Method and apparatus for composable block re-encryption of publicly distributed content

Secure communication from one encryption domain to another using a trusted module. In one embodiment, the invention includes receiving encrypted streamed content encrypted with a first key, generating a substitution key stream based on the first key and a second key, generating a transposition key s...

Full description

Saved in:
Bibliographic Details
Main Author GRAUNKE GARY L
Format Patent
LanguageEnglish
Published 19.02.2004
Edition7
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
Online AccessGet full text

Cover

More Information
Summary:Secure communication from one encryption domain to another using a trusted module. In one embodiment, the invention includes receiving encrypted streamed content encrypted with a first key, generating a substitution key stream based on the first key and a second key, generating a transposition key stream based on the first and second keys, and simultaneously decrypting and re-encrypting the encrypted streamed content using a combination of the substitution and transposition streams to produce re-encrypted streamed content encrypted with the second key.
Bibliography:Application Number: US20020222093