24 | * This password hashing system tries to thwart off-line password cracking using a 25 | * computationally-intensive hashing algorithm, based on Bruce Schneier's Blowfish cipher. 26 | * The work factor of the algorithm is parameterised, so it can be increased as computers 27 | * get faster. 28 | *
29 | * Usage is really simple. To hash a password for the first time, call the hashpw method 30 | * with a random salt, like this: 31 | *
32 | *
33 | * String pw_hash = BCrypt.hashpw(plain_password, BCrypt.gensalt());
35 | *
34 | *
36 | * To check whether a plaintext password matches one that has been hashed previously, use 37 | * the checkpw method: 38 | *
39 | *
40 | * if (BCrypt.checkpw(candidate_password, stored_hash))
45 | *
41 | * System.out.println("It matches");
42 | * else
43 | * System.out.println("It does not match");
44 | *
46 | * The gensalt() method takes an optional parameter (log_rounds) that determines the 47 | * computational complexity of the hashing: 48 | *
49 | *
50 | * String strong_salt = BCrypt.gensalt(10)
53 | *
51 | * String stronger_salt = BCrypt.gensalt(12)
52 | *
54 | * The amount of work increases exponentially (2**log_rounds), so each increment is twice
55 | * as much work. The default log_rounds is 10, and the valid range is 4 to 31.
56 | *
57 | * @author Damien Miller
58 | */
59 | public class BCrypt {
60 | // BCrypt parameters
61 |
62 | static final int MIN_LOG_ROUNDS = 4;
63 | static final int MAX_LOG_ROUNDS = 31;
64 | private static final int GENSALT_DEFAULT_LOG2_ROUNDS = 10;
65 | private static final int BCRYPT_SALT_LEN = 16;
66 | // Blowfish parameters
67 | private static final int BLOWFISH_NUM_ROUNDS = 16;
68 | // Initial contents of key schedule
69 | private static final int P_orig[] = {0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
70 | 0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89, 0x452821e6, 0x38d01377,
71 | 0xbe5466cf, 0x34e90c6c, 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
72 | 0x9216d5d9, 0x8979fb1b};
73 | private static final int S_orig[] = {0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
74 | 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99, 0x24a19947, 0xb3916cf7,
75 | 0x0801f2e2, 0x858efc16, 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
76 | 0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee, 0x7b54a41d, 0xc25a59b5,
77 | 0x9c30d539, 0x2af26013, 0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
78 | 0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e, 0xd71577c1, 0xbd314b27,
79 | 0x78af2fda, 0x55605c60, 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
80 | 0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce, 0xa15486af, 0x7c72e993,
81 | 0xb3ee1411, 0x636fbc2a, 0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
82 | 0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677, 0x3b8f4898, 0x6b4bb9af,
83 | 0xc4bfe81b, 0x66282193, 0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
84 | 0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88, 0x23893e81, 0xd396acc5,
85 | 0x0f6d6ff3, 0x83f44239, 0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
86 | 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0, 0x6a51a0d2, 0xd8542f68,
87 | 0x960fa728, 0xab5133a3, 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
88 | 0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88, 0x8cee8619, 0x456f9fb4,
89 | 0x7d84a5c3, 0x3b8b5ebe, 0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
90 | 0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d, 0x37d0d724, 0xd00a1248,
91 | 0xdb0fead3, 0x49f1c09b, 0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
92 | 0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba, 0xc1a94fb6, 0x409f60c4,
93 | 0x5e5c9ec2, 0x196a2463, 0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
94 | 0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09, 0xbee3d004, 0xde334afd,
95 | 0x660f2807, 0x192e4bb3, 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
96 | 0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279, 0x679f25fe, 0xfb1fa3cc,
97 | 0x8ea5e9f8, 0xdb3222f8, 0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
98 | 0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82, 0x9e5c57bb, 0xca6f8ca0,
99 | 0x1a87562e, 0xdf1769db, 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
100 | 0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0, 0x10fa3d98, 0xfd2183b8,
101 | 0x4afcb56c, 0x2dd1d35b, 0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
102 | 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8, 0xef20cada, 0x36774c01,
103 | 0xd07e9efe, 0x2bf11fb4, 0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
104 | 0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7, 0x8ff6e2fb, 0xf2122b64,
105 | 0x8888b812, 0x900df01c, 0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
106 | 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1, 0xe5a0cc0f, 0xb56f74e8,
