Methods for transferring among key holders in encoding and cryptographic systems the right to decode and decrypt messages in a way that does not explicitly reveal decoding and decrypting keys used and the original messages. Such methods are more secure and more efficient than typical re-encoding and...http://www.google.com/patents/US7286665?utm_source=gb-gplus-sharePatent US7286665 - System and method for transferring the right to decode messages
System and method for transferring the right to decode messages
