|
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 |
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