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EncryptedData.php
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EncryptedData.php
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<?php
namespace MediaWiki\CheckUser;
class EncryptedData {
/** @var string|null The data symmetrically encrypted with a random key */
public $encString;
/** @var string|null Symmetric key, encrypted with the public key */
public $envKeys;
/**
* @var string algorithm name, passed into openssl 'method' param. Kept as a variable here in case
* the class definition needs to change, and we have serialized objects stored.
*/
private $algName;
/**
* @var int Hash of the public key, in case you've used multiple keys, and need to identify the
* correct private key
*/
private $keyHash;
/**
* Create an EncryptedData object from
*
* @param mixed $data Data/object to be encryted
* @param string $publicKey Public key for encryption
* @param string $algorithmName
*/
public function __construct( $data, $publicKey, $algorithmName = 'rc4' ) {
$this->keyHash = crc32( $publicKey );
$this->algName = $algorithmName;
$this->encryptData( serialize( $data ), $publicKey );
}
/**
* Decrypt the text in this object
*
* @param string $privateKey String with ascii-armored block,
* or the return of openssl_get_privatekey
* @return string|false plaintext
*/
public function getPlaintext( $privateKey ) {
$result = \openssl_open(
$this->encString,
$plaintextData,
$this->envKeys,
$privateKey,
$this->algName
);
if ( !$result ) {
return false;
}
return unserialize( $plaintextData );
}
/**
* Encrypt data with a public key
*
* @param string $data
* @param string $publicKey String with ascii-armored block,
* or the return of openssl_get_publickey
*/
private function encryptData( $data, $publicKey ) {
// @phan-suppress-next-line PhanTypeMismatchArgumentInternal
\openssl_seal( $data, $encryptedString, $envelopeKeys, [ $publicKey ], $this->algName );
$this->encString = $encryptedString;
// @phan-suppress-next-line PhanTypeArraySuspiciousNullable
$this->envKeys = $envelopeKeys[0];
}
}

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EncryptedData.php (1 KB)

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