Eliminate na_1 and na_lam state fields from ecmult_strauss_wnaf.
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@ -210,7 +210,6 @@ static int secp256k1_ecmult_wnaf(int *wnaf, int len, const secp256k1_scalar *a,
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}
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struct secp256k1_strauss_point_state {
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secp256k1_scalar na_1, na_lam;
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int wnaf_na_1[129];
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int wnaf_na_lam[129];
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int bits_na_1;
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@ -240,16 +239,17 @@ static void secp256k1_ecmult_strauss_wnaf(const struct secp256k1_strauss_state *
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size_t no = 0;
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for (np = 0; np < num; ++np) {
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secp256k1_scalar na_1, na_lam;
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if (secp256k1_scalar_is_zero(&na[np]) || secp256k1_gej_is_infinity(&a[np])) {
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continue;
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}
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state->ps[no].input_pos = np;
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/* split na into na_1 and na_lam (where na = na_1 + na_lam*lambda, and na_1 and na_lam are ~128 bit) */
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secp256k1_scalar_split_lambda(&state->ps[no].na_1, &state->ps[no].na_lam, &na[np]);
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secp256k1_scalar_split_lambda(&na_1, &na_lam, &na[np]);
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/* build wnaf representation for na_1 and na_lam. */
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state->ps[no].bits_na_1 = secp256k1_ecmult_wnaf(state->ps[no].wnaf_na_1, 129, &state->ps[no].na_1, WINDOW_A);
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state->ps[no].bits_na_lam = secp256k1_ecmult_wnaf(state->ps[no].wnaf_na_lam, 129, &state->ps[no].na_lam, WINDOW_A);
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state->ps[no].bits_na_1 = secp256k1_ecmult_wnaf(state->ps[no].wnaf_na_1, 129, &na_1, WINDOW_A);
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state->ps[no].bits_na_lam = secp256k1_ecmult_wnaf(state->ps[no].wnaf_na_lam, 129, &na_lam, WINDOW_A);
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VERIFY_CHECK(state->ps[no].bits_na_1 <= 129);
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VERIFY_CHECK(state->ps[no].bits_na_lam <= 129);
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if (state->ps[no].bits_na_1 > bits) {
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