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pqcrypto
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pqcrypto/crypto_sign/sphincs-sha256-256f-simple/avx2/params.h

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  1. #ifndef PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_PARAMS_H

  2. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_PARAMS_H

  3. 

  4. /* Hash output length in bytes. */

  5. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_N 32

  6. /* Height of the hypertree. */

  7. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_FULL_HEIGHT 68

  8. /* Number of subtree layer. */

  9. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_D 17

  10. /* FORS tree dimensions. */

  11. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_FORS_HEIGHT 10

  12. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_FORS_TREES 30

  13. /* Winternitz parameter, */

  14. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_WOTS_W 16

  15. 

  16. /* The hash function is defined by linking a different hash.c file, as opposed

  17.    to setting a #define constant. */

  18. 

  19. /* For clarity */

  20. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_ADDR_BYTES 32

  21. 

  22. /* WOTS parameters. */

  23. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_WOTS_LOGW 4

  24. 

  25. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_WOTS_LEN1 (8 * PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_N / PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_WOTS_LOGW)

  26. 

  27. /* PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_WOTS_LEN2 is floor(log(len_1 * (w - 1)) / log(w)) + 1; we precompute */

  28. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_WOTS_LEN2 3

  29. 

  30. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_WOTS_LEN (PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_WOTS_LEN1 + PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_WOTS_LEN2)

  31. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_WOTS_BYTES (PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_WOTS_LEN * PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_N)

  32. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_WOTS_PK_BYTES PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_WOTS_BYTES

  33. 

  34. /* Subtree size. */

  35. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_TREE_HEIGHT (PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_FULL_HEIGHT / PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_D)

  36. 

  37. /* FORS parameters. */

  38. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_FORS_MSG_BYTES ((PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_FORS_HEIGHT * PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_FORS_TREES + 7) / 8)

  39. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_FORS_BYTES ((PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_FORS_HEIGHT + 1) * PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_FORS_TREES * PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_N)

  40. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_FORS_PK_BYTES PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_N

  41. 

  42. /* Resulting SPX sizes. */

  43. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_BYTES (PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_N + PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_FORS_BYTES + PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_D * PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_WOTS_BYTES +\

  44.         PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_FULL_HEIGHT * PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_N)

  45. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_PK_BYTES (2 * PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_N)

  46. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_SK_BYTES (2 * PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_N + PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_PK_BYTES)

  47. 

  48. /* Optionally, signing can be made non-deterministic using optrand.

  49.    This can help counter side-channel attacks that would benefit from

  50.    getting a large number of traces when the signer uses the same nodes. */

  51. #define PQCLEAN_SPHINCSSHA256256FSIMPLE_AVX2_OPTRAND_BYTES 32

  52. 

  53. #endif