Computer system for protecting software and a method for protecting software
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United States of America Patent
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Jan 13, 2004
Grant Date -
N/A
app pub date -
Oct 2, 1997
filing date -
May 28, 1997
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Abstract
A method for protecting an item of software, wherein at least one challenge means is associated with said protected item of software, and at least one response means accesses one private keying material. The challenge means has no access to said private keying material. The response means proves to the challenge means that the response means has access to the private keying material using an asymmetric probabilistic proof, e.g., zero knowledge proof. The challenge means validates this proof using the public keying material that corresponds to the response means' private keying material.
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