Line data Source code
1 : /************************* sha384-512.c ************************/
2 : /***************** See RFC 6234 for details. *******************/
3 : /* Copyright (c) 2011 IETF Trust and the persons identified as */
4 : /* authors of the code. All rights reserved. */
5 : /* See sha.h for terms of use and redistribution. */
6 :
7 : /*
8 : * Description:
9 : * This file implements the Secure Hash Algorithms SHA-384 and
10 : * SHA-512 as defined in the U.S. National Institute of Standards
11 : * and Technology Federal Information Processing Standards
12 : * Publication (FIPS PUB) 180-3 published in October 2008
13 : * and formerly defined in its predecessors, FIPS PUB 180-1
14 : * and FIP PUB 180-2.
15 : *
16 : * A combined document showing all algorithms is available at
17 : * http://csrc.nist.gov/publications/fips/
18 : * fips180-3/fips180-3_final.pdf
19 : *
20 : * The SHA-384 and SHA-512 algorithms produce 384-bit and 512-bit
21 : * message digests for a given data stream. It should take about
22 : * 2**n steps to find a message with the same digest as a given
23 : * message and 2**(n/2) to find any two messages with the same
24 : * digest, when n is the digest size in bits. Therefore, this
25 : * algorithm can serve as a means of providing a
26 : * "fingerprint" for a message.
27 : *
28 : * Portability Issues:
29 : * SHA-384 and SHA-512 are defined in terms of 64-bit "words",
30 : * but if USE_32BIT_ONLY is #defined, this code is implemented in
31 : * terms of 32-bit "words". This code uses <stdint.h> (included
32 : * via "sha.h") to define the 64-, 32- and 8-bit unsigned integer
33 : * types. If your C compiler does not support 64-bit unsigned
34 : * integers and you do not #define USE_32BIT_ONLY, this code is
35 : * not appropriate.
36 : *
37 : * Caveats:
38 : * SHA-384 and SHA-512 are designed to work with messages less
39 : * than 2^128 bits long. This implementation uses SHA384/512Input()
40 : * to hash the bits that are a multiple of the size of an 8-bit
41 : * octet, and then optionally uses SHA384/256FinalBits()
42 : * to hash the final few bits of the input.
43 : *
44 : */
45 :
46 : #include "sha.h"
47 :
48 : #ifdef USE_32BIT_ONLY
49 : /*
50 : * Define 64-bit arithmetic in terms of 32-bit arithmetic.
51 : * Each 64-bit number is represented in a 2-word array.
52 : * All macros are defined such that the result is the last parameter.
53 : */
54 :
55 : /*
56 : * Define shift, rotate left, and rotate right functions
57 : */
58 : #define SHA512_SHR(bits, word, ret) ( \
59 : /* (((uint64_t)((word))) >> (bits)) */ \
60 : (ret)[0] = (((bits) < 32) && ((bits) >= 0)) ? \
61 : ((word)[0] >> (bits)) : 0, \
62 : (ret)[1] = ((bits) > 32) ? ((word)[0] >> ((bits) - 32)) : \
63 : ((bits) == 32) ? (word)[0] : \
64 : ((bits) >= 0) ? \
65 : (((word)[0] << (32 - (bits))) | \
66 : ((word)[1] >> (bits))) : 0 )
67 :
68 : #define SHA512_SHL(bits, word, ret) ( \
69 : /* (((uint64_t)(word)) << (bits)) */ \
70 : (ret)[0] = ((bits) > 32) ? ((word)[1] << ((bits) - 32)) : \
71 : ((bits) == 32) ? (word)[1] : \
72 : ((bits) >= 0) ? \
73 : (((word)[0] << (bits)) | \
74 : ((word)[1] >> (32 - (bits)))) : \
75 : 0, \
76 : (ret)[1] = (((bits) < 32) && ((bits) >= 0)) ? \
77 : ((word)[1] << (bits)) : 0 )
78 :
79 : /*
80 : * Define 64-bit OR
81 : */
82 : #define SHA512_OR(word1, word2, ret) ( \
83 : (ret)[0] = (word1)[0] | (word2)[0], \
84 : (ret)[1] = (word1)[1] | (word2)[1] )
85 :
86 : /*
87 : * Define 64-bit XOR
88 : */
89 : #define SHA512_XOR(word1, word2, ret) ( \
90 : (ret)[0] = (word1)[0] ^ (word2)[0], \
91 : (ret)[1] = (word1)[1] ^ (word2)[1] )
92 :
93 : /*
94 : * Define 64-bit AND
95 : */
96 : #define SHA512_AND(word1, word2, ret) ( \
97 : (ret)[0] = (word1)[0] & (word2)[0], \
98 : (ret)[1] = (word1)[1] & (word2)[1] )
99 :
100 : /*
101 : * Define 64-bit TILDA
102 : */
103 : #define SHA512_TILDA(word, ret) \
104 : ( (ret)[0] = ~(word)[0], (ret)[1] = ~(word)[1] )
105 :
106 : /*
107 : * Define 64-bit ADD
108 : */
109 : #define SHA512_ADD(word1, word2, ret) ( \
110 : (ret)[1] = (word1)[1], (ret)[1] += (word2)[1], \
111 : (ret)[0] = (word1)[0] + (word2)[0] + ((ret)[1] < (word1)[1]) )
112 :
113 : /*
114 : * Add the 4word value in word2 to word1.
115 : */
116 : static uint32_t ADDTO4_temp, ADDTO4_temp2;
117 : #define SHA512_ADDTO4(word1, word2) ( \
118 : ADDTO4_temp = (word1)[3], \
119 : (word1)[3] += (word2)[3], \
120 : ADDTO4_temp2 = (word1)[2], \
121 : (word1)[2] += (word2)[2] + ((word1)[3] < ADDTO4_temp), \
122 : ADDTO4_temp = (word1)[1], \
123 : (word1)[1] += (word2)[1] + ((word1)[2] < ADDTO4_temp2), \
124 : (word1)[0] += (word2)[0] + ((word1)[1] < ADDTO4_temp) )
125 :
126 : /*
127 : * Add the 2word value in word2 to word1.
