Linux Means Business: Security and Authentication with Digital Signatures

How one university uses PGP and digital signatures to make its network secure.

This scheme reduces the security requirements in the labs, but increases the precautions that need to be taken in the Field Staff's offices. Their PCs will have the secret keys on them, and plans should be made for when a computer is “compromised”. A possible fix is to give each education center a separate key set and put all possible public keys on the servers. If a system/key/passphrase is stolen, that particular key set is revoked and not used any more.

PGP and MD5 Resources

Robb Shecter is a longtime Unix user and has been a Linux fan since v. 0.98. He's interested in object-oriented design, Java, IP routing and bass guitar. He's currently a network and Unix specialist at the University of Maryland European Division, and can be reached at