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-rw-r--r--src/crypto/crypto-ops.c120
1 files changed, 63 insertions, 57 deletions
diff --git a/src/crypto/crypto-ops.c b/src/crypto/crypto-ops.c
index dc2c7092c..97e7df50e 100644
--- a/src/crypto/crypto-ops.c
+++ b/src/crypto/crypto-ops.c
@@ -1,8 +1,15 @@
+// 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.
+
#include <assert.h>
#include <stdint.h>
+#include "warnings.h"
#include "crypto-ops.h"
+DISABLE_VS_WARNINGS(4146 4244)
+
/* Predeclarations */
static void fe_mul(fe, const fe, const fe);
@@ -232,28 +239,53 @@ static void fe_invert(fe out, const fe z) {
fe t3;
int i;
- fe_sq(t0,z); for (i = 1;i < 1;++i) fe_sq(t0,t0);
- fe_sq(t1,t0); for (i = 1;i < 2;++i) fe_sq(t1,t1);
- fe_mul(t1,z,t1);
- fe_mul(t0,t0,t1);
- fe_sq(t2,t0); for (i = 1;i < 1;++i) fe_sq(t2,t2);
- fe_mul(t1,t1,t2);
- fe_sq(t2,t1); for (i = 1;i < 5;++i) fe_sq(t2,t2);
- fe_mul(t1,t2,t1);
- fe_sq(t2,t1); for (i = 1;i < 10;++i) fe_sq(t2,t2);
- fe_mul(t2,t2,t1);
- fe_sq(t3,t2); for (i = 1;i < 20;++i) fe_sq(t3,t3);
- fe_mul(t2,t3,t2);
- fe_sq(t2,t2); for (i = 1;i < 10;++i) fe_sq(t2,t2);
- fe_mul(t1,t2,t1);
- fe_sq(t2,t1); for (i = 1;i < 50;++i) fe_sq(t2,t2);
- fe_mul(t2,t2,t1);
- fe_sq(t3,t2); for (i = 1;i < 100;++i) fe_sq(t3,t3);
- fe_mul(t2,t3,t2);
- fe_sq(t2,t2); for (i = 1;i < 50;++i) fe_sq(t2,t2);
- fe_mul(t1,t2,t1);
- fe_sq(t1,t1); for (i = 1;i < 5;++i) fe_sq(t1,t1);
- fe_mul(out,t1,t0);
+ fe_sq(t0, z);
+ fe_sq(t1, t0);
+ fe_sq(t1, t1);
+ fe_mul(t1, z, t1);
+ fe_mul(t0, t0, t1);
+ fe_sq(t2, t0);
+ fe_mul(t1, t1, t2);
+ fe_sq(t2, t1);
+ for (i = 0; i < 4; ++i) {
+ fe_sq(t2, t2);
+ }
+ fe_mul(t1, t2, t1);
+ fe_sq(t2, t1);
+ for (i = 0; i < 9; ++i) {
+ fe_sq(t2, t2);
+ }
+ fe_mul(t2, t2, t1);
+ fe_sq(t3, t2);
+ for (i = 0; i < 19; ++i) {
+ fe_sq(t3, t3);
+ }
+ fe_mul(t2, t3, t2);
+ fe_sq(t2, t2);
+ for (i = 0; i < 9; ++i) {
+ fe_sq(t2, t2);
+ }
+ fe_mul(t1, t2, t1);
+ fe_sq(t2, t1);
+ for (i = 0; i < 49; ++i) {
+ fe_sq(t2, t2);
+ }
+ fe_mul(t2, t2, t1);
+ fe_sq(t3, t2);
+ for (i = 0; i < 99; ++i) {
+ fe_sq(t3, t3);
+ }
+ fe_mul(t2, t3, t2);
+ fe_sq(t2, t2);
+ for (i = 0; i < 49; ++i) {
+ fe_sq(t2, t2);
+ }
+ fe_mul(t1, t2, t1);
+ fe_sq(t1, t1);
+ for (i = 0; i < 4; ++i) {
+ fe_sq(t1, t1);
+ }
+ fe_mul(out, t1, t0);
return;
}
@@ -1089,8 +1121,9 @@ static void slide(signed char *r, const unsigned char *a) {
int b;
int k;
- for (i = 0; i < 256; ++i)
+ for (i = 0; i < 256; ++i) {
r[i] = 1 & (a[i >> 3] >> (i & 7));
+ }
for (i = 0; i < 256; ++i) {
if (r[i]) {
@@ -1417,8 +1450,8 @@ void ge_p3_tobytes(unsigned char *s, const ge_p3 *h) {
fe y;
fe_invert(recip, h->Z);
- fe_mul(x,h->X, recip);
- fe_mul(y,h->Y, recip);
+ fe_mul(x, h->X, recip);
+ fe_mul(y, h->Y, recip);
fe_tobytes(s, y);
s[31] ^= fe_isnegative(x) << 7;
}
@@ -1492,7 +1525,7 @@ void ge_scalarmult_base(ge_p3 *h, const unsigned char *a) {
ge_precomp t;
int i;
- for (i = 0;i < 32;++i) {
+ for (i = 0; i < 32; ++i) {
e[2 * i + 0] = (a[i] >> 0) & 15;
e[2 * i + 1] = (a[i] >> 4) & 15;
}
@@ -1500,7 +1533,7 @@ void ge_scalarmult_base(ge_p3 *h, const unsigned char *a) {
/* e[63] is between 0 and 7 */
carry = 0;
- for (i = 0;i < 63;++i) {
+ for (i = 0; i < 63; ++i) {
e[i] += carry;
carry = e[i] + 8;
carry >>= 4;
@@ -1510,7 +1543,7 @@ void ge_scalarmult_base(ge_p3 *h, const unsigned char *a) {
