Efficient key derivation for end-to-end network security with traffic visibility

Efficient key derivation for end-to-end network security with traffic visibility

  • CN 101,834,840 A
  • Filed: 12/02/2009
  • Published: 09/15/2010
  • Est. Priority Date: 12/03/2008
  • Status: Active Application
First Claim
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1. system comprises:

  • Cipher engine, using following derivation formula is each derivation cryptographic key of a plurality of clients;

    client_key?MSB=

    AES128(base_key_1,

    client_ID),

    (1)Client_key LSB=AES128 (base_key_2, client_ID+pad) and (2)Client_key=client_key_MSB||client_key_LSB, wherein (1) and (2) executed in parallel;

    AndThe MAC processing unit is coupled to described cipher engine.

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