Methods, systems and computer program products for multi-level encryption
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United States of America Patent
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-
Jul 22, 2003
Issued Date -
N/A
app pub date -
Aug 9, 1999
filing date -
Aug 9, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Methods, systems and computer program products are provided which encrypt a document by dividing the document into at least a first portion having a first security level and a second portion having a second security level. The document is then encrypted utilizing at least two encryption keys so as to encrypt the first portion of the document with a first of the at least two encryption keys and so as to encrypt the second portion of the document with a second of the at least two encryption keys. Preferably, the document is sequentially encrypted utilizing at least two encryption keys so as to encrypt the first portion of the document with a first of the at least two encryption keys and so as to encrypt the first and the second portion of the document with a second of the at least two encryption keys. An encrypted document utilizing the encryption techniques of the present invention is also provided as are methods, systems and computer program products for decrypting such documents.
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