forked from lthn/blockchain
crypto: libsodium license added, faster sc_mul implementation
This commit is contained in:
sowle
parent
f05f533a0c
commit
f70f58ffc3
2 changed files with 497 additions and 3 deletions
|
|
@ -1,6 +1,28 @@
|
|||
// Copyright (c) 2018-2020 Zano Project
|
||||
// Copyright (c) 2012-2013 The Cryptonote developers
|
||||
// Distributed under the MIT/X11 software license, see the accompanying
|
||||
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
||||
//
|
||||
// This file contains pieces of code from libsodium project.
|
||||
// libsodium is licensed under the ISC License:
|
||||
/*
|
||||
* ISC License
|
||||
*
|
||||
* Copyright (c) 2013-2020
|
||||
* Frank Denis <j at pureftpd dot org>
|
||||
*
|
||||
* Permission to use, copy, modify, and/or distribute this software for any
|
||||
* purpose with or without fee is hereby granted, provided that the above
|
||||
* copyright notice and this permission notice appear in all copies.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||||
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
||||
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
||||
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||||
*/
|
||||
|
||||
#include <assert.h>
|
||||
#include <stdint.h>
|
||||
|
|
@ -3014,8 +3036,8 @@ void fe_frombytes(fe h, const unsigned char *s)
|
|||
h[9] = h9;
|
||||
}
|
||||
|
||||
// Implemented using sc_mulsub
|
||||
// TODO: make more efficient implementation
|
||||
/*
|
||||
// Old naive and slow implementation using sc_mulsub
|
||||
void sc_mul(unsigned char *s, const unsigned char *a, const unsigned char *b)
|
||||
{
|
||||
unsigned char c[32];
|
||||
|
|
@ -3025,3 +3047,475 @@ void sc_mul(unsigned char *s, const unsigned char *a, const unsigned char *b)
|
|||
// s = c - ab
|
||||
sc_mulsub(s, neg_a, b, c);
|
||||
}
|
||||
*/
|
||||
|
||||
/* libsodium/crypto_core/ed25519/ref10/ed25519_ref10.c */
|
||||
/*
|
||||
Input:
|
||||
a[0]+256*a[1]+...+256^31*a[31] = a
|
||||
b[0]+256*b[1]+...+256^31*b[31] = b
|
||||
*
|
||||
Output:
|
||||
s[0]+256*s[1]+...+256^31*s[31] = (ab) mod l
|
||||
where l = 2^252 + 27742317777372353535851937790883648493.
|
||||
*/
|
||||
void sc_mul(unsigned char* s, const unsigned char* a, const unsigned char* b)
|
||||
{
|
||||
int64_t a0 = 2097151 & load_3(a);
|
||||
int64_t a1 = 2097151 & (load_4(a + 2) >> 5);
|
||||
int64_t a2 = 2097151 & (load_3(a + 5) >> 2);
|
||||
int64_t a3 = 2097151 & (load_4(a + 7) >> 7);
|
||||
int64_t a4 = 2097151 & (load_4(a + 10) >> 4);
|
||||
int64_t a5 = 2097151 & (load_3(a + 13) >> 1);
|
||||
