diff options
Diffstat (limited to 'src/libcryptobox/curve25519/fe.h')
| -rw-r--r-- | src/libcryptobox/curve25519/fe.h | 159 |
1 files changed, 100 insertions, 59 deletions
diff --git a/src/libcryptobox/curve25519/fe.h b/src/libcryptobox/curve25519/fe.h index a64206026..44e8b44a6 100644 --- a/src/libcryptobox/curve25519/fe.h +++ b/src/libcryptobox/curve25519/fe.h @@ -18,25 +18,44 @@ #ifndef SRC_LIBCRYPTOBOX_CURVE25519_FE_H_ #define SRC_LIBCRYPTOBOX_CURVE25519_FE_H_ + +#ifdef __cplusplus +extern "C" { +#endif + typedef int32_t fe[10]; -void fe_frombytes(fe,const unsigned char *); -void fe_tobytes(unsigned char *,const fe); - -void fe_copy(fe,const fe); -int fe_isnonzero(const fe); -int fe_isnegative(const fe); -void fe_0(fe); -void fe_1(fe); -void fe_cmov(fe,const fe,unsigned int); -void fe_add(fe,const fe,const fe); -void fe_sub(fe,const fe,const fe); -void fe_neg(fe,const fe); -void fe_mul(fe,const fe,const fe); -void fe_sq(fe,const fe); -void fe_sq2(fe,const fe); -void fe_invert(fe,const fe); -void fe_pow22523(fe,const fe); +void fe_frombytes (fe, const unsigned char *); + +void fe_tobytes (unsigned char *, const fe); + +void fe_copy (fe, const fe); + +int fe_isnonzero (const fe); + +int fe_isnegative (const fe); + +void fe_0 (fe); + +void fe_1 (fe); + +void fe_cmov (fe, const fe, unsigned int); + +void fe_add (fe, const fe, const fe); + +void fe_sub (fe, const fe, const fe); + +void fe_neg (fe, const fe); + +void fe_mul (fe, const fe, const fe); + +void fe_sq (fe, const fe); + +void fe_sq2 (fe, const fe); + +void fe_invert (fe, const fe); + +void fe_pow22523 (fe, const fe); /* ge means group element. @@ -51,68 +70,90 @@ Representations: */ typedef struct { - fe X; - fe Y; - fe Z; + fe X; + fe Y; + fe Z; } ge_p2; typedef struct { - fe X; - fe Y; - fe Z; - fe T; + fe X; + fe Y; + fe Z; + fe T; } ge_p3; typedef struct { - fe X; - fe Y; - fe Z; - fe T; + fe X; + fe Y; + fe Z; + fe T; } ge_p1p1; typedef struct { - fe yplusx; - fe yminusx; - fe xy2d; + fe yplusx; + fe yminusx; + fe xy2d; } ge_precomp; typedef struct { - fe YplusX; - fe YminusX; - fe Z; - fe T2d; + fe YplusX; + fe YminusX; + fe Z; + fe T2d; } ge_cached; -void ge_tobytes(unsigned char *,const ge_p2 *); -void ge_p3_tobytes(unsigned char *,const ge_p3 *); -int ge_frombytes_negate_vartime(ge_p3 *,const unsigned char *); - -void ge_p2_0(ge_p2 *); -void ge_p3_0(ge_p3 *); -void ge_precomp_0(ge_precomp *); -void ge_p3_to_p2(ge_p2 *,const ge_p3 *); -void ge_p3_to_cached(ge_cached *,const ge_p3 *); -void ge_p1p1_to_p2(ge_p2 *,const ge_p1p1 *); -void ge_p1p1_to_p3(ge_p3 *,const ge_p1p1 *); -void ge_p2_dbl(ge_p1p1 *,const ge_p2 *); -void ge_p3_dbl(ge_p1p1 *,const ge_p3 *); - -void ge_madd(ge_p1p1 *,const ge_p3 *,const ge_precomp *); -void ge_msub(ge_p1p1 *,const ge_p3 *,const ge_precomp *); -void ge_add(ge_p1p1 *,const ge_p3 *,const ge_cached *); -void ge_sub(ge_p1p1 *,const ge_p3 *,const ge_cached *); -void ge_scalarmult_base(ge_p3 *,const unsigned char *); -void ge_double_scalarmult_vartime(ge_p2 *,const unsigned char *,const ge_p3 *,const unsigned char *); -void ge_scalarmult_vartime(ge_p3 *,const unsigned char *,const ge_p3 *); -int verify_32(const unsigned char *x, const unsigned char *y); +void ge_tobytes (unsigned char *, const ge_p2 *); + +void ge_p3_tobytes (unsigned char *, const ge_p3 *); + +int ge_frombytes_negate_vartime (ge_p3 *, const unsigned char *); + +void ge_p2_0 (ge_p2 *); + +void ge_p3_0 (ge_p3 *); + +void ge_precomp_0 (ge_precomp *); + +void ge_p3_to_p2 (ge_p2 *, const ge_p3 *); + +void ge_p3_to_cached (ge_cached *, const ge_p3 *); + +void ge_p1p1_to_p2 (ge_p2 *, const ge_p1p1 *); + +void ge_p1p1_to_p3 (ge_p3 *, const ge_p1p1 *); + +void ge_p2_dbl (ge_p1p1 *, const ge_p2 *); + +void ge_p3_dbl (ge_p1p1 *, const ge_p3 *); + +void ge_madd (ge_p1p1 *, const ge_p3 *, const ge_precomp *); + +void ge_msub (ge_p1p1 *, const ge_p3 *, const ge_precomp *); + +void ge_add (ge_p1p1 *, const ge_p3 *, const ge_cached *); + +void ge_sub (ge_p1p1 *, const ge_p3 *, const ge_cached *); + +void ge_scalarmult_base (ge_p3 *, const unsigned char *); + +void ge_double_scalarmult_vartime (ge_p2 *, const unsigned char *, const ge_p3 *, const unsigned char *); + +void ge_scalarmult_vartime (ge_p3 *, const unsigned char *, const ge_p3 *); + +int verify_32 (const unsigned char *x, const unsigned char *y); /* The set of scalars is \Z/l where l = 2^252 + 27742317777372353535851937790883648493. */ -void sc_reduce(unsigned char *); -void sc_muladd(unsigned char *,const unsigned char *,const unsigned char *,const unsigned char *); +void sc_reduce (unsigned char *); + +void sc_muladd (unsigned char *, const unsigned char *, const unsigned char *, const unsigned char *); + +#ifdef __cplusplus +} +#endif #endif /* SRC_LIBCRYPTOBOX_CURVE25519_FE_H_ */ |