friendica-addons/securemail/vendor/singpolyma/openpgp-php/lib/openpgp_openssl_wrapper.php

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<?php
if(function_exists('openssl_encrypt')) {
class OpenSSLWrapper {
public $cipher, $key, $iv, $key_size, $block_size;
function __construct($cipher) {
if($cipher != "CAST5-CFB") throw Exception("OpenSSLWrapper is only used for CAST5 right now");
$this->cipher = $cipher;
$this->key_size = 16;
$this->block_size = 8;
$this->iv = str_repeat("\0", 8);
}
function getBlockLengthInBytes()
{
return $this->block_size;
}
function getKeyLength() {
return $this->key_size << 3;
}
function setKey($key) {
$this->key = $key;
}
function setIV($iv) {
$this->iv = $iv;
}
function encrypt($data) {
return openssl_encrypt($data, $this->cipher, $this->key, OPENSSL_RAW_DATA|OPENSSL_ZERO_PADDING, $this->iv);
}
function decrypt($data) {
return openssl_decrypt($data, $this->cipher, $this->key, OPENSSL_RAW_DATA|OPENSSL_ZERO_PADDING, $this->iv);
}
}
}