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fixed scalarmultKey() calls in Carrot-specific CLSAG code; added new signing function for T terms in CLSAG

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Some Random Crypto Guy
2025-05-29 14:12:54 +01:00
parent 3878e389fe
commit f7be7b843b
6 changed files with 32 additions and 12 deletions
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src/ringct/rctSigs.cpp
+13 -10
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@@ -482,11 +482,12 @@ namespace rct {
precomp(C_precomp.k, C[i]);
// Compute L
addKeys_aGbBcC(L, sig.sx[i], c_p, P_precomp.k, c_c, C_precomp.k);
// add the T term
key rT = rct::scalarmultKey(b, rct::pk2rct(crypto::get_T()));
L = addKeys(L, rT);
key xGyT;
addKeys2(xGyT, sig.sx[i], sig.sy[i], rct::pk2rct(crypto::get_T()));
key temp_precomp;
addKeys3(temp_precomp, c_p, P_precomp.k, c_c, C_precomp.k);
L = addKeys(xGyT, temp_precomp);
// Compute R
hash_to_p3(Hi_p3,P[i]);
ge_dsm_precomp(H_precomp.k, &Hi_p3);
@@ -504,7 +505,7 @@ namespace rct {
// Compute final scalars
hwdev.clsag_sign(c, a, x, z, mu_P, mu_C, sig.sx[l]);
hwdev.clsag_sign(c, b, y, z, mu_P, mu_C, sig.sy[l]);
hwdev.clsag_sign_y(c, b, y, mu_P, sig.sy[l]);
memwipe(&a, sizeof(key));
memwipe(&b, sizeof(key));
@@ -1264,6 +1265,7 @@ namespace rct {
}
c_to_hash[2*n+1] = C_offset;
c_to_hash[2*n+2] = message;
key c_p; // = c[i]*mu_P
key c_c; // = c[i]*mu_C
key c_new;
@@ -1291,10 +1293,11 @@ namespace rct {
ge_dsm_precomp(C_precomp.k,&temp_p3);
// Compute L
addKeys_aGbBcC(L, sig.sx[i], c_p, P_precomp.k, c_c, C_precomp.k);
// add the T term
key rT = rct::scalarmultKey(sig.sy[i], rct::pk2rct(crypto::get_T()));
L = addKeys(L, rT);
key xGyT;
addKeys2(xGyT, sig.sx[i], sig.sy[i], rct::pk2rct(crypto::get_T()));
key temp_precomp;
addKeys3(temp_precomp, c_p, P_precomp.k, c_c, C_precomp.k);
L = addKeys(xGyT, temp_precomp);
// Compute R
hash_to_p3(hash8_p3,pubs[i].dest);