System and method for encryption using transparent keys
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 28, 2003
Grant Date -
N/A
app pub date -
Sep 22, 2000
filing date -
Apr 28, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method, system, and computer program product are provided for encrypting and decrypting information, such as electronic mail. Each party has a secret, unique, randomly assigned value y. A sender and receiver first engage in a preliminary message exchange, or 'handshake. ' At this point, the sending party is given the y value of the receiving party. A key is then generated randomly or pseudo-randomly by the sending party. The key is used to encrypt a byte of information to be sent to the receiving party. A new key is generated for every byte to be encrypted. The resulting ciphertext is a combination of the output of a function F and a function P. F is a function of plaintext and the key. P is a function of the plaintext and the y value of the receiving party. During operation, y values and keys are not readily apparent to users.
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