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PROXY SYSTEM FOR SECURITY PROCESSING WITHOUT ENTRUSTING CERTIFIED SECRET INFORMATION TO A PROXY

  • US 20130086378A1
  • Filed: 09/28/2012
  • Published: 04/04/2013
  • Est. Priority Date: 09/29/2011
  • Status: Active Grant
First Claim
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1. A security processing proxy system, wherein a proxy server which acts for a first communication unit to conduct security processing with a second communication unit, the security processing including key exchange processing, authentication processing or processing for providing compatibility of an encryption scheme,said first communication unit holding a public key of said first communication unit certified by a certification authority on a public key infrastructure (PKI) as well as a secret key of said first communication unit or its own secret information as a public key certificate of said first communication unit,said first communication unit comprising:

  • a delegation information generator using the secret information of said first communication unit to generate delegation information required for the security processing; and

    a delegation information notifier supplying the delegation information to said proxy server,said proxy server comprising;

    a delegation information acquirer acquiring the delegation information from said first communication unit; and

    a security processing proxy transmitting the delegation information to said second communication unit to perform the security processing with said second communication unit,said second communication unit comprising;

    a receiver receiving the delegation information from said proxy server; and

    a security processor using a certification authority public key held for verifying the public key certificate as being issued by the certification authority on the PKI to certify that the delegation information is generated by said first communication unit to thereby carryout the security processing with said proxy server.

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