| 2 |
- |
1 |
/*
|
| 33 |
7u83 |
2 |
* sha2_256 block cipher - unrolled version
|
| 2 |
- |
3 |
*
|
|
|
4 |
* note: the following upper and lower case macro names are distinct
|
|
|
5 |
* and reflect the functions defined in FIPS pub. 180-2.
|
|
|
6 |
*/
|
|
|
7 |
|
| 33 |
7u83 |
8 |
#include "os.h"
|
| 2 |
- |
9 |
|
|
|
10 |
#define ROTR(x,n) (((x) >> (n)) | ((x) << (32-(n))))
|
|
|
11 |
#define sigma0(x) (ROTR((x),7) ^ ROTR((x),18) ^ ((x) >> 3))
|
|
|
12 |
#define sigma1(x) (ROTR((x),17) ^ ROTR((x),19) ^ ((x) >> 10))
|
|
|
13 |
#define SIGMA0(x) (ROTR((x),2) ^ ROTR((x),13) ^ ROTR((x),22))
|
|
|
14 |
#define SIGMA1(x) (ROTR((x),6) ^ ROTR((x),11) ^ ROTR((x),25))
|
| 33 |
7u83 |
15 |
#define Ch(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
|
|
|
16 |
#define Maj(x,y,z) (((x) | (y)) & ((z) | ((x) & (y))))
|
| 2 |
- |
17 |
|
|
|
18 |
/*
|
|
|
19 |
* first 32 bits of the fractional parts of cube roots of
|
|
|
20 |
* first 64 primes (2..311).
|
|
|
21 |
*/
|
|
|
22 |
static u32int K256[64] = {
|
|
|
23 |
0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5,
|
|
|
24 |
0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5,
|
|
|
25 |
0xd807aa98,0x12835b01,0x243185be,0x550c7dc3,
|
|
|
26 |
0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174,
|
|
|
27 |
0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc,
|
|
|
28 |
0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da,
|
|
|
29 |
0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7,
|
|
|
30 |
0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967,
|
|
|
31 |
0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13,
|
|
|
32 |
0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85,
|
|
|
33 |
0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3,
|
|
|
34 |
0xd192e819,0xd6990624,0xf40e3585,0x106aa070,
|
|
|
35 |
0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5,
|
|
|
36 |
0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3,
|
|
|
37 |
0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208,
|
|
|
38 |
0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2,
|
|
|
39 |
};
|
|
|
40 |
|
|
|
41 |
void
|
|
|
42 |
_sha2block64(uchar *p, ulong len, u32int *s)
|
|
|
43 |
{
|
| 33 |
7u83 |
44 |
u32int w[16], a, b, c, d, e, f, g, h;
|
| 2 |
- |
45 |
uchar *end;
|
|
|
46 |
|
|
|
47 |
/* at this point, we have a multiple of 64 bytes */
|
|
|
48 |
for(end = p+len; p < end;){
|
|
|
49 |
a = s[0];
|
|
|
50 |
b = s[1];
|
|
|
51 |
c = s[2];
|
|
|
52 |
d = s[3];
|
|
|
53 |
e = s[4];
|
|
|
54 |
f = s[5];
|
|
|
55 |
g = s[6];
|
|
|
56 |
h = s[7];
|
|
|
57 |
|
| 33 |
7u83 |
58 |
#define STEP(a,b,c,d,e,f,g,h,i) \
|
|
|
59 |
if(i < 16) {\
|
|
|
60 |
w[i] = p[0]<<24 | p[1]<<16 | p[2]<<8 | p[3]; \
|
|
|
61 |
p += 4; \
|
|
|
62 |
} else { \
|
|
|
63 |
w[i&15] += sigma1(w[i-2&15]) + w[i-7&15] + sigma0(w[i-15&15]); \
|
|
|
64 |
} \
|
|
|
65 |