/* each e[i] is between -8 and 8 */
ge_p3_0(h);
- for (i = 1;i < 64;i += 2) {
+ for (i = 1; i < 64; i += 2) {
select(&t, i / 2, e[i]);
ge_madd(&r, h, &t); ge_p1p1_to_p3(h, &r);
}
@@ -1520,7 +1553,7 @@ void ge_scalarmult_base(ge_p3 *h, const unsigned char *a) {
ge_p2_dbl(&r, &s); ge_p1p1_to_p2(&s, &r);
ge_p2_dbl(&r, &s); ge_p1p1_to_p3(h, &r);
- for (i = 0;i < 64;i += 2) {
+ for (i = 0; i < 64; i += 2) {
select(&t, i / 2, e[i]);
ge_madd(&r, h, &t); ge_p1p1_to_p3(h, &r);
}
@@ -1622,7 +1655,6 @@ void sc_reduce(unsigned char *s) {
s14 -= s23 * 997805;
s15 += s23 * 136657;
s16 -= s23 * 683901;
- s23 = 0;
s10 += s22 * 666643;
s11 += s22 * 470296;
@@ -1630,7 +1662,6 @@ void sc_reduce(unsigned char *s) {
s13 -= s22 * 997805;
s14 += s22 * 136657;
s15 -= s22 * 683901;
- s22 = 0;
s9 += s21 * 666643;
s10 += s21 * 470296;
@@ -1638,7 +1669,6 @@ void sc_reduce(unsigned char *s) {
s12 -= s21 * 997805;
s13 += s21 * 136657;
s14 -= s21 * 683901;
- s21 = 0;
s8 += s20 * 666643;
s9 += s20 * 470296;
@@ -1646,7 +1676,6 @@ void sc_reduce(unsigned char *s) {
s11 -= s20 * 997805;
s12 += s20 * 136657;
s13 -= s20 * 683901;
- s20 = 0;
s7 += s19 * 666643;
s8 += s19 * 470296;
@@ -1654,7 +1683,6 @@ void sc_reduce(unsigned char *s) {
s10 -= s19 * 997805;
s11 += s19 * 136657;
s12 -= s19 * 683901;
- s19 = 0;
s6 += s18 * 666643;
s7 += s18 * 470296;
@@ -1662,7 +1690,6 @@ void sc_reduce(unsigned char *s) {
s9 -= s18 * 997805;
s10 += s18 * 136657;
s11 -= s18 * 683901;
- s18 = 0;
carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21;
carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21;
@@ -1683,7 +1710,6 @@ void sc_reduce(unsigned char *s) {
s8 -= s17 * 997805;
s9 += s17 * 136657;
s10 -= s17 * 683901;
- s17 = 0;
s4 += s16 * 666643;
s5 += s16 * 470296;
@@ -1691,7 +1717,6 @@ void sc_reduce(unsigned char *s) {
s7 -= s16 * 997805;
s8 += s16 * 136657;
s9 -= s16 * 683901;
- s16 = 0;
s3 += s15 * 666643;
s4 += s15 * 470296;
@@ -1699,7 +1724,6 @@ void sc_reduce(unsigned char *s) {
s6 -= s15 * 997805;
s7 += s15 * 136657;
s8 -= s15 * 683901;
- s15 = 0;
s2 += s14 * 666643;
s3 += s14 * 470296;
@@ -1707,7 +1731,6 @@ void sc_reduce(unsigned char *s) {
s5 -= s14 * 997805;
s6 += s14 * 136657;
s7 -= s14 * 683901;
- s14 = 0;
s1 += s13 * 666643;
s2 += s13 * 470296;
@@ -1715,7 +1738,6 @@ void sc_reduce(unsigned char *s) {
s4 -= s13 * 997805;
s5 += s13 * 136657;
s6 -= s13 * 683901;
- s13 = 0;
s0 += s12 * 666643;
s1 += s12 * 470296;
@@ -1766,7 +1788,6 @@ void sc_reduce(unsigned char *s) {
s3 -= s12 * 997805;
s4 += s12 * 136657;
s5 -= s12 * 683901;
- s12 = 0;
carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21;
carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21;
@@ -2196,7 +2217,6 @@ void sc_reduce32(unsigned char *s) {
s3 -= s12 * 997805;
s4 += s12 * 136657;
s5 -= s12 * 683901;
- s12 = 0;
carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21;
carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21;
@@ -2336,7 +2356,6 @@ void sc_add(unsigned char *s, const unsigned char *a, const unsigned char *b) {
s3 -= s12 * 997805;
s4 += s12 * 136657;
s5 -= s12 * 683901;
- s12 = 0;
carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21;
carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21;
@@ -2476,7 +2495,6 @@ void sc_sub(unsigned char *s, const unsigned char *a, const unsigned char *b) {
