added EM-128 contraints

Author: shibammukherjee

faest.c

@@ -256,7 +256,7 @@ void faest_sign(uint8_t* sig, const uint8_t* msg, size_t msglen, const uint8_t*
   const unsigned int lambda        = params->faest_param.lambda;
   const unsigned int lambdaBytes   = lambda / 8;
   const unsigned int tau           = params->faest_param.tau;
-  const unsigned int tau0          = params->faest_param.t0;
+  const unsigned int tau0          = params->faest_param.tau0;
   const unsigned int ell_hat       = l + lambda * 2 + UNIVERSAL_HASH_B_BITS;
   const unsigned int ell_hat_bytes = ell_hat / 8;