1*b30d1939SAndy Fiddaman #pragma prototyped
2*b30d1939SAndy Fiddaman
3*b30d1939SAndy Fiddaman /*
4*b30d1939SAndy Fiddaman * SHA-1 in C
5*b30d1939SAndy Fiddaman * By Steve Reid <steve@edmweb.com>
6*b30d1939SAndy Fiddaman * 100% Public Domain
7*b30d1939SAndy Fiddaman *
8*b30d1939SAndy Fiddaman * Test Vectors (from FIPS PUB 180-1)
9*b30d1939SAndy Fiddaman * "abc"
10*b30d1939SAndy Fiddaman * A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
11*b30d1939SAndy Fiddaman * "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
12*b30d1939SAndy Fiddaman * 84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
13*b30d1939SAndy Fiddaman * A million repetitions of "a"
14*b30d1939SAndy Fiddaman * 34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
15*b30d1939SAndy Fiddaman */
16*b30d1939SAndy Fiddaman
17*b30d1939SAndy Fiddaman #define sha1_description "FIPS 180-1 SHA-1 secure hash algorithm 1."
18*b30d1939SAndy Fiddaman #define sha1_options "[+(version)?sha1 (FIPS 180-1) 1996-09-26]\
19*b30d1939SAndy Fiddaman [+(author)?Steve Reid <steve@edmweb.com>]"
20*b30d1939SAndy Fiddaman #define sha1_match "sha1|SHA1|sha-1|SHA-1"
21*b30d1939SAndy Fiddaman #define sha1_scale 0
22*b30d1939SAndy Fiddaman
23*b30d1939SAndy Fiddaman #define sha1_padding md5_pad
24*b30d1939SAndy Fiddaman
25*b30d1939SAndy Fiddaman typedef struct Sha1_s
26*b30d1939SAndy Fiddaman {
27*b30d1939SAndy Fiddaman _SUM_PUBLIC_
28*b30d1939SAndy Fiddaman _SUM_PRIVATE_
29*b30d1939SAndy Fiddaman uint32_t count[2];
30*b30d1939SAndy Fiddaman uint32_t state[5];
31*b30d1939SAndy Fiddaman uint8_t buffer[64];
32*b30d1939SAndy Fiddaman uint8_t digest[20];
33*b30d1939SAndy Fiddaman uint8_t digest_sum[20];
34*b30d1939SAndy Fiddaman } Sha1_t;
35*b30d1939SAndy Fiddaman
36*b30d1939SAndy Fiddaman #define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
37*b30d1939SAndy Fiddaman
38*b30d1939SAndy Fiddaman /*
39*b30d1939SAndy Fiddaman * blk0() and blk() perform the initial expand.
40*b30d1939SAndy Fiddaman * I got the idea of expanding during the round function from SSLeay
41*b30d1939SAndy Fiddaman */
42*b30d1939SAndy Fiddaman #if _ast_intswap
43*b30d1939SAndy Fiddaman # define blk0(i) \
44*b30d1939SAndy Fiddaman (block->l[i] = (rol(block->l[i], 24) & 0xFF00FF00) \
