737             :                 do {
     738       11220 :                         BF_body();
     739       11220 :                         if (done)
     740        5610 :                                 break;
     741        5610 :                         done = 1;
     742             : 
     743        5610 :                         tmp1 = data.binary.salt[0];
     744        5610 :                         tmp2 = data.binary.salt[1];
     745        5610 :                         tmp3 = data.binary.salt[2];
     746        5610 :                         tmp4 = data.binary.salt[3];
     747       28050 :                         for (i = 0; i < BF_N; i += 4) {
     748       22440 :                                 data.ctx.P[i] ^= tmp1;
     749       22440 :                                 data.ctx.P[i + 1] ^= tmp2;
     750       22440 :                                 data.ctx.P[i + 2] ^= tmp3;
     751       22440 :                                 data.ctx.P[i + 3] ^= tmp4;
     752             :                         }
     753        5610 :                         data.ctx.P[16] ^= tmp1;
     754        5610 :                         data.ctx.P[17] ^= tmp2;
     755        5610 :                 } while (1);
     756        5610 :         } while (--count);
     757             : 
     758         308 :         for (i = 0; i < 6; i += 2) {
     759         231 :                 L = BF_magic_w[i];
     760         231 :                 R = BF_magic_w[i + 1];
     761             : 
     762         231 :                 count = 64;
     763             :                 do {
     764       14784 :                         BF_ENCRYPT;
     765       14784 :                 } while (--count);
     766             : 
     767         231 :                 data.binary.output[i] = L;
     768         231 :                 data.binary.output[i + 1] = R;
     769             :         }
     770             : 
     771          77 :         memcpy(output, setting, 7 + 22 - 1);
     772         154 :         output[7 + 22 - 1] = BF_itoa64[(int)
     773          77 :                 BF_atoi64[(int)setting[7 + 22 - 1] - 0x20] & 0x30];
     774             : 
     775             : /* This has to be bug-compatible with the original implementation, so
     776             :  * only encode 23 of the 24 bytes. :-) */
     777          77 :         BF_swap(data.binary.output, 6);
     778          77 :         BF_encode(&output[7 + 22], data.binary.output, 23);
     779          77 :         output[7 + 22 + 31] = '\0';
     780             : 
     781          77 :         return output;
     782             : }
     783             : 
     784          42 : static int _crypt_output_magic(const char *setting, char *output, int size)
     785             : {
     786          42 :         if (size < 3)
     787           0 :                 return -1;
     788             : 
     789          42 :         output[0] = '*';
     790          42 :         output[1] = '0';
     791          42 :         output[2] = '\0';
     792             : 
     793          42 :         if (setting[0] == '*' && setting[1] == '0')
     794           0 :                 output[1] = '1';
     795             : 
     796          42 :         return 0;
     797             : }
     798             : 
     799             : /*
     800             :  * Please preserve the runtime self-test. It serves two purposes at once:
     801             :  *
     802             :  * 1. We really can't afford the risk of producing incompatible hashes e.g.
     803             :  * when there's something like gcc bug 26587 again, whereas an application or
     804             :  * library integrating this code might not also integrate our external tests or
     805             :  * it might not run them after every build. Even if it does, the miscompile
     806             :  * might only occur on the production build, but not on a testing build (such
     807             :  * as because of different optimization settings). It is painful to recover
     808             :  * from incorrectly-computed hashes - merely fixing whatever broke is not
     809             :  * enough. Thus, a proactive measure like this self-test is needed.
     810             :  *
     811             :  * 2. We don't want to leave sensitive data from our actual password hash
     812             :  * computation on the stack or in registers. Previous revisions of the code
     813             :  * would do explicit cleanups, but simply running the self-test after hash
     814             :  * computation is more reliable.
     815             :  *
     816             :  * The performance cost of this quick self-test is around 0.6% at the "$2a$08"
     817             :  * setting.
     818             :  */
     819          42 : char *php_crypt_blowfish_rn(const char *key, const char *setting,
     820             :         char *output, int size)
     821             : {
     822          42 :         const char *test_key = "8b \xd0\xc1\xd2\xcf\xcc\xd8";
     823          42 :         const char *test_setting = "$2a$00$abcdefghijklmnopqrstuu";
