forked from lthn/blockchain
156 lines
4.3 KiB
C
156 lines
4.3 KiB
C
// Copyright (c) 2018-2021 Zano Project
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// Copyright (c) 2012-2013 The Cryptonote developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#pragma once
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#include <stddef.h> // size_t
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/* From fe.h */
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typedef int32_t fe[10];
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/* From ge.h */
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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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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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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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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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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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/* From ge_add.c */
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void ge_add(ge_p1p1 *, const ge_p3 *, const ge_cached *);
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/* From ge_double_scalarmult.c, modified */
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typedef ge_cached ge_dsmp[8];
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extern const ge_precomp ge_Bi[8];
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void ge_dsm_precomp(ge_dsmp r, const ge_p3 *s);
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void ge_double_scalarmult_base_vartime(ge_p2 *, const unsigned char *, const ge_p3 *, const unsigned char *);
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/* From ge_frombytes.c, modified */
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extern const fe fe_sqrtm1;
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extern const fe fe_d;
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extern const fe fe_d2;
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int ge_frombytes_vartime(ge_p3 *, const unsigned char *);
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/* From ge_p1p1_to_p2.c */
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void ge_p1p1_to_p2(ge_p2 *, const ge_p1p1 *);
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/* From ge_p1p1_to_p3.c */
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void ge_p1p1_to_p3(ge_p3 *, const ge_p1p1 *);
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/* From ge_p2_dbl.c */
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void ge_p2_dbl(ge_p1p1 *, const ge_p2 *);
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/* From ge_p3_to_cached.c */
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extern const fe fe_d2;
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void ge_p3_to_cached(ge_cached *, const ge_p3 *);
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/* From ge_p3_to_p2.c */
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void ge_p3_to_p2(ge_p2 *, const ge_p3 *);
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/* From ge_p3_tobytes.c */
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void ge_p3_tobytes(unsigned char *, const ge_p3 *);
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/* From ge_scalarmult_base.c */
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extern const ge_precomp ge_base[32][8];
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void ge_scalarmult_base(ge_p3 *, const unsigned char *);
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/* From ge_tobytes.c */
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void ge_tobytes(unsigned char *, const ge_p2 *);
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/* From sc_reduce.c */
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void sc_reduce(unsigned char *);
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/* New code */
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void ge_scalarmult(ge_p2 *, const unsigned char *, const ge_p3 *);
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void ge_scalarmult_p3(ge_p3 *, const unsigned char *, const ge_p3 *);
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void ge_double_scalarmult_precomp_vartime(ge_p2 *, const unsigned char *, const ge_p3 *, const unsigned char *, const ge_dsmp);
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void ge_mul8(ge_p1p1 *, const ge_p2 *);
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void ge_mul8_p3(ge_p3 *, const ge_p3 *);
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void ge_fromfe_frombytes_vartime(ge_p2 *, const unsigned char *);
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void ge_p2_to_p3(ge_p3 *r, const ge_p2 *t);
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void ge_bytes_hash_to_ec(ge_p3 *, const void *, size_t);
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void ge_bytes_hash_to_ec_32(ge_p3 *, const unsigned char *);
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void ge_cached_to_p2(ge_p2 *r, const ge_cached *c);
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void ge_madd(ge_p1p1 *r, const ge_p3 *p, const ge_precomp *q);
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void ge_p3_0(ge_p3 *h);
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void ge_sub(ge_p1p1 *, const ge_p3 *, const ge_cached *);
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void ge_double_scalarmult_base_vartime_p3(ge_p3 *r, const unsigned char *a, const ge_p3 *A, const unsigned char *b);
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void ge_scalarmult_vartime_p3(ge_p3 *r, const unsigned char *a, const ge_p3 *A);
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void ge_scalarmult_vartime_p3_v2(ge_p3 *r, const unsigned char *a, const ge_p3 *A);
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void ge_scalarmult_base_vartime(ge_p3 *h, const unsigned char *a);
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/* precomp_data[i][j] = (j + 1) * 256^i * G */
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typedef ge_precomp (precomp_data_t)[32][8];
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void ge_scalarmult_precomp_vartime(ge_p3 *h, const precomp_data_t base_precomp, const unsigned char *a);
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void ge_p3_to_precomp(ge_precomp *r, const ge_p3* p);
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extern const fe fe_ma2;
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extern const fe fe_ma;
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extern const fe fe_fffb1;
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extern const fe fe_fffb2;
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extern const fe fe_fffb3;
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extern const fe fe_fffb4;
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void sc_0(unsigned char *);
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void sc_reduce32(unsigned char *);
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void sc_add(unsigned char *, const unsigned char *, const unsigned char *);
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void sc_sub(unsigned char *, const unsigned char *, const unsigned char *);
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void sc_mulsub(unsigned char *, const unsigned char *, const unsigned char *, const unsigned char *);
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void sc_mul(unsigned char *, const unsigned char *, const unsigned char *);
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void sc_muladd(unsigned char* s, const unsigned char* a, const unsigned char* b, const unsigned char* c);
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int sc_check(const unsigned char *);
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int sc_isnonzero(const unsigned char *); /* Doesn't normalize */
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void sc_invert(unsigned char*, const unsigned char*);
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void fe_sq(fe h, const fe f);
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int fe_isnonzero(const fe f);
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void fe_add(fe h, const fe f, const fe g);
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void fe_sub(fe h, const fe f, const fe g);
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void fe_mul(fe, const fe, const fe);
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void fe_frombytes(fe h, const unsigned char *s);
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void fe_invert(fe out, const fe z);
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void fe_tobytes(unsigned char *s, const fe h);
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int fe_isnegative(const fe f);
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