int64_t a6 = 2097151 & (load_4(a + 15) >> 6);
|
||||
int64_t a7 = 2097151 & (load_3(a + 18) >> 3);
|
||||
int64_t a8 = 2097151 & load_3(a + 21);
|
||||
int64_t a9 = 2097151 & (load_4(a + 23) >> 5);
|
||||
int64_t a10 = 2097151 & (load_3(a + 26) >> 2);
|
||||
int64_t a11 = (load_4(a + 28) >> 7);
|
||||
|
||||
int64_t b0 = 2097151 & load_3(b);
|
||||
int64_t b1 = 2097151 & (load_4(b + 2) >> 5);
|
||||
int64_t b2 = 2097151 & (load_3(b + 5) >> 2);
|
||||
int64_t b3 = 2097151 & (load_4(b + 7) >> 7);
|
||||
int64_t b4 = 2097151 & (load_4(b + 10) >> 4);
|
||||
int64_t b5 = 2097151 & (load_3(b + 13) >> 1);
|
||||
int64_t b6 = 2097151 & (load_4(b + 15) >> 6);
|
||||
int64_t b7 = 2097151 & (load_3(b + 18) >> 3);
|
||||
int64_t b8 = 2097151 & load_3(b + 21);
|
||||
int64_t b9 = 2097151 & (load_4(b + 23) >> 5);
|
||||
int64_t b10 = 2097151 & (load_3(b + 26) >> 2);
|
||||
int64_t b11 = (load_4(b + 28) >> 7);
|
||||
|
||||
int64_t s0;
|
||||
int64_t s1;
|
||||
int64_t s2;
|
||||
int64_t s3;
|
||||
int64_t s4;
|
||||
int64_t s5;
|
||||
int64_t s6;
|
||||
int64_t s7;
|
||||
int64_t s8;
|
||||
int64_t s9;
|
||||
int64_t s10;
|
||||
int64_t s11;
|
||||
int64_t s12;
|
||||
int64_t s13;
|
||||
int64_t s14;
|
||||
int64_t s15;
|
||||
int64_t s16;
|
||||
int64_t s17;
|
||||
int64_t s18;
|
||||
int64_t s19;
|
||||
int64_t s20;
|
||||
int64_t s21;
|
||||
int64_t s22;
|
||||
int64_t s23;
|
||||
|
||||
int64_t carry0;
|
||||
int64_t carry1;
|
||||
int64_t carry2;
|
||||
int64_t carry3;
|
||||
int64_t carry4;
|
||||
int64_t carry5;
|
||||
int64_t carry6;
|
||||
int64_t carry7;
|
||||
int64_t carry8;
|
||||
int64_t carry9;
|
||||
int64_t carry10;
|
||||
int64_t carry11;
|
||||
int64_t carry12;
|
||||
int64_t carry13;
|
||||
int64_t carry14;
|
||||
int64_t carry15;
|
||||
int64_t carry16;
|
||||
int64_t carry17;
|
||||
int64_t carry18;
|
||||
int64_t carry19;
|
||||
int64_t carry20;
|
||||
int64_t carry21;
|
||||
int64_t carry22;
|
||||
|
||||
s0 = a0 * b0;
|
||||
s1 = a0 * b1 + a1 * b0;
|
||||
s2 = a0 * b2 + a1 * b1 + a2 * b0;
|
||||
s3 = a0 * b3 + a1 * b2 + a2 * b1 + a3 * b0;
|
||||
s4 = a0 * b4 + a1 * b3 + a2 * b2 + a3 * b1 + a4 * b0;
|
||||
s5 = a0 * b5 + a1 * b4 + a2 * b3 + a3 * b2 + a4 * b1 + a5 * b0;
|
||||
s6 = a0 * b6 + a1 * b5 + a2 * b4 + a3 * b3 + a4 * b2 + a5 * b1 + a6 * b0;
|
||||
s7 = a0 * b7 + a1 * b6 + a2 * b5 + a3 * b4 + a4 * b3 + a5 * b2 +
|
||||
a6 * b1 + a7 * b0;
|
||||
s8 = a0 * b8 + a1 * b7 + a2 * b6 + a3 * b5 + a4 * b4 + a5 * b3 +
|
||||
a6 * b2 + a7 * b1 + a8 * b0;
|
||||
s9 = a0 * b9 + a1 * b8 + a2 * b7 + a3 * b6 + a4 * b5 + a5 * b4 +
|
||||
a6 * b3 + a7 * b2 + a8 * b1 + a9 * b0;
