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Method for purchasing items over a non-secure communication channel

  • US 6,996,547 B1
  • Filed: 09/27/2000
  • Issued: 02/07/2006
  • Est. Priority Date: 09/27/2000
  • Status: Expired due to Fees
First Claim
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1. A method for purchasing items over a network using a secure communication device, the secure communication device including a host processor, a secure memory that includes a laser-scribed encryption key, and a non-secure memory for storing encrypted data, wherein sensitive data is encrypted within the secure memory using the laser-scribed encryption key and stored as encrypted data in the non-secure memory, the method comprising the steps of:

  • retrieving an encrypted credit card number and an encrypted secret key from the non-secure memory;

    decrypting the encrypted credit card and secret key with the laser-scribed encryption key;

    encrypting the credit card number with a communication encryption key, the communication encryption key being related to the secret key; and

    transferring the credit card number, as encrypted with the communication encryption key, over the network to a destination.

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