From 9beecb5339a4a66721684f1620487023af29049b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=9A=D0=B0=D0=BC=D0=B8=D0=BB=D1=8C=20=D0=9C=D1=83=D1=85?=
 =?UTF-8?q?=D0=B0=D0=BC=D0=B5=D1=82=D0=B7=D1=8F=D0=BD=D0=BE=D0=B2?=
 <grkamil@yandex.ru>
Date: Sun, 8 Jul 2018 10:15:10 +0300
Subject: [PATCH] remove unusable methods;

---
 src/BIP/Library/KeyPair.php | 78 -------------------------------------
 1 file changed, 78 deletions(-)

diff --git a/src/BIP/Library/KeyPair.php b/src/BIP/Library/KeyPair.php
index 22015ab..d18ccc4 100644
--- a/src/BIP/Library/KeyPair.php
+++ b/src/BIP/Library/KeyPair.php
@@ -39,82 +39,4 @@ public function privateKeyTweakAdd(string $privateKey, string $tweak, string $en
 
         return $bn;
     }
-
-    /*
-    public function publicKeyTweakAdd(string $publicKey, string $tweak, string $enc)
-    {
-        $pair = $this->loadPublicKey($publicKey);
-        if ($pair === null) {
-            throw new \Exception('Public key parse failed');
-        }
-
-        $tweak = new BN($tweak, $enc);
-        if ($tweak->cmp($this->ec->n) >= 0) {
-            throw new \Exception('Public key tweak add failed');
-        }
-
-        //$this->ec->g->mul($tweak)->add($pair->pub);
-    }
-
-    protected function loadPublicKey(string $publicKey)
-    {
-        $first = substr($publicKey, 0, 2);
-
-        if (in_array($first, ['02', '03']) && strlen($publicKey) === 66) {
-            return $this->loadCompressedPublicKey($first, substr($publicKey, -64), 'hex');
-        }
-
-        if (in_array($first, ['04', '06', '07']) && strlen($publicKey) === 130) {
-            return $this->loadUncompressedPublicKey($first, substr($publicKey, 2, 66), substr($publicKey, 66, 130), 'hex');
-        }
-
-        return null;
-    }
-
-    protected function loadUncompressedPublicKey(string $first, string $x, string $y, string $enc)
-    {
-        $x = new BN($x, $enc);
-        $y = new BN($y, $enc);
-
-        // overflow
-        if ($x->cmp($this->ec->p) >= 0 || $y->cmp($this->ec->p) >= 0) {
-            return null;
-        }
-
-        $x = $x->toRed($this->ec->red);
-        $y = $y->toRed($this->ec->red);
-
-        // is odd flag
-        if (($first === '06' || $first === '07') && $y->isOdd() !== ($first === '07')) {
-            return null;
-        }
-
-        // x*x*x + b = y*y
-        $x3 = $x->redSqr()->redIMul($x);
-        if (!$y->redSqr()->redISub($x3->redIAdd($this->ec->b))->isZero()) {
-            return null;
-        }
-
-        //return
-    }
-
-    protected function loadCompressedPublicKey(string $first, string $x, string $enc)
-    {
-        $x = new BN($x, $enc);
-
-        // overflow
-        if ($x->cmp($this->ec->p) >= 0) {
-            return null;
-        }
-        $x = $x->toRed($this->ec->red);
-
-        // compute corresponding Y
-        $y = $x->redSqr()->redIMul($x)->redIAdd($this->ec->b)->redSqrt();
-        if (($first === '03') !== $y->isOdd()) {
-            $y = $y->redNeg();
-        }
-
-        //return
-    }
-    */
 }