|
||||
s10 = a0 * b10 + a1 * b9 + a2 * b8 + a3 * b7 + a4 * b6 + a5 * b5 +
|
||||
a6 * b4 + a7 * b3 + a8 * b2 + a9 * b1 + a10 * b0;
|
||||
s11 = a0 * b11 + a1 * b10 + a2 * b9 + a3 * b8 + a4 * b7 + a5 * b6 +
|
||||
a6 * b5 + a7 * b4 + a8 * b3 + a9 * b2 + a10 * b1 + a11 * b0;
|
||||
s12 = a1 * b11 + a2 * b10 + a3 * b9 + a4 * b8 + a5 * b7 + a6 * b6 +
|
||||
a7 * b5 + a8 * b4 + a9 * b3 + a10 * b2 + a11 * b1;
|
||||
s13 = a2 * b11 + a3 * b10 + a4 * b9 + a5 * b8 + a6 * b7 + a7 * b6 +
|
||||
a8 * b5 + a9 * b4 + a10 * b3 + a11 * b2;
|
||||
s14 = a3 * b11 + a4 * b10 + a5 * b9 + a6 * b8 + a7 * b7 + a8 * b6 +
|
||||
a9 * b5 + a10 * b4 + a11 * b3;
|
||||
s15 = a4 * b11 + a5 * b10 + a6 * b9 + a7 * b8 + a8 * b7 + a9 * b6 +
|
||||
a10 * b5 + a11 * b4;
|
||||
s16 =
|
||||
a5 * b11 + a6 * b10 + a7 * b9 + a8 * b8 + a9 * b7 + a10 * b6 + a11 * b5;
|
||||
s17 = a6 * b11 + a7 * b10 + a8 * b9 + a9 * b8 + a10 * b7 + a11 * b6;
|
||||
s18 = a7 * b11 + a8 * b10 + a9 * b9 + a10 * b8 + a11 * b7;
|
||||
s19 = a8 * b11 + a9 * b10 + a10 * b9 + a11 * b8;
|
||||
s20 = a9 * b11 + a10 * b10 + a11 * b9;
|
||||
s21 = a10 * b11 + a11 * b10;
|
||||
s22 = a11 * b11;
|
||||
s23 = 0;
|
||||
|
||||
carry0 = (s0 + (int64_t)(1L << 20)) >> 21;
|
||||
s1 += carry0;
|
||||
s0 -= carry0 * ((uint64_t)1L << 21);
|
||||
carry2 = (s2 + (int64_t)(1L << 20)) >> 21;
|
||||
s3 += carry2;
|
||||
s2 -= carry2 * ((uint64_t)1L << 21);
|
||||
carry4 = (s4 + (int64_t)(1L << 20)) >> 21;
|
||||
s5 += carry4;
|
||||
s4 -= carry4 * ((uint64_t)1L << 21);
|
||||
carry6 = (s6 + (int64_t)(1L << 20)) >> 21;
|
||||
s7 += carry6;
|
||||
s6 -= carry6 * ((uint64_t)1L << 21);
|
||||
carry8 = (s8 + (int64_t)(1L << 20)) >> 21;
|
||||
s9 += carry8;
|
||||
s8 -= carry8 * ((uint64_t)1L << 21);
|
||||
carry10 = (s10 + (int64_t)(1L << 20)) >> 21;
|
||||
s11 += carry10;
|
||||
s10 -= carry10 * ((uint64_t)1L << 21);
|
||||
carry12 = (s12 + (int64_t)(1L << 20)) >> 21;
|
||||
s13 += carry12;
|
||||
s12 -= carry12 * ((uint64_t)1L << 21);
|
||||
carry14 = (s14 + (int64_t)(1L << 20)) >> 21;
|
||||
s15 += carry14;
|
||||
s14 -= carry14 * ((uint64_t)1L << 21);
|
||||
carry16 = (s16 + (int64_t)(1L << 20)) >> 21;
|
||||
s17 += carry16;
|
||||
s16 -= carry16 * ((uint64_t)1L << 21);
|
||||
carry18 = (s18 + (int64_t)(1L << 20)) >> 21;
|
||||
s19 += carry18;
|
||||
s18 -= carry18 * ((uint64_t)1L << 21);
|
||||
carry20 = (s20 + (int64_t)(1L << 20)) >> 21;
|
||||
s21 += carry20;
|
||||
s20 -= carry20 * ((uint64_t)1L << 21);
|
||||
carry22 = (s22 + (int64_t)(1L << 20)) >> 21;
|
||||
s23 += carry22;
|
||||
s22 -= carry22 * ((uint64_t)1L << 21);
|
