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Encryption

Introduction

ThinkPHP's encryption services provide a simple, convenient interface for encrypting and decrypting text via OpenSSL using AES-256 and AES-128 encryption.

Installation

You may install think-encryption via the Composer package manager:

composer require lingyun/think-encryption

Configuration

Before using ThinkPHP's encrypter, you must set the key configuration option in your config/encrypter.php configuration file. This configuration value is driven by the ENCRYPTER.KEY environment variable. You should use the php think encrypter:generate command to generate this variable's value since the key:generate command will use PHP's secure random bytes generator to build a cryptographically secure key for your application.

Using The Encrypter

Encrypting A Value

You may encrypt a value using the encryptString method provided by the Crypt facade. All encrypted values are encrypted using OpenSSL and the AES-256-CBC cipher.Furthermore, all encrypted values are signed with a message authentication code (MAC). The integrated message authentication code will prevent the decryption of any values that have been tampered with by malicious users:

use think\facade\Crypt;
use think\encryption\exception\EncryptException;

try {
    $encrypted = Crypt::encryptString($valueToBeEncrypted);
} catch (EncryptException $e) {
    //
}

Decrypting A Value

You may decrypt values using the decryptString method provided by the Crypt facade. If the value can not be properly decrypted, such as when the message authentication code is invalid, an think\encryption\exception\DecryptException will be thrown:

use think\encryption\exception\DecryptException;
use think\facade\Crypt;

try {
    $decrypted = Crypt::decryptString($encryptedValue);
} catch (DecryptException $e) {
    //
}