Abstract: A technique, system, and computer program for protecting data stored by a computer system in a computing environment having a connection to a public network. The stored data is created and accessed by a software application, which encrypts it for storing and decrypts it for processing. A secret, immutable value specific to the computer system on which the software is running is combined with information identifying an authorized user in order to form the input key used by the encryption and decryption facilities of the software. Optionally, the secret value can be exposed to the user in order to move the encrypted data to another environment.

Abstract: Methods, systems and computer program products are provided for selecting from a plurality of items of date limited information an item of date limited information for transmission from a first data processing system having a first time and date to a second data processing system having a second time and date by selecting an item of date limited information if both a beginning and an end of a validity period of the date limited information are sufficiently distant from the first time and date.