derive registry address in UpdateRegistry instruction constructor

Author: samkim-crypto

token/confidential-transfer/elgamal-registry/src/instruction.rs

@@ -128,13 +128,14 @@ pub fn create_registry(
 
 /// Create a `RegistryInstruction::UpdateRegistry` instruction
 pub fn update_registry(
-    registry_account: &Pubkey,
-    owner: &Pubkey,
+    owner_address: &Pubkey,
     proof_location: ProofLocation<PubkeyValidityProofData>,
 ) -> Result<Vec<Instruction>, ProgramError> {
-    let mut accounts = vec![AccountMeta::new(*registry_account, false)];
+    let elgamal_registry_address = get_elgamal_registry_address(owner_address, &id());
+
+    let mut accounts = vec![AccountMeta::new(elgamal_registry_address, false)];
     let proof_instruction_offset = proof_instruction_offset(&mut accounts, proof_location);
-    accounts.push(AccountMeta::new_readonly(*owner, true));
+    accounts.push(AccountMeta::new_readonly(*owner_address, true));
 
     let registry_instruction = Instruction {
         program_id: id(),

token/program-2022-test/tests/confidential_transfer.rs

@@ -2884,12 +2884,9 @@ async fn confidential_transfer_configure_token_account_with_registry() {
         &spl_elgamal_registry::id(),
     );
 
-    let instructions = spl_elgamal_registry::instruction::update_registry(
-        &elgamal_registry_address,
-        &alice.pubkey(),
-        proof_location,
-    )
-    .unwrap();
+    let instructions =
+        spl_elgamal_registry::instruction::update_registry(&alice.pubkey(), proof_location)
+            .unwrap();
     let tx = Transaction::new_signed_with_payer(
         &instructions,
         Some(&ctx.payer.pubkey()),