||||
|
||||
carry1 = (s1 + (int64_t)(1L << 20)) >> 21;
|
||||
s2 += carry1;
|
||||
s1 -= carry1 * ((uint64_t)1L << 21);
|
||||
carry3 = (s3 + (int64_t)(1L << 20)) >> 21;
|
||||
s4 += carry3;
|
||||
s3 -= carry3 * ((uint64_t)1L << 21);
|
||||
carry5 = (s5 + (int64_t)(1L << 20)) >> 21;
|
||||
s6 += carry5;
|
||||
s5 -= carry5 * ((uint64_t)1L << 21);
|
||||
carry7 = (s7 + (int64_t)(1L << 20)) >> 21;
|
||||
s8 += carry7;
|
||||
s7 -= carry7 * ((uint64_t)1L << 21);
|
||||
carry9 = (s9 + (int64_t)(1L << 20)) >> 21;
|
||||
s10 += carry9;
|
||||
s9 -= carry9 * ((uint64_t)1L << 21);
|
||||
carry11 = (s11 + (int64_t)(1L << 20)) >> 21;
|
||||
s12 += carry11;
|
||||
s11 -= carry11 * ((uint64_t)1L << 21);
|
||||
carry13 = (s13 + (int64_t)(1L << 20)) >> 21;
|
||||
s14 += carry13;
|
||||
s13 -= carry13 * ((uint64_t)1L << 21);
|
||||
carry15 = (s15 + (int64_t)(1L << 20)) >> 21;
|
||||
s16 += carry15;
|
||||
s15 -= carry15 * ((uint64_t)1L << 21);
|
||||
carry17 = (s17 + (int64_t)(1L << 20)) >> 21;
|
||||
s18 += carry17;
|
||||
s17 -= carry17 * ((uint64_t)1L << 21);
|
||||
carry19 = (s19 + (int64_t)(1L << 20)) >> 21;
|
||||
s20 += carry19;
|
||||
s19 -= carry19 * ((uint64_t)1L << 21);
|
||||
carry21 = (s21 + (int64_t)(1L << 20)) >> 21;
|
||||
s22 += carry21;
|
||||
s21 -= carry21 * ((uint64_t)1L << 21);
|
||||
|
||||
s11 += s23 * 666643;
|
||||
s12 += s23 * 470296;
|
||||
s13 += s23 * 654183;
|
||||
s14 -= s23 * 997805;
|
||||
s15 += s23 * 136657;
|
||||
s16 -= s23 * 683901;
|
||||
|
||||
s10 += s22 * 666643;
|
||||
s11 += s22 * 470296;
|
||||
s12 += s22 * 654183;
|
||||
s13 -= s22 * 997805;
|
||||
s14 += s22 * 136657;
|
||||
s15 -= s22 * 683901;
|
||||
|
||||
s9 += s21 * 666643;
|
||||
s10 += s21 * 470296;
|
||||
s11 += s21 * 654183;
|
||||
s12 -= s21 * 997805;
|
||||
s13 += s21 * 136657;
|
||||
s14 -= s21 * 683901;
|
||||
|
||||
s8 += s20 * 666643;
|
||||
s9 += s20 * 470296;
|
||||
s10 += s20 * 654183;
|
||||
s11 -= s20 * 997805;
|
||||
s12 += s20 * 136657;
|
||||
s13 -= s20 * 683901;
|
||||
|
||||
s7 += s19 * 666643;
|
||||
s8 += s19 * 470296;
|
||||
s9 += s19 * 654183;
|
||||
s10 -= s19 * 997805;
|
||||
s11 += s19 * 136657;
|
||||
s12 -= s19 * 683901;
|
||||
|
||||
s6 += s18 * 666643;
|
||||
s7 += s18 * 470296;
|
||||
s8 += s18 * 654183;
|
||||
s9 -= s18 * 997805;
|
||||
s10 += s18 * 136657;
|
||||
s11 -= s18 * 683901;
|
||||
|
||||
carry6 = (s6 + (int64_t)(1L << 20)) >> 21;
|
||||
s7 += carry6;
|
||||
s6 -= carry6 * ((uint64_t)1L << 21);
|
||||
carry8 = (s8 + (int64_t)(1L << 20)) >> 21;
|
||||
s9 += carry8;
|
||||
s8 -= carry8 * ((uint64_t)1L << 21);
|
||||