107 | 0x18acf3d6, 0xce89e299, 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
108 | 0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477, 0xe6ad2065, 0x77b5fa86,
109 | 0xc75442f5, 0xfb9d35cf, 0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
110 | 0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af, 0x2464369b, 0xf009b91e,
111 | 0x5563911d, 0x59dfa6aa, 0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
112 | 0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41, 0xb3472dca, 0x7b14a94a,
113 | 0x1b510052, 0x9a532915, 0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
114 | 0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915, 0xb6636521, 0xe7b9f9b6,
115 | 0xff34052e, 0xc5855664, 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a,
116 | 0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 0xad6ea6b0, 0x49a7df7d,
117 | 0x9cee60b8, 0x8fedb266, 0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
118 | 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e, 0x3f54989a, 0x5b429d65,
119 | 0x6b8fe4d6, 0x99f73fd6, 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
120 | 0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, 0x09686b3f, 0x3ebaefc9,
121 | 0x3c971814, 0x6b6a70a1, 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
122 | 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8, 0xb03ada37, 0xf0500c0d,
123 | 0xf01c1f04, 0x0200b3ff, 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
124 | 0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701, 0x3ae5e581, 0x37c2dadc,
125 | 0xc8b57634, 0x9af3dda7, 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
126 | 0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331, 0x4e548b38, 0x4f6db908,
127 | 0x6f420d03, 0xf60a04bf, 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
128 | 0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 0x5512721f, 0x2e6b7124,
129 | 0x501adde6, 0x9f84cd87, 0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
130 | 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2, 0xef1c1847, 0x3215d908,
131 | 0xdd433b37, 0x24c2ba16, 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
132 | 0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, 0x043556f1, 0xd7a3c76b,
133 | 0x3c11183b, 0x5924a509, 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
134 | 0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3, 0x771fe71c, 0x4e3d06fa,
135 | 0x2965dcb9, 0x99e71d0f, 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
136 | 0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 0xf2f74ea7, 0x361d2b3d,
137 | 0x1939260f, 0x19c27960, 0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
138 | 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28, 0xc332ddef, 0xbe6c5aa5,
139 | 0x65582185, 0x68ab9802, 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
140 | 0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 0x13cca830, 0xeb61bd96,
141 | 0x0334fe1e, 0xaa0363cf, 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
142 | 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e, 0x648b1eaf, 0x19bdf0ca,
143 | 0xa02369b9, 0x655abb50, 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
144 | 0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8, 0xf837889a, 0x97e32d77,
145 | 0x11ed935f, 0x16681281, 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
146 | 0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696, 0xcdb30aeb, 0x532e3054,
147 | 0x8fd948e4, 0x6dbc3128, 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
148 | 0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 0x45eee2b6, 0xa3aaabea,
149 | 0xdb6c4f15, 0xfacb4fd0, 0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
150 | 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250, 0xcf62a1f2, 0x5b8d2646,
151 | 0xfc8883a0, 0xc1c7b6a3, 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
152 | 0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, 0x58428d2a, 0x0c55f5ea,
153 | 0x1dadf43e, 0x233f7061, 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
154 | 0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e, 0xa6078084, 0x19f8509e,
155 | 0xe8efd855, 0x61d99735, 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
156 | 0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, 0xdb73dbd3, 0x105588cd,
157 | 0x675fda79, 0xe3674340, 0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
158 | 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7, 0xe93d5a68, 0x948140f7,
159 | 0xf64c261c, 0x94692934, 0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
160 | 0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af, 0x1e39f62e, 0x97244546,
161 | 0x14214f74, 0xbf8b8840, 0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
162 | 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504, 0x96eb27b3, 0x55fd3941,
163 | 0xda2547e6, 0xabca0a9a, 0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
164 | 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee, 0x4f3ffea2, 0xe887ad8c,