45*b30d1939SAndy Fiddaman | (rol(block->l[i], 8) & 0x00FF00FF))
46*b30d1939SAndy Fiddaman #else
47*b30d1939SAndy Fiddaman # define blk0(i) block->l[i]
48*b30d1939SAndy Fiddaman #endif
49*b30d1939SAndy Fiddaman #define blk(i) \
50*b30d1939SAndy Fiddaman (block->l[i & 15] = rol(block->l[(i + 13) & 15] \
51*b30d1939SAndy Fiddaman ^ block->l[(i + 8) & 15] \
52*b30d1939SAndy Fiddaman ^ block->l[(i + 2) & 15] \
53*b30d1939SAndy Fiddaman ^ block->l[i & 15], 1))
54*b30d1939SAndy Fiddaman
55*b30d1939SAndy Fiddaman /*
56*b30d1939SAndy Fiddaman * (R0+R1), R2, R3, R4 are the different operations (rounds) used in SHA1
57*b30d1939SAndy Fiddaman */
58*b30d1939SAndy Fiddaman #define R0(v,w,x,y,z,i) \
59*b30d1939SAndy Fiddaman z += ((w & (x ^ y)) ^ y) + blk0(i) + 0x5A827999 + rol(v, 5); \
60*b30d1939SAndy Fiddaman w = rol(w, 30);
61*b30d1939SAndy Fiddaman #define R1(v,w,x,y,z,i) \
62*b30d1939SAndy Fiddaman z += ((w & (x ^ y)) ^ y) + blk(i) + 0x5A827999 + rol(v, 5); \
63*b30d1939SAndy Fiddaman w = rol(w, 30);
64*b30d1939SAndy Fiddaman #define R2(v,w,x,y,z,i) \
65*b30d1939SAndy Fiddaman z += (w ^ x ^ y) + blk(i) + 0x6ED9EBA1 + rol(v, 5); \
66*b30d1939SAndy Fiddaman w = rol(w, 30);
67*b30d1939SAndy Fiddaman #define R3(v,w,x,y,z,i) \
68*b30d1939SAndy Fiddaman z += (((w | x) & y) | (w & x)) + blk(i) + 0x8F1BBCDC + rol(v, 5); \
69*b30d1939SAndy Fiddaman w = rol(w, 30);
70*b30d1939SAndy Fiddaman #define R4(v,w,x,y,z,i) \
71*b30d1939SAndy Fiddaman z += (w ^ x ^ y) + blk(i) + 0xCA62C1D6 + rol(v, 5); \
72*b30d1939SAndy Fiddaman w = rol(w, 30);
73*b30d1939SAndy Fiddaman
74*b30d1939SAndy Fiddaman typedef union {
75*b30d1939SAndy Fiddaman unsigned char c[64];
76*b30d1939SAndy Fiddaman unsigned int l[16];
77*b30d1939SAndy Fiddaman } CHAR64LONG16;
78*b30d1939SAndy Fiddaman
79*b30d1939SAndy Fiddaman #ifdef __sparc_v9__
80*b30d1939SAndy Fiddaman static void do_R01(uint32_t *a, uint32_t *b, uint32_t *c,
81*b30d1939SAndy Fiddaman uint32_t *d, uint32_t *e, CHAR64LONG16 *);
82*b30d1939SAndy Fiddaman static void do_R2(uint32_t *a, uint32_t *b, uint32_t *c,
83*b30d1939SAndy Fiddaman uint32_t *d, uint32_t *e, CHAR64LONG16 *);
84*b30d1939SAndy Fiddaman static void do_R3(uint32_t *a, uint32_t *b, uint32_t *c,
