Zero knowledge document comparison between mutually...

Details Zero knowledge document comparison between mutually... Zero knowledge document comparison between mutually...

G - Physics

09

C

G09C 1/00 (2006.01) H04L 9/12 (2006.01) H04L 9/28 (2006.01) H04L 9/32 (2006.01)

Patent

CA 2413690

Prior zero-knowledge protocols are used for exchanging secret keys, but not for comparing documents. The present invention provides a method of zero-knowledge document comparison between mutually distrustful parties by having each party exchange a set of random data and a shared hash function, applying the hash function to concatenations of the document and the sets of random data, and comparing the hashes.

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