From 14c404e44715b3dcedab84a39a97766e6ce5125e Mon Sep 17 00:00:00 2001
From: renaud dubois <renaud.dubois.fr@gmail.com>
Date: Tue, 10 Dec 2024 10:25:38 +0100
Subject: [PATCH] testing interpolation on ed25519  ok

---
 src/libMPC/SCL_ecc.mjs    |  4 ++--
 src/libMPC/SCL_frost.mjs  |  4 ++--
 src/libMPC/test_frost.mjs | 14 +++++++++-----
 3 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/src/libMPC/SCL_ecc.mjs b/src/libMPC/SCL_ecc.mjs
index 3438614..c28e325 100644
--- a/src/libMPC/SCL_ecc.mjs
+++ b/src/libMPC/SCL_ecc.mjs
@@ -42,8 +42,8 @@ export class SCL_ecc
         return publicKey;
       }
       if (this.curve === 'ed25519') {
-        const publicKey = this.curve.GetBase().multiply(int_from_bytes(scalar_array)); // 'true' for compressed format
-        return this.curve.PointCompress(publicKey);//the getPublicKey is replaced by a scalar multiplication to be compatible with key aggregation
+        const publicKey = this.GetBase().multiply(int_from_bytes(scalar_array)); // 'true' for compressed format
+        return this.PointCompress(publicKey);//the getPublicKey is replaced by a scalar multiplication to be compatible with key aggregation
       }
   
       throw new Error('Unsupported curve');
diff --git a/src/libMPC/SCL_frost.mjs b/src/libMPC/SCL_frost.mjs
index ce34263..f9b99cc 100644
--- a/src/libMPC/SCL_frost.mjs
+++ b/src/libMPC/SCL_frost.mjs
@@ -145,7 +145,7 @@ export class SCL_trustedKeyGen
         if (this.n<this.min_participants)
             return false;
         //check secshares.G=pubshares
-        console.log(this.secshares);
+        //console.log(this.secshares);
 
         for(let i=0;i<this.n;i++){
             let recPub=this.curve.GetBase().multiply(this.secshares[i][1]);
@@ -166,7 +166,7 @@ export class SCL_FROST{
     constructor(curve) {
 
         this.curve=new SCL_ecc(curve);
-        
+
         if (this.curve.curve === 'secp256k1') {
             this.order=secp256k1.CURVE.n;
             this.RawBytesSize=33;//size of a compressed point with parity, 32bytes+1byte parity
diff --git a/src/libMPC/test_frost.mjs b/src/libMPC/test_frost.mjs
index 37457ee..a19739b 100644
--- a/src/libMPC/test_frost.mjs
+++ b/src/libMPC/test_frost.mjs
@@ -23,12 +23,15 @@ import { SCL_FROST, SCL_trustedKeyGen } from './SCL_frost.mjs';
 
 
 //random vector generation
-function test_randomInterpolate_secret(){
+function test_randomInterpolate_secret(Curvename){
  
- let curve=new SCL_ecc('secp256k1');
+console.log("/*************************** ");
+console.log("Test lagrange interpolation on curve:", Curvename);
+
+ let curve=new SCL_ecc(Curvename);
  let sk=curve.Get_Random_privateKey();
 
- let dealer=new SCL_trustedKeyGen( 'secp256k1',sk, 12,4);
+ let dealer=new SCL_trustedKeyGen( Curvename,sk, 12,4);
 
  console.log("Consistency secret/public shares:",dealer.Check_Shares());
  //erasing to prove Reed Solomon like recovery of missing shares
@@ -87,7 +90,6 @@ function test_noncegen()
 
     let res=frost.Nonce_gen_internal(rand_, secshare, pubshare, group_pk, msg, extra_in);
 
-    console.log("res:",res, res[0].length);
 
     console.log(expected_secnonce.equals(Buffer.from(res[0].slice(0,64))));
     console.log(expected_pubnonce.equals(Buffer.from(res[1])));
@@ -96,7 +98,9 @@ function test_noncegen()
 
 
 (async () => {
-    test_randomInterpolate_secret();
+    test_randomInterpolate_secret('secp256k1');
+    test_randomInterpolate_secret('ed25519');
+    
     test_aggnonce();
     test_noncegen();