Line data Source code
1 : /*
2 : * FIPS-180-2 compliant SHA-384/512 implementation
3 : *
4 : * Copyright (C) 2006-2014, ARM Limited, All Rights Reserved
5 : *
6 : * This file is part of mbed TLS (https://tls.mbed.org)
7 : *
8 : * This program is free software; you can redistribute it and/or modify
9 : * it under the terms of the GNU General Public License as published by
10 : * the Free Software Foundation; either version 2 of the License, or
11 : * (at your option) any later version.
12 : *
13 : * This program is distributed in the hope that it will be useful,
14 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 : * GNU General Public License for more details.
17 : *
18 : * You should have received a copy of the GNU General Public License along
19 : * with this program; if not, write to the Free Software Foundation, Inc.,
20 : * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 : */
22 : /*
23 : * The SHA-512 Secure Hash Standard was published by NIST in 2002.
24 : *
25 : * http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
26 : */
27 :
28 : //#if !defined(MBEDTLS_CONFIG_FILE)
29 : //#include "mbedtls/config.h"
30 : //#else
31 : //#include MBEDTLS_CONFIG_FILE
32 : //#endif
33 :
34 : #if 1 || defined(MBEDTLS_SHA512_C)
35 :
36 : //#include "mbedtls/sha512.h"
37 : #include "sha512.h"
38 :
39 : #if defined(_MSC_VER) || defined(__WATCOMC__)
40 : #define UL64(x) x##ui64
41 : #else
42 : #define UL64(x) x##ULL
43 : #endif
44 :
45 : #include <string.h>
46 :
47 : #if defined(MBEDTLS_SELF_TEST)
48 : #if defined(MBEDTLS_PLATFORM_C)
49 : #include "mbedtls/platform.h"
50 : #else
51 : #include <stdio.h>
52 : #define mbedtls_printf printf
53 : #endif /* MBEDTLS_PLATFORM_C */
54 : #endif /* MBEDTLS_SELF_TEST */
55 :
56 : /* Implementation that should never be optimized out by the compiler */
57 0 : static void mbedtls_zeroize( void *v, size_t n ) {
58 0 : volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
59 0 : }
60 :
61 : #if !defined(MBEDTLS_SHA512_ALT)
62 :
63 : /*
64 : * 64-bit integer manipulation macros (big endian)
65 : */
66 : #ifndef GET_UINT64_BE
67 : #define GET_UINT64_BE(n,b,i) \
68 : { \
69 : (n) = ( (uint64_t) (b)[(i) ] << 56 ) \
70 : | ( (uint64_t) (b)[(i) + 1] << 48 ) \
71 : | ( (uint64_t) (b)[(i) + 2] << 40 ) \
72 : | ( (uint64_t) (b)[(i) + 3] << 32 ) \
73 : | ( (uint64_t) (b)[(i) + 4] << 24 ) \
74 : | ( (uint64_t) (b)[(i) + 5] << 16 ) \
75 : | ( (uint64_t) (b)[(i) + 6] << 8 ) \
76 : | ( (uint64_t) (b)[(i) + 7] ); \
77 : }
78 : #endif /* GET_UINT64_BE */
79 :
80 : #ifndef PUT_UINT64_BE
81 : #define PUT_UINT64_BE(n,b,i) \
82 : { \
83 : (b)[(i) ] = (unsigned char) ( (n) >> 56 ); \
84 : (b)[(i) + 1] = (unsigned char) ( (n) >> 48 ); \
85 : (b)[(i) + 2] = (unsigned char) ( (n) >> 40 ); \
86 : (b)[(i) + 3] = (unsigned char) ( (n) >> 32 ); \
