Update README.md

README.md

@@ -32,6 +32,7 @@ This repository contains several Rust crates that implement the different buildi
 
 * [`algebra`](algebra): Rust crate that provides finite fields and elliptic curves
 * [`dpc`](dpc): Rust crate that implements DPC schemes (the main cryptographic primitive in this repository)
+* [`ff-fft`](ff-fft): Rust crate that provides efficient finite field polynomial arithmetic based on finite field FFTs.
 * [`r1cs-core`](r1cs-core): Rust crate that defines core interfaces for a Rank-1 Constraint System (R1CS)
 * [`r1cs-std`](r1cs-std): Rust crate that provides various gadgets used to construct R1CS
 * [`gm17`](gm17): Rust crate that implements the zkSNARK of [Groth and Maller][GM17]