php如何对二进制数据加密?
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可以,我们以aes 256位对称加密对二进制数据进行加密解密,示例代码如下:
<?php //Define cipher $cipher = "aes-256-cbc"; //生产一个256字节的key $encryption_key = openssl_random_pseudo_bytes(32); // 生成并初始化 vector $iv_size = openssl_cipher_iv_length($cipher); $iv = openssl_random_pseudo_bytes($iv_size); //原文 //通过pack转换成二进制 $data = pack("a32", "bfw.wiki"); $encrypted_data = openssl_encrypt($data, $cipher, $encryption_key, 0, $iv); echo "加密后: " . $encrypted_data."\n"; //Define cipher $cipher = "aes-256-cbc"; //Decrypt data $decrypted_data = openssl_decrypt($encrypted_data, $cipher, $encryption_key, 0, $iv); echo "解密后: " . $decrypted_data."\n"; ?>