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Parameterized hash functions for access control

  • US 5,757,915 A
  • Filed: 08/25/1995
  • Issued: 05/26/1998
  • Est. Priority Date: 08/25/1995
  • Status: Expired due to Term
First Claim
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1. A method for generating an encoded executable image, comprising:

  • performing a cryptographic keyed hash function on an executable program to generate a signature component using a first key having an associated set of access rights assigned to the executable program; and

    performing an encryption algorithm on the executable program using the signature component as a second key.

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