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