Information processing apparatus and method, and computer...

Details Information processing apparatus and method, and computer... Information processing apparatus and method, and computer...

2011-02-08

2011-02-08

Moazzami, Nasser (Department: 2436)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

C713S189000, C725S031000

Reexamination Certificate

active

07886160

ABSTRACT:
An information processing apparatus for processing encrypted data input as a byte stream with dynamically changing decryption keys includes the following elements. An encrypted data receiving section receives encrypted data input as a byte stream, identifies a range of data that is decrypted using an identical key as a unit of decryption, extracts information necessary for decryption from the byte stream, and outputs encrypted data sets in which the extracted information is added to segments of the encrypted data. An encrypted data decrypting section sequentially decrypts the encrypted data by queuing the encrypted data sets while distributing the encrypted data sets to generate plaintext data. A plaintext processing section processes the generated plaintext data.

REFERENCES:
patent: 2004/0064688 (2004-04-01), Jacobs
patent: 2007/0083663 (2007-04-01), Tanabe et al.
patent: 2005-117458 (2005-04-01), None
“Digital Transmission Content Protection Specification”, vol. 1, Revision 1.4 (Informational Version), Feb. 28, 2005, pp. 1-81.
“Mapping DTCP to IP”, DTCP vol. 1, Supplement E, Revision 1.1 (Informational Version), Feb. 28, 2005, pp. 1-32.
“Darpa Internet Program Protocol Specification”, Internet Protocol, RFC: 791, Sep. 1981, pp. 1-52.

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