128 : */
129 : static uint32_t ADDTO2_temp;
130 : #define SHA512_ADDTO2(word1, word2) ( \
131 : ADDTO2_temp = (word1)[1], \
132 : (word1)[1] += (word2)[1], \
133 : (word1)[0] += (word2)[0] + ((word1)[1] < ADDTO2_temp) )
134 :
135 : /*
136 : * SHA rotate ((word >> bits) | (word << (64-bits)))
137 : */
138 : static uint32_t ROTR_temp1[2], ROTR_temp2[2];
139 : #define SHA512_ROTR(bits, word, ret) ( \
140 : SHA512_SHR((bits), (word), ROTR_temp1), \
141 : SHA512_SHL(64-(bits), (word), ROTR_temp2), \
142 : SHA512_OR(ROTR_temp1, ROTR_temp2, (ret)) )
143 :
144 : /*
145 : * Define the SHA SIGMA and sigma macros
146 : *
147 : * SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word)
148 : */
149 : static uint32_t SIGMA0_temp1[2], SIGMA0_temp2[2],
150 : SIGMA0_temp3[2], SIGMA0_temp4[2];
151 : #define SHA512_SIGMA0(word, ret) ( \
152 : SHA512_ROTR(28, (word), SIGMA0_temp1), \
153 : SHA512_ROTR(34, (word), SIGMA0_temp2), \
154 : SHA512_ROTR(39, (word), SIGMA0_temp3), \
155 : SHA512_XOR(SIGMA0_temp2, SIGMA0_temp3, SIGMA0_temp4), \
156 : SHA512_XOR(SIGMA0_temp1, SIGMA0_temp4, (ret)) )
157 :
158 : /*
159 : * SHA512_ROTR(14,word) ^ SHA512_ROTR(18,word) ^ SHA512_ROTR(41,word)
160 : */
161 : static uint32_t SIGMA1_temp1[2], SIGMA1_temp2[2],
162 : SIGMA1_temp3[2], SIGMA1_temp4[2];
163 : #define SHA512_SIGMA1(word, ret) ( \
164 : SHA512_ROTR(14, (word), SIGMA1_temp1), \
165 : SHA512_ROTR(18, (word), SIGMA1_temp2), \
166 : SHA512_ROTR(41, (word), SIGMA1_temp3), \
167 : SHA512_XOR(SIGMA1_temp2, SIGMA1_temp3, SIGMA1_temp4), \
168 : SHA512_XOR(SIGMA1_temp1, SIGMA1_temp4, (ret)) )
169 :
170 : /*
171 : * (SHA512_ROTR( 1,word) ^ SHA512_ROTR( 8,word) ^ SHA512_SHR( 7,word))
172 : */
173 : static uint32_t sigma0_temp1[2], sigma0_temp2[2],
174 : sigma0_temp3[2], sigma0_temp4[2];
175 : #define SHA512_sigma0(word, ret) ( \
176 : SHA512_ROTR( 1, (word), sigma0_temp1), \
177 : SHA512_ROTR( 8, (word), sigma0_temp2), \
178 : SHA512_SHR( 7, (word), sigma0_temp3), \
179 : SHA512_XOR(sigma0_temp2, sigma0_temp3, sigma0_temp4), \
180 : SHA512_XOR(sigma0_temp1, sigma0_temp4, (ret)) )
181 :
182 : /*
183 : * (SHA512_ROTR(19,word) ^ SHA512_ROTR(61,word) ^ SHA512_SHR( 6,word))
184 : */
185 : static uint32_t sigma1_temp1[2], sigma1_temp2[2],
186 : sigma1_temp3[2], sigma1_temp4[2];
187 : #define SHA512_sigma1(word, ret) ( \
188 : SHA512_ROTR(19, (word), sigma1_temp1), \
189 : SHA512_ROTR(61, (word), sigma1_temp2), \
190 : SHA512_SHR( 6, (word), sigma1_temp3), \
191 : SHA512_XOR(sigma1_temp2, sigma1_temp3, sigma1_temp4), \
192 : SHA512_XOR(sigma1_temp1, sigma1_temp4, (ret)) )
193 :
194 : #ifndef USE_MODIFIED_MACROS
195 : /*
196 : * These definitions are the ones used in FIPS 180-3, section 4.1.3
197 : * Ch(x,y,z) ((x & y) ^ (~x & z))
198 : */
199 : static uint32_t Ch_temp1[2], Ch_temp2[2], Ch_temp3[2];
200 : #define SHA_Ch(x, y, z, ret) ( \
201 : SHA512_AND(x, y, Ch_temp1), \
202 : SHA512_TILDA(x, Ch_temp2), \
203 : SHA512_AND(Ch_temp2, z, Ch_temp3), \
204 : SHA512_XOR(Ch_temp1, Ch_temp3, (ret)) )
205 :
206 : /*
207 : * Maj(x,y,z) (((x)&(y)) ^ ((x)&(z)) ^ ((y)&(z)))
208 : */
209 : static uint32_t Maj_temp1[2], Maj_temp2[2],
210 : Maj_temp3[2], Maj_temp4[2];
211 : #define SHA_Maj(x, y, z, ret) ( \
212 : SHA512_AND(x, y, Maj_temp1), \
213 : SHA512_AND(x, z, Maj_temp2), \
214 : SHA512_AND(y, z, Maj_temp3), \
215 : SHA512_XOR(Maj_temp2, Maj_temp3, Maj_temp4), \
216 : SHA512_XOR(Maj_temp1, Maj_temp4, (ret)) )
217 : #else /* !USE_MODIFIED_MACROS */
218 : /*
219 : * These definitions are potentially faster equivalents for the ones
220 : * used in FIPS 180-3, section 4.1.3.
221 : * ((x & y) ^ (~x & z)) becomes
222 : * ((x & (y ^ z)) ^ z)
223 : */
224 : #define SHA_Ch(x, y, z, ret) ( \
225 : (ret)[0] = (((x)[0] & ((y)[0] ^ (z)[0])) ^ (z)[0]), \
226 : (ret)[1] = (((x)[1] & ((y)[1] ^ (z)[1])) ^ (z)[1]) )
227 :
228 : /*
229 : * ((x & y) ^ (x & z) ^ (y & z)) becomes
230 : * ((x & (y | z)) | (y & z))
231 : */
232 : #define SHA_Maj(x, y, z, ret) ( \
233 : ret[0] = (((x)[0] & ((y)[0] | (z)[0])) | ((y)[0] & (z)[0])), \
234 : ret[1] = (((x)[1] & ((y)[1] | (z)[1])) | ((y)[1] & (z)[1])) )
235 : #endif /* USE_MODIFIED_MACROS */
236 :
237 : /*
238 : * Add "length" to the length.
239 : * Set Corrupted when overflow has occurred.
