... Total 54.866 185 a. Predictors: (Constant), C5, C1, C4, C3, C2 b. Dependent Variable: C6 Coefficientsa Model Unstandardized Coefficients Standardized Coefficients t Sig. Collinearity ... Df 184 181.540 Sig. (2-tailed) .000 .000 Mean Difference .62354 .62354 Std. Error Difference .06566 .06509 95% Confidence Interval of the Difference Lower .49399 .49510 Upper .75308 .75197 ... nonrepudiation. Rivest Shamir Adleman (RSA), Diffie-Hellman, Error Correcting Code (ECC), El Gamal,...