protected function _initCipher($cipher)
    {
        $key = $this->_encryption['key'];

        $keysizes = mcrypt_enc_get_supported_key_sizes($cipher);
        if (empty($keysizes) || ($this->_encryption['salt'] == true)) {
            $this->_srand();
            $keysize = mcrypt_enc_get_key_size($cipher);
            $key     = substr(md5($key), 0, $keysize);
        } else if (!in_array(strlen($key), $keysizes)) {

            throw new Zend_Filter_Exception('The given key has a wrong size for the set algorithm');
        }

        $result = mcrypt_generic_init($cipher, $key, $this->_encryption['vector']);
        if ($result < 0) {

            throw new Zend_Filter_Exception('Mcrypt could not be initialize with the given setting');
        }

        return $this;
    }
protected function _initCipher($cipher)
    {
        $key = $this->_encryption['key'];

        $keysizes = mcrypt_enc_get_supported_key_sizes($cipher);
        if (empty($keysizes) || ($this->_encryption['salt'] == true)) {
            $this->_srand();
            $keysize = mcrypt_enc_get_key_size($cipher);
            $key     = substr(md5($key), 0, $keysize);
        } else if (!in_array(strlen($key), $keysizes)) {

            throw new Zend_Filter_Exception('The given key has a wrong size for the set algorithm');
        }

        $result = mcrypt_generic_init($cipher, $key, $this->_encryption['vector']);
        if ($result < 0) {

            throw new Zend_Filter_Exception('Mcrypt could not be initialize with the given setting');
        }

        return $this;
    }
protected function _initCipher ( $ cipher ) { $ key = $ this -> _encryption [ 'key' ] ; $ keysizes = mcrypt_enc_get_supported_key_sizes ( $ cipher ) ; if ( empty ( $ keysizes ) || ( $ this -> _encryption [ 'salt' ] == true ) ) { $ this -> _srand ( ) ; $ keysize = mcrypt_enc_get_key_size ( $ cipher ) ; $ key = substr ( md5 ( $ key ) , 0 , $ keysize ) ; } else if ( ! in_array ( strlen ( $ key ) , $ keysizes ) ) { throw new Zend_Filter_Exception ( 'The given key has a wrong size for the set algorithm' ) ; } $ result = mcrypt_generic_init ( $ cipher , $ key , $ this -> _encryption [ 'vector' ] ) ; if ( $ result < 0 ) { throw new Zend_Filter_Exception ( 'Mcrypt could not be initialize with the given setting' ) ; } return $ this ; }
Initialises the cipher with the set key

@param  resource $cipher
@throws
@return resource
Initialises the cipher with the set key