A system that can recover the keys but requires a sophisticated management system, otherwise the security of all encrypted data may be collapsed if a compromise exists.
Key recovery is a process used to recover encrypted information that does not involve the storing of the key or any part of the key with a third party. Many organizations find key recovery a preferable process to key escrows. The US government recently relaxed controls on the export of strong encryption based upon the development of key recovery technology by the computer industry.
Mechanism for determining the key used to encrypt some data, possibly through the use of an escrowed key.