|
1 |
| -/* |
2 |
| -***** |
3 |
| -sha1.hpp is a repackaging of the sha1.cpp and sha1.h files from the smallsha1 |
4 |
| -library (http://code.google.com/p/smallsha1/) into a single header suitable for |
5 |
| -use as a header only library. This conversion was done by Peter Thorson |
6 |
| -([email protected]) in 2013. All modifications to the code are redistributed |
7 |
| -under the same license as the original, which is listed below. |
8 |
| -***** |
9 |
| -
|
10 |
| - Copyright (c) 2011, Micael Hildenborg |
11 |
| - All rights reserved. |
12 |
| -
|
13 |
| - Redistribution and use in source and binary forms, with or without |
14 |
| - modification, are permitted provided that the following conditions are met: |
15 |
| - * Redistributions of source code must retain the above copyright |
16 |
| - notice, this list of conditions and the following disclaimer. |
17 |
| - * Redistributions in binary form must reproduce the above copyright |
18 |
| - notice, this list of conditions and the following disclaimer in the |
19 |
| - documentation and/or other materials provided with the distribution. |
20 |
| - * Neither the name of Micael Hildenborg nor the |
21 |
| - names of its contributors may be used to endorse or promote products |
22 |
| - derived from this software without specific prior written permission. |
23 |
| -
|
24 |
| - THIS SOFTWARE IS PROVIDED BY Micael Hildenborg ''AS IS'' AND ANY |
25 |
| - EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
26 |
| - WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
27 |
| - DISCLAIMED. IN NO EVENT SHALL Micael Hildenborg BE LIABLE FOR ANY |
28 |
| - DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
29 |
| - (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
30 |
| - LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
31 |
| - ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
32 |
| - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
33 |
| - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
34 |
| - */ |
35 |
| - |
36 |
| -#ifndef SHA1_DEFINED |
37 |
| -#define SHA1_DEFINED |
38 |
| - |
39 |
| -namespace websocketpp { |
40 |
| -namespace sha1 { |
41 |
| - |
42 |
| -namespace { // local |
43 |
| - |
44 |
| -// Rotate an integer value to left. |
45 |
| -inline unsigned int rol(unsigned int value, unsigned int steps) { |
46 |
| - return ((value << steps) | (value >> (32 - steps))); |
47 |
| -} |
48 |
| - |
49 |
| -// Sets the first 16 integers in the buffert to zero. |
50 |
| -// Used for clearing the W buffert. |
51 |
| -inline void clearWBuffert(unsigned int * buffert) |
52 |
| -{ |
53 |
| - for (int pos = 16; --pos >= 0;) |
54 |
| - { |
55 |
| - buffert[pos] = 0; |
56 |
| - } |
57 |
| -} |
58 |
| - |
59 |
| -inline void innerHash(unsigned int * result, unsigned int * w) |
60 |
| -{ |
61 |
| - unsigned int a = result[0]; |
62 |
| - unsigned int b = result[1]; |
63 |
| - unsigned int c = result[2]; |
64 |
| - unsigned int d = result[3]; |
65 |
| - unsigned int e = result[4]; |
66 |
| - |
67 |
| - int round = 0; |
68 |
| - |
69 |
| - #define sha1macro(func,val) \ |
70 |
| - { \ |
71 |
| - const unsigned int t = rol(a, 5) + (func) + e + val + w[round]; \ |
72 |
| - e = d; \ |
73 |
| - d = c; \ |
74 |
| - c = rol(b, 30); \ |
75 |
| - b = a; \ |
76 |
| - a = t; \ |
77 |
| - } |
78 |
| - |
79 |
| - while (round < 16) |
80 |
| - { |
81 |
| - sha1macro((b & c) | (~b & d), 0x5a827999) |
82 |
| - ++round; |
83 |
| - } |
84 |
| - while (round < 20) |
85 |
| - { |
86 |
| - w[round] = rol((w[round - 3] ^ w[round - 8] ^ w[round - 14] ^ w[round - 16]), 1); |
87 |
| - sha1macro((b & c) | (~b & d), 0x5a827999) |
88 |
| - ++round; |
89 |
| - } |
90 |
| - while (round < 40) |
91 |
| - { |
92 |
| - w[round] = rol((w[round - 3] ^ w[round - 8] ^ w[round - 14] ^ w[round - 16]), 1); |
