Public key cryptographic system having nested security levels
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United States of America Patent
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-
Sep 21, 1999
Issued Date -
N/A
app pub date -
Jul 8, 1997
filing date -
Nov 1, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of encrypted communication including creating a message and looking up a public key of a recipient. Then, encoding the message via a first encoding process using a first portion of the public key to generated an intermediate encoded message. The intermediate encoded message is encoded via a second encoding process using a second portion of the public key to generate a final encoded message. Then, the final encoded message is sent to a recipient. The public key may have a first key portion, a second key portion, and a third key portion, with the third key portion containing the encoded identity of a data element needed to decode a message encoded with the second key portion. The third key portion is encoded with the public key of a monitoring authority to enable the monitoring authority to more readily decode transmitted messages.
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