Remarks on parameter selection for Server-aided Secret RSA computation schemes

In 1994 Burns and Mitchell reviewed the security and complexity of two types of schemes of Server-aided Secret Computation (SASC) protocols for RSA and gave a practical guidance for selecting parameters on the design of SASC protocols. In this Remark, we propose an active attack to show that some criterion of selecting parameters shall be added on to Burns and Mitchell's guidance to satisfy the security level as expected.