85*b30d1939SAndy Fiddaman uint32_t *d, uint32_t *e, CHAR64LONG16 *);
86*b30d1939SAndy Fiddaman static void do_R4(uint32_t *a, uint32_t *b, uint32_t *c,
87*b30d1939SAndy Fiddaman uint32_t *d, uint32_t *e, CHAR64LONG16 *);
88*b30d1939SAndy Fiddaman
89*b30d1939SAndy Fiddaman #define nR0(v,w,x,y,z,i) R0(*v,*w,*x,*y,*z,i)
90*b30d1939SAndy Fiddaman #define nR1(v,w,x,y,z,i) R1(*v,*w,*x,*y,*z,i)
91*b30d1939SAndy Fiddaman #define nR2(v,w,x,y,z,i) R2(*v,*w,*x,*y,*z,i)
92*b30d1939SAndy Fiddaman #define nR3(v,w,x,y,z,i) R3(*v,*w,*x,*y,*z,i)
93*b30d1939SAndy Fiddaman #define nR4(v,w,x,y,z,i) R4(*v,*w,*x,*y,*z,i)
94*b30d1939SAndy Fiddaman
95*b30d1939SAndy Fiddaman static void
do_R01(uint32_t * a,uint32_t * b,uint32_t * c,uint32_t * d,uint32_t * e,CHAR64LONG16 * block)96*b30d1939SAndy Fiddaman do_R01(uint32_t *a, uint32_t *b, uint32_t *c, uint32_t *d,
97*b30d1939SAndy Fiddaman uint32_t *e, CHAR64LONG16 *block)
98*b30d1939SAndy Fiddaman {
99*b30d1939SAndy Fiddaman nR0(a,b,c,d,e, 0); nR0(e,a,b,c,d, 1); nR0(d,e,a,b,c, 2);
100*b30d1939SAndy Fiddaman nR0(c,d,e,a,b, 3); nR0(b,c,d,e,a, 4); nR0(a,b,c,d,e, 5);
101*b30d1939SAndy Fiddaman nR0(e,a,b,c,d, 6); nR0(d,e,a,b,c, 7); nR0(c,d,e,a,b, 8);
102*b30d1939SAndy Fiddaman nR0(b,c,d,e,a, 9); nR0(a,b,c,d,e,10); nR0(e,a,b,c,d,11);
103*b30d1939SAndy Fiddaman nR0(d,e,a,b,c,12); nR0(c,d,e,a,b,13); nR0(b,c,d,e,a,14);
104*b30d1939SAndy Fiddaman nR0(a,b,c,d,e,15); nR1(e,a,b,c,d,16); nR1(d,e,a,b,c,17);
105*b30d1939SAndy Fiddaman nR1(c,d,e,a,b,18); nR1(b,c,d,e,a,19);
106*b30d1939SAndy Fiddaman }
107*b30d1939SAndy Fiddaman
108*b30d1939SAndy Fiddaman static void
do_R2(uint32_t * a,uint32_t * b,uint32_t * c,uint32_t * d,uint32_t * e,CHAR64LONG16 * block)109*b30d1939SAndy Fiddaman do_R2(uint32_t *a, uint32_t *b, uint32_t *c, uint32_t *d,
110*b30d1939SAndy Fiddaman uint32_t *e, CHAR64LONG16 *block)
111*b30d1939SAndy Fiddaman {
112*b30d1939SAndy Fiddaman nR2(a,b,c,d,e,20); nR2(e,a,b,c,d,21); nR2(d,e,a,b,c,22);
113*b30d1939SAndy Fiddaman nR2(c,d,e,a,b,23); nR2(b,c,d,e,a,24); nR2(a,b,c,d,e,25);
114*b30d1939SAndy Fiddaman nR2(e,a,b,c,d,26); nR2(d,e,a,b,c,27); nR2(c,d,e,a,b,28);
115*b30d1939SAndy Fiddaman nR2(b,c,d,e,a,29); nR2(a,b,c,d,e,30); nR2(e,a,b,c,d,31);
116*b30d1939SAndy Fiddaman nR2(d,e,a,b,c,32); nR2(c,d,e,a,b,33); nR2(b,c,d,e,a,34);
