Apparatus, method, and computer program product for achieving interoperability between cryptographic key recovery enabled and unaware systems
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United States of America Patent
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Apr 5, 2005
Issued Date -
N/A
app pub date -
Nov 4, 2002
filing date -
Dec 31, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus, method, and computer program product for achieving interoperability between cryptographic key recovery enabled and unaware systems. The method includes the steps of encrypting data using a cryptography key to generate ciphertext; generating a key recovery block containing key recovery information for the ciphertext; determining whether a receiver for the ciphertext is key recovery unaware; and sending the key recovery block to a key recovery client when it is determined that the receiver is key recovery unaware. In a preferred embodiment, the ciphertext is sent to the receiver only after receiving confirmation from the key recovery client of the receipt of the key recovery block. Also in a preferred embodiment, the key recovery block is sent as part of an Internet Message Control Protocol (ICMP) message.
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