With the upgrade of PHP version, some functions have been abandoned, such as encryption and decryption functions. Before PHP7.1, decryption and encryption were implemented through mcrypt_decrypt() and mcrypt_encrypt(). After PHP7.1, decryption and encryption were implemented through openssl_decrypt() and openssl_encrypt. () to implement decryption and encryption. Here, through the encapsulation class, two implementation methods are implemented to implement
Two methods of encryption and decryption steps:
Return the original data (array) during decryption --->Encryption-->Encrypted string-->Decryption-->Original array|| JSON string-->Encryption-->Encrypted string-->Decryption-->Original JSON character String || String—->Encryption—->Encrypted string—->Decrypt—->Original string)
Used below PHP7.1
Class method
What needs to be noted in this class is the key: The key length corresponding to the algorithm: The length of the encryption key of AES-128, 192 and 256 is 16, 24 respectively. and 32-bit
<?php namespace aes; class AesT { private $_bit = MCRYPT_RIJNDAEL_256; private $_type = MCRYPT_MODE_CBC; private $_key = 'ThisIsYourAesKey'; // 密钥 必须16位 24位 32位 private $_use_base64 = true; private $_iv_size = null; private $_iv = null; /** * @param string $_key 密钥 * @param int $_bit 默认使用128字节 支持256、192、128 * @param string $_type 加密解密方式 默认为ecb 支持cfb、cbc、nofb、ofb、stream、ecb * @param boolean $_use_base64 默认使用base64二次加密 */ public function __construct($_key = '', $_bit = 128, $_type = 'ecb', $_use_base64 = true) { // 加密字节 if (192 === $_bit) { $this->_bit = MCRYPT_RIJNDAEL_192; } elseif (128 === $_bit) { $this->_bit = MCRYPT_RIJNDAEL_128; } else { $this->_bit = MCRYPT_RIJNDAEL_256; } // 加密方法 if ('cfb' === $_type) { $this->_type = MCRYPT_MODE_CFB; } elseif ('cbc' === $_type) { $this->_type = MCRYPT_MODE_CBC; } elseif ('nofb' === $_type) { $this->_type = MCRYPT_MODE_NOFB; } elseif ('ofb' === $_type) { $this->_type = MCRYPT_MODE_OFB; } elseif ('stream' === $_type) { $this->_type = MCRYPT_MODE_STREAM; } else { $this->_type = MCRYPT_MODE_ECB; } // 密钥 if (!empty($_key)) { $this->_key = $_key; } // 是否使用base64 $this->_use_base64 = $_use_base64; $this->_iv_size = mcrypt_get_iv_size($this->_bit, $this->_type); $this->_iv = mcrypt_create_iv($this->_iv_size, MCRYPT_RAND); } /** * 加密 * @param string $string 待加密字符串 * @return string */ public function encode($string) { // if (MCRYPT_MODE_ECB === $this->_type) { $encodeString = mcrypt_encrypt($this->_bit, $this->_key, json_encode($string), $this->_type); } else { $encodeString = mcrypt_encrypt($this->_bit, $this->_key, json_encode($string), $this->_type, $this->_iv); } if ($this->_use_base64) { $encodeString = base64_encode($encodeString); } return $encodeString; } /** * 解密 * @param string $string 待解密字符串 * @return string */ public function decode($string) { if ($this->_use_base64) { $string = base64_decode($string); } if (MCRYPT_MODE_ECB === $this->_type) { $decodeString = mcrypt_decrypt($this->_bit, $this->_key, $string, $this->_type); } else { $decodeString = mcrypt_decrypt($this->_bit, $this->_key, $string, $this->_type, $this->_iv); } return $decodeString; } }
Use
<?php use aes\AesT; class Test{ public function index() { $data1 = ['status' => '1', 'info' => 'success', 'data' => [['id' => 1, 'name' => '大房间', '2' => '小房间']]]; //$data2 = '{"status":"1","info":"success","data":[{"id":1,"name":"\u5927\u623f\u95f4","2":"\u5c0f\u623f\u95f4"}]}'; //$data3 = 'PHP AES cbc模式 pkcs7 128加密解密'; $objT = new AesT(); $resT = $objT->encode($data1);//加密数据 var_dump($resT); var_dump($objT->decode($resT));//解密 } }
PHP7.1 or above use
Class methods
AES-128-CBC, AES-192-CBC and AES-256-CBC The length of the encryption key is 16, 24 and 32 bits respectively
##Among the four parameters of openssl_encrypt(), you need to pay attention to the fourth parameter :
0: Automatically pad the plain text, and the returned data is base64 encoded.
1: OPENSSL_RAW_DATA, Automatically pad the plain text, But the returned result is not base64 encoded.
2 : OPENSSL_ZERO_PADDING, 自动对明文进行 0 填充, 返回的结果经过 base64 编码
<?php namespace aes; class Aes { public static $key = ''; public static $iv = ''; public static $method = ''; public function __construct() { //加密key self::$key = md5('AeSNJkBfhHmJqLzHL', true); //保证偏移量为16位 self::$iv = md5('HfgUdCliBjKjuRfa', true); //加密方式 # AES-128-CBC AES-192-CBC AES-256-CBC self::$method = 'AES-128-CBC'; } /** * @desc 加密 * @param $data * @return false|string */ public function aesEn($data) { return base64_encode(openssl_encrypt(json_encode($data), self::$method, self::$key, OPENSSL_RAW_DATA, self::$iv)); } /** * @desc 解密 * @param $data * @return false|string */ public function aesDe($data) { $tmpData = openssl_decrypt(base64_decode($data), self::$method, self::$key, OPENSSL_RAW_DATA, self::$iv); return is_null(json_decode($tmpData)) ? $tmpData : json_decode($tmpData, true); } }
使用
<?php use aes\Aes; class Test { public function aes() { $obj = new Aes(); $data = ['status' => '1', 'info' => 'success', 'data' => [['id' => 1, 'name' => '大房间', '2' => '小房间']]]; //$data = '{"status":"1","info":"success","data":[{"id":1,"name":"\u5927\u623f\u95f4","2":"\u5c0f\u623f\u95f4"}]}'; //$data = 'PHP AES cbc模式 pkcs7 128加密解密'; $res = $obj->aesEn($data);//加密数据 var_dump($res); var_dump($obj->aesDe($res));//解密 } }
使用该加密解密类时,如果将两个类整合到一个类中,需要通过PHP_VERSION获取当前PHP版本
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