165 | 0xb58ce006, 0x7af4d6b6, 0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42,
166 | 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b, 0x1dc9faf7, 0x4b6d1856,
167 | 0x26a36631, 0xeae397b2, 0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
168 | 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527, 0x55533a3a, 0x20838d87,
169 | 0xfe6ba9b7, 0xd096954b, 0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33,
170 | 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c, 0xfdf8e802, 0x04272f70,
171 | 0x80bb155c, 0x05282ce3, 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
172 | 0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17, 0x325f51eb, 0xd59bc0d1,
173 | 0xf2bcc18f, 0x41113564, 0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b,
174 | 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115, 0x6b2395e0, 0x333e92e1,
175 | 0x3b240b62, 0xeebeb922, 0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
176 | 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0, 0x5449a36f, 0x877d48fa,
177 | 0xc39dfd27, 0xf33e8d1e, 0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37,
178 | 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d, 0xc67b5510, 0x6d672c37,
179 | 0x2765d43b, 0xdcd0e804, 0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
180 | 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3, 0xbb132f88, 0x515bad24,
181 | 0x7b9479bf, 0x763bd6eb, 0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
182 | 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c, 0x6a124237, 0xb79251e7,
183 | 0x06a1bbe6, 0x4bfb6350, 0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
184 | 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a, 0x64af674e, 0xda86a85f,
185 | 0xbebfe988, 0x64e4c3fe, 0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d,
186 | 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc, 0x83426b33, 0xf01eab71,
187 | 0xb0804187, 0x3c005e5f, 0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
188 | 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2, 0x5366f9c3, 0xc8b38e74,
189 | 0xb475f255, 0x46fcd9b9, 0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2,
190 | 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c, 0xb90bace1, 0xbb8205d0,
191 | 0x11a86248, 0x7574a99e, 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
192 | 0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10, 0x1ab93d1d, 0x0ba5a4df,
193 | 0xa186f20f, 0x2868f169, 0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52,
194 | 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027, 0x9af88c27, 0x773f8641,
195 | 0xc3604c06, 0x61a806b5, 0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
196 | 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634, 0xbbcbee56, 0x90bcb6de,
197 | 0xebfc7da1, 0xce591d76, 0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24,
198 | 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc, 0xed545578, 0x08fca5b5,
199 | 0xd83d7cd3, 0x4dad0fc4, 0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
200 | 0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837, 0xd79a3234, 0x92638212,
201 | 0x670efa8e, 0x406000e0, 0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b,
202 | 0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe, 0xd5118e9d, 0xbf0f7315,
203 | 0xd62d1c7e, 0xc700c47b, 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
204 | 0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8, 0x530ff8ee, 0x468dde7d,
205 | 0xd5730a1d, 0x4cd04dc6, 0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304,
206 | 0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22, 0xc089c2b8, 0x43242ef6,
207 | 0xa51e03aa, 0x9cf2d0a4, 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
208 | 0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9, 0xc72fefd3, 0xf752f7da,
209 | 0x3f046f69, 0x77fa0a59, 0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593,
210 | 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51, 0x96d5ac3a, 0x017da67d,
211 | 0xd1cf3ed6, 0x7c7d2d28, 0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
212 | 0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc,
213 | 0xf8d56629, 0x79132e28, 0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c,
214 | 0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd, 0xc3eb9e15, 0x3c9057a2,
215 | 0x97271aec, 0xa93a072a, 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
216 | 0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb, 0x28517711, 0xc20ad9f8,
217 | 0xabcc5167, 0xccad925f, 0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
218 | 0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32, 0xa8b6e37e, 0xc3293d46,
219 | 0x48de5369, 0x6413e680, 0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
220 | 0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae, 0x5bbef7dd, 0x1b588d40,
221 | 0xccd2017f, 0x6bb4e3bb, 0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5,