240 : */
241 : static uint32_t addTemp[4] = { 0, 0, 0, 0 };
242 : #define SHA384_512AddLength(context, length) ( \
243 : addTemp[3] = (length), SHA512_ADDTO4((context)->Length, addTemp), \
244 : (context)->Corrupted = (((context)->Length[3] < (length)) && \
245 : ((context)->Length[2] == 0) && ((context)->Length[1] == 0) && \
246 : ((context)->Length[0] == 0)) ? shaInputTooLong : \
247 : (context)->Corrupted )
248 :
249 : /* Local Function Prototypes */
250 : static int SHA384_512Reset(SHA512Context *context,
251 : uint32_t H0[SHA512HashSize/4]);
252 : static void SHA384_512ProcessMessageBlock(SHA512Context *context);
253 : static void SHA384_512Finalize(SHA512Context *context,
254 : uint8_t Pad_Byte);
255 : static void SHA384_512PadMessage(SHA512Context *context,
256 : uint8_t Pad_Byte);
257 : static int SHA384_512ResultN( SHA512Context *context,
258 : uint8_t Message_Digest[ ], int HashSize);
259 :
260 : /* Initial Hash Values: FIPS 180-3 sections 5.3.4 and 5.3.5 */
261 : static uint32_t SHA384_H0[SHA512HashSize/4] = {
262 : 0xCBBB9D5D, 0xC1059ED8, 0x629A292A, 0x367CD507, 0x9159015A,
263 : 0x3070DD17, 0x152FECD8, 0xF70E5939, 0x67332667, 0xFFC00B31,
264 : 0x8EB44A87, 0x68581511, 0xDB0C2E0D, 0x64F98FA7, 0x47B5481D,
265 : 0xBEFA4FA4
266 : };
267 : static uint32_t SHA512_H0[SHA512HashSize/4] = {
268 : 0x6A09E667, 0xF3BCC908, 0xBB67AE85, 0x84CAA73B, 0x3C6EF372,
269 : 0xFE94F82B, 0xA54FF53A, 0x5F1D36F1, 0x510E527F, 0xADE682D1,
270 : 0x9B05688C, 0x2B3E6C1F, 0x1F83D9AB, 0xFB41BD6B, 0x5BE0CD19,
271 : 0x137E2179
272 : };
273 :
274 : #else /* !USE_32BIT_ONLY */
275 :
276 : #include "sha-private.h"
277 :
278 : /* Define the SHA shift, rotate left and rotate right macros */
279 : #define SHA512_SHR(bits,word) (((uint64_t)(word)) >> (bits))
280 : #define SHA512_ROTR(bits,word) ((((uint64_t)(word)) >> (bits)) | \
281 : (((uint64_t)(word)) << (64-(bits))))
282 :
283 : /*
284 : * Define the SHA SIGMA and sigma macros
285 : *
286 : * SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word)
287 : */
288 : #define SHA512_SIGMA0(word) \
289 : (SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word))
290 : #define SHA512_SIGMA1(word) \
291 : (SHA512_ROTR(14,word) ^ SHA512_ROTR(18,word) ^ SHA512_ROTR(41,word))
292 : #define SHA512_sigma0(word) \
293 : (SHA512_ROTR( 1,word) ^ SHA512_ROTR( 8,word) ^ SHA512_SHR( 7,word))
294 : #define SHA512_sigma1(word) \
295 : (SHA512_ROTR(19,word) ^ SHA512_ROTR(61,word) ^ SHA512_SHR( 6,word))
296 :
297 : /*
298 : * Add "length" to the length.
299 : * Set Corrupted when overflow has occurred.
300 : */
301 : static uint64_t addTemp;
302 : #define SHA384_512AddLength(context, length) \
303 : (addTemp = context->Length_Low, context->Corrupted = \
304 : ((context->Length_Low += length) < addTemp) && \
305 : (++context->Length_High == 0) ? shaInputTooLong : \
306 : (context)->Corrupted)
307 :
308 : /* Local Function Prototypes */
309 : static int SHA384_512Reset(SHA512Context *context,
310 : uint64_t H0[SHA512HashSize/8]);
311 : static void SHA384_512ProcessMessageBlock(SHA512Context *context);
312 : static void SHA384_512Finalize(SHA512Context *context,
313 : uint8_t Pad_Byte);
314 : static void SHA384_512PadMessage(SHA512Context *context,
315 : uint8_t Pad_Byte);
316 : static int SHA384_512ResultN(SHA512Context *context,
317 : uint8_t Message_Digest[ ], int HashSize);
318 :
319 : /* Initial Hash Values: FIPS 180-3 sections 5.3.4 and 5.3.5 */
320 : static uint64_t SHA384_H0[ ] = {
321 : 0xCBBB9D5DC1059ED8ll, 0x629A292A367CD507ll, 0x9159015A3070DD17ll,
322 : 0x152FECD8F70E5939ll, 0x67332667FFC00B31ll, 0x8EB44A8768581511ll,
323 : 0xDB0C2E0D64F98FA7ll, 0x47B5481DBEFA4FA4ll
324 : };
325 : static uint64_t SHA512_H0[ ] = {
326 : 0x6A09E667F3BCC908ll, 0xBB67AE8584CAA73Bll, 0x3C6EF372FE94F82Bll,
327 : 0xA54FF53A5F1D36F1ll, 0x510E527FADE682D1ll, 0x9B05688C2B3E6C1Fll,
328 : 0x1F83D9ABFB41BD6Bll, 0x5BE0CD19137E2179ll
329 : };
330 :
331 : #endif /* USE_32BIT_ONLY */
332 :
333 : /*
334 : * SHA384Reset
335 : *
336 : * Description:
337 : * This function will initialize the SHA384Context in preparation
338 : * for computing a new SHA384 message digest.
339 : *
340 : * Parameters:
341 : * context: [in/out]
342 : * The context to reset.
343 : *
344 : * Returns:
345 : * sha Error Code.
346 : *
347 : */
348 1 : int SHA384Reset(SHA384Context *context)
349 : {
350 1 : return SHA384_512Reset(context, SHA384_H0);
351 : }
352 :
353 : /*
354 : * SHA384Input
355 : *
356 : * Description:
357 : * This function accepts an array of octets as the next portion
358 : * of the message.
359 : *
360 : * Parameters:
361 : * context: [in/out]
362 : * The SHA context to update.
363 : * message_array[ ]: [in]
364 : * An array of octets representing the next portion of
365 : * the message.
366 : * length: [in]
367 : * The length of the message in message_array.
368 : *
369 : * Returns:
370 : * sha Error Code.
371 : *
372 : */
373 1 : int SHA384Input(SHA384Context *context,
374 : const uint8_t *message_array, unsigned int length)
375 : {
376 1 : return SHA512Input(context, message_array, length);
377 : }
378 :
379 : /*
380 : * SHA384FinalBits
381 : *
382 : * Description:
383 : * This function will add in any final bits of the message.
384 : *
385 : * Parameters:
386 : * context: [in/out]
387 : * The SHA context to update.
388 : * message_bits: [in]
389 : * The final bits of the message, in the upper portion of the
390 : * byte. (Use 0b###00000 instead of 0b00000### to input the
391 : * three bits ###.)
