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// nofuture.go - Post-Quantum Cryptography Core System
// Build: CGO_ENABLED=1 go build -tags="oqs,purego,harden" -trimpath -ldflags="-s -w"
package main
import (
"crypto/rand"
"encoding/binary"
"fmt"
"io"
"os"
"runtime"
"syscall"
"unsafe"
"github.com/awnumar/memguard"
"github.com/open-quantum-safe/liboqs-go/oqs"
"golang.org/x/crypto/argon2"
"golang.org/x/crypto/blake2b"
"golang.org/x/sys/unix"
)
const (
KEM_ALG = "Kyber1024-90s"
SIG_ALG = "Dilithium5-AES"
HASH_ALG = "BLAKE2b-512"
SALT_SIZE = 64
ARGON2_TIME = 4
ARGON2_MEMORY = 256 * 1024
ARGON2_THREADS = 4
ENCLAVE_KEY_LEN = 48
)
var (
secureEntropy = memguard.NewEnclaveRandom
guard = memguard.NewEnclave
)
type QuantumSession struct {
sessionKey *memguard.Enclave
remotePubKey *memguard.Enclave
nonce [24]byte
handshake bool
}
func init() {
// Hardening runtime
unix.Mlockall(unix.MCL_CURRENT | unix.MCL_FUTURE)
runtime.GOMAXPROCS(1)
memguard.CatchInterrupt()
memguard.Purge()
}
func deriveEnclaveKey(passphrase *memguard.Enclave, salt []byte) (*memguard.LockedBuffer, error) {
passBuf, err := passphrase.Open()
if err != nil {
return nil, err
}
defer passBuf.Destroy()
key := argon2.IDKey(passBuf.Bytes(), salt, ARGON2_TIME, ARGON2_MEMORY, ARGON2_THREADS, ENCLAVE_KEY_LEN)
lockedKey, err := memguard.NewImmutableFromBytes(key)
if err != nil {
return nil, err
}
return lockedKey, nil
}
func quantumKEMKeyPair() (*memguard.LockedBuffer, *memguard.LockedBuffer, error) {
kem := oqs.KeyEncapsulation{}
if err := kem.Init(KEM_ALG, nil); err != nil {
return nil, nil, err
}
defer kem.Free()
pubKey, err := kem.GenerateKeyPair()
if err != nil {
return nil, nil, err
}
secKey := kem.ExportSecretKey()
lockedPub, err := memguard.NewImmutableFromBytes(pubKey)
if err != nil {
return nil, nil, err
}
lockedSec, err := memguard.NewImmutableFromBytes(secKey)
if err != nil {
lockedPub.Destroy()
return nil, nil, err
}
return lockedPub, lockedSec, nil
}
func quantumEncapsulate(pubKey *memguard.LockedBuffer) (*memguard.LockedBuffer, *memguard.LockedBuffer, error) {
kem := oqs.KeyEncapsulation{}
defer kem.Free()
pubBytes := pubKey.Bytes()
if err := kem.Init(KEM_ALG, pubBytes); err != nil {
return nil, nil, err
}
ct, ss, err := kem.EncapSecretKey(rand.Reader)
if err != nil {
return nil, nil, err
}
lockedCt, err := memguard.NewImmutableFromBytes(ct)
if err != nil {
return nil, nil, err
}
lockedSs, err := memguard.NewImmutableFromBytes(ss)
if err != nil {
lockedCt.Destroy()
return nil, nil, err
}
return lockedCt, lockedSs, nil
}
func quantumDecapsulate(ct *memguard.LockedBuffer, secKey *memguard.LockedBuffer) (*memguard.LockedBuffer, error) {
kem := oqs.KeyEncapsulation{}
defer kem.Free()
if err := kem.Init(KEM_ALG, nil); err != nil {
return nil, err
}
if err := kem.ImportSecretKey(secKey.Bytes()); err != nil {
return nil, err
}
ss, err := kem.DecapSecretKey(ct.Bytes())
if err != nil {
return nil, err
}
lockedSs, err := memguard.NewImmutableFromBytes(ss)
if err != nil {
return nil, err
}
return lockedSs, nil
}
func quantumSign(msg []byte, secKey *memguard.LockedBuffer) (*memguard.LockedBuffer, error) {
sig := oqs.Signature{}
defer sig.Free()
if err := sig.Init(SIG_ALG, nil); err != nil {
return nil, err
}
signature, err := sig.Sign(msg, secKey.Bytes())
if err != nil {
return nil, err
}
lockedSig, err := memguard.NewImmutableFromBytes(signature)
if err != nil {
return nil, err
}
return lockedSig, nil
}
func quantumVerify(msg []byte, sig *memguard.LockedBuffer, pubKey *memguard.LockedBuffer) (bool, error) {
verifier := oqs.Signature{}
defer verifier.Free()
if err := verifier.Init(SIG_ALG, pubKey.Bytes()); err != nil {
return false, err
}
isValid, err := verifier.Verify(msg, sig.Bytes(), pubKey.Bytes())
return isValid, err
}
func secureTransmission(session *QuantumSession, data []byte) ([]byte, error) {
nonce := make([]byte, 24)
if _, err := rand.Read(nonce); err != nil {
return nil, err
}
ss, err := session.sessionKey.Open()
if err != nil {
return nil, err
}
defer ss.Destroy()
hash, err := blake2b.New512(nil)
if err != nil {
return nil, err
}
hash.Write(ss.Bytes())
hash.Write(nonce)
hmacKey := hash.Sum(nil)
sealedData, err := memguard.NewImmutableFromBytes(data)
if err != nil {
return nil, err
}
defer sealedData.Destroy()
ciphertext := make([]byte, len(data)+blake2b.Size256)
binary.LittleEndian.PutUint64(ciphertext[:8], uint64(len(data)))
// XChaCha20-Poly1305 implementation here (omitted for brevity)
// ...
return ciphertext, nil
}
func main() {
// Esempio di utilizzo completo
passphrase, err := memguard.NewImmutableRandom(32)
if err != nil {
fmt.Fprintln(os.Stderr, "Critical entropy failure:", err)
os.Exit(1)
}
defer passphrase.Destroy()
salt := make([]byte, SALT_SIZE)
if _, err := rand.Read(salt); err != nil {
fmt.Fprintln(os.Stderr, "Entropy failure:", err)
os.Exit(1)
}
// Deriva la chiave dell'enclave
enclaveKey, err := deriveEnclaveKey(guard(passphrase.Bytes()), salt)
if err != nil {
fmt.Fprintln(os.Stderr, "Key derivation failed:", err)
os.Exit(1)
}
defer enclaveKey.Destroy()
// Genera chiavi PQ
pubKey, secKey, err := quantumKEMKeyPair()
if err != nil {
fmt.Fprintln(os.Stderr, "PQ Keygen failed:", err)
os.Exit(1)
}
defer pubKey.Destroy()
defer secKey.Destroy()
// Simula trasmissione sicura
ct, ss, err := quantumEncapsulate(pubKey)
if err != nil {
fmt.Fprintln(os.Stderr, "Encapsulation failed:", err)
os.Exit(1)
}
defer ct.Destroy()
defer ss.Destroy()
// Decapsula il segreto
decryptedSs, err := quantumDecapsulate(ct, secKey)
if err != nil {
fmt.Fprintln(os.Stderr, "Decapsulation failed:", err)
os.Exit(1)
}
defer decryptedSs.Destroy()
fmt.Println("Post-Quantum Secure Channel Established")
}
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