3 * By Steve Reid <steve@edmweb.com>
9 #include <freeradius-devel/ident.h>
12 #include <freeradius-devel/autoconf.h>
13 #include <freeradius-devel/libradius.h>
15 #include "../include/sha1.h"
17 #ifndef WITH_OPENSSL_SHA1
18 #define blk0(i) (block->l[i] = htonl(block->l[i]))
20 #define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
22 /* blk0() and blk() perform the initial expand. */
23 /* I got the idea of expanding during the round function from SSLeay */
25 #define blk0(i) (block->l[i] = htonl(block->l[i]))
27 #define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
28 ^block->l[(i+2)&15]^block->l[i&15],1))
30 /* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
31 #define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
32 #define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
33 #define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
34 #define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
35 #define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
38 /* Hash a single 512-bit block. This is the core of the algorithm. */
40 void fr_SHA1Transform(uint32_t state[5], const uint8_t buffer[64])
42 uint32_t a, b, c, d, e;
48 uint8_t workspace[64];
50 block = (CHAR64LONG16*)workspace;
51 memcpy(block, buffer, 64);
52 /* Copy context->state[] to working vars */
58 /* 4 rounds of 20 operations each. Loop unrolled. */
59 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);
60 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);
61 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);
62 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);
63 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);
64 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);
65 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);
66 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);
67 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);
68 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);
69 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);
70 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);
71 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);
72 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);
73 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);
74 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);
75 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);
76 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);
77 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);
78 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);
79 /* Add the working vars back into context.state[] */
86 a = b = c = d = e = 0;
90 /* fr_SHA1Init - Initialize new context */
92 void fr_SHA1Init(fr_SHA1_CTX* context)
94 /* SHA1 initialization constants */
95 context->state[0] = 0x67452301;
96 context->state[1] = 0xEFCDAB89;
97 context->state[2] = 0x98BADCFE;
98 context->state[3] = 0x10325476;
99 context->state[4] = 0xC3D2E1F0;
100 context->count[0] = context->count[1] = 0;
104 /* Run your data through this. */
106 void fr_SHA1Update(fr_SHA1_CTX* context, const uint8_t* data, unsigned int len)
110 j = (context->count[0] >> 3) & 63;
111 if ((context->count[0] += len << 3) < (len << 3)) context->count[1]++;
112 context->count[1] += (len >> 29);
113 if ((j + len) > 63) {
114 memcpy(&context->buffer[j], data, (i = 64-j));
115 fr_SHA1Transform(context->state, context->buffer);
116 for ( ; i + 63 < len; i += 64) {
117 fr_SHA1Transform(context->state, &data[i]);
122 memcpy(&context->buffer[j], &data[i], len - i);
126 /* Add padding and return the message digest. */
128 void fr_SHA1Final(uint8_t digest[20], fr_SHA1_CTX* context)
131 uint8_t finalcount[8];
133 for (i = 0; i < 8; i++) {
134 finalcount[i] = (uint8_t)((context->count[(i >= 4 ? 0 : 1)]
135 >> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */
137 fr_SHA1Update(context, (const unsigned char *) "\200", 1);
138 while ((context->count[0] & 504) != 448) {
139 fr_SHA1Update(context, (const unsigned char *) "\0", 1);
141 fr_SHA1Update(context, finalcount, 8); /* Should cause a fr_SHA1Transform() */
142 for (i = 0; i < 20; i++) {
143 digest[i] = (uint8_t)
144 ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
148 memset(context->buffer, 0, 64);
149 memset(context->state, 0, 20);
150 memset(context->count, 0, 8);
151 memset(&finalcount, 0, 8);
152 #ifdef SHA1HANDSOFF /* make fr_SHA1Transform overwrite it's own static vars */
153 fr_SHA1Transform(context->state, context->buffer);
157 void fr_SHA1FinalNoLen(uint8_t digest[20], fr_SHA1_CTX* context)
161 for (i = 0; i < 20; i++) {
162 digest[i] = (uint8_t)
163 ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
168 memset(context->buffer, 0, 64);
169 memset(context->state, 0, 20);
170 memset(context->count, 0, 8);
172 #ifdef SHA1HANDSOFF /* make fr_SHA1Transform overwrite it's own static vars */
173 fr_SHA1Transform(context->state, context->buffer);