Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate
2006-05-15
2011-12-06
Vu, Kim (Department: 2435)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
By stored data protection
C713S183000, C713S189000, C380S030000, C380S277000, C726S005000
Reexamination Certificate
active
08074078
ABSTRACT:
A method for securing data and resetting a password using a content protection key is provided, in which the content protection key itself is protected by a password. A content protection key is also protected at a data storage device with a key encryption key generated in collaboration with an additional device such as a server. The server stores a private key required to regenerate the key encryption key, but this private key is not provided from the server to the data storage device; rather, a public key derived from the private key is provided by the server. The data storage device combines the received public key and a further private key to derive the key encryption key; the further private key itself is not stored by the data storage device, but rather its matching public key is stored. The content protection key is then encrypted using a password and the derived key encryption key. If the password is lost, data from the server and from the data storage device may be combined to recreate the key encryption key.
REFERENCES:
patent: 5768373 (1998-06-01), Lohstroh et al.
patent: 6754349 (2004-06-01), Arthan
patent: 2003/0182584 (2003-09-01), Banes et al.
patent: 2003/0185398 (2003-10-01), Hypponnen
patent: 2003/0188201 (2003-10-01), Venkataramappa
patent: 2004/0139320 (2004-07-01), Shinohara
patent: 2004/0184616 (2004-09-01), Morten
patent: 2006/0041932 (2006-02-01), Cromer et al.
patent: 1079565 (2001-02-01), None
patent: 2004077782 (2004-09-01), None
Extended European Search Report dated Dec. 27, 2010 from EP10185150.9.
Examiner's Report dated Jan. 11, 2011 from CA2588309.
Brown Michael K.
Brown Michael S.
Little Herbert A.
Dimock Stratton LLP
Research In Motion Limited
To Baotran N
Vu Kim
Wilson Jenna L.
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