117*b30d1939SAndy Fiddaman nR2(a,b,c,d,e,35); nR2(e,a,b,c,d,36); nR2(d,e,a,b,c,37);
118*b30d1939SAndy Fiddaman nR2(c,d,e,a,b,38); nR2(b,c,d,e,a,39);
119*b30d1939SAndy Fiddaman }
120*b30d1939SAndy Fiddaman
121*b30d1939SAndy Fiddaman static void
do_R3(uint32_t * a,uint32_t * b,uint32_t * c,uint32_t * d,uint32_t * e,CHAR64LONG16 * block)122*b30d1939SAndy Fiddaman do_R3(uint32_t *a, uint32_t *b, uint32_t *c, uint32_t *d,
123*b30d1939SAndy Fiddaman uint32_t *e, CHAR64LONG16 *block)
124*b30d1939SAndy Fiddaman {
125*b30d1939SAndy Fiddaman nR3(a,b,c,d,e,40); nR3(e,a,b,c,d,41); nR3(d,e,a,b,c,42);
126*b30d1939SAndy Fiddaman nR3(c,d,e,a,b,43); nR3(b,c,d,e,a,44); nR3(a,b,c,d,e,45);
127*b30d1939SAndy Fiddaman nR3(e,a,b,c,d,46); nR3(d,e,a,b,c,47); nR3(c,d,e,a,b,48);
128*b30d1939SAndy Fiddaman nR3(b,c,d,e,a,49); nR3(a,b,c,d,e,50); nR3(e,a,b,c,d,51);
129*b30d1939SAndy Fiddaman nR3(d,e,a,b,c,52); nR3(c,d,e,a,b,53); nR3(b,c,d,e,a,54);
130*b30d1939SAndy Fiddaman nR3(a,b,c,d,e,55); nR3(e,a,b,c,d,56); nR3(d,e,a,b,c,57);
131*b30d1939SAndy Fiddaman nR3(c,d,e,a,b,58); nR3(b,c,d,e,a,59);
132*b30d1939SAndy Fiddaman }
133*b30d1939SAndy Fiddaman
134*b30d1939SAndy Fiddaman static void
do_R4(uint32_t * a,uint32_t * b,uint32_t * c,uint32_t * d,uint32_t * e,CHAR64LONG16 * block)135*b30d1939SAndy Fiddaman do_R4(uint32_t *a, uint32_t *b, uint32_t *c, uint32_t *d,
136*b30d1939SAndy Fiddaman uint32_t *e, CHAR64LONG16 *block)
137*b30d1939SAndy Fiddaman {
138*b30d1939SAndy Fiddaman nR4(a,b,c,d,e,60); nR4(e,a,b,c,d,61); nR4(d,e,a,b,c,62);
139*b30d1939SAndy Fiddaman nR4(c,d,e,a,b,63); nR4(b,c,d,e,a,64); nR4(a,b,c,d,e,65);
140*b30d1939SAndy Fiddaman nR4(e,a,b,c,d,66); nR4(d,e,a,b,c,67); nR4(c,d,e,a,b,68);
141*b30d1939SAndy Fiddaman nR4(b,c,d,e,a,69); nR4(a,b,c,d,e,70); nR4(e,a,b,c,d,71);
142*b30d1939SAndy Fiddaman nR4(d,e,a,b,c,72); nR4(c,d,e,a,b,73); nR4(b,c,d,e,a,74);
143*b30d1939SAndy Fiddaman nR4(a,b,c,d,e,75); nR4(e,a,b,c,d,76); nR4(d,e,a,b,c,77);
144*b30d1939SAndy Fiddaman nR4(c,d,e,a,b,78); nR4(b,c,d,e,a,79);
145*b30d1939SAndy Fiddaman }
146*b30d1939SAndy Fiddaman #endif
147*b30d1939SAndy Fiddaman
148*b30d1939SAndy Fiddaman /*
149*b30d1939SAndy Fiddaman * Hash a single 512-bit block. This is the core of the algorithm.
