feat: new chain

2026-08-11 02:26:43 +08:00
parent ec2d9f2308
commit 9bf769b2bd
56 changed files with 3806 additions and 325 deletions
@@ -0,0 +1,82 @@
+<?php
+
+namespace App\Services\Chain;
+
+use Elliptic\EC;
+use kornrunner\Keccak;
+use RuntimeException;
+
+final class EthSigner
+{
+    /**
+     * Sign a legacy EIP-155 transaction.
+     *
+     * @param  array{nonce: string, gasPrice: string, gas: string, to: string, value: string, data: string}  $tx
+     * @return string 0x-prefixed raw tx hex
+     */
+    public static function signLegacy(string $privateKeyHex, array $tx, int $chainId): string
+    {
+        $privateKeyHex = strtolower($privateKeyHex);
+        if (str_starts_with($privateKeyHex, '0x')) {
+            $privateKeyHex = substr($privateKeyHex, 2);
+        }
+        $to = strtolower($tx['to']);
+        if (str_starts_with($to, '0x')) {
+            $to = substr($to, 2);
+        }
+        $data = strtolower($tx['data'] ?? '');
+        if (str_starts_with($data, '0x')) {
+            $data = substr($data, 2);
+        }
+
+        $fields = [
+            EthRlp::intToBin($tx['nonce']),
+            EthRlp::intToBin($tx['gasPrice']),
+            EthRlp::intToBin($tx['gas']),
+            hex2bin($to) ?: '',
+            EthRlp::intToBin($tx['value']),
+            $data === '' ? '' : (hex2bin($data) ?: ''),
+            EthRlp::intToBin((string) $chainId),
+            '',
+            '',
+        ];
+
+        $unsigned = EthRlp::encodeList($fields);
+        $hash = Keccak::hash($unsigned, 256);
+
+        $ec = new EC('secp256k1');
+        $key = $ec->keyFromPrivate($privateKeyHex);
+        $sig = $key->sign($hash, ['canonical' => true]);
+
+        $r = str_pad($sig->r->toString(16), 64, '0', STR_PAD_LEFT);
+        $s = str_pad($sig->s->toString(16), 64, '0', STR_PAD_LEFT);
+        $recovery = (int) ($sig->recoveryParam ?? 0);
+        $v = (string) ($recovery + 35 + $chainId * 2);
+
+        $signed = EthRlp::encodeList([
+            EthRlp::intToBin($tx['nonce']),
+            EthRlp::intToBin($tx['gasPrice']),
+            EthRlp::intToBin($tx['gas']),
+            hex2bin($to) ?: '',
+            EthRlp::intToBin($tx['value']),
+            $data === '' ? '' : (hex2bin($data) ?: ''),
+            EthRlp::intToBin($v),
+            hex2bin($r) ?: '',
+            hex2bin($s) ?: '',
+        ]);
+
+        return '0x'.bin2hex($signed);
+    }
+
+    public static function publicAddress(string $privateKeyHex): string
+    {
+        $privateKeyHex = strtolower($privateKeyHex);
+        if (str_starts_with($privateKeyHex, '0x')) {
+            $privateKeyHex = substr($privateKeyHex, 2);
+        }
+        $ec = new EC('secp256k1');
+        $pub = $ec->keyFromPrivate($privateKeyHex)->getPublic(false, 'hex');
+
+        return EthAddress::fromUncompressedPublicKey($pub);
+    }
+}