The following publications are possibly variants of this publication:
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- Proposal for Piece in Hand Matrix: General Concept for Enhancing Security of Multivariate Public Key CryptosystemsShigeo Tsujii, Kohtaro Tadaki, Ryou Fujita. ieicet, 90-A(5):992-999, 2007. [doi]
- Nonlinear Piece In Hand Perturbation Vector Method for Enhancing Security of Multivariate Public Key CryptosystemsRyou Fujita, Kohtaro Tadaki, Shigeo Tsujii. iacr, 2008:298, 2008. [doi]
- Nonlinear Piece In Hand Matrix Method for Enhancing Security of Multivariate Public Key CryptosystemsShigeo Tsujii, Kohtaro Tadaki, Ryou Fujita. iacr, 2008:77, 2008. [doi]