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  • H04L9/00
    		•  Arrangements for secret or secure communications; Network security protocols [1, 2006.01, 2022.01] HB CC 5J104
  • H04L9/06
    		•  .the encryption apparatus using shift registers or memories for blockwise coding, e.g. D.E.S. systems [5, 2006.01] HB CC 5J104
  • H04L9/06@A
    		•  DES HB CC 5J104
  • H04L9/06@B
    		•  FEAL HB CC 5J104
  • H04L9/06@Z
    		•  Others HB CC 5J104
  • H04L9/08
    		•  .Key distribution [5, 2006.01] HB CC 5J104
  • H04L9/08@A
    		•  Concealment and encryption of keys HB CC 5J104
  • H04L9/08@B
    		•  Generation by way of delivery and communication routes for keys HB CC 5J104
  • H04L9/08@C
    		•  .Decentralized, e.g. not requiring any center HB CC 5J104
  • H04L9/08@D
    		•  .Distributed management, e.g. generating and delivering keys based on the initial information registered to a center, such as ID HB CC 5J104
  • H04L9/08@E
    		•  related to common keys HB CC 5J104
  • H04L9/08@F
    		•  related to public keys HB CC 5J104
  • H04L9/08@Z
    		•  Others HB CC 5J104
  • H04L9/10
    		•  .with particular housing, physical features or manual controls [5, 2006.01] HB CC 5J104
  • H04L9/10@A
    		•  Combined with key management HB CC 5J104
  • H04L9/10@Z
    		•  Others, e.g. physical unclonable function [PUF], artifact-metrics HB CC 5J104
  • H04L9/12
    		•  .Transmitting and receiving encryption devices synchronised or initially set up in a particular manner [5, 2006.01] HB CC 5J104
  • H04L9/14
    		•  .using a plurality of keys or algorithms [5, 2006.01] HB CC 5J104
  • H04L9/16
    		•  ..the keys or algorithms being changed during operation [5, 2006.01] HB CC 5J104
  • H04L9/18
    		•  .Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems [5, 2006.01] HB CC 5J104
  • H04L9/20
    		•  ..Pseudorandom key sequence combined elementfor-element with data sequence [5, 2006.01] HB CC 5J104
  • H04L9/22
    		•  ...with particular pseudorandom sequence generator [5, 2006.01] HB CC 5J104
  • H04L9/22,100
    		•  ....by adding key signals for making the desired signal unintelligible HB CC 5J104
  • H04L9/22,200
    		•  .....Arrangement for generating key encryption characters HB CC 5J104
  • H04L9/24
    		•  ....sequence produced by more than one generator [5, 2006.01] HB CC 5J104
  • H04L9/26
    		•  ....producing a nonlinear pseudorandom sequence [5, 2006.01] HB CC 5J104
  • H04L9/28
    		•  .using particular encryption algorithm [5, 2006.01] HB CC 5J104
  • H04L9/30
    		•  ..Public key, i.e. encryption algorithm being computationally infeasible to invert and users' encryption keys not requiring secrecy [5, 2006.01] HB CC 5J104
  • H04L9/30@A
    		•  Exponentiation ciphers, e.g. Rabin, Elgamal, reciprocal number cryptosystem HB CC 5J104
  • H04L9/30@B
    		•  .RSA HB CC 5J104
  • H04L9/30@Z
    		•  Others, e.g. Knapsack Cryptosystem HB CC 5J104
  • H04L9/32
    		•  .including means for verifying the identity or authority of a user of the system [5, 2006.01] HB CC 5J104
  • H04L9/32,100
    		•  ..relating to ID or passwords HB CC 5J104
  • H04L9/32,100@A
    		•  relating to operator ID or passwords HB CC 5J104
  • H04L9/32,100@B
    		•  relating to terminal ID HB CC 5J104
  • H04L9/32,100@C
    		•  Making ID confidential, e.g. encryption, making invisible HB CC 5J104
  • H04L9/32,100@D
    		•  Special ID, physical personal ID, e.g. transition ID, images, voice HB CC 5J104
  • H04L9/32,100@E
    		•  using ID recording media, e.g. ID cards, key devices, smart cards HB CC 5J104
  • H04L9/32,100@Z
    		•  Others HB CC 5J104
  • H04L9/32,200
    		•  ..relating to authentication and signature HB CC 5J104
  • H04L9/32,200@A
    		•  using a symmetric system, i.e. in which the authenticator and authenticatee share the same information HB CC 5J104
  • H04L9/32,200@B
    		•  using a asymmetric system, i.e. in which the authenticatee have some information that the authenticator do not know HB CC 5J104
  • H04L9/32,200@C
    		•  .by zero-knowledge proof HB CC 5J104
  • H04L9/32,200@D
    		•  having an authentication center HB CC 5J104
  • H04L9/32,200@E
    		•  Message authentication HB CC 5J104
  • H04L9/32,200@F
    		•  Entity authentication HB CC 5J104
  • H04L9/32,200@Z
    		•  Others, e.g. Blockchain HB CC 5J104
  • H04L9/34
    		•  .Bits, or blocks of bits, of the telegraphic message being interchanged in time [5, 2006.01] HB CC 5J104
  • H04L9/36
    		•  .with means for detecting characters not meant for transmission [5, 2006.01] HB CC 5J104
  • H04L9/38
    		•  .Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers [5, 2006.01] HB CC 5J104
  • H04L9/40
    		•  .Network security protocols [2022.01] HB CC 5J104
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