06226618 is referenced by 1442 patents and cites 68 patents.

Disclosed is a method and apparatus of securely providing data to a user's system. The data is encrypted so as to only be decryptable by a data decrypting key, the data decrypting key being encrypted using a first public key, and the encrypted data being accessible to the user's system, the method comprising the steps of: transferring the encrypted data decrypting key to a clearing house that possesses a first private key, which corresponds to the first public key; decrypting the data decrypting key using the first private key; re-encrypting the data decrypting key using a second public key; transferring the re-encrypted data decrypting key to the user's system, the user's system possessing a second private key, which corresponds to the second public key; and decrypting the re-encrypted data decrypting key using the second private key.

Title
Electronic content delivery system
Application Number
9/133519
Publication Number
6226618 (B1)
Application Date
August 13, 1998
Publication Date
May 1, 2001
Inventor
Jeffrey B Lotspiech
San Jose
CA, US
Kenneth Louis Milsted
Boynton Beach
FL, US
Christopher T Lehman
Delray Beach
FL, US
Marco M Hurtado
Boca Raton
FL, US
George Gregory Gruse
Lighthouse Point
FL, US
Edgar Downs
Fort Lauderdale
FL, US
Agent
Fleit Kain Gibbons Gutman & Bongini P L
US
Agent
Steven J Soucar
US
Steven J Meyers
US
Assignee
International Business Machines Corporation
NY, US
IPC
H04L 9/00
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