     824             :         static const char * const test_hash[2] =
     825             :                 {"VUrPmXD6q/nVSSp7pNDhCR9071IfIRe\0\x55", /* $2x$ */
     826             :                 "i1D709vfamulimlGcq0qq3UvuUasvEa\0\x55"}; /* $2a$, $2y$ */
     827             :         char *retval;
     828             :         const char *p;
     829             :         int save_errno, ok;
     830             :         struct {
     831             :                 char s[7 + 22 + 1];
     832             :                 char o[7 + 22 + 31 + 1 + 1 + 1];
     833             :         } buf;
     834             : 
     835             : /* Hash the supplied password */
     836          42 :         _crypt_output_magic(setting, output, size);
     837          42 :         retval = BF_crypt(key, setting, output, size, 16);
     838          42 :         save_errno = errno;
     839             : 
     840             : /*
     841             :  * Do a quick self-test. It is important that we make both calls to BF_crypt()
     842             :  * from the same scope such that they likely use the same stack locations,
     843             :  * which makes the second call overwrite the first call's sensitive data on the
     844             :  * stack and makes it more likely that any alignment related issues would be
     845             :  * detected by the self-test.
     846             :  */
     847          42 :         memcpy(buf.s, test_setting, sizeof(buf.s));
     848          42 :         if (retval)
     849          35 :                 buf.s[2] = setting[2];
     850          42 :         memset(buf.o, 0x55, sizeof(buf.o));
     851          42 :         buf.o[sizeof(buf.o) - 1] = 0;
     852          42 :         p = BF_crypt(test_key, buf.s, buf.o, sizeof(buf.o) - (1 + 1), 1);
     853             : 
     854         126 :         ok = (p == buf.o &&
     855          42 :             !memcmp(p, buf.s, 7 + 22) &&
     856          42 :             !memcmp(p + (7 + 22),
     857          42 :             test_hash[(unsigned int)(unsigned char)buf.s[2] & 1],
     858             :             31 + 1 + 1 + 1));
     859             : 
     860             :         {
     861          42 :                 const char *k = "\xff\xa3" "34" "\xff\xff\xff\xa3" "345";
     862             :                 BF_key ae, ai, ye, yi;
     863          42 :                 BF_set_key(k, ae, ai, 2); /* $2a$ */
     864          42 :                 BF_set_key(k, ye, yi, 4); /* $2y$ */
     865          42 :                 ai[0] ^= 0x10000; /* undo the safety (for comparison) */
     866         126 :                 ok = ok && ai[0] == 0xdb9c59bc && ye[17] == 0x33343500 &&
     867          42 :                     !memcmp(ae, ye, sizeof(ae)) &&
     868          42 :                     !memcmp(ai, yi, sizeof(ai));
     869             :         }
     870             : 
     871          42 :         __set_errno(save_errno);
     872          42 :         if (ok)
     873          42 :                 return retval;
     874             : 
     875             : /* Should not happen */
     876           0 :         _crypt_output_magic(setting, output, size);
     877           0 :         __set_errno(EINVAL); /* pretend we don't support this hash type */
     878           0 :         return NULL;
     879             : }
     880             : 
     881             : #if 0
     882             : char *_crypt_gensalt_blowfish_rn(const char *prefix, unsigned long count,
     883             :         const char *input, int size, char *output, int output_size)
     884             : {
     885             :         if (size < 16 || output_size < 7 + 22 + 1 ||
     886             :             (count && (count < 4 || count > 31)) ||
     887             :             prefix[0] != '$' || prefix[1] != '2' ||
     888             :             (prefix[2] != 'a' && prefix[2] != 'y')) {
     889             :                 if (output_size > 0) output[0] = '\0';
     890             :                 __set_errno((output_size < 7 + 22 + 1) ? ERANGE : EINVAL);
     891             :                 return NULL;
     892             :         }
     893             : 
     894             :         if (!count) count = 5;
     895             : 
     896             :         output[0] = '$';
     897             :         output[1] = '2';
     898             :         output[2] = prefix[2];
     899             :         output[3] = '$';
     900             :         output[4] = '0' + count / 10;
     901             :         output[5] = '0' + count % 10;
     902             :         output[6] = '$';
     903             : 
     904             :         BF_encode(&output[7], (const BF_word *)input, 16);
     905             :         output[7 + 22] = '\0';
     906             : 
     907             :         return output;
     908             : }
     909             : #endif

Generated by: LCOV version 1.10

Generated at Mon, 04 Aug 2014 15:49:14 +0000 (16 days ago)

Copyright © 2005-2014 The PHP Group
All rights reserved.