Line data Source code
1 : /* LibTomCrypt, modular cryptographic library -- Tom St Denis
2 : *
3 : * LibTomCrypt is a library that provides various cryptographic
4 : * algorithms in a highly modular and flexible manner.
5 : *
6 : * The library is free for all purposes without any express
7 : * guarantee it works.
8 : *
9 : * Tom St Denis, tomstdenis@gmail.com, http://libtom.org
10 : */
11 :
12 : #include "sha512.h"
13 : #include <stdio.h>
14 :
15 : /* the K array */
16 : static const uint64_t K[80] =
17 : {
18 : UINT64_C(0x428a2f98d728ae22),UINT64_C(0x7137449123ef65cd),
19 : UINT64_C(0xb5c0fbcfec4d3b2f),UINT64_C(0xe9b5dba58189dbbc),
20 : UINT64_C(0x3956c25bf348b538),UINT64_C(0x59f111f1b605d019),
21 : UINT64_C(0x923f82a4af194f9b),UINT64_C(0xab1c5ed5da6d8118),
22 : UINT64_C(0xd807aa98a3030242),UINT64_C(0x12835b0145706fbe),
23 : UINT64_C(0x243185be4ee4b28c),UINT64_C(0x550c7dc3d5ffb4e2),
24 : UINT64_C(0x72be5d74f27b896f),UINT64_C(0x80deb1fe3b1696b1),
25 : UINT64_C(0x9bdc06a725c71235),UINT64_C(0xc19bf174cf692694),
26 : UINT64_C(0xe49b69c19ef14ad2),UINT64_C(0xefbe4786384f25e3),
27 : UINT64_C(0x0fc19dc68b8cd5b5),UINT64_C(0x240ca1cc77ac9c65),
28 : UINT64_C(0x2de92c6f592b0275),UINT64_C(0x4a7484aa6ea6e483),
29 : UINT64_C(0x5cb0a9dcbd41fbd4),UINT64_C(0x76f988da831153b5),
30 : UINT64_C(0x983e5152ee66dfab),UINT64_C(0xa831c66d2db43210),
31 : UINT64_C(0xb00327c898fb213f),UINT64_C(0xbf597fc7beef0ee4),
32 : UINT64_C(0xc6e00bf33da88fc2),UINT64_C(0xd5a79147930aa725),
33 : UINT64_C(0x06ca6351e003826f),UINT64_C(0x142929670a0e6e70),
34 : UINT64_C(0x27b70a8546d22ffc),UINT64_C(0x2e1b21385c26c926),
35 : UINT64_C(0x4d2c6dfc5ac42aed),UINT64_C(0x53380d139d95b3df),
36 : UINT64_C(0x650a73548baf63de),UINT64_C(0x766a0abb3c77b2a8),
37 : UINT64_C(0x81c2c92e47edaee6),UINT64_C(0x92722c851482353b),
38 : UINT64_C(0xa2bfe8a14cf10364),UINT64_C(0xa81a664bbc423001),
39 : UINT64_C(0xc24b8b70d0f89791),UINT64_C(0xc76c51a30654be30),
40 : UINT64_C(0xd192e819d6ef5218),UINT64_C(0xd69906245565a910),
41 : UINT64_C(0xf40e35855771202a),UINT64_C(0x106aa07032bbd1b8),
42 : UINT64_C(0x19a4c116b8d2d0c8),UINT64_C(0x1e376c085141ab53),
43 : UINT64_C(0x2748774cdf8eeb99),UINT64_C(0x34b0bcb5e19b48a8),
44 : UINT64_C(0x391c0cb3c5c95a63),UINT64_C(0x4ed8aa4ae3418acb),
45 : UINT64_C(0x5b9cca4f7763e373),UINT64_C(0x682e6ff3d6b2b8a3),
46 : UINT64_C(0x748f82ee5defb2fc),UINT64_C(0x78a5636f43172f60),
47 : UINT64_C(0x84c87814a1f0ab72),UINT64_C(0x8cc702081a6439ec),
48 : UINT64_C(0x90befffa23631e28),UINT64_C(0xa4506cebde82bde9),
49 : UINT64_C(0xbef9a3f7b2c67915),UINT64_C(0xc67178f2e372532b),
50 : UINT64_C(0xca273eceea26619c),UINT64_C(0xd186b8c721c0c207),
51 : UINT64_C(0xeada7dd6cde0eb1e),UINT64_C(0xf57d4f7fee6ed178),
52 : UINT64_C(0x06f067aa72176fba),UINT64_C(0x0a637dc5a2c898a6),
53 : UINT64_C(0x113f9804bef90dae),UINT64_C(0x1b710b35131c471b),
54 : UINT64_C(0x28db77f523047d84),UINT64_C(0x32caab7b40c72493),
55 : UINT64_C(0x3c9ebe0a15c9bebc),UINT64_C(0x431d67c49c100d4c),
56 : UINT64_C(0x4cc5d4becb3e42b6),UINT64_C(0x597f299cfc657e2a),
57 : UINT64_C(0x5fcb6fab3ad6faec),UINT64_C(0x6c44198c4a475817)
58 : };
59 :
60 : /* Various logical functions */
61 :
62 : #define ROR64c(x,y) \
63 : ( ((((x)&UINT64_C(0xFFFFFFFFFFFFFFFF))>>((uint64_t)(y)&UINT64_C(63))) | \
64 : ((x)<<((uint64_t)(64-((y)&UINT64_C(63))))))&UINT64_C(0xFFFFFFFFFFFFFFFF))
65 :
66 : #define STORE64H(x,y) \
67 : { \
68 : (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255); \
69 : (y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255); \
70 : (y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255); \
71 : (y)[6] = (unsigned char)(((x)>>8)&255); (y)[7] = (unsigned char)((x)&255); \