93 |
| - sha1macro(b ^ c ^ d, 0x6ed9eba1) |
94 |
| - ++round; |
95 |
| - } |
96 |
| - while (round < 60) |
97 |
| - { |
98 |
| - w[round] = rol((w[round - 3] ^ w[round - 8] ^ w[round - 14] ^ w[round - 16]), 1); |
99 |
| - sha1macro((b & c) | (b & d) | (c & d), 0x8f1bbcdc) |
100 |
| - ++round; |
101 |
| - } |
102 |
| - while (round < 80) |
103 |
| - { |
104 |
| - w[round] = rol((w[round - 3] ^ w[round - 8] ^ w[round - 14] ^ w[round - 16]), 1); |
105 |
| - sha1macro(b ^ c ^ d, 0xca62c1d6) |
106 |
| - ++round; |
107 |
| - } |
108 |
| - |
109 |
| - #undef sha1macro |
110 |
| - |
111 |
| - result[0] += a; |
112 |
| - result[1] += b; |
113 |
| - result[2] += c; |
114 |
| - result[3] += d; |
115 |
| - result[4] += e; |
116 |
| -} |
117 |
| - |
118 |
| -} // namespace |
119 |
| - |
120 |
| -/// Calculate a SHA1 hash |
121 |
| -/** |
122 |
| - * @param src points to any kind of data to be hashed. |
123 |
| - * @param bytelength the number of bytes to hash from the src pointer. |
124 |
| - * @param hash should point to a buffer of at least 20 bytes of size for storing |
125 |
| - * the sha1 result in. |
126 |
| - */ |
127 |
| -inline void calc(void const * src, size_t bytelength, unsigned char * hash) { |
128 |
| - // Init the result array. |
129 |
| - unsigned int result[5] = { 0x67452301, 0xefcdab89, 0x98badcfe, |
130 |
| - 0x10325476, 0xc3d2e1f0 }; |
131 |
| - |
132 |
| - // Cast the void src pointer to be the byte array we can work with. |
133 |
| - unsigned char const * sarray = (unsigned char const *) src; |
134 |
| - |
135 |
| - // The reusable round buffer |
136 |
| - unsigned int w[80]; |
137 |
| - |
138 |
| - // Loop through all complete 64byte blocks. |
139 |
| - |
140 |
| - size_t endCurrentBlock; |
141 |
| - size_t currentBlock = 0; |
142 |
| - |
143 |
| - if (bytelength >= 64) { |
144 |
| - size_t const endOfFullBlocks = bytelength - 64; |
145 |
| - |
146 |
| - while (currentBlock <= endOfFullBlocks) { |
147 |
| - endCurrentBlock = currentBlock + 64; |
148 |
| - |
149 |
| - // Init the round buffer with the 64 byte block data. |
150 |
| - for (int roundPos = 0; currentBlock < endCurrentBlock; currentBlock += 4) |
151 |
| - { |
152 |
| - // This line will swap endian on big endian and keep endian on |
153 |
| - // little endian. |
154 |
| - w[roundPos++] = (unsigned int) sarray[currentBlock + 3] |
155 |
| - | (((unsigned int) sarray[currentBlock + 2]) << 8) |
156 |
| - | (((unsigned int) sarray[currentBlock + 1]) << 16) |
157 |
| - | (((unsigned int) sarray[currentBlock]) << 24); |
158 |
| - } |
159 |
| - innerHash(result, w); |
160 |
| - } |
161 |
| - } |
162 |
| - |
163 |
| - // Handle the last and not full 64 byte block if existing. |
164 |
| - endCurrentBlock = bytelength - currentBlock; |
165 |
| - clearWBuffert(w); |
166 |
| - size_t lastBlockBytes = 0; |
167 |
| - for (;lastBlockBytes < endCurrentBlock; ++lastBlockBytes) { |
168 |
| - w[lastBlockBytes >> 2] |= (unsigned int) sarray[lastBlockBytes + currentBlock] << ((3 - (lastBlockBytes & 3)) << 3); |
169 |
| - } |
170 |
| - |
171 |
| - w[lastBlockBytes >> 2] |= 0x80 << ((3 - (lastBlockBytes & 3)) << 3); |
172 |
| - if (endCurrentBlock >= 56) { |
173 |
| - innerHash(result, w); |
174 |
| - clearWBuffert(w); |
175 |
| - } |
176 |
| - w[15] = bytelength << 3; |
177 |
| - innerHash(result, w); |
178 |
| - |
179 |
| - // Store hash in result pointer, and make sure we get in in the correct |
180 |
| - // order on both endian models. |
181 |
| - for (int hashByte = 20; --hashByte >= 0;) { |
182 |
| - hash[hashByte] = (result[hashByte >> 2] >> (((3 - hashByte) & 0x3) << 3)) & 0xff; |
183 |
| - } |
184 |
| -} |
185 |
| - |
186 |
| -} // namespace sha1 |
187 |
| -} // namespace websocketpp |
188 |
| - |
189 |
| -#endif // SHA1_DEFINED |