87 : (b)[(i) + 4] = (unsigned char) ( (n) >> 24 ); \
88 : (b)[(i) + 5] = (unsigned char) ( (n) >> 16 ); \
89 : (b)[(i) + 6] = (unsigned char) ( (n) >> 8 ); \
90 : (b)[(i) + 7] = (unsigned char) ( (n) ); \
91 : }
92 : #endif /* PUT_UINT64_BE */
93 :
94 : /*
95 : * Round constants
96 : */
97 : static const uint64_t K[80] =
98 : {
99 : UL64(0x428A2F98D728AE22), UL64(0x7137449123EF65CD),
100 : UL64(0xB5C0FBCFEC4D3B2F), UL64(0xE9B5DBA58189DBBC),
101 : UL64(0x3956C25BF348B538), UL64(0x59F111F1B605D019),
102 : UL64(0x923F82A4AF194F9B), UL64(0xAB1C5ED5DA6D8118),
103 : UL64(0xD807AA98A3030242), UL64(0x12835B0145706FBE),
104 : UL64(0x243185BE4EE4B28C), UL64(0x550C7DC3D5FFB4E2),
105 : UL64(0x72BE5D74F27B896F), UL64(0x80DEB1FE3B1696B1),
106 : UL64(0x9BDC06A725C71235), UL64(0xC19BF174CF692694),
107 : UL64(0xE49B69C19EF14AD2), UL64(0xEFBE4786384F25E3),
108 : UL64(0x0FC19DC68B8CD5B5), UL64(0x240CA1CC77AC9C65),
109 : UL64(0x2DE92C6F592B0275), UL64(0x4A7484AA6EA6E483),
110 : UL64(0x5CB0A9DCBD41FBD4), UL64(0x76F988DA831153B5),
111 : UL64(0x983E5152EE66DFAB), UL64(0xA831C66D2DB43210),
112 : UL64(0xB00327C898FB213F), UL64(0xBF597FC7BEEF0EE4),
113 : UL64(0xC6E00BF33DA88FC2), UL64(0xD5A79147930AA725),
114 : UL64(0x06CA6351E003826F), UL64(0x142929670A0E6E70),
115 : UL64(0x27B70A8546D22FFC), UL64(0x2E1B21385C26C926),
116 : UL64(0x4D2C6DFC5AC42AED), UL64(0x53380D139D95B3DF),
117 : UL64(0x650A73548BAF63DE), UL64(0x766A0ABB3C77B2A8),
118 : UL64(0x81C2C92E47EDAEE6), UL64(0x92722C851482353B),
119 : UL64(0xA2BFE8A14CF10364), UL64(0xA81A664BBC423001),
120 : UL64(0xC24B8B70D0F89791), UL64(0xC76C51A30654BE30),
121 : UL64(0xD192E819D6EF5218), UL64(0xD69906245565A910),
122 : UL64(0xF40E35855771202A), UL64(0x106AA07032BBD1B8),
123 : UL64(0x19A4C116B8D2D0C8), UL64(0x1E376C085141AB53),
124 : UL64(0x2748774CDF8EEB99), UL64(0x34B0BCB5E19B48A8),
125 : UL64(0x391C0CB3C5C95A63), UL64(0x4ED8AA4AE3418ACB),
126 : UL64(0x5B9CCA4F7763E373), UL64(0x682E6FF3D6B2B8A3),
127 : UL64(0x748F82EE5DEFB2FC), UL64(0x78A5636F43172F60),
128 : UL64(0x84C87814A1F0AB72), UL64(0x8CC702081A6439EC),
129 : UL64(0x90BEFFFA23631E28), UL64(0xA4506CEBDE82BDE9),
130 : UL64(0xBEF9A3F7B2C67915), UL64(0xC67178F2E372532B),
131 : UL64(0xCA273ECEEA26619C), UL64(0xD186B8C721C0C207),
132 : UL64(0xEADA7DD6CDE0EB1E), UL64(0xF57D4F7FEE6ED178),
133 : UL64(0x06F067AA72176FBA), UL64(0x0A637DC5A2C898A6),
134 : UL64(0x113F9804BEF90DAE), UL64(0x1B710B35131C471B),
135 : UL64(0x28DB77F523047D84), UL64(0x32CAAB7B40C72493),
136 : UL64(0x3C9EBE0A15C9BEBC), UL64(0x431D67C49C100D4C),
137 : UL64(0x4CC5D4BECB3E42B6), UL64(0x597F299CFC657E2A),
138 : UL64(0x5FCB6FAB3AD6FAEC), UL64(0x6C44198C4A475817)
139 : };
140 :
141 0 : void mbedtls_sha512_init( mbedtls_sha512_context *ctx )
142 : {
