Information security – Prevention of unauthorized use of data including prevention... – Access control
Reexamination Certificate
2004-07-30
2008-12-02
Simitoski, Michael J (Department: 2134)
Information security
Prevention of unauthorized use of data including prevention...
Access control
C726S031000, C726S033000, C713S172000, C380S285000, C705S055000, C705S059000
Reexamination Certificate
active
07461406
ABSTRACT:
A recording system for applying access control processing to input data content and for recording access-controlled data content on a computer readable storage medium. The recording system includes an encryption apparatus for encrypting portions of the input data content and an access control memory device which securely stores information from which a private key of a public key/private key pair associated with a data content recording user or user group is derivable. The encryption apparatus and the access control memory device co-operate to provide access control data including content recorder access control data and default access control data. The default content access control data provides the same level of access to the input data content as the level of access available to the data content recording user/user group. A recorder is provided for recording the encrypted input data content and the content access control data on the computer readable storage medium.
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Alves-Moreira Emmanuel
Hooper Daniel Luke
Pelly Jason Charles
Tapson Daniel Warren
Taylor Andrew Robert
Simitoski Michael J
Sony United Kingdom Limited
Sony, Spivak, McClelland, Maier & Neustadt, P.C.
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