Patent ID: 9742564
Date: 2017-08-22
CPC Classifications: G06F,H04L

Claim:
1. A method for making data in a data set inaccessible comprising: generating a data encryption key (i) configured to encrypt data within a data set of a copy-on-write transaction based file system and (ii) associated with a set of monotonically increasing transaction identifiers, each indicating when a corresponding block of data was written at a particular location, of the copy-on-write transaction based file system; wrapping the data encryption key with a wrapping key; creating an encrypted data set with the data encryption key; storing the wrapped data encryption key with the encrypted data set indexed by at least one of the set of monotonically increasing transaction identifiers; receiving a command to delete the encrypted data set; and altering or changing the wrapping key in response to the command to make data in the encrypted data set inaccessible.