Patent ID: 6983365
Filing Date: 2006-01-03
Classification: H04L,Y10S

Abstract:
1. An encryption method comprising: computing a representation for each of two or more encryptable objects; encrypting each of the encryptable objects using its own representation as an encryption key, said encrypting defining a plurality of cipher objects each of which corresponds to an encryptable object; ascertaining from the cipher objects whether the corresponding encryptable objects are identical; and further comprising: encrypting each representation with a different key to provide a plurality of encrypted representations; defining individual key identifiers; associating each of the key identifiers with an individual key; and building a plurality of ordered tuples, each of which comprises: a single cipher object that represents all of the two or more encryptable objects; at least one key identifier; and at least one encrypted representation each of which being associated with a corresponding key identifier.