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mkp224o
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ed25519
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ref10
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fe.h

fe.h 1.8 KB
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  1. #ifndef FE_H
    2. 

  2. #define FE_H
    3. 

  3. 

  4. #include "crypto_int32.h"
    5. 

  5. #include <stddef.h>
    6. 

  6. 

  7. typedef crypto_int32 fe[10];
    8. 

  8. 

  9. /*
    10. 

  10. fe means field element.
    11. 

  11. Here the field is \Z/(2^255-19).
    12. 

  12. An element t, entries t[0]...t[9], represents the integer
    13. 

  13. t[0]+2^26 t[1]+2^51 t[2]+2^77 t[3]+2^102 t[4]+...+2^230 t[9].
    14. 

  14. Bounds on each t[i] vary depending on context.
    15. 

  15. */
    16. 

  16. 

  17. #define fe_frombytes CRYPTO_NAMESPACE(fe_frombytes)
    18. 

  18. #define fe_tobytes CRYPTO_NAMESPACE(fe_tobytes)
    19. 

  19. #define fe_copy CRYPTO_NAMESPACE(fe_copy)
    20. 

  20. #define fe_isnonzero CRYPTO_NAMESPACE(fe_isnonzero)
    21. 

  21. #define fe_isnegative CRYPTO_NAMESPACE(fe_isnegative)
    22. 

  22. #define fe_0 CRYPTO_NAMESPACE(fe_0)
    23. 

  23. #define fe_1 CRYPTO_NAMESPACE(fe_1)
    24. 

  24. #define fe_cswap CRYPTO_NAMESPACE(fe_cswap)
    25. 

  25. #define fe_cmov CRYPTO_NAMESPACE(fe_cmov)
    26. 

  26. #define fe_add CRYPTO_NAMESPACE(fe_add)
    27. 

  27. #define fe_sub CRYPTO_NAMESPACE(fe_sub)
    28. 

  28. #define fe_neg CRYPTO_NAMESPACE(fe_neg)
    29. 

  29. #define fe_mul CRYPTO_NAMESPACE(fe_mul)
    30. 

  30. #define fe_sq CRYPTO_NAMESPACE(fe_sq)
    31. 

  31. #define fe_sq2 CRYPTO_NAMESPACE(fe_sq2)
    32. 

  32. #define fe_invert CRYPTO_NAMESPACE(fe_invert)
    33. 

  33. #define fe_batchinvert CRYPTO_NAMESPACE(fe_batchinvert)
    34. 

  34. #define fe_pow22523 CRYPTO_NAMESPACE(fe_pow22523)
    35. 

  35. 

  36. extern void fe_frombytes(fe,const unsigned char *);
    37. 

  37. extern void fe_tobytes(unsigned char *,const fe);
    38. 

  38. 

  39. extern void fe_copy(fe,const fe);
    40. 

  40. extern int fe_isnonzero(const fe);
    41. 

  41. extern int fe_isnegative(const fe);
    42. 

  42. extern void fe_0(fe);
    43. 

  43. extern void fe_1(fe);
    44. 

  44. extern void fe_cswap(fe,fe,unsigned int);
    45. 

  45. extern void fe_cmov(fe,const fe,unsigned int);
    46. 

  46. 

  47. extern void fe_add(fe,const fe,const fe);
    48. 

  48. extern void fe_sub(fe,const fe,const fe);
    49. 

  49. extern void fe_neg(fe,const fe);
    50. 

  50. extern void fe_mul(fe,const fe,const fe);
    51. 

  51. extern void fe_sq(fe,const fe);
    52. 

  52. extern void fe_sq2(fe,const fe);
    53. 

  53. extern void fe_invert(fe,const fe);
    54. 

  54. extern void fe_batchinvert(fe *out,fe *in,fe *tmp,size_t num,size_t shift);
    55. 

  55. extern void fe_pow22523(fe,const fe);
    56. 

  56. 

  57. #endif
    58.