Module cache_timing 

Cache-timing attack mitigations.

This module provides utilities to mitigate cache-timing side-channel attacks in cryptographic implementations.

Features

• Constant-time table lookups: Table lookups that don’t leak information via cache
• Cache-oblivious algorithms: Data access patterns independent of cache parameters
• Prefetching strategies: Reduce timing variation by prefetching data
• Constant-time selection: Select values without branching or variable memory access

Example

use chie_crypto::cache_timing::ConstantTimeLookup;

// Create a lookup table
let table = [0u8, 1, 2, 3, 4, 5, 6, 7];
let lookup = ConstantTimeLookup::new(&table);

// Constant-time lookup (doesn't leak index via cache)
let value = lookup.get(3);
assert_eq!(value, 3);

Structs

ByteLookup

Constant-time byte array lookup

CacheAligned

Cache-line aligned buffer

ConstantTimeLookup

Constant-time table lookup

Enums

CacheTimingError

Cache-timing mitigation errors

Functions

conditional_swap

Constant-time conditional swap

constant_time_clamp_index

Constant-time array index clamping

constant_time_memcmp

Constant-time memory comparison

prefetch_array^⚠

Prefetch multiple memory locations

prefetch_read^⚠

Prefetch memory locations to reduce timing variation

Type Aliases

CacheTimingResult

Result type for cache-timing operations