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Electronic lottery system and its operating method and computer-readable recording medium in which the electronic lottery program code is stored

  • US 6,595,855 B2
  • Filed: 01/21/1998
  • Issued: 07/22/2003
  • Est. Priority Date: 01/27/1997
  • Status: Expired due to Term
First Claim
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1. A server for an electronic lottery system, the server comprising a programmable machine programmed to perform processing comprising:

  • generating a random number x;

    determining a encrypting function H and a result function R;

    encrypting the random number x using the encrypting function H to generate an encrypted random number H(x);

    publishing the encrypting function H, the result function R and the encrypted random number H(x);

    receiving from terminals (i) of the lottery system respective random numbers ri;

    calculating a lottery result R(x, r) using the result function R, the random number x, and the random numbers ri; and

    publishing the lottery result R(x, r) the random number x, and the random numbers ri.

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