222 | 0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47, 0xd29be463, 0x542f5d9e,
223 | 0xaec2771b, 0xf64e6370, 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
224 | 0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84, 0xe1b00428, 0x95983a1d,
225 | 0x06b89fb4, 0xce6ea048, 0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8,
226 | 0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd, 0xa08839e1, 0x51ce794b,
227 | 0x2f32c9b7, 0xa01fbac9, 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
228 | 0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38, 0x0339c32a, 0xc6913667,
229 | 0x8df9317c, 0xe0b12b4f, 0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c,
230 | 0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525, 0xfae59361, 0xceb69ceb,
231 | 0xc2a86459, 0x12baa8d1, 0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
232 | 0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df,
233 | 0xd3a0342b, 0x8971f21e, 0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8,
234 | 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d, 0xe54cda54, 0x1edad891,
235 | 0xce6279cf, 0xcd3e7e6f, 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
236 | 0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02, 0xacf08162, 0x5a75ebb5,
237 | 0x6e163697, 0x88d273cc, 0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
238 | 0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a, 0xc9aa53fd, 0x62a80f00,
239 | 0xbb25bfe2, 0x35bdd2f6, 0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
240 | 0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0, 0xba38209c, 0xf746ce76,
241 | 0x77afa1c5, 0x20756060, 0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e,
242 | 0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9, 0x90d4f869, 0xa65cdea0,
243 | 0x3f09252d, 0xc208e69f, 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6};
244 | // bcrypt IV: "OrpheanBeholderScryDoubt"
245 | static private final int bf_crypt_ciphertext[] = {0x4f727068, 0x65616e42,
246 | 0x65686f6c, 0x64657253, 0x63727944, 0x6f756274};
247 | // Table for Base64 encoding
248 | static private final char base64_code[] = {'.', '/', 'A', 'B', 'C', 'D', 'E', 'F',
249 | 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U',
250 | 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j',
251 | 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y',
252 | 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};
253 | // Table for Base64 decoding
254 | static private final byte index_64[] = {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
255 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
256 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 54, 55,
257 | 56, 57, 58, 59, 60, 61, 62, 63, -1, -1, -1, -1, -1, -1, -1, 2, 3, 4, 5, 6, 7,
258 | 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
259 | -1, -1, -1, -1, -1, -1, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
260 | 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, -1, -1, -1, -1, -1};
261 | // Expanded Blowfish key
262 | private int P[];
263 | private int S[];
264 |
265 | /**
266 | * Encode a byte array using bcrypt's slightly-modified base64 encoding scheme. Note
267 | * that this is not compatible with the standard MIME-base64
268 | * encoding.
269 | *
270 | * @param d the byte array to encode
271 | * @param len the number of bytes to encode
272 | * @param rs the destination buffer for the base64-encoded string
273 | * @throws IllegalArgumentException if the length is invalid
274 | */
275 | static void encode_base64(byte d[], int len, StringBuilder rs)
276 | throws IllegalArgumentException {
277 | int off = 0;
278 | int c1, c2;
279 |
280 | if (len <= 0 || len > d.length) {
281 | throw new IllegalArgumentException("Invalid len");
282 | }
283 |
284 | while (off < len) {
285 | c1 = d[off++] & 0xff;
286 | rs.append(base64_code[(c1 >> 2) & 0x3f]);
287 | c1 = (c1 & 0x03) << 4;
288 | if (off >= len) {
289 | rs.append(base64_code[c1 & 0x3f]);
290 | break;
291 | }
292 | c2 = d[off++] & 0xff;
293 | c1 |= (c2 >> 4) & 0x0f;
294 | rs.append(base64_code[c1 & 0x3f]);
295 | c1 = (c2 & 0x0f) << 2;
296 | if (off >= len) {
297 | rs.append(base64_code[c1 & 0x3f]);
298 | break;
299 | }
300 | c2 = d[off++] & 0xff;
301 | c1 |= (c2 >> 6) & 0x03;
302 | rs.append(base64_code[c1 & 0x3f]);
303 | rs.append(base64_code[c2 & 0x3f]);
304 | }
305 | }
306 |
307 | /**
308 | * Look up the 3 bits base64-encoded by the specified character, range-checking
309 | * against conversion table
310 | *
311 | * @param x the base64-encoded value
312 | * @return the decoded value of x
313 | */
314 | private static byte char64(char x) {
315 | if (x > index_64.length) {
316 | return -1;
317 | }
318 | return index_64[x];
319 | }
320 |
321 | /**
322 | * Decode a string encoded using bcrypt's base64 scheme to a byte array. Note that
323 | * this is *not* compatible with the standard MIME-base64 encoding.
