Encryption device and decryption device for information conveyed by asynchronous transfer mode cells
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United States of America Patent
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Jul 6, 1999
Grant Date -
N/A
app pub date -
Dec 17, 1996
filing date -
Dec 18, 1995
priority date (Note) -
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Abstract
An encryption device can be used to encrypt information units conveyed by cells that are broadcast from an optical broadcast node to network units by a passive optical network. Each cell conveys at least one information unit and each information unit is addressed to a respective subscriber terminal. The device includes an encryption system that receives in clear at least one key from at least one decryption device located in a network unit. Applications include ATM telecommunication networks.
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