blockworks-foundation
/
solana
mirror of https://github.com/blockworks-foundation/solana.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

zk-token-sdk: fixing a range proof edge case (#23605) 

* zk-token-sdk: fixing a range proof edge case

* zk-token-sdk: clippy
This commit is contained in:
samkim-crypto 2022-03-11 13:57:56 -08:00 committed by GitHub
parent 3cf31fa9b8
commit 4e02ec342c
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 21 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
zk-token-sdk/src/instruction/transfer.rs
View File

@ -35,8 +35,8 @@ const TRANSFER_AMOUNT_HI_BIT_LENGTH: usize = 32;
#[cfg(not(target_arch = "bpf"))]
lazy_static::lazy_static! {
pub static ref COMMITMENT_MAX: PedersenCommitment = Pedersen::encode(1_u64 <<
TRANSFER_AMOUNT_LO_NEGATED_BIT_LENGTH);
pub static ref COMMITMENT_MAX: PedersenCommitment = Pedersen::encode((1_u64 <<
TRANSFER_AMOUNT_LO_NEGATED_BIT_LENGTH) - 1);
}
#[derive(Clone)]
@ -353,7 +353,7 @@ impl TransferProof {
)
} else {
let transfer_amount_lo_negated =
(1 << TRANSFER_AMOUNT_LO_NEGATED_BIT_LENGTH) - transfer_amount_lo as u64;
(1 << TRANSFER_AMOUNT_LO_NEGATED_BIT_LENGTH) - 1 - transfer_amount_lo as u64;
let opening_lo_negated = &PedersenOpening::default() - opening_lo;
RangeProof::new(
@ -513,6 +513,24 @@ mod test {
let dest_pk = ElGamalKeypair::new_rand().public;
let auditor_pk = ElGamalKeypair::new_rand().public;
// create source account spendable ciphertext
let spendable_balance: u64 = 0;
let spendable_ciphertext = source_keypair.public.encrypt(spendable_balance);
// transfer amount
let transfer_amount: u64 = 0;
// create transfer data
let transfer_data = TransferData::new(
transfer_amount,
(spendable_balance, &spendable_ciphertext),
&source_keypair,
(&dest_pk, &auditor_pk),
)
.unwrap();
assert!(transfer_data.verify().is_ok());
// create source account spendable ciphertext
let spendable_balance: u64 = 77;
let spendable_ciphertext = source_keypair.public.encrypt(spendable_balance);