150*b30d1939SAndy Fiddaman */
151*b30d1939SAndy Fiddaman static void
sha1_transform(uint32_t state[5],const unsigned char buffer[64])152*b30d1939SAndy Fiddaman sha1_transform(uint32_t state[5], const unsigned char buffer[64]) {
153*b30d1939SAndy Fiddaman uint32_t a, b, c, d, e;
154*b30d1939SAndy Fiddaman CHAR64LONG16 *block;
155*b30d1939SAndy Fiddaman CHAR64LONG16 workspace;
156*b30d1939SAndy Fiddaman
157*b30d1939SAndy Fiddaman block = &workspace;
158*b30d1939SAndy Fiddaman (void)memcpy(block, buffer, 64);
159*b30d1939SAndy Fiddaman
160*b30d1939SAndy Fiddaman /* Copy sha->state[] to working vars */
161*b30d1939SAndy Fiddaman a = state[0];
162*b30d1939SAndy Fiddaman b = state[1];
163*b30d1939SAndy Fiddaman c = state[2];
164*b30d1939SAndy Fiddaman d = state[3];
165*b30d1939SAndy Fiddaman e = state[4];
166*b30d1939SAndy Fiddaman
167*b30d1939SAndy Fiddaman #ifdef __sparc_v9__
168*b30d1939SAndy Fiddaman do_R01(&a, &b, &c, &d, &e, block);
169*b30d1939SAndy Fiddaman do_R2(&a, &b, &c, &d, &e, block);
170*b30d1939SAndy Fiddaman do_R3(&a, &b, &c, &d, &e, block);
171*b30d1939SAndy Fiddaman do_R4(&a, &b, &c, &d, &e, block);
172*b30d1939SAndy Fiddaman #else
173*b30d1939SAndy Fiddaman /* 4 rounds of 20 operations each. Loop unrolled. */
174*b30d1939SAndy Fiddaman 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);
175*b30d1939SAndy Fiddaman 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);
176*b30d1939SAndy Fiddaman 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);
177*b30d1939SAndy Fiddaman 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);
178*b30d1939SAndy Fiddaman 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);
179*b30d1939SAndy Fiddaman 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);
180*b30d1939SAndy Fiddaman 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);
181*b30d1939SAndy Fiddaman 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);
182*b30d1939SAndy Fiddaman 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);
183*b30d1939SAndy Fiddaman 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);
184*b30d1939SAndy Fiddaman 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);
185*b30d1939SAndy Fiddaman 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);
186*b30d1939SAndy Fiddaman 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);
187*b30d1939SAndy Fiddaman 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);
188*b30d1939SAndy Fiddaman 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);
189*b30d1939SAndy Fiddaman 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);
190*b30d1939SAndy Fiddaman 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);
191*b30d1939SAndy Fiddaman 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);
192*b30d1939SAndy Fiddaman 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);
193*b30d1939SAndy Fiddaman 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);
194*b30d1939SAndy Fiddaman #endif
195*b30d1939SAndy Fiddaman
196*b30d1939SAndy Fiddaman /* Add the working vars back into context.state[] */
197*b30d1939SAndy Fiddaman state[0] += a;