392 : * length: [in]
393 : * The number of bits in message_bits, between 1 and 7.
394 : *
395 : * Returns:
396 : * sha Error Code.
397 : *
398 : */
399 0 : int SHA384FinalBits(SHA384Context *context,
400 : uint8_t message_bits, unsigned int length)
401 : {
402 0 : return SHA512FinalBits(context, message_bits, length);
403 : }
404 :
405 : /*
406 : * SHA384Result
407 : *
408 : * Description:
409 : * This function will return the 384-bit message digest
410 : * into the Message_Digest array provided by the caller.
411 : * NOTE:
412 : * The first octet of hash is stored in the element with index 0,
413 : * the last octet of hash in the element with index 47.
414 : *
415 : * Parameters:
416 : * context: [in/out]
417 : * The context to use to calculate the SHA hash.
418 : * Message_Digest[ ]: [out]
419 : * Where the digest is returned.
420 : *
421 : * Returns:
422 : * sha Error Code.
423 : *
424 : */
425 1 : int SHA384Result(SHA384Context *context,
426 : uint8_t Message_Digest[SHA384HashSize])
427 : {
428 1 : return SHA384_512ResultN(context, Message_Digest, SHA384HashSize);
429 : }
430 :
431 : /*
432 : * SHA512Reset
433 : *
434 : * Description:
435 : * This function will initialize the SHA512Context in preparation
436 : * for computing a new SHA512 message digest.
437 : *
438 : * Parameters:
439 : * context: [in/out]
440 : * The context to reset.
441 : *
442 : * Returns:
443 : * sha Error Code.
444 : *
445 : */
446 677 : int SHA512Reset(SHA512Context *context)
447 : {
448 677 : return SHA384_512Reset(context, SHA512_H0);
449 : }
450 :
451 : /*
452 : * SHA512Input
453 : *
454 : * Description:
455 : * This function accepts an array of octets as the next portion
456 : * of the message.
457 : *
458 : * Parameters:
459 : * context: [in/out]
460 : * The SHA context to update.
461 : * message_array[ ]: [in]
462 : * An array of octets representing the next portion of
463 : * the message.
464 : * length: [in]
465 : * The length of the message in message_array.
466 : *
467 : * Returns:
468 : * sha Error Code.
469 : *
470 : */
471 840 : int SHA512Input(SHA512Context *context,
472 : const uint8_t *message_array,
473 : unsigned int length)
474 : {
475 840 : if (!context) return shaNull;
476 840 : if (!length) return shaSuccess;
477 840 : if (!message_array) return shaNull;
478 840 : if (context->Computed) return context->Corrupted = shaStateError;
479 840 : if (context->Corrupted) return context->Corrupted;
480 :
481 26626 : while (length--) {
482 25786 : context->Message_Block[context->Message_Block_Index++] =
483 25786 : *message_array;
484 :
485 25786 : if ((SHA384_512AddLength(context, 8) == shaSuccess) &&
486 : (context->Message_Block_Index == SHA512_Message_Block_Size))
487 162 : SHA384_512ProcessMessageBlock(context);
488 :
489 25786 : message_array++;
490 : }
491 :
492 840 : return context->Corrupted;
493 : }
494 :
495 : /*
496 : * SHA512FinalBits
497 : *
498 : * Description:
499 : * This function will add in any final bits of the message.
500 : *
501 : * Parameters:
502 : * context: [in/out]
503 : * The SHA context to update.
504 : * message_bits: [in]
505 : * The final bits of the message, in the upper portion of the
506 : * byte. (Use 0b###00000 instead of 0b00000### to input the
507 : * three bits ###.)
508 : * length: [in]
509 : * The number of bits in message_bits, between 1 and 7.
510 : *
511 : * Returns:
512 : * sha Error Code.
513 : *
514 : */
515 0 : int SHA512FinalBits(SHA512Context *context,
516 : uint8_t message_bits, unsigned int length)
517 : {
518 : static uint8_t masks[8] = {
519 : /* 0 0b00000000 */ 0x00, /* 1 0b10000000 */ 0x80,
520 : /* 2 0b11000000 */ 0xC0, /* 3 0b11100000 */ 0xE0,
521 : /* 4 0b11110000 */ 0xF0, /* 5 0b11111000 */ 0xF8,
522 : /* 6 0b11111100 */ 0xFC, /* 7 0b11111110 */ 0xFE
523 : };
524 : static uint8_t markbit[8] = {
525 : /* 0 0b10000000 */ 0x80, /* 1 0b01000000 */ 0x40,
526 : /* 2 0b00100000 */ 0x20, /* 3 0b00010000 */ 0x10,
527 : /* 4 0b00001000 */ 0x08, /* 5 0b00000100 */ 0x04,
528 : /* 6 0b00000010 */ 0x02, /* 7 0b00000001 */ 0x01
529 : };
530 :
531 0 : if (!context) return shaNull;
532 0 : if (!length) return shaSuccess;
533 0 : if (context->Corrupted) return context->Corrupted;
534 0 : if (context->Computed) return context->Corrupted = shaStateError;
535 0 : if (length >= 8) return context->Corrupted = shaBadParam;
536 :
537 0 : SHA384_512AddLength(context, length);
538 0 : SHA384_512Finalize(context, (uint8_t)
539 0 : ((message_bits & masks[length]) | markbit[length]));
540 :
541 0 : return context->Corrupted;
542 : }
543 :
544 : /*
545 : * SHA512Result
546 : *
547 : * Description:
548 : * This function will return the 512-bit message digest
549 : * into the Message_Digest array provided by the caller.
550 : * NOTE:
551 : * The first octet of hash is stored in the element with index 0,
552 : * the last octet of hash in the element with index 63.
553 : *
554 : * Parameters:
555 : * context: [in/out]
556 : * The context to use to calculate the SHA hash.
557 : * Message_Digest[ ]: [out]
558 : * Where the digest is returned.
559 : *
560 : * Returns:
561 : * sha Error Code.
562 : *
563 : */
564 677 : int SHA512Result(SHA512Context *context,
565 : uint8_t Message_Digest[SHA512HashSize])
566 : {
567 677 : return SHA384_512ResultN(context, Message_Digest, SHA512HashSize);
568 : }
569 :
570 : /*
571 : * SHA384_512Reset
572 : *
573 : * Description:
574 : * This helper function will initialize the SHA512Context in
575 : * preparation for computing a new SHA384 or SHA512 message
576 : * digest.
577 : *
578 : * Parameters:
579 : * context: [in/out]
580 : * The context to reset.
581 : * H0[ ]: [in]
582 : * The initial hash value array to use.
583 : *
584 : * Returns:
585 : * sha Error Code.
