4  * SHA-1 in C
8  * Test Vectors (from FIPS PUB 180-1)
10  *   A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
13  * A million repetitions of "a"
24 #define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
29 #define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
30     |(rol(block->l[i],8)&0x00FF00FF))
32 #define blk0(i) block->l[i]
34 #define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
35     ^block->l[(i+2)&15]^block->l[i&15],1))
44 /* Hash a single 512-bit block. This is the core of the algorithm. */
49     uint32_t a, b, c, d, e;  in ldns_sha1_transform()  local
51         unsigned char c[64];  in ldns_sha1_transform()  member
63     /* Copy context->state[] to working vars */  in ldns_sha1_transform()
64     a = state[0];  in ldns_sha1_transform()
66     c = state[2];  in ldns_sha1_transform()
71     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);  in ldns_sha1_transform()
72     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);  in ldns_sha1_transform()
73     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);  in ldns_sha1_transform()
74     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);  in ldns_sha1_transform()
75     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);  in ldns_sha1_transform()
76     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);  in ldns_sha1_transform()
77     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);  in ldns_sha1_transform()
78     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);  in ldns_sha1_transform()
79     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);  in ldns_sha1_transform()
80     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);  in ldns_sha1_transform()
81     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);  in ldns_sha1_transform()
82     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);  in ldns_sha1_transform()
83     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);  in ldns_sha1_transform()
84     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);  in ldns_sha1_transform()
85     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);  in ldns_sha1_transform()
86     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);  in ldns_sha1_transform()
87     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);  in ldns_sha1_transform()
88     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);  in ldns_sha1_transform()
89     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);  in ldns_sha1_transform()
90     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);  in ldns_sha1_transform()
93     state[0] += a;  in ldns_sha1_transform()
95     state[2] += c;  in ldns_sha1_transform()
99     a = b = c = d = e = 0;  in ldns_sha1_transform()
100     (void)a;  in ldns_sha1_transform()
104 /* SHA1Init - Initialize new context */
110     context->count = 0;  in ldns_sha1_init()
111     context->state[0] = 0x67452301;  in ldns_sha1_init()
112     context->state[1] = 0xEFCDAB89;  in ldns_sha1_init()
113     context->state[2] = 0x98BADCFE;  in ldns_sha1_init()
114     context->state[3] = 0x10325476;  in ldns_sha1_init()
115     context->state[4] = 0xC3D2E1F0;  in ldns_sha1_init()
127     j = (unsigned)(uint32_t)((context->count >> 3) & 63);  in ldns_sha1_update()
128     context->count += (len << 3);  in ldns_sha1_update()
130         memmove(&context->buffer[j], data, (i = 64 - j));  in ldns_sha1_update()
131         ldns_sha1_transform(context->state, context->buffer);  in ldns_sha1_update()
133             ldns_sha1_transform(context->state, &data[i]);  in ldns_sha1_update()
138     memmove(&context->buffer[j], &data[i], len - i);  in ldns_sha1_update()
151         finalcount[i] = (unsigned char)((context->count >>  in ldns_sha1_final()
152             ((7 - (i & 7)) * 8)) & 255);  /* Endian independent */  in ldns_sha1_final()
155     while ((context->count & 504) != 448) {  in ldns_sha1_final()
158     ldns_sha1_update(context, finalcount, 8);  /* Should cause a SHA1Transform() */  in ldns_sha1_final()
162             digest[i] = (unsigned char)((context->state[i >> 2] >>  in ldns_sha1_final()
163                 ((3 - (i & 3)) * 8)) & 255);  in ldns_sha1_final()
166     ldns_sha1_transform(context->state, context->buffer);  in ldns_sha1_final()