s3 -= s12 * 997805;
s4 += s12 * 136657;
s5 -= s12 * 683901;
- s12 = 0;
carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21;
carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21;
@@ -2676,7 +2694,6 @@ void sc_mulsub(unsigned char *s, const unsigned char *a, const unsigned char *b,
s14 -= s23 * 997805;
s15 += s23 * 136657;
s16 -= s23 * 683901;
- s23 = 0;
s10 += s22 * 666643;
s11 += s22 * 470296;
@@ -2684,7 +2701,6 @@ void sc_mulsub(unsigned char *s, const unsigned char *a, const unsigned char *b,
s13 -= s22 * 997805;
s14 += s22 * 136657;
s15 -= s22 * 683901;
- s22 = 0;
s9 += s21 * 666643;
s10 += s21 * 470296;
@@ -2692,7 +2708,6 @@ void sc_mulsub(unsigned char *s, const unsigned char *a, const unsigned char *b,
s12 -= s21 * 997805;
s13 += s21 * 136657;
s14 -= s21 * 683901;
- s21 = 0;
s8 += s20 * 666643;
s9 += s20 * 470296;
@@ -2700,7 +2715,6 @@ void sc_mulsub(unsigned char *s, const unsigned char *a, const unsigned char *b,
s11 -= s20 * 997805;
s12 += s20 * 136657;
s13 -= s20 * 683901;
- s20 = 0;
s7 += s19 * 666643;
s8 += s19 * 470296;
@@ -2708,7 +2722,6 @@ void sc_mulsub(unsigned char *s, const unsigned char *a, const unsigned char *b,
s10 -= s19 * 997805;
s11 += s19 * 136657;
s12 -= s19 * 683901;
- s19 = 0;
s6 += s18 * 666643;
s7 += s18 * 470296;
@@ -2716,7 +2729,6 @@ void sc_mulsub(unsigned char *s, const unsigned char *a, const unsigned char *b,
s9 -= s18 * 997805;
s10 += s18 * 136657;
s11 -= s18 * 683901;
- s18 = 0;
carry6 = (s6 + (1<<20)) >> 21; s7 += carry6; s6 -= carry6 << 21;
carry8 = (s8 + (1<<20)) >> 21; s9 += carry8; s8 -= carry8 << 21;
@@ -2737,7 +2749,6 @@ void sc_mulsub(unsigned char *s, const unsigned char *a, const unsigned char *b,
s8 -= s17 * 997805;
s9 += s17 * 136657;
s10 -= s17 * 683901;
- s17 = 0;
s4 += s16 * 666643;
s5 += s16 * 470296;
@@ -2745,7 +2756,6 @@ void sc_mulsub(unsigned char *s, const unsigned char *a, const unsigned char *b,
s7 -= s16 * 997805;
s8 += s16 * 136657;
s9 -= s16 * 683901;
- s16 = 0;
s3 += s15 * 666643;
s4 += s15 * 470296;
@@ -2753,7 +2763,6 @@ void sc_mulsub(unsigned char *s, const unsigned char *a, const unsigned char *b,
s6 -= s15 * 997805;
s7 += s15 * 136657;
s8 -= s15 * 683901;
- s15 = 0;
s2 += s14 * 666643;
s3 += s14 * 470296;
@@ -2761,7 +2770,6 @@ void sc_mulsub(unsigned char *s, const unsigned char *a, const unsigned char *b,
s5 -= s14 * 997805;
s6 += s14 * 136657;
s7 -= s14 * 683901;
- s14 = 0;
s1 += s13 * 666643;
s2 += s13 * 470296;
@@ -2769,7 +2777,6 @@ void sc_mulsub(unsigned char *s, const unsigned char *a, const unsigned char *b,
s4 -= s13 * 997805;
s5 += s13 * 136657;
s6 -= s13 * 683901;
- s13 = 0;
s0 += s12 * 666643;
s1 += s12 * 470296;
@@ -2820,7 +2827,6 @@ void sc_mulsub(unsigned char *s, const unsigned char *a, const unsigned char *b,
s3 -= s12 * 997805;
s4 += s12 * 136657;
s5 -= s12 * 683901;
- s12 = 0;
carry0 = s0 >> 21; s1 += carry0; s0 -= carry0 << 21;
carry1 = s1 >> 21; s2 += carry1; s1 -= carry1 << 21;
@@ -2890,4 +2896,4 @@ int sc_isnonzero(const unsigned char *s) {
s[9] | s[10] | s[11] | s[12] | s[13] | s[14] | s[15] | s[16] | s[17] |
s[18] | s[19] | s[20] | s[21] | s[22] | s[23] | s[24] | s[25] | s[26] |
s[27] | s[28] | s[29] | s[30] | s[31]) - 1) >> 8) + 1;
-} \ No newline at end of file
+}
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