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Root/cryptopp/sha.cpp

1// sha.cpp - modified by Wei Dai from Steve Reid's public domain sha1.c
2
3// Steve Reid implemented SHA-1. Wei Dai implemented SHA-2.
4// Both are in the public domain.
5
6#include "pch.h"
7#include "sha.h"
8#include "misc.h"
9
10NAMESPACE_BEGIN(CryptoPP)
11
12void SHA::Init()
13{
14m_digest[0] = 0x67452301L;
15m_digest[1] = 0xEFCDAB89L;
16m_digest[2] = 0x98BADCFEL;
17m_digest[3] = 0x10325476L;
18m_digest[4] = 0xC3D2E1F0L;
19}
20
21// start of Steve Reid's code
22
23#define blk0(i) (W[i] = data[i])
24#define blk1(i) (W[i&15] = rotlFixed(W[(i+13)&15]^W[(i+8)&15]^W[(i+2)&15]^W[i&15],1))
25
26#define f1(x,y,z) (z^(x&(y^z)))
27#define f2(x,y,z) (x^y^z)
28#define f3(x,y,z) ((x&y)|(z&(x|y)))
29#define f4(x,y,z) (x^y^z)
30
31/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
32#define R0(v,w,x,y,z,i) z+=f1(w,x,y)+blk0(i)+0x5A827999+rotlFixed(v,5);w=rotlFixed(w,30);
33#define R1(v,w,x,y,z,i) z+=f1(w,x,y)+blk1(i)+0x5A827999+rotlFixed(v,5);w=rotlFixed(w,30);
34#define R2(v,w,x,y,z,i) z+=f2(w,x,y)+blk1(i)+0x6ED9EBA1+rotlFixed(v,5);w=rotlFixed(w,30);
35#define R3(v,w,x,y,z,i) z+=f3(w,x,y)+blk1(i)+0x8F1BBCDC+rotlFixed(v,5);w=rotlFixed(w,30);
36#define R4(v,w,x,y,z,i) z+=f4(w,x,y)+blk1(i)+0xCA62C1D6+rotlFixed(v,5);w=rotlFixed(w,30);
37
38void SHA::Transform(word32 *state, const word32 *data)
39{
40word32 W[16];
41 /* Copy context->state[] to working vars */
42 word32 a = state[0];
43 word32 b = state[1];
44 word32 c = state[2];
45 word32 d = state[3];
46 word32 e = state[4];
47 /* 4 rounds of 20 operations each. Loop unrolled. */
48 R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3);
49 R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7);
50 R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11);
51 R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15);
52 R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
53 R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);
54 R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);
55 R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);
56 R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);
57 R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);
58 R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);
59 R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);
60 R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);
61 R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);
62 R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);
63 R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);
64 R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);
65 R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);
66 R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);
67 R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);
68 /* Add the working vars back into context.state[] */
69 state[0] += a;
70 state[1] += b;
71 state[2] += c;
72 state[3] += d;
73 state[4] += e;
74 /* Wipe variables */
75 a = b = c = d = e = 0;
76memset(W, 0, sizeof(W));
77}
78
79// end of Steve Reid's code
80
81// *************************************************************
82
83void SHA256::Init()
84{
85m_digest[0] = 0x6a09e667;
86m_digest[1] = 0xbb67ae85;
87m_digest[2] = 0x3c6ef372;
88m_digest[3] = 0xa54ff53a;
89m_digest[4] = 0x510e527f;
90m_digest[5] = 0x9b05688c;
91m_digest[6] = 0x1f83d9ab;
92m_digest[7] = 0x5be0cd19;
93}
94
