On Wed, 26 Apr 2006 22:24:22 -0400, Derek Atkins <[EMAIL PROTECTED]> wrote:

> Quoting "Steven M. Bellovin" <[EMAIL PROTECTED]>:
> 
> > In an article on disk encryption
> > (http://www.theregister.co.uk/2006/04/26/pgp_infosec/), the following
> > paragraph appears:
> >
> >     BitLocker has landed Redmond in some hot water over its insistence
> >     that there are no back doors for law enforcement. As its
> >     encryption code is open source, PGP says it can guarantee no back
> >     doors, but that cyber sleuths can use its master keys if
> >     neccessary.
> >
> > What is a "master key" in this context?
> 
> ADK, the Additional Decryption Key.   An enterprise with a Managed
> PGP Desktop installed base can set up an ADK and all messages get
> encrypted to the ADK in addition to the recipient's key.
> 
Ah -- corporate key escrow.  An overt back door for Little Brother, rather
than a covert one for Big Brother....

                --Steven M. Bellovin, http://www.cs.columbia.edu/~smb

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