| 1 | +/* |
| 2 | +***** |
| 3 | +sha1.hpp is a repackaging of the sha1.cpp and sha1.h files from the smallsha1 |
| 4 | +library (http://code.google.com/p/smallsha1/) into a single header suitable for |
| 5 | +use as a header only library. This conversion was done by Peter Thorson |
| 6 | +([email protected]) in 2013. All modifications to the code are redistributed |
| 7 | +under the same license as the original, which is listed below. |
| 8 | +***** |
| 9 | +
|
| 10 | + Copyright (c) 2011, Micael Hildenborg |
| 11 | + All rights reserved. |
| 12 | +
|
| 13 | + Redistribution and use in source and binary forms, with or without |
| 14 | + modification, are permitted provided that the following conditions are met: |
| 15 | + * Redistributions of source code must retain the above copyright |
| 16 | + notice, this list of conditions and the following disclaimer. |
| 17 | + * Redistributions in binary form must reproduce the above copyright |
| 18 | + notice, this list of conditions and the following disclaimer in the |
| 19 | + documentation and/or other materials provided with the distribution. |
| 20 | + * Neither the name of Micael Hildenborg nor the |
| 21 | + names of its contributors may be used to endorse or promote products |
| 22 | + derived from this software without specific prior written permission. |
| 23 | +
|
| 24 | + THIS SOFTWARE IS PROVIDED BY Micael Hildenborg ''AS IS'' AND ANY |
| 25 | + EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 26 | + WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 27 | + DISCLAIMED. IN NO EVENT SHALL Micael Hildenborg BE LIABLE FOR ANY |
| 28 | + DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 29 | + (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 30 | + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 31 | + ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 32 | + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 33 | + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 34 | + */ |
| 35 | + |
| 36 | +#ifndef SHA1_DEFINED |
| 37 | +#define SHA1_DEFINED |
| 38 | + |
| 39 | +namespace websocketpp { |
| 40 | +namespace sha1 { |
| 41 | + |
| 42 | +namespace { // local |
| 43 | + |
| 44 | +// Rotate an integer value to left. |
| 45 | +inline unsigned int rol(unsigned int value, unsigned int steps) { |
| 46 | + return ((value << steps) | (value >> (32 - steps))); |
| 47 | +} |
| 48 | + |
| 49 | +// Sets the first 16 integers in the buffert to zero. |
| 50 | +// Used for clearing the W buffert. |
| 51 | +inline void clearWBuffert(unsigned int * buffert) |
| 52 | +{ |
| 53 | + for (int pos = 16; --pos >= 0;) |
| 54 | + { |
| 55 | + buffert[pos] = 0; |
| 56 | + } |
| 57 | +} |
| 58 | + |
| 59 | +inline void innerHash(unsigned int * result, unsigned int * w) |
| 60 | +{ |
| 61 | + unsigned int a = result[0]; |
| 62 | + unsigned int b = result[1]; |
| 63 | + unsigned int c = result[2]; |
| 64 | + unsigned int d = result[3]; |
| 65 | + unsigned int e = result[4]; |
| 66 | + |
| 67 | + int round = 0; |
| 68 | + |
| 69 | + #define sha1macro(func,val) \ |
| 70 | + { \ |
| 71 | + const unsigned int t = rol(a, 5) + (func) + e + val + w[round]; \ |
| 72 | + e = d; \ |
| 73 | + d = c; \ |
| 74 | + c = rol(b, 30); \ |
| 75 | + b = a; \ |
| 76 | + a = t; \ |
| 77 | + } |
| 78 | + |
| 79 | + while (round < 16) |
| 80 | + { |
| 81 | + sha1macro((b & c) | (~b & d), 0x5a827999) |
| 82 | + ++round; |
| 83 | + } |
| 84 | + while (round < 20) |
| 85 | + { |
| 86 | + w[round] = rol((w[round - 3] ^ w[round - 8] ^ w[round - 14] ^ w[round - 16]), 1); |
| 87 | + sha1macro((b & c) | (~b & d), 0x5a827999) |
| 88 | + ++round; |
| 89 | + } |
| 90 | + while (round < 40) |
| 91 | + { |
| 92 | + w[round] = rol((w[round - 3] ^ w[round - 8] ^ w[round - 14] ^ w[round - 16]), 1); |
