Cryptography – Communication system using cryptography – Data stream/substitution enciphering
Patent
1997-08-28
2000-01-04
Swann, Tod R.
Cryptography
Communication system using cryptography
Data stream/substitution enciphering
380 45, 380 37, H04L 918, H04L 906, H04K 102
Patent
active
060118490
ABSTRACT:
A data security system which produces a steganographic selection key by using an encryption key as both the key and as the data to be encrypted. First an encryption key is copied multiple times to form a data block which is then encrypted using the same key. The resulting ciphertext is then used as a selection key to select locations in a secondary data stream. These selected locations are then modified with the original data to be encoded. Restoration of the original data is accomplished by using the selection key to locate the modified areas of the data stream, extracting the data found there, and then decrypting the extracted data with the cyphertext.
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Darrow Justin T.
Swann Tod R.
SynData Technologies, Inc.
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