From 216436d027777d3c81baa70e478a6c017cd244bc Mon Sep 17 00:00:00 2001
From: Jonathan LEI <me@xjonathan.dev>
Date: Wed, 18 Sep 2024 11:01:09 +0800
Subject: [PATCH] chore: add `poseidon_permute_comp` back

---
 starknet-crypto/src/lib.rs           | 4 +++-
 starknet-crypto/src/poseidon_hash.rs | 5 +++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/starknet-crypto/src/lib.rs b/starknet-crypto/src/lib.rs
index 321f4e5f..ce10c1f3 100644
--- a/starknet-crypto/src/lib.rs
+++ b/starknet-crypto/src/lib.rs
@@ -35,7 +35,9 @@ pub use starknet_types_core::felt::Felt;
 
 pub use pedersen_hash::pedersen_hash;
 
-pub use poseidon_hash::{poseidon_hash, poseidon_hash_many, poseidon_hash_single, PoseidonHasher};
+pub use poseidon_hash::{
+    poseidon_hash, poseidon_hash_many, poseidon_hash_single, poseidon_permute_comp, PoseidonHasher,
+};
 
 pub use ecdsa::{get_public_key, recover, sign, verify, ExtendedSignature, Signature};
 
diff --git a/starknet-crypto/src/poseidon_hash.rs b/starknet-crypto/src/poseidon_hash.rs
index 4155f056..ff557ded 100644
--- a/starknet-crypto/src/poseidon_hash.rs
+++ b/starknet-crypto/src/poseidon_hash.rs
@@ -97,6 +97,11 @@ pub fn poseidon_hash_many<'a, I: IntoIterator<Item = &'a Felt>>(msgs: I) -> Felt
     state[0]
 }
 
+/// Poseidon permutation function.                                                            
+pub fn poseidon_permute_comp(state: &mut [Felt; 3]) {
+    Poseidon::hades_permutation(state)
+}
+
 #[cfg(test)]
 mod tests {
     use starknet_types_core::hash::StarkHash;