143 0 : memset( ctx, 0, sizeof( mbedtls_sha512_context ) );
144 0 : }
145 :
146 0 : void mbedtls_sha512_free( mbedtls_sha512_context *ctx )
147 : {
148 0 : if( ctx == NULL )
149 0 : return;
150 :
151 0 : mbedtls_zeroize( ctx, sizeof( mbedtls_sha512_context ) );
152 : }
153 :
154 0 : void mbedtls_sha512_clone( mbedtls_sha512_context *dst,
155 : const mbedtls_sha512_context *src )
156 : {
157 0 : *dst = *src;
158 0 : }
159 :
160 : /*
161 : * SHA-512 context setup
162 : */
163 0 : void mbedtls_sha512_starts( mbedtls_sha512_context *ctx, int is384 )
164 : {
165 0 : ctx->total[0] = 0;
166 0 : ctx->total[1] = 0;
167 :
168 0 : if( is384 == 0 )
169 : {
170 : /* SHA-512 */
171 0 : ctx->state[0] = UL64(0x6A09E667F3BCC908);
172 0 : ctx->state[1] = UL64(0xBB67AE8584CAA73B);
173 0 : ctx->state[2] = UL64(0x3C6EF372FE94F82B);
174 0 : ctx->state[3] = UL64(0xA54FF53A5F1D36F1);
175 0 : ctx->state[4] = UL64(0x510E527FADE682D1);
176 0 : ctx->state[5] = UL64(0x9B05688C2B3E6C1F);
177 0 : ctx->state[6] = UL64(0x1F83D9ABFB41BD6B);
178 0 : ctx->state[7] = UL64(0x5BE0CD19137E2179);
179 : }
180 : else
181 : {
182 : /* SHA-384 */
183 0 : ctx->state[0] = UL64(0xCBBB9D5DC1059ED8);
184 0 : ctx->state[1] = UL64(0x629A292A367CD507);
185 0 : ctx->state[2] = UL64(0x9159015A3070DD17);
186 0 : ctx->state[3] = UL64(0x152FECD8F70E5939);
187 0 : ctx->state[4] = UL64(0x67332667FFC00B31);
188 0 : ctx->state[5] = UL64(0x8EB44A8768581511);
189 0 : ctx->state[6] = UL64(0xDB0C2E0D64F98FA7);
190 0 : ctx->state[7] = UL64(0x47B5481DBEFA4FA4);
191 : }
192 :
193 0 : ctx->is384 = is384;
194 0 : }
195 :
196 : #if !defined(MBEDTLS_SHA512_PROCESS_ALT)
197 0 : void mbedtls_sha512_process( mbedtls_sha512_context *ctx, const unsigned char data[128] )
198 : {
199 : int i;
200 : uint64_t temp1, temp2, W[80];
201 : uint64_t A, B, C, D, E, F, G, H;
202 :
203 : #define SHR(x,n) (x >> n)
204 : #define ROTR(x,n) (SHR(x,n) | (x << (64 - n)))
205 :
206 : #define S0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x, 7))
207 : #define S1(x) (ROTR(x,19) ^ ROTR(x,61) ^ SHR(x, 6))
208 :
209 : #define S2(x) (ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39))
210 : #define S3(x) (ROTR(x,14) ^ ROTR(x,18) ^ ROTR(x,41))
211 :
212 : #define F0(x,y,z) ((x & y) | (z & (x | y)))
213 : #define F1(x,y,z) (z ^ (x & (y ^ z)))
214 :
215 : #define P(a,b,c,d,e,f,g,h,x,K) \
216 : { \
217 : temp1 = h + S3(e) + F1(e,f,g) + K + x; \
218 : temp2 = S2(a) + F0(a,b,c); \
219 : d += temp1; h = temp1 + temp2; \
220 : }
221 :
222 0 : for( i = 0; i < 16; i++ )
223 : {
224 0 : GET_UINT64_BE( W[i], data, i << 3 );
225 : }
226 :
227 0 : for( ; i < 80; i++ )
228 : {
229 0 : W[i] = S1(W[i - 2]) + W[i - 7] +
230 0 : S0(W[i - 15]) + W[i - 16];
231 : }
232 :
233 0 : A = ctx->state[0];
234 0 : B = ctx->state[1];
235 0 : C = ctx->state[2];
