openssh/openbsd-compat/sha2.c

282 SHA256_Init(SHA256_CTX *context)
284 	if (context == NULL)
286 	memcpy(context->state, sha256_initial_hash_value,
288 	memset(context->buffer, 0, sizeof(context->buffer));
289 	context->bitcount = 0;
451 SHA256_Update(SHA256_CTX *context, const u_int8_t *data, size_t len)
459 	usedspace = (context->bitcount >> 3) % SHA256_BLOCK_LENGTH;
466 			memcpy(&context->buffer[usedspace], data, freespace);
467 			context->bitcount += freespace << 3;
470 			SHA256_Transform(context->state, context->buffer);
473 			memcpy(&context->buffer[usedspace], data, len);
474 			context->bitcount += len << 3;
482 		SHA256_Transform(context->state, data);
483 		context->bitcount += SHA256_BLOCK_LENGTH << 3;
489 		memcpy(context->buffer, data, len);
490 		context->bitcount += len << 3;
497 SHA256_Pad(SHA256_CTX *context)
501 	usedspace = (context->bitcount >> 3) % SHA256_BLOCK_LENGTH;
504 		context->buffer[usedspace++] = 0x80;
508 			memset(&context->buffer[usedspace], 0,
512 				memset(&context->buffer[usedspace], 0,
516 			SHA256_Transform(context->state, context->buffer);
519 			memset(context->buffer, 0, SHA256_SHORT_BLOCK_LENGTH);
523 		memset(context->buffer, 0, SHA256_SHORT_BLOCK_LENGTH);
526 		*context->buffer = 0x80;
529 	BE_64_TO_8(&context->buffer[SHA256_SHORT_BLOCK_LENGTH],
530 	    context->bitcount);
533 	SHA256_Transform(context->state, context->buffer);
540 SHA256_Final(u_int8_t digest[SHA256_DIGEST_LENGTH], SHA256_CTX *context)
542 	SHA256_Pad(context);
551 			BE_32_TO_8(digest + i * 4, context->state[i]);
553 		memcpy(digest, context->state, SHA256_DIGEST_LENGTH);
555 		memset(context, 0, sizeof(*context));
562 SHA512_Init(SHA512_CTX *context)
564 	if (context == NULL)
566 	memcpy(context->state, sha512_initial_hash_value,
568 	memset(context->buffer, 0, sizeof(context->buffer));
569 	context->bitcount[0] = context->bitcount[1] =  0;
732 SHA512_Update(SHA512_CTX *context, const u_int8_t *data, size_t len)
740 	usedspace = (context->bitcount[0] >> 3) % SHA512_BLOCK_LENGTH;
747 			memcpy(&context->buffer[usedspace], data, freespace);
748 			ADDINC128(context->bitcount, freespace << 3);
751 			SHA512_Transform(context->state, context->buffer);
754 			memcpy(&context->buffer[usedspace], data, len);
755 			ADDINC128(context->bitcount, len << 3);
763 		SHA512_Transform(context->state, data);
764 		ADDINC128(context->bitcount, SHA512_BLOCK_LENGTH << 3);
770 		memcpy(context->buffer, data, len);
771 		ADDINC128(context->bitcount, len << 3);
778 SHA512_Pad(SHA512_CTX *context)
782 	usedspace = (context->bitcount[0] >> 3) % SHA512_BLOCK_LENGTH;
785 		context->buffer[usedspace++] = 0x80;
789 			memset(&context->buffer[usedspace], 0, SHA512_SHORT_BLOCK_LENGTH - usedspace);
792 				memset(&context->buffer[usedspace], 0, SHA512_BLOCK_LENGTH - usedspace);
795 			SHA512_Transform(context->state, context->buffer);
798 			memset(context->buffer, 0, SHA512_BLOCK_LENGTH - 2);
802 		memset(context->buffer, 0, SHA512_SHORT_BLOCK_LENGTH);
805 		*context->buffer = 0x80;
808 	BE_64_TO_8(&context->buffer[SHA512_SHORT_BLOCK_LENGTH],
809 	    context->bitcount[1]);
810 	BE_64_TO_8(&context->buffer[SHA512_SHORT_BLOCK_LENGTH + 8],
811 	    context->bitcount[0]);
814 	SHA512_Transform(context->state, context->buffer);
821 SHA512_Final(u_int8_t digest[SHA512_DIGEST_LENGTH], SHA512_CTX *context)
823 	SHA512_Pad(context);
832 			BE_64_TO_8(digest + i * 8, context->state[i]);
834 		memcpy(digest, context->state, SHA512_DIGEST_LENGTH);
836 		memset(context, 0, sizeof(*context));
844 SHA384_Init(SHA384_CTX *context)
846 	if (context == NULL)
848 	memcpy(context->state, sha384_initial_hash_value,
850 	memset(context->buffer, 0, sizeof(context->buffer));
851 	context->bitcount[0] = context->bitcount[1] = 0;
859 SHA384_Final(u_int8_t digest[SHA384_DIGEST_LENGTH], SHA384_CTX *context)
861 	SHA384_Pad(context);
870 			BE_64_TO_8(digest + i * 8, context->state[i]);
872 		memcpy(digest, context->state, SHA384_DIGEST_LENGTH);
877 	memset(context, 0, sizeof(*context));