sequra / src / Core / Implementation / BusinessLogic / Utility / class-encryptor.php

class-encryptor.php in seQura 3.2.0, at src/Core/Implementation/BusinessLogic/Utility/class-encryptor.php

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1	<?php
2	/**
3	* Encryptor implementation.
4	*
5	* @package SeQura\WC
6	*/
7
8	namespace SeQura\WC\Core\Implementation\BusinessLogic\Utility;
9
10	use SeQura\Core\BusinessLogic\Utility\EncryptorInterface;
11
12	/**
13	* Encryptor implementation.
14	*/
15	class Encryptor implements EncryptorInterface {
16
17	/**
18	* Get key used for encryption and decryption.
19	*/
20	private function get_key(): string {
21	return hash( 'sha256', AUTH_KEY, true );
22	}
23
24	/**
25	* Encrypts a given string.
26	*
27	* @param string $data
28	*/
29	public function encrypt( string $data ): string {
30	$nonce = random_bytes( SODIUM_CRYPTO_SECRETBOX_NONCEBYTES );
31	return base64_encode( $nonce . sodium_crypto_secretbox( $data, $nonce, $this->get_key() ) ); // use value from wp-config.php AUTH_KEY as key.
32	}
33
34	/**
35	* Decrypts a given string.
36	*
37	* @param string $encryptedData
38	* @throws \SodiumException
39	*/
40	public function decrypt( string $encryptedData ): string { // phpcs:ignore WordPress.NamingConventions.ValidVariableName.VariableNotSnakeCase
41	$data = base64_decode( $encryptedData );// phpcs:ignore WordPress.NamingConventions.ValidVariableName.VariableNotSnakeCase
42	$nonce = mb_substr( $data, 0, SODIUM_CRYPTO_SECRETBOX_NONCEBYTES, '8bit' );
43	$value = mb_substr( $data, SODIUM_CRYPTO_SECRETBOX_NONCEBYTES, null, '8bit' );
44	$result = sodium_crypto_secretbox_open( $value, $nonce, $this->get_key() );
45	return empty( $result ) ? '' : $result;
46	}
47	}
48