carry10 = (s10 + (int64_t)(1L << 20)) >> 21;
|
||||
s11 += carry10;
|
||||
s10 -= carry10 * ((uint64_t)1L << 21);
|
||||
carry12 = (s12 + (int64_t)(1L << 20)) >> 21;
|
||||
s13 += carry12;
|
||||
s12 -= carry12 * ((uint64_t)1L << 21);
|
||||
carry14 = (s14 + (int64_t)(1L << 20)) >> 21;
|
||||
s15 += carry14;
|
||||
s14 -= carry14 * ((uint64_t)1L << 21);
|
||||
carry16 = (s16 + (int64_t)(1L << 20)) >> 21;
|
||||
s17 += carry16;
|
||||
s16 -= carry16 * ((uint64_t)1L << 21);
|
||||
|
||||
carry7 = (s7 + (int64_t)(1L << 20)) >> 21;
|
||||
s8 += carry7;
|
||||
s7 -= carry7 * ((uint64_t)1L << 21);
|
||||
carry9 = (s9 + (int64_t)(1L << 20)) >> 21;
|
||||
s10 += carry9;
|
||||
s9 -= carry9 * ((uint64_t)1L << 21);
|
||||
carry11 = (s11 + (int64_t)(1L << 20)) >> 21;
|
||||
s12 += carry11;
|
||||
s11 -= carry11 * ((uint64_t)1L << 21);
|
||||
carry13 = (s13 + (int64_t)(1L << 20)) >> 21;
|
||||
s14 += carry13;
|
||||
s13 -= carry13 * ((uint64_t)1L << 21);
|
||||
carry15 = (s15 + (int64_t)(1L << 20)) >> 21;
|
||||
s16 += carry15;
|
||||
s15 -= carry15 * ((uint64_t)1L << 21);
|
||||
|
||||
s5 += s17 * 666643;
|
||||
s6 += s17 * 470296;
|
||||
s7 += s17 * 654183;
|
||||
s8 -= s17 * 997805;
|
||||
s9 += s17 * 136657;
|
||||
s10 -= s17 * 683901;
|
||||
|
||||
s4 += s16 * 666643;
|
||||
s5 += s16 * 470296;
|
||||
s6 += s16 * 654183;
|
||||
s7 -= s16 * 997805;
|
||||
s8 += s16 * 136657;
|
||||
s9 -= s16 * 683901;
|
||||
|
||||
s3 += s15 * 666643;
|
||||
s4 += s15 * 470296;
|
||||
s5 += s15 * 654183;
|
||||
s6 -= s15 * 997805;
|
||||
s7 += s15 * 136657;
|
||||
s8 -= s15 * 683901;
|
||||
|
||||
s2 += s14 * 666643;
|
||||
s3 += s14 * 470296;
|
||||
s4 += s14 * 654183;
|
||||
s5 -= s14 * 997805;
|
||||
s6 += s14 * 136657;
|
||||
s7 -= s14 * 683901;
|
||||
|
||||
s1 += s13 * 666643;
|
||||
s2 += s13 * 470296;
|
||||
s3 += s13 * 654183;
|
||||
s4 -= s13 * 997805;
|
||||
s5 += s13 * 136657;
|
||||
s6 -= s13 * 683901;
|
||||
|
||||
s0 += s12 * 666643;
|
||||
s1 += s12 * 470296;
|
||||
s2 += s12 * 654183;
|
||||
s3 -= s12 * 997805;
|
||||
s4 += s12 * 136657;
|
||||
s5 -= s12 * 683901;
|
||||
s12 = 0;
|
||||
|
||||
carry0 = (s0 + (int64_t)(1L << 20)) >> 21;
|
||||
s1 += carry0;
|
||||
s0 -= carry0 * ((uint64_t)1L << 21);
|
||||
carry2 = (s2 + (int64_t)(1L << 20)) >> 21;
|
||||
s3 += carry2;
|
||||
s2 -= carry2 * ((uint64_t)1L << 21);
|
||||
carry4 = (s4 + (int64_t)(1L << 20)) >> 21;
|
||||
s5 += carry4;
|
||||
s4 -= carry4 * ((uint64_t)1L << 21);
|
||||
carry6 = (s6 + (int64_t)(1L << 20)) >> 21;
|
||||
s7 += carry6;
|
||||
s6 -= carry6 * ((uint64_t)1L << 21);
|
||||
carry8 = (s8 + (int64_t)(1L << 20)) >> 21;