586 : *
587 : */
588 : #ifdef USE_32BIT_ONLY
589 : static int SHA384_512Reset(SHA512Context *context,
590 : uint32_t H0[SHA512HashSize/4])
591 : #else /* !USE_32BIT_ONLY */
592 678 : static int SHA384_512Reset(SHA512Context *context,
593 : uint64_t H0[SHA512HashSize/8])
594 : #endif /* USE_32BIT_ONLY */
595 : {
596 : int i;
597 678 : if (!context) return shaNull;
598 :
599 678 : context->Message_Block_Index = 0;
600 :
601 : #ifdef USE_32BIT_ONLY
602 : context->Length[0] = context->Length[1] =
603 : context->Length[2] = context->Length[3] = 0;
604 :
605 : for (i = 0; i < SHA512HashSize/4; i++)
606 : context->Intermediate_Hash[i] = H0[i];
607 : #else /* !USE_32BIT_ONLY */
608 678 : context->Length_High = context->Length_Low = 0;
609 :
610 6102 : for (i = 0; i < SHA512HashSize/8; i++)
611 5424 : context->Intermediate_Hash[i] = H0[i];
612 : #endif /* USE_32BIT_ONLY */
613 :
614 678 : context->Computed = 0;
615 678 : context->Corrupted = shaSuccess;
616 :
617 678 : return shaSuccess;
618 : }
619 :
620 : /*
621 : * SHA384_512ProcessMessageBlock
622 : *
623 : * Description:
624 : * This helper function will process the next 1024 bits of the
625 : * message stored in the Message_Block array.
626 : *
627 : * Parameters:
628 : * context: [in/out]
629 : * The SHA context to update.
630 : *
631 : * Returns:
632 : * Nothing.
633 : *
634 : * Comments:
635 : * Many of the variable names in this code, especially the
636 : * single character names, were used because those were the
637 : * names used in the Secure Hash Standard.
638 : *
639 : *
640 : */
641 840 : static void SHA384_512ProcessMessageBlock(SHA512Context *context)
642 : {
643 : #ifdef USE_32BIT_ONLY
644 : /* Constants defined in FIPS 180-3, section 4.2.3 */
645 : static const uint32_t K[80*2] = {
646 : 0x428A2F98, 0xD728AE22, 0x71374491, 0x23EF65CD, 0xB5C0FBCF,
647 : 0xEC4D3B2F, 0xE9B5DBA5, 0x8189DBBC, 0x3956C25B, 0xF348B538,
648 : 0x59F111F1, 0xB605D019, 0x923F82A4, 0xAF194F9B, 0xAB1C5ED5,
649 : 0xDA6D8118, 0xD807AA98, 0xA3030242, 0x12835B01, 0x45706FBE,
650 : 0x243185BE, 0x4EE4B28C, 0x550C7DC3, 0xD5FFB4E2, 0x72BE5D74,
651 : 0xF27B896F, 0x80DEB1FE, 0x3B1696B1, 0x9BDC06A7, 0x25C71235,
652 : 0xC19BF174, 0xCF692694, 0xE49B69C1, 0x9EF14AD2, 0xEFBE4786,
653 : 0x384F25E3, 0x0FC19DC6, 0x8B8CD5B5, 0x240CA1CC, 0x77AC9C65,
654 : 0x2DE92C6F, 0x592B0275, 0x4A7484AA, 0x6EA6E483, 0x5CB0A9DC,
655 : 0xBD41FBD4, 0x76F988DA, 0x831153B5, 0x983E5152, 0xEE66DFAB,
656 : 0xA831C66D, 0x2DB43210, 0xB00327C8, 0x98FB213F, 0xBF597FC7,
657 : 0xBEEF0EE4, 0xC6E00BF3, 0x3DA88FC2, 0xD5A79147, 0x930AA725,
658 : 0x06CA6351, 0xE003826F, 0x14292967, 0x0A0E6E70, 0x27B70A85,
659 : 0x46D22FFC, 0x2E1B2138, 0x5C26C926, 0x4D2C6DFC, 0x5AC42AED,
660 : 0x53380D13, 0x9D95B3DF, 0x650A7354, 0x8BAF63DE, 0x766A0ABB,
661 : 0x3C77B2A8, 0x81C2C92E, 0x47EDAEE6, 0x92722C85, 0x1482353B,
662 : 0xA2BFE8A1, 0x4CF10364, 0xA81A664B, 0xBC423001, 0xC24B8B70,
663 : 0xD0F89791, 0xC76C51A3, 0x0654BE30, 0xD192E819, 0xD6EF5218,
664 : 0xD6990624, 0x5565A910, 0xF40E3585, 0x5771202A, 0x106AA070,
665 : 0x32BBD1B8, 0x19A4C116, 0xB8D2D0C8, 0x1E376C08, 0x5141AB53,
666 : 0x2748774C, 0xDF8EEB99, 0x34B0BCB5, 0xE19B48A8, 0x391C0CB3,
667 : 0xC5C95A63, 0x4ED8AA4A, 0xE3418ACB, 0x5B9CCA4F, 0x7763E373,
668 : 0x682E6FF3, 0xD6B2B8A3, 0x748F82EE, 0x5DEFB2FC, 0x78A5636F,
669 : 0x43172F60, 0x84C87814, 0xA1F0AB72, 0x8CC70208, 0x1A6439EC,
670 : 0x90BEFFFA, 0x23631E28, 0xA4506CEB, 0xDE82BDE9, 0xBEF9A3F7,
671 : 0xB2C67915, 0xC67178F2, 0xE372532B, 0xCA273ECE, 0xEA26619C,
672 : 0xD186B8C7, 0x21C0C207, 0xEADA7DD6, 0xCDE0EB1E, 0xF57D4F7F,
673 : 0xEE6ED178, 0x06F067AA, 0x72176FBA, 0x0A637DC5, 0xA2C898A6,
674 : 0x113F9804, 0xBEF90DAE, 0x1B710B35, 0x131C471B, 0x28DB77F5,
675 : 0x23047D84, 0x32CAAB7B, 0x40C72493, 0x3C9EBE0A, 0x15C9BEBC,
676 : 0x431D67C4, 0x9C100D4C, 0x4CC5D4BE, 0xCB3E42B6, 0x597F299C,
677 : 0xFC657E2A, 0x5FCB6FAB, 0x3AD6FAEC, 0x6C44198C, 0x4A475817
678 : };
679 : int t, t2, t8; /* Loop counter */
680 : uint32_t temp1[2], temp2[2], /* Temporary word values */
681 : temp3[2], temp4[2], temp5[2];
682 : uint32_t W[2*80]; /* Word sequence */
683 : uint32_t A[2], B[2], C[2], D[2], /* Word buffers */
684 : E[2], F[2], G[2], H[2];
685 :
686 : /* Initialize the first 16 words in the array W */
687 : for (t = t2 = t8 = 0; t < 16; t++, t8 += 8) {
688 : W[t2++] = ((((uint32_t)context->Message_Block[t8 ])) << 24) |
689 : ((((uint32_t)context->Message_Block[t8 + 1])) << 16) |
