* Saqib Ali: > can anyone please shed more light on this patent. It seems like a > patent on the simple process of cryptographic erase......
Exactly. Niels Provos, "Encrypting Virtual Memory", USENIX Security 2000, looks like something pretty close to prior art: | We investigate several alternative solutions to prevent confidential | data from remaining on backing store, e.g. erasing data physically | from the backing store after pages on it become unreferenced. | However, we find that encryption of data on the backing store with | volatile random keys has several advantages over other approaches: | | * The content of a page disappears when its respective encryption key | is deleted, a very fast operation. [...] AFAICS, the patent does not reference the paper. -- Florian Weimer <[EMAIL PROTECTED]> BFK edv-consulting GmbH http://www.bfk.de/ Kriegsstraße 100 tel: +49-721-96201-1 D-76133 Karlsruhe fax: +49-721-96201-99 --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]