Selective modification of encrypted application layer data in a transparent security gateway
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United States of America Patent
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Jan 24, 2017
Issued Date -
N/A
app pub date -
Aug 21, 2015
filing date -
May 7, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
According to one embodiment, a transparent security gateway is coupled between a client end station (CES) and a web application server (WAS). The security gateway monitors an encryption protocol handshake between the CES and the WAS to capture, using a provided private key of the WAS, a generated symmetric key to be used for an encryption layer connection. Using the captured symmetric key, the security gateway receives an encrypted connection record of the encryption layer connection, decrypts the encrypted connection record to yield a plaintext connection record, modifies the plaintext connection record, encrypts the modified plaintext connection record using the symmetric key, and transmits one or more packets carrying the encrypted modification plaintext connection record instead of the received encrypted connection record such that neither the CES or WAS is aware of the modification of the encrypted data.
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