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simplified

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This commit is contained in:
Gorachya
2019-02-10 00:36:49 -08:00
parent 69131474f0
commit b5a3bbba66
1 changed files with 7 additions and 33 deletions
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40
crypto/sm9/sm9_rate.c
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@@ -2455,42 +2455,16 @@ static int fast_final_expo(fp12_t r, const fp12_t a, const BIGNUM *k, const BIGN
fp12_t t;
fp12_t t0;
fp12_init(t, ctx);
fp12_init(t0, ctx);
if (!fp12_inv(t0, a, p, ctx)
|| !fp12_fast_expo_p1(t, a, p, ctx)
|| !fp12_mul(t, t0, t, p, ctx)
|| !fp12_copy(t0, t)
|| !fp12_fast_expo_p2(t, t, p, ctx)
|| !fp12_mul(t, t0, t, p, ctx)
|| !fp12_copy(t0, t)) {
if (!fp12_copy(t, a)) {
return 0;
}
if (!fp12_copy(t0, a)) {
return 0;
}
if (!fp12_inv(t0, t, p, ctx)) {
return 0;
}
if (!fp12_fast_expo_p1(t, t, p, ctx)) {
return 0;
}
if (!fp12_mul(t, t0, t, p, ctx)) {
return 0;
}
if (!fp12_copy(t0, t)) {
return 0;
}
if(!fp12_fast_expo_p2(t, t, p, ctx)){
return 0;
}
if (!fp12_mul(t, t0, t, p, ctx)) {
return 0;
}
if (!fp12_copy(t0, t)) {
return 0;
}
n = BN_num_bits(k);
for (i = n - 2; i >= 0; i--) {
if (!fp12_sqr(t, t, p, ctx)) {