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161 lines
5.4 KiB
C
161 lines
5.4 KiB
C
#ifndef curve25519_ref10_H
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#define curve25519_ref10_H
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#include <stddef.h>
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#include <stdint.h>
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#define fe crypto_core_curve25519_ref10_fe
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typedef int32_t fe[10];
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/*
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fe means field element.
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Here the field is \Z/(2^255-19).
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An element t, entries t[0]...t[9], represents the integer
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t[0]+2^26 t[1]+2^51 t[2]+2^77 t[3]+2^102 t[4]+...+2^230 t[9].
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Bounds on each t[i] vary depending on context.
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*/
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#define fe_frombytes crypto_core_curve25519_ref10_fe_frombytes
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#define fe_tobytes crypto_core_curve25519_ref10_fe_tobytes
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#define fe_copy crypto_core_curve25519_ref10_fe_copy
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#define fe_isnonzero crypto_core_curve25519_ref10_fe_isnonzero
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#define fe_isnegative crypto_core_curve25519_ref10_fe_isnegative
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#define fe_0 crypto_core_curve25519_ref10_fe_0
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#define fe_1 crypto_core_curve25519_ref10_fe_1
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#define fe_cmov crypto_core_curve25519_ref10_fe_cmov
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#define fe_add crypto_core_curve25519_ref10_fe_add
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#define fe_sub crypto_core_curve25519_ref10_fe_sub
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#define fe_neg crypto_core_curve25519_ref10_fe_neg
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#define fe_mul crypto_core_curve25519_ref10_fe_mul
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#define fe_sq crypto_core_curve25519_ref10_fe_sq
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#define fe_sq2 crypto_core_curve25519_ref10_fe_sq2
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#define fe_invert crypto_core_curve25519_ref10_fe_invert
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#define fe_pow22523 crypto_core_curve25519_ref10_fe_pow22523
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extern void fe_frombytes(fe,const unsigned char *);
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extern void fe_tobytes(unsigned char *,const fe);
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extern void fe_copy(fe,const fe);
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extern int fe_isnonzero(const fe);
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extern int fe_isnegative(const fe);
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extern void fe_0(fe);
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extern void fe_1(fe);
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extern void fe_cmov(fe,const fe,unsigned int);
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extern void fe_add(fe,const fe,const fe);
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extern void fe_sub(fe,const fe,const fe);
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extern void fe_neg(fe,const fe);
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extern void fe_mul(fe,const fe,const fe);
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extern void fe_sq(fe,const fe);
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extern void fe_sq2(fe,const fe);
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extern void fe_invert(fe,const fe);
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extern void fe_pow22523(fe,const fe);
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/*
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ge means group element.
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*
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Here the group is the set of pairs (x,y) of field elements (see fe.h)
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satisfying -x^2 + y^2 = 1 + d x^2y^2
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where d = -121665/121666.