198*b30d1939SAndy Fiddaman state[1] += b;
199*b30d1939SAndy Fiddaman state[2] += c;
200*b30d1939SAndy Fiddaman state[3] += d;
201*b30d1939SAndy Fiddaman state[4] += e;
202*b30d1939SAndy Fiddaman
203*b30d1939SAndy Fiddaman /* Wipe variables */
204*b30d1939SAndy Fiddaman a = b = c = d = e = 0;
205*b30d1939SAndy Fiddaman }
206*b30d1939SAndy Fiddaman
207*b30d1939SAndy Fiddaman static int
sha1_block(register Sum_t * p,const void * s,size_t len)208*b30d1939SAndy Fiddaman sha1_block(register Sum_t* p, const void* s, size_t len)
209*b30d1939SAndy Fiddaman {
210*b30d1939SAndy Fiddaman Sha1_t* sha = (Sha1_t*)p;
211*b30d1939SAndy Fiddaman uint8_t* data = (uint8_t*)s;
212*b30d1939SAndy Fiddaman unsigned int i, j;
213*b30d1939SAndy Fiddaman
214*b30d1939SAndy Fiddaman if (len) {
215*b30d1939SAndy Fiddaman j = sha->count[0];
216*b30d1939SAndy Fiddaman if ((sha->count[0] += len << 3) < j)
217*b30d1939SAndy Fiddaman sha->count[1] += (len >> 29) + 1;
218*b30d1939SAndy Fiddaman j = (j >> 3) & 63;
219*b30d1939SAndy Fiddaman if ((j + len) > 63) {
220*b30d1939SAndy Fiddaman (void)memcpy(&sha->buffer[j], data, (i = 64 - j));
221*b30d1939SAndy Fiddaman sha1_transform(sha->state, sha->buffer);
222*b30d1939SAndy Fiddaman for ( ; i + 63 < len; i += 64)
223*b30d1939SAndy Fiddaman sha1_transform(sha->state, &data[i]);
224*b30d1939SAndy Fiddaman j = 0;
225*b30d1939SAndy Fiddaman } else {
226*b30d1939SAndy Fiddaman i = 0;
227*b30d1939SAndy Fiddaman }
228*b30d1939SAndy Fiddaman
229*b30d1939SAndy Fiddaman (void)memcpy(&sha->buffer[j], &data[i], len - i);
230*b30d1939SAndy Fiddaman }
231*b30d1939SAndy Fiddaman return 0;
232*b30d1939SAndy Fiddaman }
233*b30d1939SAndy Fiddaman
234*b30d1939SAndy Fiddaman static int
sha1_init(Sum_t * p)235*b30d1939SAndy Fiddaman sha1_init(Sum_t* p)
236*b30d1939SAndy Fiddaman {
237*b30d1939SAndy Fiddaman register Sha1_t* sha = (Sha1_t*)p;
238*b30d1939SAndy Fiddaman
239*b30d1939SAndy Fiddaman sha->count[0] = sha->count[1] = 0;
240*b30d1939SAndy Fiddaman sha->state[0] = 0x67452301;
241*b30d1939SAndy Fiddaman sha->state[1] = 0xEFCDAB89;
242*b30d1939SAndy Fiddaman sha->state[2] = 0x98BADCFE;
243*b30d1939SAndy Fiddaman sha->state[3] = 0x10325476;
244*b30d1939SAndy Fiddaman sha->state[4] = 0xC3D2E1F0;
245*b30d1939SAndy Fiddaman
246*b30d1939SAndy Fiddaman return 0;
247*b30d1939SAndy Fiddaman }
248*b30d1939SAndy Fiddaman
249*b30d1939SAndy Fiddaman static Sum_t*
sha1_open(const Method_t * method,const char * name)250*b30d1939SAndy Fiddaman sha1_open(const Method_t* method, const char* name)
251*b30d1939SAndy Fiddaman {
252*b30d1939SAndy Fiddaman Sha1_t* sha;
253*b30d1939SAndy Fiddaman
254*b30d1939SAndy Fiddaman if (sha = newof(0, Sha1_t, 1, 0))
255*b30d1939SAndy Fiddaman {
256*b30d1939SAndy Fiddaman sha->method = (Method_t*)method;
257*b30d1939SAndy Fiddaman sha->name = name;
258*b30d1939SAndy Fiddaman sha1_init((Sum_t*)sha);
259*b30d1939SAndy Fiddaman }
260*b30d1939SAndy Fiddaman return (Sum_t*)sha;
261*b30d1939SAndy Fiddaman }
262*b30d1939SAndy Fiddaman
263*b30d1939SAndy Fiddaman /*
264*b30d1939SAndy Fiddaman * Add padding and return the message digest.
