From c10a49809f5e0227dc43c6378e8ec7e36a52eab8 Mon Sep 17 00:00:00 2001
From: saba <tameemtakouan@hotmail.com>
Date: Mon, 1 Dec 2025 19:04:17 +0800
Subject: [PATCH] chore. add keygen for sudoku

---
 component/generator/x25519.go | 60 -----------------------------------
 1 file changed, 60 deletions(-)

diff --git a/component/generator/x25519.go b/component/generator/x25519.go
index cb1f9844..e99fff2b 100644
--- a/component/generator/x25519.go
+++ b/component/generator/x25519.go
@@ -3,9 +3,6 @@ package generator
 import (
 	"crypto/ecdh"
 	"crypto/rand"
-	"encoding/hex"
-
-	"filippo.io/edwards25519"
 )
 
 const X25519KeySize = 32
@@ -28,60 +25,3 @@ func GenX25519PrivateKey() (*ecdh.PrivateKey, error) {
 
 	return ecdh.X25519().NewPrivateKey(privateKey[:])
 }
-
-// GenerateSudokuMasterKey generates a random master private key (scalar) and its public key (point)
-func GenerateSudokuMasterKey() (*edwards25519.Scalar, *edwards25519.Point, error) {
-	// 1. Generate random scalar x (32 bytes)
-	var seed [64]byte
-	if _, err := rand.Read(seed[:]); err != nil {
-		return nil, nil, err
-	}
-
-	x, err := edwards25519.NewScalar().SetUniformBytes(seed[:])
-	if err != nil {
-		return nil, nil, err
-	}
-
-	// 2. Calculate Public Key P = x * G
-	P := new(edwards25519.Point).ScalarBaseMult(x)
-
-	return x, P, nil
-}
-
-// SplitSudokuPrivateKey takes a master private key x and returns a new random split key (r, k)
-// such that x = r + k (mod L).
-// Returns hex encoded string of r || k (64 bytes)
-func SplitSudokuPrivateKey(x *edwards25519.Scalar) (string, error) {
-	// 1. Generate random r (32 bytes)
-	var seed [64]byte
-	if _, err := rand.Read(seed[:]); err != nil {
-		return "", err
-	}
-	r, err := edwards25519.NewScalar().SetUniformBytes(seed[:])
-	if err != nil {
-		return "", err
-	}
-
-	// 2. Calculate k = x - r (mod L)
-	k := new(edwards25519.Scalar).Subtract(x, r)
-
-	// 3. Encode r and k
-	rBytes := r.Bytes()
-	kBytes := k.Bytes()
-
-	full := make([]byte, 64)
-	copy(full[:32], rBytes)
-	copy(full[32:], kBytes)
-
-	return hex.EncodeToString(full), nil
-}
-
-// EncodeSudokuPoint returns the hex string of the compressed point
-func EncodeSudokuPoint(p *edwards25519.Point) string {
-	return hex.EncodeToString(p.Bytes())
-}
-
-// EncodeSudokuScalar returns the hex string of the scalar
-func EncodeSudokuScalar(s *edwards25519.Scalar) string {
-	return hex.EncodeToString(s.Bytes())
-}