324 | *
325 | * @param s the string to decode
326 | * @param maxolen the maximum number of bytes to decode
327 | * @return an array containing the decoded bytes
328 | * @throws IllegalArgumentException if maxolen is invalid
329 | */
330 | static byte[] decode_base64(String s, int maxolen) throws IllegalArgumentException {
331 | ByteArrayOutputStream out = new ByteArrayOutputStream(maxolen);
332 | int off = 0, slen = s.length(), olen = 0;
333 | byte c1, c2, c3, c4, o;
334 |
335 | if (maxolen <= 0) {
336 | throw new IllegalArgumentException("Invalid maxolen");
337 | }
338 |
339 | while (off < slen - 1 && olen < maxolen) {
340 | c1 = char64(s.charAt(off++));
341 | c2 = char64(s.charAt(off++));
342 | if (c1 == -1 || c2 == -1) {
343 | break;
344 | }
345 | o = (byte) (c1 << 2);
346 | o |= (c2 & 0x30) >> 4;
347 | out.write(o);
348 | if (++olen >= maxolen || off >= slen) {
349 | break;
350 | }
351 | c3 = char64(s.charAt(off++));
352 | if (c3 == -1) {
353 | break;
354 | }
355 | o = (byte) ((c2 & 0x0f) << 4);
356 | o |= (c3 & 0x3c) >> 2;
357 | out.write(o);
358 | if (++olen >= maxolen || off >= slen) {
359 | break;
360 | }
361 | c4 = char64(s.charAt(off++));
362 | o = (byte) ((c3 & 0x03) << 6);
363 | o |= c4;
364 | out.write(o);
365 | ++olen;
366 | }
367 |
368 | return out.toByteArray();
369 | }
370 |
371 | /**
372 | * Cycically extract a word of key material
373 | *
374 | * @param data the string to extract the data from
375 | * @param offp a "pointer" (as a one-entry array) to the current offset into data
376 | * @return the next word of material from data
377 | */
378 | private static int streamtoword(byte data[], int offp[]) {
379 | int i;
380 | int word = 0;
381 | int off = offp[0];
382 |
383 | for (i = 0; i < 4; i++) {
384 | word = (word << 8) | (data[off] & 0xff);
385 | off = (off + 1) % data.length;
386 | }
387 |
388 | offp[0] = off;
389 | return word;
390 | }
391 |
392 | static long roundsForLogRounds(int log_rounds) {
393 | if (log_rounds < 4 || log_rounds > 31) {
394 | throw new IllegalArgumentException("Bad number of rounds");
395 | }
396 | return 1L << log_rounds;
397 | }
398 |
399 | /**
400 | * Hash a password using the OpenBSD bcrypt scheme
401 | *
402 | * @param password the password to hash
403 | * @param salt the salt to hash with (perhaps generated using BCrypt.gensalt)
404 | * @return the hashed password
405 | * @throws IllegalArgumentException if invalid salt is passed
406 | */
407 | public static String hashpw(String password, String salt) throws IllegalArgumentException {
408 | BCrypt B;
409 | String real_salt;
410 | byte passwordb[], saltb[], hashed[];
411 | char minor = (char) 0;
412 | int rounds, off = 0;
413 | StringBuilder rs = new StringBuilder();
414 |
415 | if (salt == null) {
416 | throw new IllegalArgumentException("salt cannot be null");
417 | }
418 |
419 | int saltLength = salt.length();
420 |
421 | if (saltLength < 28) {
422 | throw new IllegalArgumentException("Invalid salt");
423 | }
424 |
425 | if (salt.charAt(0) != '$' || salt.charAt(1) != '2') {
426 | throw new IllegalArgumentException("Invalid salt version");
427 | }
428 | if (salt.charAt(2) == '$') {
429 | off = 3;
430 | } else {
431 | minor = salt.charAt(2);
432 | if (minor != 'a' || salt.charAt(3) != '$') {
433 | throw new IllegalArgumentException("Invalid salt revision");
434 | }
435 | off = 4;
436 | }
437 |
438 | if (saltLength - off < 25) {
439 | throw new IllegalArgumentException("Invalid salt");
440 | }
441 |
442 | // Extract number of rounds
443 | if (salt.charAt(off + 2) > '$') {
444 | throw new IllegalArgumentException("Missing salt rounds");
445 | }
446 | rounds = Integer.parseInt(salt.substring(off, off + 2));
447 |
448 | real_salt = salt.substring(off + 3, off + 25);
449 | try {
450 | passwordb = (password + (minor >= 'a' ? "\000" : "")).getBytes("UTF-8");
451 | } catch (UnsupportedEncodingException uee) {
452 | throw new AssertionError("UTF-8 is not supported");
453 | }
454 |
455 | saltb = decode_base64(real_salt, BCRYPT_SALT_LEN);
456 |
457 | B = new BCrypt();
458 | hashed = B.crypt_raw(passwordb, saltb, rounds);
459 |
460 | rs.append("$2");
461 | if (minor >= 'a') {
462 | rs.append(minor);
463 | }
464 | rs.append("$");
465 | if (rounds < 10) {
466 | rs.append("0");
467 | }
468 | rs.append(rounds);
469 | rs.append("$");
470 | encode_base64(saltb, saltb.length, rs);
471 | encode_base64(hashed, bf_crypt_ciphertext.length * 4 - 1, rs);
472 | return rs.toString();
473 | }
474 |
475 | /**
476 | * Generate a salt for use with the BCrypt.hashpw() method
477 | *
478 | * @param log_rounds the log2 of the number of rounds of hashing to apply - the work
479 | * factor therefore increases as 2**log_rounds. Minimum 4, maximum 31.
