SYSTEM AND METHOD OF MIXED MULTIVARIATE DIGITAL SIGNATURE
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United States of America Patent
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Issued Date -
Mar 9, 2017
app pub date -
Dec 2, 2014
filing date -
May 26, 2014
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Abstract
A system of mixed multivariate digital signature is disclosed. The system includes a signature module configured to sign a message to be signed, and a verification module configured to verify a signature. The signature module includes a data input/output port, a single-pole double-throw switch, a processor, an affine transformation component, a random generator, a linear equations solving component, and an affine transformation inversion component. The verification module includes a data input/output port, a single-pole double-throw switch, a processor and a public key verification component. The system and its method disclosed, under choosing appropriate parameters, can resist known algebraic attacks of multivariate public key cryptosystems, such as the Separation Attack, the Rank Attack, the Direct Attack and the Exhaustive Search Attack, etc. The security level of the system is greater than 284 and its signing speed is quite fast.
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