690 : ((((uint32_t)context->Message_Block[t8 + 2])) << 8) |
691 : ((((uint32_t)context->Message_Block[t8 + 3])));
692 : W[t2++] = ((((uint32_t)context->Message_Block[t8 + 4])) << 24) |
693 : ((((uint32_t)context->Message_Block[t8 + 5])) << 16) |
694 : ((((uint32_t)context->Message_Block[t8 + 6])) << 8) |
695 : ((((uint32_t)context->Message_Block[t8 + 7])));
696 : }
697 :
698 : for (t = 16; t < 80; t++, t2 += 2) {
699 : /* W[t] = SHA512_sigma1(W[t-2]) + W[t-7] +
700 : SHA512_sigma0(W[t-15]) + W[t-16]; */
701 : uint32_t *Wt2 = &W[t2-2*2];
702 : uint32_t *Wt7 = &W[t2-7*2];
703 : uint32_t *Wt15 = &W[t2-15*2];
704 : uint32_t *Wt16 = &W[t2-16*2];
705 : SHA512_sigma1(Wt2, temp1);
706 : SHA512_ADD(temp1, Wt7, temp2);
707 : SHA512_sigma0(Wt15, temp1);
708 : SHA512_ADD(temp1, Wt16, temp3);
709 : SHA512_ADD(temp2, temp3, &W[t2]);
710 : }
711 :
712 : A[0] = context->Intermediate_Hash[0];
713 : A[1] = context->Intermediate_Hash[1];
714 : B[0] = context->Intermediate_Hash[2];
715 : B[1] = context->Intermediate_Hash[3];
716 : C[0] = context->Intermediate_Hash[4];
717 : C[1] = context->Intermediate_Hash[5];
718 : D[0] = context->Intermediate_Hash[6];
719 : D[1] = context->Intermediate_Hash[7];
720 : E[0] = context->Intermediate_Hash[8];
721 : E[1] = context->Intermediate_Hash[9];
722 : F[0] = context->Intermediate_Hash[10];
723 : F[1] = context->Intermediate_Hash[11];
724 : G[0] = context->Intermediate_Hash[12];
725 : G[1] = context->Intermediate_Hash[13];
726 : H[0] = context->Intermediate_Hash[14];
727 : H[1] = context->Intermediate_Hash[15];
728 :
729 : for (t = t2 = 0; t < 80; t++, t2 += 2) {
730 : /*
731 : * temp1 = H + SHA512_SIGMA1(E) + SHA_Ch(E,F,G) + K[t] + W[t];
732 : */
733 : SHA512_SIGMA1(E,temp1);
734 : SHA512_ADD(H, temp1, temp2);
735 : SHA_Ch(E,F,G,temp3);
736 : SHA512_ADD(temp2, temp3, temp4);
737 : SHA512_ADD(&K[t2], &W[t2], temp5);
738 : SHA512_ADD(temp4, temp5, temp1);
739 : /*
740 : * temp2 = SHA512_SIGMA0(A) + SHA_Maj(A,B,C);
741 : */
742 : SHA512_SIGMA0(A,temp3);
743 : SHA_Maj(A,B,C,temp4);
744 : SHA512_ADD(temp3, temp4, temp2);
745 : H[0] = G[0]; H[1] = G[1];
746 : G[0] = F[0]; G[1] = F[1];
747 : F[0] = E[0]; F[1] = E[1];
748 : SHA512_ADD(D, temp1, E);
749 : D[0] = C[0]; D[1] = C[1];
750 : C[0] = B[0]; C[1] = B[1];
751 : B[0] = A[0]; B[1] = A[1];
752 : SHA512_ADD(temp1, temp2, A);
753 : }
754 :
755 : SHA512_ADDTO2(&context->Intermediate_Hash[0], A);
756 : SHA512_ADDTO2(&context->Intermediate_Hash[2], B);
757 : SHA512_ADDTO2(&context->Intermediate_Hash[4], C);
758 : SHA512_ADDTO2(&context->Intermediate_Hash[6], D);
759 : SHA512_ADDTO2(&context->Intermediate_Hash[8], E);
760 : SHA512_ADDTO2(&context->Intermediate_Hash[10], F);
761 : SHA512_ADDTO2(&context->Intermediate_Hash[12], G);
762 : SHA512_ADDTO2(&context->Intermediate_Hash[14], H);
763 :
764 : #else /* !USE_32BIT_ONLY */
765 : /* Constants defined in FIPS 180-3, section 4.2.3 */
766 : static const uint64_t K[80] = {
767 : 0x428A2F98D728AE22ll, 0x7137449123EF65CDll, 0xB5C0FBCFEC4D3B2Fll,
768 : 0xE9B5DBA58189DBBCll, 0x3956C25BF348B538ll, 0x59F111F1B605D019ll,
769 : 0x923F82A4AF194F9Bll, 0xAB1C5ED5DA6D8118ll, 0xD807AA98A3030242ll,
770 : 0x12835B0145706FBEll, 0x243185BE4EE4B28Cll, 0x550C7DC3D5FFB4E2ll,
771 : 0x72BE5D74F27B896Fll, 0x80DEB1FE3B1696B1ll, 0x9BDC06A725C71235ll,
772 : 0xC19BF174CF692694ll, 0xE49B69C19EF14AD2ll, 0xEFBE4786384F25E3ll,
773 : 0x0FC19DC68B8CD5B5ll, 0x240CA1CC77AC9C65ll, 0x2DE92C6F592B0275ll,
774 : 0x4A7484AA6EA6E483ll, 0x5CB0A9DCBD41FBD4ll, 0x76F988DA831153B5ll,
775 : 0x983E5152EE66DFABll, 0xA831C66D2DB43210ll, 0xB00327C898FB213Fll,
776 : 0xBF597FC7BEEF0EE4ll, 0xC6E00BF33DA88FC2ll, 0xD5A79147930AA725ll,
777 : 0x06CA6351E003826Fll, 0x142929670A0E6E70ll, 0x27B70A8546D22FFCll,
778 : 0x2E1B21385C26C926ll, 0x4D2C6DFC5AC42AEDll, 0x53380D139D95B3DFll,
779 : 0x650A73548BAF63DEll, 0x766A0ABB3C77B2A8ll, 0x81C2C92E47EDAEE6ll,
780 : 0x92722C851482353Bll, 0xA2BFE8A14CF10364ll, 0xA81A664BBC423001ll,
781 : 0xC24B8B70D0F89791ll, 0xC76C51A30654BE30ll, 0xD192E819D6EF5218ll,
782 : 0xD69906245565A910ll, 0xF40E35855771202All, 0x106AA07032BBD1B8ll,
783 : 0x19A4C116B8D2D0C8ll, 0x1E376C085141AB53ll, 0x2748774CDF8EEB99ll,
784 : 0x34B0BCB5E19B48A8ll, 0x391C0CB3C5C95A63ll, 0x4ED8AA4AE3418ACBll,
785 : 0x5B9CCA4F7763E373ll, 0x682E6FF3D6B2B8A3ll, 0x748F82EE5DEFB2FCll,
786 : 0x78A5636F43172F60ll, 0x84C87814A1F0AB72ll, 0x8CC702081A6439ECll,