480 | * @param random an instance of SecureRandom to use
481 | * @return an encoded salt value
482 | */
483 | public static String gensalt(int log_rounds, SecureRandom random) {
484 | if (log_rounds < MIN_LOG_ROUNDS || log_rounds > MAX_LOG_ROUNDS) {
485 | throw new IllegalArgumentException("Bad number of rounds");
486 | }
487 | StringBuilder rs = new StringBuilder();
488 | byte rnd[] = new byte[BCRYPT_SALT_LEN];
489 |
490 | random.nextBytes(rnd);
491 |
492 | rs.append("$2a$");
493 | if (log_rounds < 10) {
494 | rs.append("0");
495 | }
496 | rs.append(log_rounds);
497 | rs.append("$");
498 | encode_base64(rnd, rnd.length, rs);
499 | return rs.toString();
500 | }
501 |
502 | /**
503 | * Generate a salt for use with the BCrypt.hashpw() method
504 | *
505 | * @param log_rounds the log2 of the number of rounds of hashing to apply - the work
506 | * factor therefore increases as 2**log_rounds. Minimum 4, maximum 31.
507 | * @return an encoded salt value
508 | */
509 | public static String gensalt(int log_rounds) {
510 | return gensalt(log_rounds, new SecureRandom());
511 | }
512 |
513 | /**
514 | * Generate a salt for use with the BCrypt.hashpw() method, selecting a reasonable
515 | * default for the number of hashing rounds to apply
516 | *
517 | * @return an encoded salt value
518 | */
519 | public static String gensalt() {
520 | return gensalt(GENSALT_DEFAULT_LOG2_ROUNDS);
521 | }
522 |
523 | /**
524 | * Check that a plaintext password matches a previously hashed one
525 | *
526 | * @param plaintext the plaintext password to verify
527 | * @param hashed the previously-hashed password
528 | * @return true if the passwords match, false otherwise
529 | */
530 | public static boolean checkpw(String plaintext, String hashed) {
531 | return equalsNoEarlyReturn(hashed, hashpw(plaintext, hashed));
532 | }
533 |
534 | static boolean equalsNoEarlyReturn(String a, String b) {
535 | char[] caa = a.toCharArray();
536 | char[] cab = b.toCharArray();
537 |
538 | if (caa.length != cab.length) {
539 | return false;
540 | }
541 |
542 | byte ret = 0;
543 | for (int i = 0; i < caa.length; i++) {
544 | ret |= caa[i] ^ cab[i];
545 | }
546 | return ret == 0;
547 | }
548 |
549 | /**
550 | * Blowfish encipher a single 64-bit block encoded as two 32-bit halves
551 | *
552 | * @param lr an array containing the two 32-bit half blocks
553 | * @param off the position in the array of the blocks
554 | */
555 | private final void encipher(int lr[], int off) {
556 | int i, n, l = lr[off], r = lr[off + 1];
557 |
558 | l ^= P[0];
559 | for (i = 0; i <= BLOWFISH_NUM_ROUNDS - 2; ) {
560 | // Feistel substitution on left word
561 | n = S[(l >> 24) & 0xff];
562 | n += S[0x100 | ((l >> 16) & 0xff)];
563 | n ^= S[0x200 | ((l >> 8) & 0xff)];
564 | n += S[0x300 | (l & 0xff)];
565 | r ^= n ^ P[++i];
566 |
567 | // Feistel substitution on right word
568 | n = S[(r >> 24) & 0xff];
569 | n += S[0x100 | ((r >> 16) & 0xff)];
570 | n ^= S[0x200 | ((r >> 8) & 0xff)];
571 | n += S[0x300 | (r & 0xff)];
572 | l ^= n ^ P[++i];
573 | }
574 | lr[off] = r ^ P[BLOWFISH_NUM_ROUNDS + 1];
575 | lr[off + 1] = l;
576 | }
577 |
578 | /**
579 | * Initialise the Blowfish key schedule
580 | */
581 | private void init_key() {
582 | P = (int[]) P_orig.clone();
