Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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9/00
Cryptographic mechanisms or cryptographic; arrangements for secret or secure communications; Network security protocols
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H04L9/06
the encryption apparatus using shift registers or memories for block-wise; or stream; coding, e.g. DES systems; or RC4; Hash functions; Pseudorandom sequence generators
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H04L9/065
Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
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H04L9/0656
Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
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H04L9/0662
with particular pseudorandom sequence generator
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