|
||||
s9 += carry8;
|
||||
s8 -= carry8 * ((uint64_t)1L << 21);
|
||||
carry10 = (s10 + (int64_t)(1L << 20)) >> 21;
|
||||
s11 += carry10;
|
||||
s10 -= carry10 * ((uint64_t)1L << 21);
|
||||
|
||||
carry1 = (s1 + (int64_t)(1L << 20)) >> 21;
|
||||
s2 += carry1;
|
||||
s1 -= carry1 * ((uint64_t)1L << 21);
|
||||
carry3 = (s3 + (int64_t)(1L << 20)) >> 21;
|
||||
s4 += carry3;
|
||||
s3 -= carry3 * ((uint64_t)1L << 21);
|
||||
carry5 = (s5 + (int64_t)(1L << 20)) >> 21;
|
||||
s6 += carry5;
|
||||
s5 -= carry5 * ((uint64_t)1L << 21);
|
||||
carry7 = (s7 + (int64_t)(1L << 20)) >> 21;
|
||||
s8 += carry7;
|
||||
s7 -= carry7 * ((uint64_t)1L << 21);
|
||||
carry9 = (s9 + (int64_t)(1L << 20)) >> 21;
|
||||
s10 += carry9;
|
||||
s9 -= carry9 * ((uint64_t)1L << 21);
|
||||
carry11 = (s11 + (int64_t)(1L << 20)) >> 21;
|
||||
s12 += carry11;
|
||||
s11 -= carry11 * ((uint64_t)1L << 21);
|
||||
|
||||
s0 += s12 * 666643;
|
||||
s1 += s12 * 470296;
|
||||
s2 += s12 * 654183;
|
||||
s3 -= s12 * 997805;
|
||||
s4 += s12 * 136657;
|
||||
s5 -= s12 * 683901;
|
||||
s12 = 0;
|
||||
|
||||
carry0 = s0 >> 21;
|
||||
s1 += carry0;
|
||||
s0 -= carry0 * ((uint64_t)1L << 21);
|
||||
carry1 = s1 >> 21;
|
||||
s2 += carry1;
|
||||
s1 -= carry1 * ((uint64_t)1L << 21);
|
||||
carry2 = s2 >> 21;
|
||||
s3 += carry2;
|
||||
s2 -= carry2 * ((uint64_t)1L << 21);
|
||||
carry3 = s3 >> 21;
|
||||
s4 += carry3;
|
||||
s3 -= carry3 * ((uint64_t)1L << 21);
|
||||
carry4 = s4 >> 21;
|
||||
s5 += carry4;
|
||||
s4 -= carry4 * ((uint64_t)1L << 21);
|
||||
carry5 = s5 >> 21;
|
||||
s6 += carry5;
|
||||
s5 -= carry5 * ((uint64_t)1L << 21);
|
||||
carry6 = s6 >> 21;
|
||||
s7 += carry6;
|
||||
s6 -= carry6 * ((uint64_t)1L << 21);
|
||||
carry7 = s7 >> 21;
|
||||
s8 += carry7;
|
||||
s7 -= carry7 * ((uint64_t)1L << 21);
|
||||
carry8 = s8 >> 21;
|
||||
s9 += carry8;
|
||||
s8 -= carry8 * ((uint64_t)1L << 21);
|
||||
carry9 = s9 >> 21;
|
||||
s10 += carry9;
|
||||
s9 -= carry9 * ((uint64_t)1L << 21);
|
||||
carry10 = s10 >> 21;
|
||||
s11 += carry10;
|
||||
s10 -= carry10 * ((uint64_t)1L << 21);
|
||||
carry11 = s11 >> 21;
|
||||
s12 += carry11;
|
||||
s11 -= carry11 * ((uint64_t)1L << 21);
|
||||
|
||||
s0 += s12 * 666643;
|
||||
s1 += s12 * 470296;
|
||||
s2 += s12 * 654183;
|
||||
s3 -= s12 * 997805;
|
||||
s4 += s12 * 136657;
|
||||
s5 -= s12 * 683901;
|
||||
|
||||
carry0 = s0 >> 21;
|
||||
s1 += carry0;
|
||||
s0 -= carry0 * ((uint64_t)1L << 21);
|
||||
carry1 = s1 >> 21;
|
||||
s2 += carry1;
|
||||
s1 -= carry1 * ((uint64_t)1L << 21);
|
||||
carry2 = s2 >> 21;
|
||||
