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Isolation of non-secure software from secure software to limit virus infection

  • US 5,802,275 A
  • Filed: 06/22/1994
  • Issued: 09/01/1998
  • Est. Priority Date: 06/22/1994
  • Status: Expired due to Term
First Claim
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1. A program-execution apparatus comprising:

  • means for receiving both encrypted programs and unencrypted programs;

    means for storing the received programs;

    means for executing the stored programs; and

    means for selectively preventing the executing means from executing the stored programs that were received unencrypted, while allowing the executing means to execute the stored programs that were received encrypted.

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