...the Register has written an excellent analysis of the recent jailing of a schizophrenic man for refusal to release cryptographickeys to the police. This was a scenario foreseen when RIPA was introduced, but is the first high-profile example...
http://www.computerweekly.com/blogs/the-data-trust-blog/
...Lets Remote Users Determine CryptographicKeys SecurityTracker Alert ID...guessing attacks to determine cryptographickeys. Systems based on Debian...including Ubuntu Linux. All cryptographickeys generated may be affected...
http://www.SecurityTracker.com/alerts/2008/May/1020017.html
...include symmetric and asymmetric cryptographickeys, digital certificates, and...include the ability to generate cryptographickeys, register objects with the...retrieval, and deletion of cryptographickeys. Vendors intend to deliver...
http://xml.coverpages.org/ni2009-02-27-a.html