72 : }
73 :
74 : #define LOAD64H(x,y) \
75 : { \
76 : x = (((uint64_t)((y)[0] & 255))<<56)|(((uint64_t)((y)[1] & 255))<<48) | \
77 : (((uint64_t)((y)[2] & 255))<<40)|(((uint64_t)((y)[3] & 255))<<32) | \
78 : (((uint64_t)((y)[4] & 255))<<24)|(((uint64_t)((y)[5] & 255))<<16) | \
79 : (((uint64_t)((y)[6] & 255))<<8)|(((uint64_t)((y)[7] & 255))); \
80 : }
81 :
82 : #define Ch(x,y,z) (z ^ (x & (y ^ z)))
83 : #define Maj(x,y,z) (((x | y)&z) | (x & y))
84 : #define S(x,n) ROR64c(x,n)
85 : #define R(x,n) (((x)&UINT64_C(0xFFFFFFFFFFFFFFFF))>>((uint64_t)n))
86 : #define Sigma0(x) (S(x,28) ^ S(x,34) ^ S(x,39))
87 : #define Sigma1(x) (S(x,14) ^ S(x,18) ^ S(x,41))
88 : #define Gamma0(x) (S(x,1) ^ S(x,8) ^ R(x,7))
89 : #define Gamma1(x) (S(x,19) ^ S(x,61) ^ R(x,6))
90 : #ifndef MIN
91 : #define MIN(x,y) ( ((x)<(y))?(x):(y) )
92 : #endif
93 :
94 : /* compress 1024-bits */
95 13419 : static int sha512_compress(
96 : SHA512_Context *md,
97 : const unsigned char *buf)
98 : {
99 : uint64_t S[8],W[80],t0,t1;
100 : int i;
101 :
102 : /* copy state into S */
103 120771 : for(i = 0; i < 8; i++)
104 : {
105 107352 : S[i] = md->state[i];
106 : }
107 :
108 : /* copy the state into 1024-bits into W[0..15] */
109 228123 : for(i = 0; i < 16; i++)
110 : {
111 214704 : LOAD64H(W[i],buf + (8*i));
112 : }
113 :
114 : /* fill W[16..79] */
115 872235 : for(i = 16; i < 80; i++)
116 : {
117 858816 : W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16];
118 : }
119 :
120 : /* Compress */
121 : #define RND(a,b,c,d,e,f,g,h,i) \
122 : t0 = h + Sigma1(e) + Ch(e,f,g) + K[i] + W[i]; \
123 : t1 = Sigma0(a) + Maj(a,b,c); \
124 : d += t0; \
125 : h = t0 + t1;
126 :
127 147609 : for(i = 0; i < 80; i += 8)
128 : {
129 134190 : RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],i+0);
130 134190 : RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],i+1);
131 134190 : RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],i+2);
132 134190 : RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],i+3);
133 134190 : RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],i+4);
134 134190 : RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],i+5);
135 134190 : RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],i+6);
136 134190 : RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],i+7);
137 : }
138 :
139 : #undef RND
140 :
141 : /* feedback */
142 120771 : for(i = 0; i < 8; i++)
143 : {
144 107352 : md->state[i] = md->state[i] + S[i];
145 : }
146 :
147 13419 : return 0;
148 : }
149 :
150 : /**
151 : Initialize the hash state
152 : @param md The hash state you wish to initialize
153 : @return 0 if successful
154 : */
155 1903 : int sha512_init(SHA512_Context *md)
156 : {
157 1903 : if(md == NULL)
158 : {
159 0 : return 1;
160 : }
161 :
162 1903 : md->curlen = 0;
163 1903 : md->length = 0;
164 1903 : md->state[0] = UINT64_C(0x6a09e667f3bcc908);
165 1903 : md->state[1] = UINT64_C(0xbb67ae8584caa73b);
166 1903 : md->state[2] = UINT64_C(0x3c6ef372fe94f82b);
167 1903 : md->state[3] = UINT64_C(0xa54ff53a5f1d36f1);
168 1903 : md->state[4] = UINT64_C(0x510e527fade682d1);
169 1903 : md->state[5] = UINT64_C(0x9b05688c2b3e6c1f);
170 1903 : md->state[6] = UINT64_C(0x1f83d9abfb41bd6b);
171 1903 : md->state[7] = UINT64_C(0x5be0cd19137e2179);
172 :
173 1903 : return 0;
174 : }
175 :
176 : /**
177 : Process a block of memory though the hash
178 : @param md The hash state
179 : @param in The data to hash
180 : @param inlen The length of the data (octets)
181 : @return 0 if successful
182 : */
183 1867 : int sha512_update(
184 : SHA512_Context *md,
