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US 7,069,591 B1Granted
System for encrypting data files of application programs
OwnerNeil Weicherinventor
Life of this patent
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Abstract
A system for encrypting data files of application programs is provided. The system includes a security file for encrypting and decrypting data files and for launching software applications. The invention further operates automatically without user intervention and as an addition to existing applications, whereby said applications need not be modified. The invention further decrypts data files only in the computer's memory and is capable of backing up data files to a remote location and tracking changes made to files.
Claims18
A system for encrypting data files, comprising:
- a computer;
- a storage device connected to said computer;
- an application loaded on said computer for storing and retrieving data files on said storage device;
- a program executing on said computer, independently of said application, for intercepting said data files to be stored by the application on said storage device to encrypt them before they are stored;
- said program includes an encrypt key for encrypting and decrypting data files and an application identifier for specifying which application to launch;
- and
- wherein said encrypt key and application identifier are stored together in an encrypted file on said storage device.
4 more elements
A method for encrypting a file comprising the steps of:
- generating a file based on specified parameters;
- varying a size of the file;
- selecting a passkey component from a list of possible passkey components;
- combining the file size and the passkey component to form a passkey;
- and
- using the passkey to encrypt the file.
3 more elements
Dependencies are inferred from the claim text.