Key disclosure law
Key disclosure laws, also known as mandatory key disclosure, is legislation that requires individuals to surrender
Nations vary widely in the specifics of how they implement key disclosure laws. Some, such as Australia, give law enforcement wide-ranging power to compel assistance in decrypting data from any party. Some, such as Belgium, concerned with
Mandatory decryption is technically a weaker requirement than key disclosure, since it is possible in some cryptosystems to prove that a message has been decrypted correctly without revealing the key. For example, using
As a countermeasure to key disclosure laws, some personal privacy products such as
A problematic aspect of key disclosure is that it leads to a total compromise of all data encrypted using that key in the past or future; time-limited encryption schemes such as those of Desmedt et al. allow decryption only for a limited time period.