Annotation of src/usr.bin/ssh/blocks.c, Revision 1.2
1.2 ! djm 1: /* $OpenBSD$ */
1.1 markus 2:
3: /* Public Domain, from supercop-20130419/crypto_hashblocks/sha512/ref/blocks.c */
4:
5: #include "crypto_api.h"
6:
7: typedef unsigned long long uint64;
8:
9: static uint64 load_bigendian(const unsigned char *x)
10: {
11: return
12: (uint64) (x[7]) \
13: | (((uint64) (x[6])) << 8) \
14: | (((uint64) (x[5])) << 16) \
15: | (((uint64) (x[4])) << 24) \
16: | (((uint64) (x[3])) << 32) \
17: | (((uint64) (x[2])) << 40) \
18: | (((uint64) (x[1])) << 48) \
19: | (((uint64) (x[0])) << 56)
20: ;
21: }
22:
23: static void store_bigendian(unsigned char *x,uint64 u)
24: {
25: x[7] = u; u >>= 8;
26: x[6] = u; u >>= 8;
27: x[5] = u; u >>= 8;
28: x[4] = u; u >>= 8;
29: x[3] = u; u >>= 8;
30: x[2] = u; u >>= 8;
31: x[1] = u; u >>= 8;
32: x[0] = u;
33: }
34:
35: #define SHR(x,c) ((x) >> (c))
36: #define ROTR(x,c) (((x) >> (c)) | ((x) << (64 - (c))))
37:
38: #define Ch(x,y,z) ((x & y) ^ (~x & z))
39: #define Maj(x,y,z) ((x & y) ^ (x & z) ^ (y & z))
40: #define Sigma0(x) (ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39))
41: #define Sigma1(x) (ROTR(x,14) ^ ROTR(x,18) ^ ROTR(x,41))
42: #define sigma0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x,7))
43: #define sigma1(x) (ROTR(x,19) ^ ROTR(x,61) ^ SHR(x,6))
44:
45: #define M(w0,w14,w9,w1) w0 = sigma1(w14) + w9 + sigma0(w1) + w0;
46:
47: #define EXPAND \
48: M(w0 ,w14,w9 ,w1 ) \
49: M(w1 ,w15,w10,w2 ) \
50: M(w2 ,w0 ,w11,w3 ) \
51: M(w3 ,w1 ,w12,w4 ) \
52: M(w4 ,w2 ,w13,w5 ) \
53: M(w5 ,w3 ,w14,w6 ) \
54: M(w6 ,w4 ,w15,w7 ) \
55: M(w7 ,w5 ,w0 ,w8 ) \
56: M(w8 ,w6 ,w1 ,w9 ) \
57: M(w9 ,w7 ,w2 ,w10) \
58: M(w10,w8 ,w3 ,w11) \
59: M(w11,w9 ,w4 ,w12) \
60: M(w12,w10,w5 ,w13) \
61: M(w13,w11,w6 ,w14) \
62: M(w14,w12,w7 ,w15) \
63: M(w15,w13,w8 ,w0 )
64:
65: #define F(w,k) \
66: T1 = h + Sigma1(e) + Ch(e,f,g) + k + w; \
67: T2 = Sigma0(a) + Maj(a,b,c); \
68: h = g; \
69: g = f; \
70: f = e; \
71: e = d + T1; \
72: d = c; \
73: c = b; \
74: b = a; \
75: a = T1 + T2;
76:
77: int crypto_hashblocks_sha512(unsigned char *statebytes,const unsigned char *in,unsigned long long inlen)
78: {
79: uint64 state[8];
80: uint64 a;
81: uint64 b;
82: uint64 c;
83: uint64 d;
84: uint64 e;
85: uint64 f;
86: uint64 g;
87: uint64 h;
88: uint64 T1;
89: uint64 T2;
90:
91: a = load_bigendian(statebytes + 0); state[0] = a;
92: b = load_bigendian(statebytes + 8); state[1] = b;
93: c = load_bigendian(statebytes + 16); state[2] = c;
94: d = load_bigendian(statebytes + 24); state[3] = d;
95: e = load_bigendian(statebytes + 32); state[4] = e;
96: f = load_bigendian(statebytes + 40); state[5] = f;
97: g = load_bigendian(statebytes + 48); state[6] = g;
98: h = load_bigendian(statebytes + 56); state[7] = h;
99:
100: while (inlen >= 128) {
101: uint64 w0 = load_bigendian(in + 0);
102: uint64 w1 = load_bigendian(in + 8);
103: uint64 w2 = load_bigendian(in + 16);
104: uint64 w3 = load_bigendian(in + 24);
105: uint64 w4 = load_bigendian(in + 32);
106: uint64 w5 = load_bigendian(in + 40);
107: uint64 w6 = load_bigendian(in + 48);
108: uint64 w7 = load_bigendian(in + 56);
109: uint64 w8 = load_bigendian(in + 64);
110: uint64 w9 = load_bigendian(in + 72);
111: uint64 w10 = load_bigendian(in + 80);
112: uint64 w11 = load_bigendian(in + 88);
113: uint64 w12 = load_bigendian(in + 96);
114: uint64 w13 = load_bigendian(in + 104);
115: uint64 w14 = load_bigendian(in + 112);
116: uint64 w15 = load_bigendian(in + 120);
117:
118: F(w0 ,0x428a2f98d728ae22ULL)
119: F(w1 ,0x7137449123ef65cdULL)
120: F(w2 ,0xb5c0fbcfec4d3b2fULL)
