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Method for downloading software from server to terminal

  • US 6,675,201 B1
  • Filed: 03/02/2000
  • Issued: 01/06/2004
  • Est. Priority Date: 03/03/1999
  • Status: Expired due to Fees
First Claim
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1. A method for downloading software from a server (128) to a terminal (100, 102), the method comprising the steps ofattaching to the software a certificate confirming the authenticity of the software manufacturer and the loader;

  • uploading the software from a source computer (134) to the server (128);

    calculating a check sum for the software and the certificate; and

    downloading the software from the server (128) to the terminal (100, 102), characterized in that the method further comprises the steps of;

    generating an electronic signature at the server (128) by calculating for the software and the certificate a common check sum which is encrypted by means of a secret key of the server, attaching the check sum confirming the authenticity of the software to the software at the server (128) before the software is downloaded to terminals;

    generating a second check sum at the terminal from the downloaded software, after the software has been downloaded;

    the encryption of the secret key is decrypted at the terminal and checking the authenticity of the software at the terminal by comparing the first check sum with the second.

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