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udp: ConnectionValidator: rename connection_id_eq_constant_time

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Joakim Frostegård 2022-04-15 22:30:38 +02:00
parent 19c604d4f1
commit 22fa226f95
1 changed files with 4 additions and 4 deletions
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8
aquatic_udp/src/common.rs
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@ -65,7 +65,7 @@ impl ConnectionValidator {
let valid_until = connection_id.0.to_ne_bytes()[..4].try_into().unwrap(); let valid_until = connection_id.0.to_ne_bytes()[..4].try_into().unwrap();
// Check that recreating ConnectionId with same inputs yields identical hash. // Check that recreating ConnectionId with same inputs yields identical hash.
if !Self::connection_id_eq_constant_time( if !Self::connection_id_eq(
connection_id, connection_id,
self.create_connection_id_inner(valid_until, source_addr), self.create_connection_id_inner(valid_until, source_addr),
) { ) {
@ -99,12 +99,12 @@ impl ConnectionValidator {
ConnectionId(i64::from_ne_bytes(connection_id_bytes)) ConnectionId(i64::from_ne_bytes(connection_id_bytes))
} }
/// Compare ConnectionIDs in constant time /// Compare ConnectionIDs without breaking constant time requirements
/// ///
/// Use this instead of PartialEq::eq to avoid optimizations breaking constant /// Use this instead of PartialEq::eq to avoid optimizations breaking constant
/// time HMAC comparison. /// time HMAC comparison.
#[cfg(target_arch = "x86_64")] #[cfg(target_arch = "x86_64")]
fn connection_id_eq_constant_time(a: ConnectionId, b: ConnectionId) -> bool { fn connection_id_eq(a: ConnectionId, b: ConnectionId) -> bool {
let mut eq = 0u8; let mut eq = 0u8;
unsafe { unsafe {
@ -397,6 +397,6 @@ mod tests {
let a = ConnectionId(a); let a = ConnectionId(a);
let b = ConnectionId(b); let b = ConnectionId(b);
ConnectionValidator::connection_id_eq_constant_time(a, b) == (a == b) ConnectionValidator::connection_id_eq(a, b) == (a == b)
} }
} }