583 | S = (int[]) S_orig.clone();
584 | }
585 |
586 | /**
587 | * Key the Blowfish cipher
588 | *
589 | * @param key an array containing the key
590 | */
591 | private void key(byte key[]) {
592 | int i;
593 | int koffp[] = {0};
594 | int lr[] = {0, 0};
595 | int plen = P.length, slen = S.length;
596 |
597 | for (i = 0; i < plen; i++) {
598 | P[i] = P[i] ^ streamtoword(key, koffp);
599 | }
600 |
601 | for (i = 0; i < plen; i += 2) {
602 | encipher(lr, 0);
603 | P[i] = lr[0];
604 | P[i + 1] = lr[1];
605 | }
606 |
607 | for (i = 0; i < slen; i += 2) {
608 | encipher(lr, 0);
609 | S[i] = lr[0];
610 | S[i + 1] = lr[1];
611 | }
612 | }
613 |
614 | /**
615 | * Perform the "enhanced key schedule" step described by Provos and Mazieres in
616 | * "A Future-Adaptable Password Scheme" https://www.openbsd.org/papers/bcrypt-paper.ps
617 | *
618 | * @param data salt information
619 | * @param key password information
620 | */
621 | private void ekskey(byte data[], byte key[]) {
622 | int i;
623 | int koffp[] = {0}, doffp[] = {0};
624 | int lr[] = {0, 0};
625 | int plen = P.length, slen = S.length;
626 |
627 | for (i = 0; i < plen; i++) {
628 | P[i] = P[i] ^ streamtoword(key, koffp);
629 | }
630 |
631 | for (i = 0; i < plen; i += 2) {
632 | lr[0] ^= streamtoword(data, doffp);
633 | lr[1] ^= streamtoword(data, doffp);
634 | encipher(lr, 0);
635 | P[i] = lr[0];
636 | P[i + 1] = lr[1];
637 | }
638 |
639 | for (i = 0; i < slen; i += 2) {
640 | lr[0] ^= streamtoword(data, doffp);
641 | lr[1] ^= streamtoword(data, doffp);
642 | encipher(lr, 0);
643 | S[i] = lr[0];
644 | S[i + 1] = lr[1];
645 | }
646 | }
647 |
648 | /**
649 | * Perform the central password hashing step in the bcrypt scheme
650 | *
651 | * @param password the password to hash
652 | * @param salt the binary salt to hash with the password
653 | * @param log_rounds the binary logarithm of the number of rounds of hashing to apply
654 | * @return an array containing the binary hashed password
655 | */
656 | private byte[] crypt_raw(byte password[], byte salt[], int log_rounds) {
657 | int cdata[] = (int[]) bf_crypt_ciphertext.clone();
658 | int clen = cdata.length;
659 | byte ret[];
660 |
661 | long rounds = roundsForLogRounds(log_rounds);
662 |
663 | init_key();
664 | ekskey(salt, password);
665 | for (long i = 0; i < rounds; i++) {
666 | key(password);
667 | key(salt);
668 | }
669 |
670 | for (int i = 0; i < 64; i++) {
671 | for (int j = 0; j < (clen >> 1); j++) {
672 | encipher(cdata, j << 1);
673 | }
674 | }
675 |
676 | ret = new byte[clen * 4];
677 | for (int i = 0, j = 0; i < clen; i++) {
678 | ret[j++] = (byte) ((cdata[i] >> 24) & 0xff);
679 | ret[j++] = (byte) ((cdata[i] >> 16) & 0xff);
680 | ret[j++] = (byte) ((cdata[i] >> 8) & 0xff);
681 | ret[j++] = (byte) (cdata[i] & 0xff);
682 | }
683 | return ret;
684 | }
685 | }
686 |
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/template-main/src/main/java/com/step/template/main/util/CommonUtil.java:
--------------------------------------------------------------------------------
1 | package com.step.template.main.util;
2 |
3 |
4 | import com.step.template.main.vo.TreeNode;
5 |
6 | import java.util.ArrayList;
7 | import java.util.List;
8 |
9 | public class CommonUtil {
10 |
11 | public static List