| 93 | + sha1macro(b ^ c ^ d, 0x6ed9eba1) |
| 94 | + ++round; |
| 95 | + } |
| 96 | + while (round < 60) |
| 97 | + { |
| 98 | + w[round] = rol((w[round - 3] ^ w[round - 8] ^ w[round - 14] ^ w[round - 16]), 1); |
| 99 | + sha1macro((b & c) | (b & d) | (c & d), 0x8f1bbcdc) |
| 100 | + ++round; |
| 101 | + } |
| 102 | + while (round < 80) |
| 103 | + { |
| 104 | + w[round] = rol((w[round - 3] ^ w[round - 8] ^ w[round - 14] ^ w[round - 16]), 1); |
| 105 | + sha1macro(b ^ c ^ d, 0xca62c1d6) |
| 106 | + ++round; |
| 107 | + } |
| 108 | + |
| 109 | + #undef sha1macro |
| 110 | + |
| 111 | + result[0] += a; |
| 112 | + result[1] += b; |
| 113 | + result[2] += c; |
| 114 | + result[3] += d; |
| 115 | + result[4] += e; |
| 116 | +} |
| 117 | + |
| 118 | +} // namespace |
| 119 | + |
| 120 | +/// Calculate a SHA1 hash |
| 121 | +/** |
| 122 | + * @param src points to any kind of data to be hashed. |
| 123 | + * @param bytelength the number of bytes to hash from the src pointer. |
| 124 | + * @param hash should point to a buffer of at least 20 bytes of size for storing |
| 125 | + * the sha1 result in. |
| 126 | + */ |
| 127 | +inline void calc(void const * src, size_t bytelength, unsigned char * hash) { |
| 128 | + // Init the result array. |
| 129 | + unsigned int result[5] = { 0x67452301, 0xefcdab89, 0x98badcfe, |
| 130 | + 0x10325476, 0xc3d2e1f0 }; |
| 131 | + |
| 132 | + // Cast the void src pointer to be the byte array we can work with. |
| 133 | + unsigned char const * sarray = (unsigned char const *) src; |
| 134 | + |
| 135 | + // The reusable round buffer |
| 136 | + unsigned int w[80]; |
| 137 | + |
| 138 | + // Loop through all complete 64byte blocks. |
| 139 | + |
| 140 | + size_t endCurrentBlock; |
| 141 | + size_t currentBlock = 0; |
| 142 | + |
| 143 | + if (bytelength >= 64) { |
| 144 | + size_t const endOfFullBlocks = bytelength - 64; |
| 145 | + |
| 146 | + while (currentBlock <= endOfFullBlocks) { |
| 147 | + endCurrentBlock = currentBlock + 64; |
| 148 | + |
| 149 | + // Init the round buffer with the 64 byte block data. |
| 150 | + for (int roundPos = 0; currentBlock < endCurrentBlock; currentBlock += 4) |
| 151 | + { |
| 152 | + // This line will swap endian on big endian and keep endian on |
| 153 | + // little endian. |
| 154 | + w[roundPos++] = (unsigned int) sarray[currentBlock + 3] |
| 155 | + | (((unsigned int) sarray[currentBlock + 2]) << 8) |
| 156 | + | (((unsigned int) sarray[currentBlock + 1]) << 16) |
| 157 | + | (((unsigned int) sarray[currentBlock]) << 24); |
| 158 | + } |
| 159 | + innerHash(result, w); |
| 160 | + } |
| 161 | + } |
| 162 | + |
| 163 | + // Handle the last and not full 64 byte block if existing. |
| 164 | + endCurrentBlock = bytelength - currentBlock; |
| 165 | + clearWBuffert(w); |
| 166 | + size_t lastBlockBytes = 0; |
| 167 | + for (;lastBlockBytes < endCurrentBlock; ++lastBlockBytes) { |
| 168 | + w[lastBlockBytes >> 2] |= (unsigned int) sarray[lastBlockBytes + currentBlock] << ((3 - (lastBlockBytes & 3)) << 3); |
| 169 | + } |
| 170 | + |
| 171 | + w[lastBlockBytes >> 2] |= 0x80 << ((3 - (lastBlockBytes & 3)) << 3); |
| 172 | + if (endCurrentBlock >= 56) { |
| 173 | + innerHash(result, w); |
| 174 | + clearWBuffert(w); |
| 175 | + } |
| 176 | + w[15] = bytelength << 3; |
| 177 | + innerHash(result, w); |
| 178 | + |
| 179 | + // Store hash in result pointer, and make sure we get in in the correct |
| 180 | + // order on both endian models. |
| 181 | + for (int hashByte = 20; --hashByte >= 0;) { |
| 182 | + hash[hashByte] = (result[hashByte >> 2] >> (((3 - hashByte) & 0x3) << 3)) & 0xff; |
| 183 | + } |
| 184 | +} |
| 185 | + |
| 186 | +} // namespace sha1 |
| 187 | +} // namespace websocketpp |
| 188 | + |
| 189 | +#endif // SHA1_DEFINED |
0 commit comments