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Platform and method for establishing trust without revealing identity

  • US 7,366,305 B2
  • Filed: 09/30/2003
  • Issued: 04/29/2008
  • Est. Priority Date: 09/30/2003
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a request for information by a cryptographic device; and

    proving in a single direct proof that a value was signed by a signature key without revealing the value, the single direct proof comprises a plurality of exponentiations of which all of the plurality of exponentiations are conducted using a fixed exponent less in bit length than a bit length of a modulus (n), the plurality of exponentiations conducted are of the form ht mod P, where h is a unique number, t is randomly chosen between an interval between 0 and W, P is a prime number, and W is a number greater than 280.

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