php gmssl库的使用案例有哪些

PHP的gmssl库是一个基于国密算法（SM2、SM3、SM4）的加密库，它提供了一系列的加密、解密、签名和验证等功能。以下是一些使用PHP gmssl库的示例：

1. 生成SM2密钥对

<?php require_once 'vendor/autoload.php'; use Gmssl\SM2;  $sm2 = new SM2(); $keyPair = $sm2->generateKeyPair(); echo "公钥: " . $keyPair['publicKey'] . "\n"; echo "私钥: " . $keyPair['privateKey'] . "\n"; ?> 

2. SM2加密和解密

<?php require_once 'vendor/autoload.php'; use Gmssl\SM2;  $sm2 = new SM2(); $keyPair = $sm2->generateKeyPair(); $publicKey = $keyPair['publicKey']; $privateKey = $keyPair['privateKey'];  $data = "Hello, world!"; $encryptedData = $sm2->encrypt($data, $publicKey); echo "加密后的数据: " . $encryptedData . "\n";  $decryptedData = $sm2->decrypt($encryptedData, $privateKey); echo "解密后的数据: " . $decryptedData . "\n"; ?> 

3. SM2签名和验证

<?php require_once 'vendor/autoload.php'; use Gmssl\SM2;  $sm2 = new SM2(); $keyPair = $sm2->generateKeyPair(); $publicKey = $keyPair['publicKey']; $privateKey = $keyPair['privateKey'];  $data = "Hello, world!"; $signature = $sm2->sign($data, $privateKey); echo "签名: " . $signature . "\n";  $isValid = $sm2->verify($data, $signature, $publicKey); echo "验证签名: " . ($isValid ? "有效" : "无效") . "\n"; ?> 

4. SM3哈希计算

<?php require_once 'vendor/autoload.php'; use Gmssl\SM3;  $sm3 = new SM3(); $data = "Hello, world!"; $hash = $sm3->hash($data); echo "哈希值: " . $hash . "\n"; ?> 

5. SM4加密和解密

<?php require_once 'vendor/autoload.php'; use Gmssl\SM4;  $sm4 = new SM4(); $key = '0123456789abcdeffedcba9876543210'; // 16字节的密钥  $data = "Hello, world!"; $encryptedData = $sm4->encrypt($data, $key); echo "加密后的数据: " . $encryptedData . "\n";  $decryptedData = $sm4->decrypt($encryptedData, $key); echo "解密后的数据: " . $decryptedData . "\n"; ?> 

请注意，这些示例需要先安装PHP的gmssl库。你可以通过Composer来安装：

composer require gmssl/gmssl