<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;

class Sm2DecryptCommand extends Command
{
    /**
     * The name and signature of the console command.
     *
     * 用法：php artisan sm2:decrypt "密文hex" "私钥hex" [--mode=c1c3c2] [--asn1]
     */
    protected $signature = 'sm2:decrypt';

    /**
     * The console command description.
     */
    protected $description = '使用 SM2 私钥解密（硬编码密文与私钥），输出明文';

    public function handle(): int
    {
        // 硬编码密文与私钥（与加密命令匹配）
        $cipher = 'e27c3780e7069bda7082a23a489d77587ce309583ed99253f66e1d9833ed1a1d0b5ce86dc6714e9974cf258589139d7b1855e8c9fa2f2c1175ee123a95a23e9bbbaf04ad750b5c304a875aab17851fac60453940aac9da33cc4249a52ee46be446cf5083b5';
        $privateKey = 'MIGTAgEAMBMGByqGSM49AgEGCCqBHM9VAYItBHkwdwIBAQQgrEdb4ONfRO2N0cXZsDY0PcGpfzQKfrg6DB0r+1dt4EmgCgYIKoEcz1UBgi2hRANCAARxd7Iuetxpc/2pgiGY1aLz6RvYyz696c9B8s4FghM0K5T4G+ywxIQ4pNFRe2sbp3wJydCIX647Xw1OCRl/vMHt';
        $mode = 1; // C1C3C2

        try {
            $sm2 = new \Rtgm\sm\RtSm2('hex', true);
            $plain = $sm2->doDecrypt($cipher, $privateKey, true, $mode);

            if ($plain === '') {
                $this->error('解密失败：C3 校验不通过或格式不匹配');
                return self::FAILURE;
            }

            $this->line($plain);
            return self::SUCCESS;
        } catch (\Throwable $e) {
            $this->error('SM2 解密异常：' . $e->getMessage());
            return self::FAILURE;
        }
    }
}