95#define blk2(i) (W[i&15]+=s1(W[(i-2)&15])+W[(i-7)&15]+s0(W[(i-15)&15]))
96
97#define Ch(x,y,z) (z^(x&(y^z)))
98#define Maj(x,y,z) ((x&y)|(z&(x|y)))
99
100#define a(i) T[(0-i)&7]
101#define b(i) T[(1-i)&7]
102#define c(i) T[(2-i)&7]
103#define d(i) T[(3-i)&7]
104#define e(i) T[(4-i)&7]
105#define f(i) T[(5-i)&7]
106#define g(i) T[(6-i)&7]
107#define h(i) T[(7-i)&7]
108
109#define R(i) h(i)+=S1(e(i))+Ch(e(i),f(i),g(i))+K[i+j]+(j?blk2(i):blk0(i));\
110d(i)+=h(i);h(i)+=S0(a(i))+Maj(a(i),b(i),c(i))
111
112// for SHA256
113#define S0(x) (rotrFixed(x,2)^rotrFixed(x,13)^rotrFixed(x,22))
114#define S1(x) (rotrFixed(x,6)^rotrFixed(x,11)^rotrFixed(x,25))
115#define s0(x) (rotrFixed(x,7)^rotrFixed(x,18)^(x>>3))
116#define s1(x) (rotrFixed(x,17)^rotrFixed(x,19)^(x>>10))
117
118void SHA256::Transform(word32 *state, const word32 *data)
119{
120word32 W[16];
121word32 T[8];
122 /* Copy context->state[] to working vars */
123memcpy(T, state, sizeof(T));
124 /* 64 operations, partially loop unrolled */
125for (unsigned int j=0; j<64; j+=16)
126{
127R( 0); R( 1); R( 2); R( 3);
128R( 4); R( 5); R( 6); R( 7);
129R( 8); R( 9); R(10); R(11);
130R(12); R(13); R(14); R(15);
131}
132 /* Add the working vars back into context.state[] */
133 state[0] += a(0);
134 state[1] += b(0);
135 state[2] += c(0);
136 state[3] += d(0);
137 state[4] += e(0);
138 state[5] += f(0);
139 state[6] += g(0);
140 state[7] += h(0);
141 /* Wipe variables */
142memset(W, 0, sizeof(W));
143memset(T, 0, sizeof(T));
144}
145
146const word32 SHA256::K[64] = {
1470x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
1480x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
1490xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
1500x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
1510xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
1520x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
1530x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
1540xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
1550x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
1560x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
1570xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
1580xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
1590x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
1600x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
1610x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
1620x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
163};
164
165#undef S0
166#undef S1
167#undef s0
168#undef s1
169
170// *************************************************************
171
172#ifdef WORD64_AVAILABLE
173
174void SHA512::Init()
175{
176m_digest[0] = W64LIT(0x6a09e667f3bcc908);
177m_digest[1] = W64LIT(0xbb67ae8584caa73b);
178m_digest[2] = W64LIT(0x3c6ef372fe94f82b);
179m_digest[3] = W64LIT(0xa54ff53a5f1d36f1);
180m_digest[4] = W64LIT(0x510e527fade682d1);
181m_digest[5] = W64LIT(0x9b05688c2b3e6c1f);
182m_digest[6] = W64LIT(0x1f83d9abfb41bd6b);
183m_digest[7] = W64LIT(0x5be0cd19137e2179);
184}
185
186// for SHA512
187#define S0(x) (rotrFixed(x,28)^rotrFixed(x,34)^rotrFixed(x,39))
188#define S1(x) (rotrFixed(x,14)^rotrFixed(x,18)^rotrFixed(x,41))
189#define s0(x) (rotrFixed(x,1)^rotrFixed(x,8)^(x>>7))
190#define s1(x) (rotrFixed(x,19)^rotrFixed(x,61)^(x>>6))
191
192void SHA512::Transform(word64 *state, const word64 *data)
193{
194word64 W[16];
195word64 T[8];
196 /* Copy context->state[] to working vars */
