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Remove potentially-failing unchecked arithmetic operations for ones which error

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In response to 9.13.3.

Requires a bump to Rust 1.82 to take advantage of `Option::is_none_or`.
This commit is contained in:
Luke Parker
2025-08-08 22:30:34 -04:00
parent cbab9486c6
commit 188fcc3cb4
13 changed files with 65 additions and 18 deletions
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9
networks/monero/primitives/src/lib.rs
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@@ -166,7 +166,14 @@ impl Decoys {
/// `offsets` are the positions of each ring member within the Monero blockchain, offset from the
/// prior member's position (with the initial ring member offset from 0).
pub fn new(offsets: Vec<u64>, signer_index: u8, ring: Vec<[EdwardsPoint; 2]>) -> Option<Self> {
if (offsets.len() != ring.len()) || (usize::from(signer_index) >= ring.len()) {
if (offsets.len() > usize::from(u8::MAX)) ||
(offsets.len() != ring.len()) ||
(usize::from(signer_index) >= ring.len())
{
None?;
}
// Check these offsets form representable positions
if offsets.iter().copied().try_fold(0, u64::checked_add).is_none() {
None?;
}
Some(Decoys { offsets, signer_index, ring })