787 : 0x90BEFFFA23631E28ll, 0xA4506CEBDE82BDE9ll, 0xBEF9A3F7B2C67915ll,
788 : 0xC67178F2E372532Bll, 0xCA273ECEEA26619Cll, 0xD186B8C721C0C207ll,
789 : 0xEADA7DD6CDE0EB1Ell, 0xF57D4F7FEE6ED178ll, 0x06F067AA72176FBAll,
790 : 0x0A637DC5A2C898A6ll, 0x113F9804BEF90DAEll, 0x1B710B35131C471Bll,
791 : 0x28DB77F523047D84ll, 0x32CAAB7B40C72493ll, 0x3C9EBE0A15C9BEBCll,
792 : 0x431D67C49C100D4Cll, 0x4CC5D4BECB3E42B6ll, 0x597F299CFC657E2All,
793 : 0x5FCB6FAB3AD6FAECll, 0x6C44198C4A475817ll
794 : };
795 : int t, t8; /* Loop counter */
796 : uint64_t temp1, temp2; /* Temporary word value */
797 : uint64_t W[80]; /* Word sequence */
798 : uint64_t A, B, C, D, E, F, G, H; /* Word buffers */
799 :
800 : /*
801 : * Initialize the first 16 words in the array W
802 : */
803 14280 : for (t = t8 = 0; t < 16; t++, t8 += 8)
804 13440 : W[t] = ((uint64_t)(context->Message_Block[t8 ]) << 56) |
805 13440 : ((uint64_t)(context->Message_Block[t8 + 1]) << 48) |
806 13440 : ((uint64_t)(context->Message_Block[t8 + 2]) << 40) |
807 13440 : ((uint64_t)(context->Message_Block[t8 + 3]) << 32) |
808 13440 : ((uint64_t)(context->Message_Block[t8 + 4]) << 24) |
809 13440 : ((uint64_t)(context->Message_Block[t8 + 5]) << 16) |
810 13440 : ((uint64_t)(context->Message_Block[t8 + 6]) << 8) |
811 13440 : ((uint64_t)(context->Message_Block[t8 + 7]));
812 :
813 54600 : for (t = 16; t < 80; t++)
814 53760 : W[t] = SHA512_sigma1(W[t-2]) + W[t-7] +
815 53760 : SHA512_sigma0(W[t-15]) + W[t-16];
816 840 : A = context->Intermediate_Hash[0];
817 840 : B = context->Intermediate_Hash[1];
818 840 : C = context->Intermediate_Hash[2];
819 840 : D = context->Intermediate_Hash[3];
820 840 : E = context->Intermediate_Hash[4];
821 840 : F = context->Intermediate_Hash[5];
822 840 : G = context->Intermediate_Hash[6];
823 840 : H = context->Intermediate_Hash[7];
824 :
825 68040 : for (t = 0; t < 80; t++) {
826 67200 : temp1 = H + SHA512_SIGMA1(E) + SHA_Ch(E,F,G) + K[t] + W[t];
827 67200 : temp2 = SHA512_SIGMA0(A) + SHA_Maj(A,B,C);
828 : H = G;
829 : G = F;
830 : F = E;
831 67200 : E = D + temp1;
832 : D = C;
833 : C = B;
834 : B = A;
835 67200 : A = temp1 + temp2;
836 : }
837 :
838 840 : context->Intermediate_Hash[0] += A;
839 840 : context->Intermediate_Hash[1] += B;
840 840 : context->Intermediate_Hash[2] += C;
841 840 : context->Intermediate_Hash[3] += D;
842 840 : context->Intermediate_Hash[4] += E;
843 840 : context->Intermediate_Hash[5] += F;
844 840 : context->Intermediate_Hash[6] += G;
845 840 : context->Intermediate_Hash[7] += H;
846 : #endif /* USE_32BIT_ONLY */
847 :
848 840 : context->Message_Block_Index = 0;
849 840 : }
850 :
851 : /*
852 : * SHA384_512Finalize
853 : *
854 : * Description:
855 : * This helper function finishes off the digest calculations.
856 : *
857 : * Parameters:
858 : * context: [in/out]
859 : * The SHA context to update.
860 : * Pad_Byte: [in]
861 : * The last byte to add to the message block before the 0-padding
862 : * and length. This will contain the last bits of the message
863 : * followed by another single bit. If the message was an
864 : * exact multiple of 8-bits long, Pad_Byte will be 0x80.
865 : *
866 : * Returns:
867 : * sha Error Code.
868 : *
869 : */
870 678 : static void SHA384_512Finalize(SHA512Context *context,
871 : uint8_t Pad_Byte)
872 : {
873 : int_least16_t i;
874 678 : SHA384_512PadMessage(context, Pad_Byte);
875 : /* message may be sensitive, clear it out */
876 87462 : for (i = 0; i < SHA512_Message_Block_Size; ++i)
877 86784 : context->Message_Block[i] = 0;
878 : #ifdef USE_32BIT_ONLY /* and clear length */
879 : context->Length[0] = context->Length[1] = 0;
880 : context->Length[2] = context->Length[3] = 0;
881 : #else /* !USE_32BIT_ONLY */
882 678 : context->Length_High = context->Length_Low = 0;
883 : #endif /* USE_32BIT_ONLY */
884 678 : context->Computed = 1;
885 678 : }
886 :
887 : /*
888 : * SHA384_512PadMessage
889 : *
890 : * Description:
891 : * According to the standard, the message must be padded to the next
892 : * even multiple of 1024 bits. The first padding bit must be a '1'.
893 : * The last 128 bits represent the length of the original message.
894 : * All bits in between should be 0. This helper function will
895 : * pad the message according to those rules by filling the
896 : * Message_Block array accordingly. When it returns, it can be
897 : * assumed that the message digest has been computed.
