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wolfcrypt/src/fe_x25519_128.i: harmonize argument names in fe_cswap() and fe_cmov() with those used in fe_operations.c.

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Daniel Pouzzner
2022-01-26 02:05:26 -06:00
parent 85da17bcf8
commit 9250edc2ea
1 changed files with 29 additions and 29 deletions
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58
wolfcrypt/src/fe_x25519_128.i
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@@ -193,30 +193,30 @@ void fe_copy(fe r, const fe a)
* b A field element. * b A field element.
* c If 1 then swap and if 0 then don't swap. * c If 1 then swap and if 0 then don't swap.
*/ */
void fe_cswap(fe a, fe b, int c) void fe_cswap(fe f, fe g, int b)
{ {
sword64 m = c; sword64 m = b;
sword64 t0, t1, t2, t3, t4; sword64 t0, t1, t2, t3, t4;
/* Convert conditional into mask. */ /* Convert conditional into mask. */
m = -m; m = -m;
t0 = m & (a[0] ^ b[0]); t0 = m & (f[0] ^ g[0]);
t1 = m & (a[1] ^ b[1]); t1 = m & (f[1] ^ g[1]);
t2 = m & (a[2] ^ b[2]); t2 = m & (f[2] ^ g[2]);
t3 = m & (a[3] ^ b[3]); t3 = m & (f[3] ^ g[3]);
t4 = m & (a[4] ^ b[4]); t4 = m & (f[4] ^ g[4]);
a[0] ^= t0; f[0] ^= t0;
a[1] ^= t1; f[1] ^= t1;
a[2] ^= t2; f[2] ^= t2;
a[3] ^= t3; f[3] ^= t3;
a[4] ^= t4; f[4] ^= t4;
b[0] ^= t0; g[0] ^= t0;
b[1] ^= t1; g[1] ^= t1;
b[2] ^= t2; g[2] ^= t2;
b[3] ^= t3; g[3] ^= t3;
b[4] ^= t4; g[4] ^= t4;
} }
/* Subtract b from a into r. (r = a - b) /* Subtract b from a into r. (r = a - b)
@@ -505,24 +505,24 @@ void fe_neg(fe r, const fe a)
* b A field element. * b A field element.
* c If 1 then copy and if 0 then don't copy. * c If 1 then copy and if 0 then don't copy.
*/ */
void fe_cmov(fe a, const fe b, int c) void fe_cmov(fe f, const fe g, int b)
{ {
sword64 m = c; sword64 m = b;
sword64 t0, t1, t2, t3, t4; sword64 t0, t1, t2, t3, t4;
/* Convert conditional into mask. */ /* Convert conditional into mask. */
m = -m; m = -m;
t0 = m & (a[0] ^ b[0]); t0 = m & (f[0] ^ g[0]);
t1 = m & (a[1] ^ b[1]); t1 = m & (f[1] ^ g[1]);
t2 = m & (a[2] ^ b[2]); t2 = m & (f[2] ^ g[2]);
t3 = m & (a[3] ^ b[3]); t3 = m & (f[3] ^ g[3]);
t4 = m & (a[4] ^ b[4]); t4 = m & (f[4] ^ g[4]);
a[0] ^= t0; f[0] ^= t0;
a[1] ^= t1; f[1] ^= t1;
a[2] ^= t2; f[2] ^= t2;
a[3] ^= t3; f[3] ^= t3;
a[4] ^= t4; f[4] ^= t4;
} }
void fe_pow22523(fe r, const fe a) void fe_pow22523(fe r, const fe a)