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*
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Representations:
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ge_p2 (projective): (X:Y:Z) satisfying x=X/Z, y=Y/Z
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ge_p3 (extended): (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT
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ge_p1p1 (completed): ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T
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ge_precomp (Duif): (y+x,y-x,2dxy)
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*/
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#define ge_p2 crypto_core_curve25519_ref10_ge_p2
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typedef struct {
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fe X;
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fe Y;
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fe Z;
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} ge_p2;
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#define ge_p3 crypto_core_curve25519_ref10_ge_p3
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typedef struct {
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fe X;
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fe Y;
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fe Z;
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fe T;
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} ge_p3;
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#define ge_p1p1 crypto_core_curve25519_ref10_ge_p1p1
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typedef struct {
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fe X;
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fe Y;
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fe Z;
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fe T;
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} ge_p1p1;
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#define ge_precomp crypto_core_curve25519_ref10_ge_precomp
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typedef struct {
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fe yplusx;
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fe yminusx;
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fe xy2d;
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} ge_precomp;
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#define ge_cached crypto_core_curve25519_ref10_ge_cached
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typedef struct {
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fe YplusX;
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fe YminusX;
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fe Z;
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fe T2d;
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} ge_cached;
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#define ge_frombytes_negate_vartime crypto_core_curve25519_ref10_ge_frombytes_negate_vartime
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#define ge_tobytes crypto_core_curve25519_ref10_ge_tobytes
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#define ge_p3_tobytes crypto_core_curve25519_ref10_ge_p3_tobytes
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#define ge_p2_0 crypto_core_curve25519_ref10_ge_p2_0
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#define ge_p3_0 crypto_core_curve25519_ref10_ge_p3_0
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#define ge_precomp_0 crypto_core_curve25519_ref10_ge_precomp_0
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#define ge_p3_to_p2 crypto_core_curve25519_ref10_ge_p3_to_p2
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#define ge_p3_to_cached crypto_core_curve25519_ref10_ge_p3_to_cached
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#define ge_p1p1_to_p2 crypto_core_curve25519_ref10_ge_p1p1_to_p2
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#define ge_p1p1_to_p3 crypto_core_curve25519_ref10_ge_p1p1_to_p3
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#define ge_p2_dbl crypto_core_curve25519_ref10_ge_p2_dbl
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#define ge_p3_dbl crypto_core_curve25519_ref10_ge_p3_dbl
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#define ge_madd crypto_core_curve25519_ref10_ge_madd
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#define ge_msub crypto_core_curve25519_ref10_ge_msub
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#define ge_add crypto_core_curve25519_ref10_ge_add
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#define ge_sub crypto_core_curve25519_ref10_ge_sub
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#define ge_scalarmult_base crypto_core_curve25519_ref10_ge_scalarmult_base
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#define ge_double_scalarmult_vartime crypto_core_curve25519_ref10_ge_double_scalarmult_vartime
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#define ge_scalarmult_vartime crypto_core_curve25519_ref10_ge_scalarmult_vartime
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extern void ge_tobytes(unsigned char *,const ge_p2 *);
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extern void ge_p3_tobytes(unsigned char *,const ge_p3 *);
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extern int ge_frombytes_negate_vartime(ge_p3 *,const unsigned char *);
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extern void ge_p2_0(ge_p2 *);
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extern void ge_p3_0(ge_p3 *);
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extern void ge_precomp_0(ge_precomp *);
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extern void ge_p3_to_p2(ge_p2 *,const ge_p3 *);
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extern void ge_p3_to_cached(ge_cached *,const ge_p3 *);
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extern void ge_p1p1_to_p2(ge_p2 *,const ge_p1p1 *);
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extern void ge_p1p1_to_p3(ge_p3 *,const ge_p1p1 *);
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extern void ge_p2_dbl(ge_p1p1 *,const ge_p2 *);
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extern void ge_p3_dbl(ge_p1p1 *,const ge_p3 *);
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extern void ge_madd(ge_p1p1 *,const ge_p3 *,const ge_precomp *);
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extern void ge_msub(ge_p1p1 *,const ge_p3 *,const ge_precomp *);
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extern void ge_add(ge_p1p1 *,const ge_p3 *,const ge_cached *);
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extern void ge_sub(ge_p1p1 *,const ge_p3 *,const ge_cached *);
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extern void ge_scalarmult_base(ge_p3 *,const unsigned char *);
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extern void ge_double_scalarmult_vartime(ge_p2 *,const unsigned char *,const ge_p3 *,const unsigned char *);
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extern void ge_scalarmult_vartime(ge_p3 *,const unsigned char *,const ge_p3 *);
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/*
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The set of scalars is \Z/l
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where l = 2^252 + 27742317777372353535851937790883648493.
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*/
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#define sc_reduce crypto_core_curve25519_ref10_sc_reduce
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#define sc_muladd crypto_core_curve25519_ref10_sc_muladd
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extern void sc_reduce(unsigned char *);
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extern void sc_muladd(unsigned char *,const unsigned char *,const unsigned char *,const unsigned char *);
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#endif
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