fix(devnet): devnet predeployed contracts stable address across syste…

…ms (re) (#346)

Co-authored-by: antiyro <[email protected]>

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Next release
 
+- fix(devnet): devnet predeployed contracts stable address across systems (re)
 - chore: Fixed README table format
 - fix(cli): fixed devnet cli arguments
 - fix(db): max rocksdb LOG files count and size and add more memory metrics

crates/client/devnet/Cargo.toml

@@ -51,6 +51,5 @@ starknet_api.workspace = true
 # Other
 anyhow.workspace = true
 log.workspace = true
-rand = { workspace = true, features = ["small_rng"] }
 serde_json.workspace = true
 tokio.workspace = true

crates/client/devnet/src/lib.rs

@@ -7,7 +7,10 @@ use mp_convert::ToFelt;
 use mp_state_update::{ContractStorageDiffItem, StateDiff, StorageEntry};
 use starknet_api::{core::ContractAddress, state::StorageKey};
 use starknet_signers::SigningKey;
-use starknet_types_core::felt::Felt;
+use starknet_types_core::{
+    felt::Felt,
+    hash::{Poseidon, StarkHash},
+};
 use std::{collections::HashMap, time::SystemTime};
 
 mod balances;
@@ -99,20 +102,17 @@ impl ChainGenesisDescription {
             get_storage_var_address("Account_public_key", &[])
         }
 
-        pub fn from_seed(seed: u64) -> Felt {
-            use rand::{RngCore, SeedableRng};
-            // Use a fixed seed for deterministic RNG. Do not use StdRng but SmallRng so that it's stable across systems.
-            let mut rng = rand::rngs::SmallRng::seed_from_u64(seed);
-            let mut buffer = [0u8; 32];
-            rng.fill_bytes(&mut buffer);
+        // We may want to make this seed a cli argument in the future.
+        let seed = Felt::from_hex_unchecked("0x1278b36872363a1276387");
 
-            Felt::from_bytes_be_slice(&buffer)
+        fn rand_from_i(seed: Felt, i: u64) -> Felt {
+            Poseidon::hash(&seed, &(31 ^ !i).into())
         }
 
         Ok(DevnetKeys(
             (0..n_addr)
                 .map(|addr_idx| {
-                    let secret_scalar = from_seed(addr_idx);
+                    let secret_scalar = rand_from_i(seed, addr_idx);
                     let key = SigningKey::from_secret_scalar(secret_scalar);
                     let pubkey = key.verifying_key();
 

tests/js_tests/constant.ts

@@ -1,5 +1,5 @@
 export const RPC_URL = "http://127.0.0.1:9944";
 export const SIGNER_PUBLIC =
-  "0x67e6d6a380e8b79aeb9d5164643174b3a9e4f381e5f28929441e17b81056f91";
+  "0x021ae26856dbb24032cac6bba14a776741331dc031f0dc43efb5f333e6a64da2";
 export const SIGNER_PRIVATE =
-  "0x4189668c9e4825137bf31e02d7f6b70120e0d18a16ed9fa73632e8066975065";
+  "0x077e56c6dc32d40a67f6f7e6625c8dc5e570abe49c0a24e9202e4ae906abcc07";