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Method and apparatus for secure processing of cryptographic keys

  • US 6,557,104 B2
  • Filed: 05/02/1997
  • Issued: 04/29/2003
  • Est. Priority Date: 05/02/1997
  • Status: Expired due to Term
First Claim
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1. A method for secure processing of cryptographic keys, comprising:

  • loading, by a system processor, a cryptographic program and any associated data into a secure memory, said secure memory only being accessible by the system processor in a secure mode;

    loading, by the system processor, a cryptographic key into the secure memory;

    detecting a request for security operation by an application program;

    the system processor, entering the secure mode;

    performing the security operation in the secure memory using the cryptographic program and cryptographic key;

    the system processor, exiting the secure mode; and

    passing any cryptographic information to the application program;

    the system processor, performing other operations in a system memory, including executing an operating system, when the processor is not in the secure mode.

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