How can PHP utilize the OpenSSL library for encryption and decryption tasks?

To utilize the OpenSSL library for encryption and decryption tasks in PHP, you can use the openssl_encrypt and openssl_decrypt functions provided by the library. These functions allow you to encrypt and decrypt data using various encryption algorithms and modes supported by OpenSSL. 

// Encrypt data using OpenSSL
function encryptData($data, $key, $iv) {
    return openssl_encrypt($data, 'AES-256-CBC', $key, 0, $iv);
}

// Decrypt data using OpenSSL
function decryptData($data, $key, $iv) {
    return openssl_decrypt($data, 'AES-256-CBC', $key, 0, $iv);
}

// Example usage
$data = "Hello, World!";
$key = openssl_random_pseudo_bytes(32);
$iv = openssl_random_pseudo_bytes(16);

$encryptedData = encryptData($data, $key, $iv);
echo "Encrypted Data: " . $encryptedData . "\n";

$decryptedData = decryptData($encryptedData, $key, $iv);
echo "Decrypted Data: " . $decryptedData . "\n";

Keywords

PHP OpenSSL library encryption decryption tasks

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