185 : const unsigned char *in,
186 : size_t inlen)
187 : {
188 : size_t n;
189 : size_t i;
190 : int err;
191 :
192 1867 : if(md == NULL)
193 : {
194 0 : return 1;
195 : }
196 :
197 1867 : if(in == NULL)
198 : {
199 0 : return 1;
200 : }
201 :
202 1867 : if(md->curlen > sizeof(md->buf))
203 : {
204 0 : return 1;
205 : }
206 :
207 15094 : while(inlen > 0)
208 : {
209 13227 : if(md->curlen == 0 && inlen >= 128)
210 : {
211 11400 : if((err = sha512_compress (md,in)) != 0)
212 : {
213 0 : return err;
214 : }
215 11400 : md->length += 128 * 8;
216 11400 : in += 128;
217 11400 : inlen -= 128;
218 : } else {
219 1827 : n = MIN(inlen,(128 - md->curlen));
220 :
221 57452 : for(i = 0; i < n; i++)
222 : {
223 55625 : md->buf[i + md->curlen] = in[i];
224 : }
225 :
226 1827 : md->curlen += n;
227 1827 : in += n;
228 1827 : inlen -= n;
229 :
230 1827 : if(md->curlen == 128)
231 : {
232 0 : if((err = sha512_compress (md,md->buf)) != 0)
233 : {
234 0 : return err;
235 : }
236 0 : md->length += 8*128;
237 0 : md->curlen = 0;
238 : }
239 : }
240 : }
241 1867 : return 0;
242 : }
243 :
244 : /**
245 : Terminate the hash to get the digest
246 : @param md The hash state
247 : @param out [out] The destination of the hash (64 bytes)
248 : @return 0 if successful
249 : */
250 1903 : int sha512_final(
251 : SHA512_Context *md,
252 : unsigned char *out)
253 : {
254 : int i;
255 :
256 1903 : if(md == NULL)
257 : {
258 0 : return 1;
259 : }
260 :
261 1903 : if(out == NULL)
262 : {
263 0 : return 1;
264 : }
265 :
266 1903 : if(md->curlen >= sizeof(md->buf))
267 : {
268 0 : return 1;
269 : }
270 :
271 : /* increase the length of the message */
272 1903 : md->length += md->curlen * UINT64_C(8);
273 :
274 : /* append the '1' bit */
275 1903 : md->buf[md->curlen++] = (unsigned char)0x80;
276 :
277 : /* if the length is currently above 112 bytes we append zeros
278 : * then compress. Then we can fall back to padding zeros and length
279 : * encoding like normal.
280 : */
281 1903 : if(md->curlen > 112)
282 : {
283 1124 : while(md->curlen < 128)
284 : {
285 1008 : md->buf[md->curlen++] = (unsigned char)0;
286 : }
287 116 : sha512_compress(md,md->buf);
288 116 : md->curlen = 0;
289 : }
290 :
291 : /* pad upto 120 bytes of zeroes
292 : * note: that from 112 to 120 is the 64 MSB of the length. We assume that you won't hash
293 : * > 2^64 bits of data... :-)
294 : */
295 186575 : while(md->curlen < 120)
296 : {
297 184672 : md->buf[md->curlen++] = (unsigned char)0;
298 : }
299 :
300 : /* store length */
301 1903 : STORE64H(md->length,md->buf+120);
302 1903 : sha512_compress(md,md->buf);
303 :
304 : /* copy output */
305 17127 : for(i = 0; i < 8; i++)
306 : {
307 15224 : STORE64H(md->state[i],out+(8*i));
308 : }
309 :
310 1903 : return 0;
311 : }
312 :
313 : #if 0
314 : void test(
315 : const unsigned char *message,
316 : size_t message_len,
317 : unsigned char *out)
318 : {
319 : // int ret;
320 : // if ((ret = sha512_init(&ctx))) return ret;
321 : // if ((ret = sha512_update(&ctx, message, message_len))) return ret;
322 : // if ((ret = sha512_final(&ctx, out))) return ret;
323 :
324 : SHA512_Context ctx;
325 : sha512_init(&ctx);
326 : sha512_update(&ctx,message,message_len);
327 : sha512_final(&ctx,out);
328 : }
329 :
330 : int main(void)
331 : {
332 : unsigned char out[SHA512_DIGEST_LENGTH];
333 : const unsigned char message[] = "Hello World";
334 : test(message,sizeof(message),out);
335 :
336 : for(size_t i = 0; i < 64; i++)
337 : {
338 : printf("%02x",out[i]);
339 : }
340 : putchar('\n');
341 :
342 : return(0);
343 : }
344 : #endif
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