Method and apparatus for encrypted data stream transmission

Details Method and apparatus for encrypted data stream transmission Method and apparatus for encrypted data stream transmission

2006-01-13

2008-05-20

Barron, Gilberto (Department: 2132)

Information security

Prevention of unauthorized use of data including prevention...

C380S255000, C380S268000, C726S014000

Reissue Patent

active

RE040334

ABSTRACT:
A method and apparatus for the transmission and reception of scrambled data is disclosed. In some embodiments, the method and apparatus includes transmitting a scrambled data stream to a decoder, sending the scrambled data stream to a portable security module inserted in the decoder, descrambling the scrambled data stream, encrypting a descrambled data stream, and using the encrypted data stream to the decoder, decrypting the encrypted data stream, and using the decrypted data stream.

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Bruce Schneier, Applied Cryptography, 1996, John Wiley & Sons Inc., Second Edition, pp. 176, 398, 399.
Schneier, “Applied Cryptography”, 1995, pp. 176, 398, 399.

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