- GGH signature scheme
The

**Goldreich-Goldwasser-Halevi (GGH) signature scheme**is adigital signature scheme proposed in1995 and published in1997 , based on solving theclosest vector problem (CVP) in a lattice. The signer demonstrates knowledge of a good basis for the lattice by using it to solve CVP on a point representing the message; the verifier uses a bad basis for the same lattice to verify that the signature under consideration is actually a lattice point and is sufficiently close to the message point.The idea was not developed in detail in the original paper, which focussed more on the associated encryption algorithm.

GGH signatures form the basis for the

NTRUSign signature algorithm.**External links*** [

*http://www.research.ibm.com/people/s/shaih/pubs/ggh97a.html The webpage of the original paper*]

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