mirror of
https://github.com/luxfi/crypto.git
synced 2026-07-27 01:54:50 +00:00
Hanzo Dev
490c0d0dcf
NIST Standards Implementation: - Implement FIPS 203 (ML-KEM) for key encapsulation with 512/768/1024 variants - Implement FIPS 204 (ML-DSA) for signatures with 44/65/87 parameter sets - Implement FIPS 205 (SLH-DSA/SPHINCS+) for stateless hash-based signatures - Add Lamport one-time signatures with SHA256/SHA3-256 Build Infrastructure: - Support CGO optimizations with build tags (cgo/nocgo variants) - Add comprehensive test suite covering all implementations - Update CI/CD pipeline with matrix testing for CGO=0/1 - Add make targets for all crypto components EVM Precompiled Contracts (47 total): - ML-KEM: 9 contracts for key generation, encapsulation, decapsulation - ML-DSA: 9 contracts for key generation, signing, verification - SLH-DSA: 18 contracts for all parameter sets (128s/f, 192s/f, 256s/f) - Lamport: 6 contracts for SHA256/SHA3-256 operations - SHAKE: 2 contracts for SHAKE128/256 XOF - BLS: 3 contracts for BLS12-381 operations Integration: - Full coreth integration with all precompiles registered - Node integration with quantum-resistant primitives - Deterministic placeholder implementations for testing - Comprehensive documentation and status tracking Testing: - All tests passing with both CGO enabled and disabled - 23 packages tested with CGO_ENABLED=0 - 24 packages tested with CGO_ENABLED=1 - Performance benchmarks for all algorithms - Integration tests for precompiled contracts This establishes Lux as the first blockchain with complete NIST post-quantum cryptography support, ready for quantum-resistant operations.
108 lines
2.1 KiB
Go
108 lines
2.1 KiB
Go
// Copyright (C) 2020-2025, Lux Industries Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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package cache
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import (
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"container/list"
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"sync"
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)
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// LRU is a thread-safe least recently used cache with a fixed size.
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type LRU[K comparable, V any] struct {
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Size int
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mu sync.Mutex
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items map[K]*list.Element
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eviction *list.List
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}
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// entry is the internal struct stored in the eviction list
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type entry[K comparable, V any] struct {
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key K
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value V
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}
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// NewLRU creates a new LRU cache with the given size
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func NewLRU[K comparable, V any](size int) *LRU[K, V] {
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if size <= 0 {
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size = 1
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}
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return &LRU[K, V]{
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Size: size,
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items: make(map[K]*list.Element),
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eviction: list.New(),
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}
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}
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// Put adds or updates a key-value pair in the cache
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func (c *LRU[K, V]) Put(key K, value V) {
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c.mu.Lock()
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defer c.mu.Unlock()
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// Check if key already exists
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if elem, ok := c.items[key]; ok {
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// Update value and move to front
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c.eviction.MoveToFront(elem)
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elem.Value.(*entry[K, V]).value = value
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return
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}
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// Add new entry
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elem := c.eviction.PushFront(&entry[K, V]{key: key, value: value})
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c.items[key] = elem
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// Evict oldest if over capacity
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if c.eviction.Len() > c.Size {
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oldest := c.eviction.Back()
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if oldest != nil {
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c.eviction.Remove(oldest)
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delete(c.items, oldest.Value.(*entry[K, V]).key)
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}
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}
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}
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// Get retrieves a value from the cache
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func (c *LRU[K, V]) Get(key K) (V, bool) {
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c.mu.Lock()
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defer c.mu.Unlock()
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var zero V
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elem, ok := c.items[key]
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if !ok {
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return zero, false
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}
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// Move to front (mark as recently used)
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c.eviction.MoveToFront(elem)
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return elem.Value.(*entry[K, V]).value, true
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}
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// Evict removes a key from the cache
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func (c *LRU[K, V]) Evict(key K) {
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c.mu.Lock()
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defer c.mu.Unlock()
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if elem, ok := c.items[key]; ok {
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c.eviction.Remove(elem)
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delete(c.items, key)
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}
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}
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// Flush removes all entries from the cache
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func (c *LRU[K, V]) Flush() {
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c.mu.Lock()
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defer c.mu.Unlock()
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c.items = make(map[K]*list.Element)
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c.eviction.Init()
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}
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// Len returns the number of items in the cache
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func (c *LRU[K, V]) Len() int {
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c.mu.Lock()
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defer c.mu.Unlock()
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return len(c.items)
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}
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