236 0 : D = ctx->state[3];
237 0 : E = ctx->state[4];
238 0 : F = ctx->state[5];
239 0 : G = ctx->state[6];
240 0 : H = ctx->state[7];
241 0 : i = 0;
242 :
243 : do
244 : {
245 0 : P( A, B, C, D, E, F, G, H, W[i], K[i] ); i++;
246 0 : P( H, A, B, C, D, E, F, G, W[i], K[i] ); i++;
247 0 : P( G, H, A, B, C, D, E, F, W[i], K[i] ); i++;
248 0 : P( F, G, H, A, B, C, D, E, W[i], K[i] ); i++;
249 0 : P( E, F, G, H, A, B, C, D, W[i], K[i] ); i++;
250 0 : P( D, E, F, G, H, A, B, C, W[i], K[i] ); i++;
251 0 : P( C, D, E, F, G, H, A, B, W[i], K[i] ); i++;
252 0 : P( B, C, D, E, F, G, H, A, W[i], K[i] ); i++;
253 : }
254 0 : while( i < 80 );
255 :
256 0 : ctx->state[0] += A;
257 0 : ctx->state[1] += B;
258 0 : ctx->state[2] += C;
259 0 : ctx->state[3] += D;
260 0 : ctx->state[4] += E;
261 0 : ctx->state[5] += F;
262 0 : ctx->state[6] += G;
263 0 : ctx->state[7] += H;
264 0 : }
265 : #endif /* !MBEDTLS_SHA512_PROCESS_ALT */
266 :
267 : /*
268 : * SHA-512 process buffer
269 : */
270 0 : void mbedtls_sha512_update( mbedtls_sha512_context *ctx, const unsigned char *input,
271 : size_t ilen )
272 : {
273 : size_t fill;
274 : unsigned int left;
275 :
276 0 : if( ilen == 0 )
277 0 : return;
278 :
279 0 : left = (unsigned int) (ctx->total[0] & 0x7F);
280 0 : fill = 128 - left;
281 :
282 0 : ctx->total[0] += (uint64_t) ilen;
283 :
284 0 : if( ctx->total[0] < (uint64_t) ilen )
285 0 : ctx->total[1]++;
286 :
287 0 : if( left && ilen >= fill )
288 : {
289 0 : memcpy( (void *) (ctx->buffer + left), input, fill );
290 0 : mbedtls_sha512_process( ctx, ctx->buffer );
291 0 : input += fill;
292 0 : ilen -= fill;
293 0 : left = 0;
294 : }
295 :
296 0 : while( ilen >= 128 )
297 : {
298 0 : mbedtls_sha512_process( ctx, input );
299 0 : input += 128;
300 0 : ilen -= 128;
301 : }
302 :
303 0 : if( ilen > 0 )
304 0 : memcpy( (void *) (ctx->buffer + left), input, ilen );
305 : }
306 :
307 : static const unsigned char sha512_padding[128] =
308 : {
309 : 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
310 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
311 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
312 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
313 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
314 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
315 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
316 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
317 : };
318 :
319 : /*
320 : * SHA-512 final digest
321 : */
322 0 : void mbedtls_sha512_finish( mbedtls_sha512_context *ctx, unsigned char output[64] )
323 : {
324 : size_t last, padn;
325 : uint64_t high, low;
326 : unsigned char msglen[16];
327 :
328 0 : high = ( ctx->total[0] >> 61 )
329 0 : | ( ctx->total[1] << 3 );
330 0 : low = ( ctx->total[0] << 3 );
331 :
