Cryptography – Key management – Having particular key generator
Reexamination Certificate
2006-03-21
2006-03-21
Trammell, James (Department: 3621)
Cryptography
Key management
Having particular key generator
C380S044000, C380S277000, C380S259000, C705S071000, C713S171000
Reexamination Certificate
active
07016495
ABSTRACT:
A method of securing an object at an access level includes selecting a profile for a user, including a credential having an encrypted credential public key, an encrypted credential public key encryption key, and a multiple-level access identifier. A working key is generated by binding a domain value with a random value. The object is encrypted with the working key. A random value encryption key is generated based on the shared value by decrypting the credential public key encryption key with the profile key encryption key, decrypting the credential public key with the credential public key encryption key, generating an ephemeral key pair, and generating a shared value based on the ephemeral private key and the credential public key. The random value is encrypted with the random value encryption key, and the encrypted object, the ephemeral public key, and the encrypted random value are provided for an authorized recipient.
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Domangue Ersin
Scheidt Edward M.
Agwumezie Charlie C.
IP Strategies
Tecsec, Inc.
Trammell James
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