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Method and apparatus for data validation

  • US 7,330,969 B2
  • Filed: 10/11/2002
  • Issued: 02/12/2008
  • Est. Priority Date: 10/15/2001
  • Status: Active Grant
First Claim
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1. A computer system comprising:

  • a first computer entity arranged to derive a public key using first data and to encrypt second data using as encryption parameters both the public key and third-party public data;

    a second computer entity arranged to make the first data available to the first computing entity and to receive the encrypted second data from the first computer entity; and

    a third computer entity arranged to receive the public key and on validation of the first data received in the public key, to generate an associated private key, and to provide said associated private key to the second computer entity to allow decryption of the encrypted second data, the third computer entity being arranged to generate the private key in dependence both on private data related to said third-party public data, and on the public key.

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