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Methods for securely distributing computer software products

  • US 8,577,808 B2
  • Filed: 01/08/2010
  • Issued: 11/05/2013
  • Est. Priority Date: 01/31/2001
  • Status: Expired due to Term
First Claim
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1. A computer-implemented method for distributing a software module by a distribution server having access to a plurality of software modules, comprising:

  • encrypting said software module with an encryption key;

    distributing said encrypted software module, over a network, from said distribution server to storage of a computing device of a user;

    receiving information identifying the user;

    creating, based on the information identifying the user, a user public key and a user private key;

    sending the user public key to the computing device;

    receiving a client public key from the computing device, wherein the computing devices creates the client public key and a client private key based on information identifying the computing device;

    applying a first tier of encryption to a decryption key by encrypting the decryption key with the client public key, thereby creating an encrypted decryption key, and then applying a second tier of encryption to the decryption key by encrypting the encrypted decryption key with the user private key, thereby creating a two-tiered encrypted version of the decryption key; and

    transmitting the two-tiered encrypted version of the decryption key to the computing device of the user, wherein the decryption key, once removed of the two-tiered encryption at the computing device is used to decrypt the encrypted software module present at the storage of the computing device.

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