Electrical computers and digital processing systems: support – Data processing protection using cryptography – Tamper resistant
Reexamination Certificate
2005-10-25
2005-10-25
Zand, Kambiz (Department: 2132)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
Tamper resistant
C380S281000, C380S282000, C380S284000, C380S285000
Reexamination Certificate
active
06959390
ABSTRACT:
A data processing system and method are disclosed for maintaining secure user private keys in a non-secure storage device. A master key pair is established for the system. The master key pair includes a master private key and a master public key. The master key pair is stored in a protected storage device. A unique user key pair is established for each user. The user key pair includes a user private key and a user public key. The user private key is encrypted utilizing the master public key. The encrypted user private key is stored in the non-secure storage device, wherein the encrypted user private key is secure while stored in the non-secure storage device.
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Challener David Carroll
Cromer Daryl Carvis
Davis Mark Charles
Elliott Scott Thomas
Locker Howard Jeffrey
Dillon & Yudell LLP
Magistrale Anthony M.
McConnell Daniel E.
Zand Kambiz
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