332 0 : PUT_UINT64_BE( high, msglen, 0 );
333 0 : PUT_UINT64_BE( low, msglen, 8 );
334 :
335 0 : last = (size_t)( ctx->total[0] & 0x7F );
336 0 : padn = ( last < 112 ) ? ( 112 - last ) : ( 240 - last );
337 :
338 0 : mbedtls_sha512_update( ctx, sha512_padding, padn );
339 0 : mbedtls_sha512_update( ctx, msglen, 16 );
340 :
341 0 : PUT_UINT64_BE( ctx->state[0], output, 0 );
342 0 : PUT_UINT64_BE( ctx->state[1], output, 8 );
343 0 : PUT_UINT64_BE( ctx->state[2], output, 16 );
344 0 : PUT_UINT64_BE( ctx->state[3], output, 24 );
345 0 : PUT_UINT64_BE( ctx->state[4], output, 32 );
346 0 : PUT_UINT64_BE( ctx->state[5], output, 40 );
347 :
348 0 : if( ctx->is384 == 0 )
349 : {
350 0 : PUT_UINT64_BE( ctx->state[6], output, 48 );
351 0 : PUT_UINT64_BE( ctx->state[7], output, 56 );
352 : }
353 0 : }
354 :
355 : #endif /* !MBEDTLS_SHA512_ALT */
356 :
357 : /*
358 : * output = SHA-512( input buffer )
359 : */
360 0 : void mbedtls_sha512( const unsigned char *input, size_t ilen,
361 : unsigned char output[64], int is384 )
362 : {
363 : mbedtls_sha512_context ctx;
364 :
365 0 : mbedtls_sha512_init( &ctx );
366 0 : mbedtls_sha512_starts( &ctx, is384 );
367 0 : mbedtls_sha512_update( &ctx, input, ilen );
368 0 : mbedtls_sha512_finish( &ctx, output );
369 0 : mbedtls_sha512_free( &ctx );
370 0 : }
371 :
372 : #if defined(MBEDTLS_SELF_TEST)
373 :
374 : /*
375 : * FIPS-180-2 test vectors
376 : */
377 : static const unsigned char sha512_test_buf[3][113] =
378 : {
379 : { "abc" },
380 : { "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"
381 : "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu" },
382 : { "" }
383 : };
384 :
385 : static const int sha512_test_buflen[3] =
386 : {
387 : 3, 112, 1000
388 : };
389 :
390 : static const unsigned char sha512_test_sum[6][64] =
391 : {
392 : /*
393 : * SHA-384 test vectors
394 : */
395 : { 0xCB, 0x00, 0x75, 0x3F, 0x45, 0xA3, 0x5E, 0x8B,
396 : 0xB5, 0xA0, 0x3D, 0x69, 0x9A, 0xC6, 0x50, 0x07,
397 : 0x27, 0x2C, 0x32, 0xAB, 0x0E, 0xDE, 0xD1, 0x63,
398 : 0x1A, 0x8B, 0x60, 0x5A, 0x43, 0xFF, 0x5B, 0xED,
399 : 0x80, 0x86, 0x07, 0x2B, 0xA1, 0xE7, 0xCC, 0x23,
400 : 0x58, 0xBA, 0xEC, 0xA1, 0x34, 0xC8, 0x25, 0xA7 },
401 : { 0x09, 0x33, 0x0C, 0x33, 0xF7, 0x11, 0x47, 0xE8,
402 : 0x3D, 0x19, 0x2F, 0xC7, 0x82, 0xCD, 0x1B, 0x47,
403 : 0x53, 0x11, 0x1B, 0x17, 0x3B, 0x3B, 0x05, 0xD2,
404 : 0x2F, 0xA0, 0x80, 0x86, 0xE3, 0xB0, 0xF7, 0x12,
405 : 0xFC, 0xC7, 0xC7, 0x1A, 0x55, 0x7E, 0x2D, 0xB9,
406 : 0x66, 0xC3, 0xE9, 0xFA, 0x91, 0x74, 0x60, 0x39 },
407 : { 0x9D, 0x0E, 0x18, 0x09, 0x71, 0x64, 0x74, 0xCB,
408 : 0x08, 0x6E, 0x83, 0x4E, 0x31, 0x0A, 0x4A, 0x1C,
409 : 0xED, 0x14, 0x9E, 0x9C, 0x00, 0xF2, 0x48, 0x52,
410 : 0x79, 0x72, 0xCE, 0xC5, 0x70, 0x4C, 0x2A, 0x5B,
411 : 0x07, 0xB8, 0xB3, 0xDC, 0x38, 0xEC, 0xC4, 0xEB,
