Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2008-05-06
2008-05-06
Moise, Emmanuel L. (Department: 2137)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S194000, C713S179000, C726S005000, C726S019000, C380S044000, C380S277000
Reexamination Certificate
active
10980393
ABSTRACT:
Cryptographic systems and methods are provided in which authentication operations, digital signature operations, and encryption operations may be performed. Authentication operations may be performed using authentication information. The authentication information may be constructed using a symmetric authentication key or a public/private pair of authentication keys. Users may digitally sign data using private signing keys. Corresponding public signing keys may be used to verify user signatures. Identity-based-encryption (IBE) arrangements may be used for encrypting messages using the identity of a recipient. IBE-encrypted messages may be decrypted using appropriate IBE private keys. A smart card, universal serial bus key, or other security device having a tamper-proof enclosure may use the authentication information to obtain secret key information. Information such as IBE private key information, private signature key information, and authentication information may be stored in the tamper-proof enclosure.
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Appenzeller Guido
Boyen Xavier
Spies Terence
Gelagay Shewaye
Moise Emmanuel L.
Treyz G. Victor
Voltage Security, Inc.
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