An apparatus, method and/or computer-readable medium protects against use of a unity key in a public key infrastructure (PKI). A public key and a private key are acquired according to the PKI. A message is encrypted by the public key to obtain ciphertext. A portion of the ciphertext is compared with...http://www.google.com/patents/US20080069342?utm_source=gb-gplus-sharePatent US20080069342 - METHOD AND SYSTEM FOR PROTECTING AGAINST UNITY KEYS
