High flexible sanitizing signature scheme based on bilinear maps

Abstract

A sanitizable signature scheme allows the sanitizer to alter the signed document using a disclosed policy that does not break the signing protocol. However, existing sanitizable signature schemes do not restrict the sanitizer, which leads to dishonest sanitizer and additional sanitizing problems. In this paper, a high flexible sanitizing signature scheme based on the bilinear mapping method that uses an arbiter to resolve the security problem is proposed. A security analysis shows that the proposed scheme retains the security requirement of sanitizable signatures and mitigates the disadvantages of related schemes. © 2010 Springer-Verlag Berlin Heidelberg.