Comments on the "New Provably Secure Digital Signature Scheme"
Yanping Li · Journal of Huaihai Institute of Technology · 2009
In literature [4],a new provably secure digital signature(NPSDS) scheme in standard model is given.The hardness assumption of DRRSA problem lies in the mathematical foundation and atomic primitive of the NPSDS scheme.However,the DRRSA problem is proven contradictive,and logic errors are found in its security proof.Moreover,valid signatures can be forged by using the DRRSA problem,since its signature verification is excessively simple.