h += SIGMA1(e) + Ch(e,f,g) + K256[i] + w[i&15]; \
|
|
|
66 |
d += h; \
|
|
|
67 |
h += SIGMA0(a) + Maj(a,b,c);
|
| 2 |
- |
68 |
|
| 33 |
7u83 |
69 |
STEP(a,b,c,d,e,f,g,h,0);
|
|
|
70 |
STEP(h,a,b,c,d,e,f,g,1);
|
|
|
71 |
STEP(g,h,a,b,c,d,e,f,2);
|
|
|
72 |
STEP(f,g,h,a,b,c,d,e,3);
|
|
|
73 |
STEP(e,f,g,h,a,b,c,d,4);
|
|
|
74 |
STEP(d,e,f,g,h,a,b,c,5);
|
|
|
75 |
STEP(c,d,e,f,g,h,a,b,6);
|
|
|
76 |
STEP(b,c,d,e,f,g,h,a,7);
|
| 2 |
- |
77 |
|
| 33 |
7u83 |
78 |
STEP(a,b,c,d,e,f,g,h,8);
|
|
|
79 |
STEP(h,a,b,c,d,e,f,g,9);
|
|
|
80 |
STEP(g,h,a,b,c,d,e,f,10);
|
|
|
81 |
STEP(f,g,h,a,b,c,d,e,11);
|
|
|
82 |
STEP(e,f,g,h,a,b,c,d,12);
|
|
|
83 |
STEP(d,e,f,g,h,a,b,c,13);
|
|
|
84 |
STEP(c,d,e,f,g,h,a,b,14);
|
|
|
85 |
STEP(b,c,d,e,f,g,h,a,15);
|
|
|
86 |
|
|
|
87 |
STEP(a,b,c,d,e,f,g,h,16);
|
|
|
88 |
STEP(h,a,b,c,d,e,f,g,17);
|
|
|
89 |
STEP(g,h,a,b,c,d,e,f,18);
|
|
|
90 |
STEP(f,g,h,a,b,c,d,e,19);
|
|
|
91 |
STEP(e,f,g,h,a,b,c,d,20);
|
|
|
92 |
STEP(d,e,f,g,h,a,b,c,21);
|
|
|
93 |
STEP(c,d,e,f,g,h,a,b,22);
|
|
|
94 |
STEP(b,c,d,e,f,g,h,a,23);
|
|
|
95 |
|
|
|
96 |
STEP(a,b,c,d,e,f,g,h,24);
|
|
|
97 |
STEP(h,a,b,c,d,e,f,g,25);
|
|
|
98 |
STEP(g,h,a,b,c,d,e,f,26);
|
|
|
99 |
STEP(f,g,h,a,b,c,d,e,27);
|
|
|
100 |
STEP(e,f,g,h,a,b,c,d,28);
|
|
|
101 |
STEP(d,e,f,g,h,a,b,c,29);
|
|
|
102 |
STEP(c,d,e,f,g,h,a,b,30);
|
|
|
103 |
STEP(b,c,d,e,f,g,h,a,31);
|
|
|
104 |
|
|
|
105 |
STEP(a,b,c,d,e,f,g,h,32);
|
|
|
106 |
STEP(h,a,b,c,d,e,f,g,33);
|
|
|
107 |
STEP(g,h,a,b,c,d,e,f,34);
|
|
|
108 |
STEP(f,g,h,a,b,c,d,e,35);
|
|
|
109 |
STEP(e,f,g,h,a,b,c,d,36);
|
|
|
110 |
STEP(d,e,f,g,h,a,b,c,37);
|
|
|
111 |
STEP(c,d,e,f,g,h,a,b,38);
|
|
|
112 |
STEP(b,c,d,e,f,g,h,a,39);
|
|
|
113 |
|
|
|
114 |
STEP(a,b,c,d,e,f,g,h,40);
|
|
|
115 |
STEP(h,a,b,c,d,e,f,g,41);
|
|
|
116 |
STEP(g,h,a,b,c,d,e,f,42);
|
|
|
117 |
STEP(f,g,h,a,b,c,d,e,43);
|
|
|
118 |
STEP(e,f,g,h,a,b,c,d,44);
|
|
|
119 |
STEP(d,e,f,g,h,a,b,c,45);
|
|
|
120 |
STEP(c,d,e,f,g,h,a,b,46);
|
|
|
121 |
STEP(b,c,d,e,f,g,h,a,47);
|
|
|
122 |
|
|
|
123 |
STEP(a,b,c,d,e,f,g,h,48);
|
|
|
124 |
STEP(h,a,b,c,d,e,f,g,49);
|
|
|
125 |
STEP(g,h,a,b,c,d,e,f,50);
|
|
|
126 |
STEP(f,g,h,a,b,c,d,e,51);
|
|
|
127 |
STEP(e,f,g,h,a,b,c,d,52);
|
|
|
128 |
STEP(d,e,f,g,h,a,b,c,53);
|
|
|
129 |
STEP(c,d,e,f,g,h,a,b,54);
|
|
|
130 |
STEP(b,c,d,e,f,g,h,a,55);
|
|
|
131 |
|
|
|
132 |
STEP(a,b,c,d,e,f,g,h,56);
|
|
|
133 |
STEP(h,a,b,c,d,e,f,g,57);
|
|
|
134 |
STEP(g,h,a,b,c,d,e,f,58);
|
|
|
135 |
STEP(f,g,h,a,b,c,d,e,59);
|
|
|
136 |
STEP(e,f,g,h,a,b,c,d,60);
|
|
|
137 |
STEP(d,e,f,g,h,a,b,c,61);
|
|
|
138 |
STEP(c,d,e,f,g,h,a,b,62);
|
|
|
139 |
STEP(b,c,d,e,f,g,h,a,63);
|
|
|
140 |
|
| 2 |
- |
141 |
s[0] += a;
|
|
|
142 |
s[1] += b;
|
|
|
143 |
s[2] += c;
|
|
|
144 |
s[3] += d;
|
|
|
145 |
s[4] += e;
|
|
|
146 |
s[5] += f;
|
|
|
147 |
s[6] += g;
|
|
|
148 |
s[7] += h;
|
|
|
149 |
}
|
|
|
150 |
}
|