s3 += carry2;
|
||||
s2 -= carry2 * ((uint64_t)1L << 21);
|
||||
carry3 = s3 >> 21;
|
||||
s4 += carry3;
|
||||
s3 -= carry3 * ((uint64_t)1L << 21);
|
||||
carry4 = s4 >> 21;
|
||||
s5 += carry4;
|
||||
s4 -= carry4 * ((uint64_t)1L << 21);
|
||||
carry5 = s5 >> 21;
|
||||
s6 += carry5;
|
||||
s5 -= carry5 * ((uint64_t)1L << 21);
|
||||
carry6 = s6 >> 21;
|
||||
s7 += carry6;
|
||||
s6 -= carry6 * ((uint64_t)1L << 21);
|
||||
carry7 = s7 >> 21;
|
||||
s8 += carry7;
|
||||
s7 -= carry7 * ((uint64_t)1L << 21);
|
||||
carry8 = s8 >> 21;
|
||||
s9 += carry8;
|
||||
s8 -= carry8 * ((uint64_t)1L << 21);
|
||||
carry9 = s9 >> 21;
|
||||
s10 += carry9;
|
||||
s9 -= carry9 * ((uint64_t)1L << 21);
|
||||
carry10 = s10 >> 21;
|
||||
s11 += carry10;
|
||||
s10 -= carry10 * ((uint64_t)1L << 21);
|
||||
|
||||
s[0] = s0 >> 0;
|
||||
s[1] = s0 >> 8;
|
||||
s[2] = (s0 >> 16) | (s1 * ((uint64_t)1 << 5));
|
||||
s[3] = s1 >> 3;
|
||||
s[4] = s1 >> 11;
|
||||
s[5] = (s1 >> 19) | (s2 * ((uint64_t)1 << 2));
|
||||
s[6] = s2 >> 6;
|
||||
s[7] = (s2 >> 14) | (s3 * ((uint64_t)1 << 7));
|
||||
s[8] = s3 >> 1;
|
||||
s[9] = s3 >> 9;
|
||||
s[10] = (s3 >> 17) | (s4 * ((uint64_t)1 << 4));
|
||||
s[11] = s4 >> 4;
|
||||
s[12] = s4 >> 12;
|
||||
s[13] = (s4 >> 20) | (s5 * ((uint64_t)1 << 1));
|
||||
s[14] = s5 >> 7;
|
||||
s[15] = (s5 >> 15) | (s6 * ((uint64_t)1 << 6));
|
||||
s[16] = s6 >> 2;
|
||||
s[17] = s6 >> 10;
|
||||
s[18] = (s6 >> 18) | (s7 * ((uint64_t)1 << 3));
|
||||
s[19] = s7 >> 5;
|
||||
s[20] = s7 >> 13;
|
||||
s[21] = s8 >> 0;
|
||||
s[22] = s8 >> 8;
|
||||
s[23] = (s8 >> 16) | (s9 * ((uint64_t)1 << 5));
|
||||
s[24] = s9 >> 3;
|
||||
s[25] = s9 >> 11;
|
||||
s[26] = (s9 >> 19) | (s10 * ((uint64_t)1 << 2));
|
||||
s[27] = s10 >> 6;
|
||||
s[28] = (s10 >> 14) | (s11 * ((uint64_t)1 << 7));
|
||||
s[29] = s11 >> 1;
|
||||
s[30] = s11 >> 9;
|
||||
s[31] = s11 >> 17;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -120,7 +120,7 @@ void sc_reduce32(unsigned char *);
|
|||
void sc_add(unsigned char *, const unsigned char *, const unsigned char *);
|
||||
void sc_sub(unsigned char *, const unsigned char *, const unsigned char *);
|
||||
void sc_mulsub(unsigned char *, const unsigned char *, const unsigned char *, const unsigned char *);
|
||||
void sc_mul(unsigned char *z, const unsigned char *x, const unsigned char *y);
|
||||
void sc_mul(unsigned char *, const unsigned char *, const unsigned char *);
|
||||
int sc_check(const unsigned char *);
|
||||
int sc_isnonzero(const unsigned char *); /* Doesn't normalize */
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue