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How to implement DES encryption and decryption operations in PHP?
How to implement DES encryption and decryption operations in PHP?
Apr 01, 2025 am 08:18 AM
Detailed explanation of PHP DES encryption and decryption
This article introduces how to implement DES encryption and decryption in PHP. We will build a complete encryption function based on an existing decryption function and provide complete code examples.
First, we analyze the given decryption function:
/**
* Hexadecimal to string * @param string $hex
* @return string
*/
public function hextostr(string $hex)
{
$string = "";
for ($i = 0; $i hextostr($str));
return openssl_decrypt($base64, 'des-ecb', $key);
}
Based on this, we create a class that contains encryption and decryption methods:
<?php class DES {
private $key;
public function __construct($key) {
$this->key = $key;
}
/**
* String to hexadecimal* @param string $str
* @return string
*/
private function strToHex(string $str) {
$hex = '';
for ($i = 0; $i key);
return $this->strToHex($base64);
}
/**
* Decryption* @param string $str
* @return string
*/
public function desDecrypt(string $str) {
$base64 = base64_decode($this->hexToStr($str));
return openssl_decrypt($base64, 'des-ecb', $this->key);
}
}
$key = "testkey";
$des = new DES($key);
$name = "123";
$encryptedName = $des->desEncrypt($name);
echo "encrypted: " . $encryptedName . "\n";
$decryptedName = $des->desDecrypt($encryptedName);
echo "Decrypted: " . $decryptedName . "\n";
?>
This code defines DES class, including desEncrypt and desDecrypt methods for encryption and decryption, respectively. strToHex and hexToStr methods are used for conversion between strings and hex strings. Finally, we verified the integrity of encryption and decryption with a test case. Please make sure your PHP environment has the OpenSSL extension installed. The key "testkey" is only used for examples. Please use a more secure key generation method in actual applications.
The above is the detailed content of How to implement DES encryption and decryption operations in PHP?. For more information, please follow other related articles on the PHP Chinese website!
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