265*b30d1939SAndy Fiddaman */
266*b30d1939SAndy Fiddaman
267*b30d1939SAndy Fiddaman static const unsigned char final_200 = 128;
268*b30d1939SAndy Fiddaman static const unsigned char final_0 = 0;
269*b30d1939SAndy Fiddaman
270*b30d1939SAndy Fiddaman static int
sha1_done(Sum_t * p)271*b30d1939SAndy Fiddaman sha1_done(Sum_t* p)
272*b30d1939SAndy Fiddaman {
273*b30d1939SAndy Fiddaman Sha1_t* sha = (Sha1_t*)p;
274*b30d1939SAndy Fiddaman unsigned int i;
275*b30d1939SAndy Fiddaman unsigned char finalcount[8];
276*b30d1939SAndy Fiddaman
277*b30d1939SAndy Fiddaman for (i = 0; i < 8; i++) {
278*b30d1939SAndy Fiddaman /* Endian independent */
279*b30d1939SAndy Fiddaman finalcount[i] = (unsigned char)
280*b30d1939SAndy Fiddaman ((sha->count[(i >= 4 ? 0 : 1)]
281*b30d1939SAndy Fiddaman >> ((3 - (i & 3)) * 8)) & 255);
282*b30d1939SAndy Fiddaman }
283*b30d1939SAndy Fiddaman
284*b30d1939SAndy Fiddaman sha1_block(p, &final_200, 1);
285*b30d1939SAndy Fiddaman while ((sha->count[0] & 504) != 448)
286*b30d1939SAndy Fiddaman sha1_block(p, &final_0, 1);
287*b30d1939SAndy Fiddaman /* The next Update should cause a sha1_transform() */
288*b30d1939SAndy Fiddaman sha1_block(p, finalcount, 8);
289*b30d1939SAndy Fiddaman
290*b30d1939SAndy Fiddaman for (i = 0; i < elementsof(sha->digest); i++)
291*b30d1939SAndy Fiddaman {
292*b30d1939SAndy Fiddaman sha->digest[i] = (unsigned char)((sha->state[i >> 2] >> ((3 - (i & 3)) * 8)) & 255);
293*b30d1939SAndy Fiddaman sha->digest_sum[i] ^= sha->digest[i];
294*b30d1939SAndy Fiddaman }
295*b30d1939SAndy Fiddaman memset(sha->count, 0, sizeof(sha->count));
296*b30d1939SAndy Fiddaman memset(sha->state, 0, sizeof(sha->state));
297*b30d1939SAndy Fiddaman memset(sha->buffer, 0, sizeof(sha->buffer));
298*b30d1939SAndy Fiddaman return 0;
299*b30d1939SAndy Fiddaman }
300*b30d1939SAndy Fiddaman
301*b30d1939SAndy Fiddaman static int
sha1_print(Sum_t * p,Sfio_t * sp,register int flags,size_t scale)302*b30d1939SAndy Fiddaman sha1_print(Sum_t* p, Sfio_t* sp, register int flags, size_t scale)
303*b30d1939SAndy Fiddaman {
304*b30d1939SAndy Fiddaman register Sha1_t* sha = (Sha1_t*)p;
305*b30d1939SAndy Fiddaman register unsigned char* d;
306*b30d1939SAndy Fiddaman register int n;
307*b30d1939SAndy Fiddaman
308*b30d1939SAndy Fiddaman d = (flags & SUM_TOTAL) ? sha->digest_sum : sha->digest;
309*b30d1939SAndy Fiddaman for (n = 0; n < elementsof(sha->digest); n++)
310*b30d1939SAndy Fiddaman sfprintf(sp, "%02x", d[n]);
311*b30d1939SAndy Fiddaman return 0;
312*b30d1939SAndy Fiddaman }
313*b30d1939SAndy Fiddaman
314*b30d1939SAndy Fiddaman static int
sha1_data(Sum_t * p,Sumdata_t * data)315*b30d1939SAndy Fiddaman sha1_data(Sum_t* p, Sumdata_t* data)
316*b30d1939SAndy Fiddaman {
317*b30d1939SAndy Fiddaman register Sha1_t* sha = (Sha1_t*)p;
318*b30d1939SAndy Fiddaman
319*b30d1939SAndy Fiddaman data->size = elementsof(sha->digest);
320*b30d1939SAndy Fiddaman data->num = 0;
321*b30d1939SAndy Fiddaman data->buf = sha->digest;
322*b30d1939SAndy Fiddaman return 0;
323*b30d1939SAndy Fiddaman }
324