898 : *
899 : * Parameters:
900 : * context: [in/out]
901 : * The context to pad.
902 : * Pad_Byte: [in]
903 : * The last byte to add to the message block before the 0-padding
904 : * and length. This will contain the last bits of the message
905 : * followed by another single bit. If the message was an
906 : * exact multiple of 8-bits long, Pad_Byte will be 0x80.
907 : *
908 : * Returns:
909 : * Nothing.
910 : *
911 : */
912 678 : static void SHA384_512PadMessage(SHA512Context *context,
913 : uint8_t Pad_Byte)
914 : {
915 : /*
916 : * Check to see if the current message block is too small to hold
917 : * the initial padding bits and length. If so, we will pad the
918 : * block, process it, and then continue padding into a second
919 : * block.
920 : */
921 678 : if (context->Message_Block_Index >= (SHA512_Message_Block_Size-16)) {
922 0 : context->Message_Block[context->Message_Block_Index++] = Pad_Byte;
923 0 : while (context->Message_Block_Index < SHA512_Message_Block_Size)
924 0 : context->Message_Block[context->Message_Block_Index++] = 0;
925 :
926 0 : SHA384_512ProcessMessageBlock(context);
927 : } else
928 678 : context->Message_Block[context->Message_Block_Index++] = Pad_Byte;
929 :
930 70886 : while (context->Message_Block_Index < (SHA512_Message_Block_Size-16))
931 70208 : context->Message_Block[context->Message_Block_Index++] = 0;
932 :
933 : /*
934 : * Store the message length as the last 16 octets
935 : */
936 : #ifdef USE_32BIT_ONLY
937 : context->Message_Block[112] = (uint8_t)(context->Length[0] >> 24);
938 : context->Message_Block[113] = (uint8_t)(context->Length[0] >> 16);
939 : context->Message_Block[114] = (uint8_t)(context->Length[0] >> 8);
940 : context->Message_Block[115] = (uint8_t)(context->Length[0]);
941 : context->Message_Block[116] = (uint8_t)(context->Length[1] >> 24);
942 : context->Message_Block[117] = (uint8_t)(context->Length[1] >> 16);
943 : context->Message_Block[118] = (uint8_t)(context->Length[1] >> 8);
944 : context->Message_Block[119] = (uint8_t)(context->Length[1]);
945 :
946 : context->Message_Block[120] = (uint8_t)(context->Length[2] >> 24);
947 : context->Message_Block[121] = (uint8_t)(context->Length[2] >> 16);
948 : context->Message_Block[122] = (uint8_t)(context->Length[2] >> 8);
949 : context->Message_Block[123] = (uint8_t)(context->Length[2]);
950 : context->Message_Block[124] = (uint8_t)(context->Length[3] >> 24);
951 : context->Message_Block[125] = (uint8_t)(context->Length[3] >> 16);
952 : context->Message_Block[126] = (uint8_t)(context->Length[3] >> 8);
953 : context->Message_Block[127] = (uint8_t)(context->Length[3]);
954 : #else /* !USE_32BIT_ONLY */
955 678 : context->Message_Block[112] = (uint8_t)(context->Length_High >> 56);
956 678 : context->Message_Block[113] = (uint8_t)(context->Length_High >> 48);
957 678 : context->Message_Block[114] = (uint8_t)(context->Length_High >> 40);
958 678 : context->Message_Block[115] = (uint8_t)(context->Length_High >> 32);
959 678 : context->Message_Block[116] = (uint8_t)(context->Length_High >> 24);
960 678 : context->Message_Block[117] = (uint8_t)(context->Length_High >> 16);
961 678 : context->Message_Block[118] = (uint8_t)(context->Length_High >> 8);
962 678 : context->Message_Block[119] = (uint8_t)(context->Length_High);
963 :
964 678 : context->Message_Block[120] = (uint8_t)(context->Length_Low >> 56);
965 678 : context->Message_Block[121] = (uint8_t)(context->Length_Low >> 48);
966 678 : context->Message_Block[122] = (uint8_t)(context->Length_Low >> 40);
967 678 : context->Message_Block[123] = (uint8_t)(context->Length_Low >> 32);
968 678 : context->Message_Block[124] = (uint8_t)(context->Length_Low >> 24);
969 678 : context->Message_Block[125] = (uint8_t)(context->Length_Low >> 16);
970 678 : context->Message_Block[126] = (uint8_t)(context->Length_Low >> 8);
971 678 : context->Message_Block[127] = (uint8_t)(context->Length_Low);
972 : #endif /* USE_32BIT_ONLY */
973 :
974 678 : SHA384_512ProcessMessageBlock(context);
975 678 : }
976 :
977 : /*
978 : * SHA384_512ResultN
979 : *
980 : * Description:
981 : * This helper function will return the 384-bit or 512-bit message
982 : * digest into the Message_Digest array provided by the caller.
983 : * NOTE:
984 : * The first octet of hash is stored in the element with index 0,
985 : * the last octet of hash in the element with index 47/63.
986 : *
987 : * Parameters:
988 : * context: [in/out]
989 : * The context to use to calculate the SHA hash.
990 : * Message_Digest[ ]: [out]
991 : * Where the digest is returned.
992 : * HashSize: [in]
993 : * The size of the hash, either 48 or 64.
994 : *
995 : * Returns:
996 : * sha Error Code.
997 : *
998 : */
999 678 : static int SHA384_512ResultN(SHA512Context *context,
1000 : uint8_t Message_Digest[ ], int HashSize)
1001 : {
1002 : int i;
1003 : #ifdef USE_32BIT_ONLY
1004 : int i2;
1005 : #endif /* USE_32BIT_ONLY */
1006 :
1007 678 : if (!context) return shaNull;
1008 678 : if (!Message_Digest) return shaNull;
1009 678 : if (context->Corrupted) return context->Corrupted;
1010 :
1011 678 : if (!context->Computed)
1012 678 : SHA384_512Finalize(context, 0x80);
1013 :
1014 : #ifdef USE_32BIT_ONLY
1015 : for (i = i2 = 0; i < HashSize; ) {
1016 : Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>24);
1017 : Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>16);
1018 : Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>8);
1019 : Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2++]);
1020 : Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>24);
1021 : Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>16);
1022 : Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>8);
1023 : Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2++]);
1024 : }
1025 : #else /* !USE_32BIT_ONLY */
1026 44054 : for (i = 0; i < HashSize; ++i)
1027 43376 : Message_Digest[i] = (uint8_t)
1028 43376 : (context->Intermediate_Hash[i>>3] >> 8 * ( 7 - ( i % 8 ) ));
1029 : #endif /* USE_32BIT_ONLY */
1030 :
1031 : return shaSuccess;
1032 : }
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