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pqcrypto/3rd/jitterentropy/jitterentropy-sha3.h

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  1. /*

  2.  * Copyright (C) 2021 - 2022, Stephan Mueller <smueller@chronox.de>

  3.  *

  4.  * License: see LICENSE file in root directory

  5.  *

  6.  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED

  7.  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

  8.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF

  9.  * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE

  10.  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

  11.  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT

  12.  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR

  13.  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

  14.  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

  15.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE

  16.  * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH

  17.  * DAMAGE.

  18.  */

  19. 

  20. #ifndef JITTERENTROPY_SHA3_H

  21. #define JITTERENTROPY_SHA3_H

  22. 

  23. #include "jitterentropy.h"

  24. 

  25. #ifdef __cplusplus

  26. extern "C"

  27. {

  28. #endif

  29. 

  30. #define SHA3_SIZE_BLOCK(bits)	((1600 - 2 * bits) >> 3)

  31. #define SHA3_256_SIZE_BLOCK	SHA3_SIZE_BLOCK(SHA3_256_SIZE_DIGEST_BITS)

  32. #define SHA3_MAX_SIZE_BLOCK	SHA3_256_SIZE_BLOCK

  33. 

  34. struct sha_ctx {

  35. 	uint64_t state[25];

  36. 	size_t msg_len;

  37. 	unsigned int r;

  38. 	unsigned int rword;

  39. 	unsigned int digestsize;

  40. 	uint8_t partial[SHA3_MAX_SIZE_BLOCK];

  41. };

  42. 

  43. #define SHA_MAX_CTX_SIZE	(sizeof(struct sha_ctx))

  44. #define HASH_CTX_ON_STACK(name)						       \

  45. 	struct sha_ctx name

  46. 

  47. void sha3_256_init(struct sha_ctx *ctx);

  48. void sha3_update(struct sha_ctx *ctx, const uint8_t *in, size_t inlen);

  49. void sha3_final(struct sha_ctx *ctx, uint8_t *digest);

  50. int sha3_alloc(void **hash_state);

  51. void sha3_dealloc(void *hash_state);

  52. int sha3_tester(void);

  53. 

  54. #ifdef __cplusplus

  55. }

  56. #endif

  57. 

  58. #endif /* JITTERENTROPY_SHA3_H */