# Week 9 Update 9.1 During Week 9 I finished with the sponge function for the Poseidon permutation. Te following commits were made for this: * https://github.com/mdvillagra/poseidon-rust/commit/42c52fdadb108a9947e8824b8fda9ab8e6e02964 * https://github.com/mdvillagra/poseidon-rust/commit/7a47d58594666424b495ebc268f1b393a345f591 * https://github.com/mdvillagra/poseidon-rust/commit/b52f2de526f12f7cd749ee489a026dbdd5fa15b3 * https://github.com/mdvillagra/poseidon-rust/commit/996c33ef35f7e739714bbae6c8e106da5e99d944 * https://github.com/mdvillagra/poseidon-rust/commit/4a4b66c7affc7056d441568c3b4135c66d922773 Currently, I am working on implementing most of the field instantiations from the arkworks library. After that, my plan is to start with preparing the code the benchmarks. This week I expect to finish the different instantiations of Poseidon, and start with preparing the rust benches.