121: F(w3 ,0xe9b5dba58189dbbcULL)
122: F(w4 ,0x3956c25bf348b538ULL)
123: F(w5 ,0x59f111f1b605d019ULL)
124: F(w6 ,0x923f82a4af194f9bULL)
125: F(w7 ,0xab1c5ed5da6d8118ULL)
126: F(w8 ,0xd807aa98a3030242ULL)
127: F(w9 ,0x12835b0145706fbeULL)
128: F(w10,0x243185be4ee4b28cULL)
129: F(w11,0x550c7dc3d5ffb4e2ULL)
130: F(w12,0x72be5d74f27b896fULL)
131: F(w13,0x80deb1fe3b1696b1ULL)
132: F(w14,0x9bdc06a725c71235ULL)
133: F(w15,0xc19bf174cf692694ULL)
134:
135: EXPAND
136:
137: F(w0 ,0xe49b69c19ef14ad2ULL)
138: F(w1 ,0xefbe4786384f25e3ULL)
139: F(w2 ,0x0fc19dc68b8cd5b5ULL)
140: F(w3 ,0x240ca1cc77ac9c65ULL)
141: F(w4 ,0x2de92c6f592b0275ULL)
142: F(w5 ,0x4a7484aa6ea6e483ULL)
143: F(w6 ,0x5cb0a9dcbd41fbd4ULL)
144: F(w7 ,0x76f988da831153b5ULL)
145: F(w8 ,0x983e5152ee66dfabULL)
146: F(w9 ,0xa831c66d2db43210ULL)
147: F(w10,0xb00327c898fb213fULL)
148: F(w11,0xbf597fc7beef0ee4ULL)
149: F(w12,0xc6e00bf33da88fc2ULL)
150: F(w13,0xd5a79147930aa725ULL)
151: F(w14,0x06ca6351e003826fULL)
152: F(w15,0x142929670a0e6e70ULL)
153:
154: EXPAND
155:
156: F(w0 ,0x27b70a8546d22ffcULL)
157: F(w1 ,0x2e1b21385c26c926ULL)
158: F(w2 ,0x4d2c6dfc5ac42aedULL)
159: F(w3 ,0x53380d139d95b3dfULL)
160: F(w4 ,0x650a73548baf63deULL)
161: F(w5 ,0x766a0abb3c77b2a8ULL)
162: F(w6 ,0x81c2c92e47edaee6ULL)
163: F(w7 ,0x92722c851482353bULL)
164: F(w8 ,0xa2bfe8a14cf10364ULL)
165: F(w9 ,0xa81a664bbc423001ULL)
166: F(w10,0xc24b8b70d0f89791ULL)
167: F(w11,0xc76c51a30654be30ULL)
168: F(w12,0xd192e819d6ef5218ULL)
169: F(w13,0xd69906245565a910ULL)
170: F(w14,0xf40e35855771202aULL)
171: F(w15,0x106aa07032bbd1b8ULL)
172:
173: EXPAND
174:
175: F(w0 ,0x19a4c116b8d2d0c8ULL)
176: F(w1 ,0x1e376c085141ab53ULL)
177: F(w2 ,0x2748774cdf8eeb99ULL)
178: F(w3 ,0x34b0bcb5e19b48a8ULL)
179: F(w4 ,0x391c0cb3c5c95a63ULL)
180: F(w5 ,0x4ed8aa4ae3418acbULL)
181: F(w6 ,0x5b9cca4f7763e373ULL)
182: F(w7 ,0x682e6ff3d6b2b8a3ULL)
183: F(w8 ,0x748f82ee5defb2fcULL)
184: F(w9 ,0x78a5636f43172f60ULL)
185: F(w10,0x84c87814a1f0ab72ULL)
186: F(w11,0x8cc702081a6439ecULL)
187: F(w12,0x90befffa23631e28ULL)
188: F(w13,0xa4506cebde82bde9ULL)
189: F(w14,0xbef9a3f7b2c67915ULL)
190: F(w15,0xc67178f2e372532bULL)
191:
192: EXPAND
193:
194: F(w0 ,0xca273eceea26619cULL)
195: F(w1 ,0xd186b8c721c0c207ULL)
196: F(w2 ,0xeada7dd6cde0eb1eULL)
197: F(w3 ,0xf57d4f7fee6ed178ULL)
198: F(w4 ,0x06f067aa72176fbaULL)
199: F(w5 ,0x0a637dc5a2c898a6ULL)
200: F(w6 ,0x113f9804bef90daeULL)
201: F(w7 ,0x1b710b35131c471bULL)
202: F(w8 ,0x28db77f523047d84ULL)
203: F(w9 ,0x32caab7b40c72493ULL)
204: F(w10,0x3c9ebe0a15c9bebcULL)
205: F(w11,0x431d67c49c100d4cULL)
206: F(w12,0x4cc5d4becb3e42b6ULL)
207: F(w13,0x597f299cfc657e2aULL)
208: F(w14,0x5fcb6fab3ad6faecULL)
209: F(w15,0x6c44198c4a475817ULL)
210:
211: a += state[0];
212: b += state[1];
213: c += state[2];
214: d += state[3];
215: e += state[4];
216: f += state[5];
217: g += state[6];
218: h += state[7];
219:
220: state[0] = a;
221: state[1] = b;
222: state[2] = c;
223: state[3] = d;
224: state[4] = e;
225: state[5] = f;
226: state[6] = g;
227: state[7] = h;
228:
229: in += 128;
230: inlen -= 128;
231: }
232:
233: store_bigendian(statebytes + 0,state[0]);
234: store_bigendian(statebytes + 8,state[1]);
235: store_bigendian(statebytes + 16,state[2]);
236: store_bigendian(statebytes + 24,state[3]);
237: store_bigendian(statebytes + 32,state[4]);
238: store_bigendian(statebytes + 40,state[5]);
239: store_bigendian(statebytes + 48,state[6]);
240: store_bigendian(statebytes + 56,state[7]);
241:
242: return inlen;
243: }
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