197memcpy(T, state, sizeof(T));
198 /* 80 operations, partially loop unrolled */
199for (unsigned int j=0; j<80; j+=16)
200{
201R( 0); R( 1); R( 2); R( 3);
202R( 4); R( 5); R( 6); R( 7);
203R( 8); R( 9); R(10); R(11);
204R(12); R(13); R(14); R(15);
205}
206 /* Add the working vars back into context.state[] */
207 state[0] += a(0);
208 state[1] += b(0);
209 state[2] += c(0);
210 state[3] += d(0);
211 state[4] += e(0);
212 state[5] += f(0);
213 state[6] += g(0);
214 state[7] += h(0);
215 /* Wipe variables */
216memset(W, 0, sizeof(W));
217memset(T, 0, sizeof(T));
218}
219
220const word64 SHA512::K[80] = {
221W64LIT(0x428a2f98d728ae22), W64LIT(0x7137449123ef65cd),
222W64LIT(0xb5c0fbcfec4d3b2f), W64LIT(0xe9b5dba58189dbbc),
223W64LIT(0x3956c25bf348b538), W64LIT(0x59f111f1b605d019),
224W64LIT(0x923f82a4af194f9b), W64LIT(0xab1c5ed5da6d8118),
225W64LIT(0xd807aa98a3030242), W64LIT(0x12835b0145706fbe),
226W64LIT(0x243185be4ee4b28c), W64LIT(0x550c7dc3d5ffb4e2),
227W64LIT(0x72be5d74f27b896f), W64LIT(0x80deb1fe3b1696b1),
228W64LIT(0x9bdc06a725c71235), W64LIT(0xc19bf174cf692694),
229W64LIT(0xe49b69c19ef14ad2), W64LIT(0xefbe4786384f25e3),
230W64LIT(0x0fc19dc68b8cd5b5), W64LIT(0x240ca1cc77ac9c65),
231W64LIT(0x2de92c6f592b0275), W64LIT(0x4a7484aa6ea6e483),
232W64LIT(0x5cb0a9dcbd41fbd4), W64LIT(0x76f988da831153b5),
233W64LIT(0x983e5152ee66dfab), W64LIT(0xa831c66d2db43210),
234W64LIT(0xb00327c898fb213f), W64LIT(0xbf597fc7beef0ee4),
235W64LIT(0xc6e00bf33da88fc2), W64LIT(0xd5a79147930aa725),
236W64LIT(0x06ca6351e003826f), W64LIT(0x142929670a0e6e70),
237W64LIT(0x27b70a8546d22ffc), W64LIT(0x2e1b21385c26c926),
238W64LIT(0x4d2c6dfc5ac42aed), W64LIT(0x53380d139d95b3df),
239W64LIT(0x650a73548baf63de), W64LIT(0x766a0abb3c77b2a8),
240W64LIT(0x81c2c92e47edaee6), W64LIT(0x92722c851482353b),
241W64LIT(0xa2bfe8a14cf10364), W64LIT(0xa81a664bbc423001),
242W64LIT(0xc24b8b70d0f89791), W64LIT(0xc76c51a30654be30),
243W64LIT(0xd192e819d6ef5218), W64LIT(0xd69906245565a910),
244W64LIT(0xf40e35855771202a), W64LIT(0x106aa07032bbd1b8),
245W64LIT(0x19a4c116b8d2d0c8), W64LIT(0x1e376c085141ab53),
246W64LIT(0x2748774cdf8eeb99), W64LIT(0x34b0bcb5e19b48a8),
247W64LIT(0x391c0cb3c5c95a63), W64LIT(0x4ed8aa4ae3418acb),
248W64LIT(0x5b9cca4f7763e373), W64LIT(0x682e6ff3d6b2b8a3),
249W64LIT(0x748f82ee5defb2fc), W64LIT(0x78a5636f43172f60),
250W64LIT(0x84c87814a1f0ab72), W64LIT(0x8cc702081a6439ec),
251W64LIT(0x90befffa23631e28), W64LIT(0xa4506cebde82bde9),
252W64LIT(0xbef9a3f7b2c67915), W64LIT(0xc67178f2e372532b),
253W64LIT(0xca273eceea26619c), W64LIT(0xd186b8c721c0c207),
254W64LIT(0xeada7dd6cde0eb1e), W64LIT(0xf57d4f7fee6ed178),
255W64LIT(0x06f067aa72176fba), W64LIT(0x0a637dc5a2c898a6),
256W64LIT(0x113f9804bef90dae), W64LIT(0x1b710b35131c471b),
257W64LIT(0x28db77f523047d84), W64LIT(0x32caab7b40c72493),
258W64LIT(0x3c9ebe0a15c9bebc), W64LIT(0x431d67c49c100d4c),
259W64LIT(0x4cc5d4becb3e42b6), W64LIT(0x597f299cfc657e2a),
260W64LIT(0x5fcb6fab3ad6faec), W64LIT(0x6c44198c4a475817)
261};
262
263void SHA384::Init()
264{
265m_digest[0] = W64LIT(0xcbbb9d5dc1059ed8);
266m_digest[1] = W64LIT(0x629a292a367cd507);
267m_digest[2] = W64LIT(0x9159015a3070dd17);
268m_digest[3] = W64LIT(0x152fecd8f70e5939);
269m_digest[4] = W64LIT(0x67332667ffc00b31);
270m_digest[5] = W64LIT(0x8eb44a8768581511);
271m_digest[6] = W64LIT(0xdb0c2e0d64f98fa7);
272m_digest[7] = W64LIT(0x47b5481dbefa4fa4);
273}
274
275#endif
276
277NAMESPACE_END

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