412 : 0xAE, 0x97, 0xDD, 0xD8, 0x7F, 0x3D, 0x89, 0x85 },
413 :
414 : /*
415 : * SHA-512 test vectors
416 : */
417 : { 0xDD, 0xAF, 0x35, 0xA1, 0x93, 0x61, 0x7A, 0xBA,
418 : 0xCC, 0x41, 0x73, 0x49, 0xAE, 0x20, 0x41, 0x31,
419 : 0x12, 0xE6, 0xFA, 0x4E, 0x89, 0xA9, 0x7E, 0xA2,
420 : 0x0A, 0x9E, 0xEE, 0xE6, 0x4B, 0x55, 0xD3, 0x9A,
421 : 0x21, 0x92, 0x99, 0x2A, 0x27, 0x4F, 0xC1, 0xA8,
422 : 0x36, 0xBA, 0x3C, 0x23, 0xA3, 0xFE, 0xEB, 0xBD,
423 : 0x45, 0x4D, 0x44, 0x23, 0x64, 0x3C, 0xE8, 0x0E,
424 : 0x2A, 0x9A, 0xC9, 0x4F, 0xA5, 0x4C, 0xA4, 0x9F },
425 : { 0x8E, 0x95, 0x9B, 0x75, 0xDA, 0xE3, 0x13, 0xDA,
426 : 0x8C, 0xF4, 0xF7, 0x28, 0x14, 0xFC, 0x14, 0x3F,
427 : 0x8F, 0x77, 0x79, 0xC6, 0xEB, 0x9F, 0x7F, 0xA1,
428 : 0x72, 0x99, 0xAE, 0xAD, 0xB6, 0x88, 0x90, 0x18,
429 : 0x50, 0x1D, 0x28, 0x9E, 0x49, 0x00, 0xF7, 0xE4,
430 : 0x33, 0x1B, 0x99, 0xDE, 0xC4, 0xB5, 0x43, 0x3A,
431 : 0xC7, 0xD3, 0x29, 0xEE, 0xB6, 0xDD, 0x26, 0x54,
432 : 0x5E, 0x96, 0xE5, 0x5B, 0x87, 0x4B, 0xE9, 0x09 },
433 : { 0xE7, 0x18, 0x48, 0x3D, 0x0C, 0xE7, 0x69, 0x64,
434 : 0x4E, 0x2E, 0x42, 0xC7, 0xBC, 0x15, 0xB4, 0x63,
435 : 0x8E, 0x1F, 0x98, 0xB1, 0x3B, 0x20, 0x44, 0x28,
436 : 0x56, 0x32, 0xA8, 0x03, 0xAF, 0xA9, 0x73, 0xEB,
437 : 0xDE, 0x0F, 0xF2, 0x44, 0x87, 0x7E, 0xA6, 0x0A,
438 : 0x4C, 0xB0, 0x43, 0x2C, 0xE5, 0x77, 0xC3, 0x1B,
439 : 0xEB, 0x00, 0x9C, 0x5C, 0x2C, 0x49, 0xAA, 0x2E,
440 : 0x4E, 0xAD, 0xB2, 0x17, 0xAD, 0x8C, 0xC0, 0x9B }
441 : };
442 :
443 : /*
444 : * Checkup routine
445 : */
446 : int mbedtls_sha512_self_test( int verbose )
447 : {
448 : int i, j, k, buflen, ret = 0;
449 : unsigned char buf[1024];
450 : unsigned char sha512sum[64];
451 : mbedtls_sha512_context ctx;
452 :
453 : mbedtls_sha512_init( &ctx );
454 :
455 : for( i = 0; i < 6; i++ )
456 : {
457 : j = i % 3;
458 : k = i < 3;
459 :
460 : if( verbose != 0 )
461 : mbedtls_printf( " SHA-%d test #%d: ", 512 - k * 128, j + 1 );
462 :
463 : mbedtls_sha512_starts( &ctx, k );
464 :
465 : if( j == 2 )
466 : {
467 : memset( buf, 'a', buflen = 1000 );
468 :
469 : for( j = 0; j < 1000; j++ )
470 : mbedtls_sha512_update( &ctx, buf, buflen );
471 : }
472 : else
473 : mbedtls_sha512_update( &ctx, sha512_test_buf[j],
474 : sha512_test_buflen[j] );
475 :
476 : mbedtls_sha512_finish( &ctx, sha512sum );
477 :
478 : if( memcmp( sha512sum, sha512_test_sum[i], 64 - k * 16 ) != 0 )
479 : {
480 : if( verbose != 0 )
481 : mbedtls_printf( "failed\n" );
482 :
483 : ret = 1;
484 : goto exit;
485 : }
486 :
487 : if( verbose != 0 )
488 : mbedtls_printf( "passed\n" );
489 : }
490 :
491 : if( verbose != 0 )
492 : mbedtls_printf( "\n" );
493 :
494 : exit:
495 : mbedtls_sha512_free( &ctx );
496 :
497 : return( ret );
498 : }
499 :
500 : #endif /* MBEDTLS_SELF_TEST */
501 :
502 : #endif /* MBEDTLS_SHA512_C */
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