remove decryptable ciphertext from mint burn proof generation

Author: samkim-crypto

token/confidential-transfer/proof-generation/src/mint.rs

@@ -5,7 +5,6 @@ use {
     },
     solana_zk_sdk::{
         encryption::{
-            auth_encryption::{AeCiphertext, AeKey},
             elgamal::{ElGamalCiphertext, ElGamalKeypair, ElGamalPubkey},
             pedersen::Pedersen,
         },
@@ -28,15 +27,13 @@ pub struct MintProofData {
     pub ciphertext_validity_proof_data_with_ciphertext:
         CiphertextValidityProofWithAuditorCiphertext,
     pub range_proof_data: BatchedRangeProofU128Data,
-    pub new_decryptable_supply: AeCiphertext,
 }
 
 pub fn mint_split_proof_data(
     current_supply_ciphertext: &ElGamalCiphertext,
     mint_amount: u64,
     current_supply: u64,
     supply_elgamal_keypair: &ElGamalKeypair,
-    supply_aes_key: &AeKey,
     destination_elgamal_pubkey: &ElGamalPubkey,
     auditor_elgamal_pubkey: Option<&ElGamalPubkey>,
 ) -> Result<MintProofData, TokenProofGenerationError> {
@@ -161,6 +158,5 @@ pub fn mint_split_proof_data(
         equality_proof_data,
         ciphertext_validity_proof_data_with_ciphertext,
         range_proof_data,
-        new_decryptable_supply: supply_aes_key.encrypt(new_supply),
     })
 }

token/confidential-transfer/proof-tests/tests/proof_test.rs

@@ -222,21 +222,18 @@ fn test_mint_validity(mint_amount: u64, supply: u64) {
     let auditor_pubkey = auditor_keypair.pubkey();
 
     let supply_keypair = ElGamalKeypair::new_rand();
-    let supply_aes_key = AeKey::new_rand();
 
     let supply_ciphertext = supply_keypair.pubkey().encrypt(supply);
 
     let MintProofData {
         equality_proof_data,
         ciphertext_validity_proof_data_with_ciphertext,
         range_proof_data,
-        new_decryptable_supply: _,
     } = mint_split_proof_data(
         &supply_ciphertext,
         mint_amount,
         supply,
         &supply_keypair,
-        &supply_aes_key,
         destination_pubkey,
         Some(auditor_pubkey),
     )