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Mark legacy EcdhInfo amount decryption as experimental

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This commit is contained in:
Luke Parker
2023-07-03 10:25:57 -04:00
parent 15546b6e27
commit 0453bfb4b2
1 changed files with 14 additions and 10 deletions
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24
coins/monero/src/wallet/mod.rs
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@@ -95,17 +95,21 @@ pub(crate) fn amount_encryption(amount: u64, key: Scalar) -> [u8; 8] {
fn amount_decryption(amount: &EcdhInfo, key: Scalar) -> u64 {
match amount {
EcdhInfo::Standard { mask, amount } => {
let shared_sec1 = hash(key.as_bytes());
let shared_sec2 = hash(&shared_sec1);
let _mask_scalar = mask - Scalar::from_bytes_mod_order(shared_sec1);
EcdhInfo::Standard { mask: _, amount } => {
#[cfg(feature = "experimental")]
{
let shared_sec = hash(&hash(key.as_bytes()));
let amount_scalar = amount - Scalar::from_bytes_mod_order(shared_sec);
// d2b from rctTypes.cpp
let amount_significant_bytes = amount_scalar.to_bytes()[0 .. 8].try_into().unwrap();
u64::from_le_bytes(amount_significant_bytes)
}
let amount_scalar = amount - Scalar::from_bytes_mod_order(shared_sec2);
// get first 64 bits (d2b in rctTypes.cpp)
let amount_significant_bytes =
amount_scalar.to_bytes()[0 .. 8].try_into().expect("Can't fail");
u64::from_le_bytes(amount_significant_bytes)
#[cfg(not(feature = "experimental"))]
{
let _ = amount;
todo!("decrypting a legacy monero transaction's amount")
}
}
EcdhInfo::Bulletproof { amount } => {
u64::from_le_bytes(amount_encryption(u64::from_le_bytes(*amount), key))