refactor: introducing re-export for poseidon2

noir-projects/aztec-nr/aztec/src/hash.nr

@@ -4,11 +4,9 @@ use dep::protocol_types::{
     GENERATOR_INDEX__L1_TO_L2_MESSAGE_SECRET, GENERATOR_INDEX__NULLIFIER, ARGS_HASH_CHUNK_COUNT,
     GENERATOR_INDEX__FUNCTION_ARGS, ARGS_HASH_CHUNK_LENGTH
 },
-    traits::Hash, hash::{pedersen_hash, silo_nullifier}
+    traits::Hash, hash::{pedersen_hash, poseidon2_hash, silo_nullifier, sha256_to_field}
 };
 
-use dep::protocol_types::hash::sha256_to_field;
-
 pub fn compute_secret_hash(secret: Field) -> Field {
     // TODO(#1205) This is probably not the right index to use
     pedersen_hash([secret], GENERATOR_INDEX__L1_TO_L2_MESSAGE_SECRET)

noir-projects/noir-contracts/contracts/key_registry_contract/src/main.nr

@@ -1,5 +1,4 @@
 contract KeyRegistry {
-  use dep::std::hash::poseidon2::Poseidon2::hash as poseidon2_hash;
   use dep::authwit::auth::assert_current_call_valid_authwit_public;
 
   use dep::aztec::{
@@ -21,6 +20,7 @@ contract KeyRegistry {
         GENERATOR_INDEX__CONTRACT_ADDRESS_V1,
         GENERATOR_INDEX__PUBLIC_KEYS_HASH
       },
+      hash::poseidon2_hash,
       traits::{
         Serialize,
         Deserialize,
@@ -86,17 +86,15 @@ contract KeyRegistry {
         outgoing_public_key,
         tagging_public_key,
         GENERATOR_INDEX__PUBLIC_KEYS_HASH,
-      ],
-      5
+      ]
     );
 
     let computed_address = AztecAddress::from_field(
       poseidon2_hash([
           partial_address.to_field(),
           public_keys_hash.to_field(),
           GENERATOR_INDEX__CONTRACT_ADDRESS_V1 as Field,
-        ],
-        3
+        ]
       )
     );
 

noir-projects/noir-protocol-circuits/crates/reset-kernel-lib/src/private_validation_request_processor.nr

@@ -1,4 +1,3 @@
-use dep::std::hash::poseidon2::Poseidon2::hash as poseidon2_hash;
 use crate::{nullifier_read_request_reset::NullifierReadRequestHints, reset::read_request::reset_read_requests};
 use dep::types::{
     abis::{side_effect::{SideEffect, SideEffectLinkedToNoteHash}, validation_requests::ValidationRequests},
@@ -7,7 +6,7 @@ use dep::types::{
     MAX_NULLIFIER_KEY_VALIDATION_REQUESTS_PER_TX, GENERATOR_INDEX__NSK_M
 },
     grumpkin_private_key::GrumpkinPrivateKey, keys::compute_siloed_nullifier_secret_key,
-    traits::is_empty
+    hash::poseidon2_hash, traits::is_empty
 };
 
 struct PrivateValidationRequestProcessor {
@@ -70,10 +69,12 @@ impl PrivateValidationRequestProcessor {
                 );
 
                 // Then we check that siloing the master secret key with the contract address gives the app nullifier secret key
-                let app_nullifier_secret_key_preimage = [
+
+                let app_nullifier_secret_key = poseidon2_hash(
+                    [
                     master_nullifier_secret_key.high, master_nullifier_secret_key.low, request.contract_address.to_field(), GENERATOR_INDEX__NSK_M
-                ];
-                let app_nullifier_secret_key = poseidon2_hash(app_nullifier_secret_key_preimage, app_nullifier_secret_key_preimage.len());
+                ]
+                );
                 assert(
                     app_nullifier_secret_key.eq(request.app_nullifier_secret_key), "Failed to derive matching app nullifier secret key from the secret key."
                 );

noir-projects/noir-protocol-circuits/crates/types/src/address/aztec_address.nr

@@ -1,10 +1,9 @@
 use crate::{
     crate::address::{eth_address::EthAddress, partial_address::PartialAddress, public_keys_hash::PublicKeysHash},
     constants::{AZTEC_ADDRESS_LENGTH, GENERATOR_INDEX__CONTRACT_ADDRESS_V1},
-    contract_class_id::ContractClassId, hash::pedersen_hash, grumpkin_point::GrumpkinPoint,
+    contract_class_id::ContractClassId, hash::poseidon2_hash, grumpkin_point::GrumpkinPoint,
     traits::{Empty, FromField, ToField, Serialize, Deserialize}, utils
 };
-use dep::std::hash::poseidon2::Poseidon2::hash as poseidon2_hash;
 
 // Aztec address
 struct AztecAddress {
@@ -57,7 +56,7 @@ impl AztecAddress {
     pub fn compute(pub_keys_hash: PublicKeysHash, partial_address: PartialAddress) -> AztecAddress {
         AztecAddress::from_field(
             poseidon2_hash(
-                [pub_keys_hash.to_field(), partial_address.to_field(), GENERATOR_INDEX__CONTRACT_ADDRESS_V1], 3
+                [pub_keys_hash.to_field(), partial_address.to_field(), GENERATOR_INDEX__CONTRACT_ADDRESS_V1]
             )
         )
     }

noir-projects/noir-protocol-circuits/crates/types/src/hash.nr

@@ -171,6 +171,10 @@ pub fn pedersen_hash<N>(inputs: [Field; N], hash_index: u32) -> Field {
     dep::std::hash::pedersen_hash_with_separator(inputs, hash_index)
 }
 
+pub fn poseidon2_hash<N>(inputs: [Field; N]) -> Field {
+    dep::std::hash::poseidon2::Poseidon2::hash(inputs, N)
+}
+
 #[test]
 fn smoke_sha256_to_field() {
     let full_buffer = [