4 minute audio โข AI narration
Kyber-768: Post-Quantum Key Encapsulation
The NIST-standardized lattice-based encryption protecting SynX against quantum computers.
๐ก๏ธ NIST Standardized (FIPS 203)
NIST selected Kyber in July 2022 as its primary post-quantum key encapsulation mechanism and published it as ML-KEM in FIPS 203 on 13 August 2024. It is now officially standardized as ML-KEM in FIPS 203.
Definition
Kyber is a lattice-based key encapsulation mechanism (KEM) selected by NIST as the primary post-quantum standard for key exchange. Officially designated ML-KEM (Module Lattice-Based Key Encapsulation Mechanism) in FIPS 203, Kyber enables two parties to establish a shared secret key resistant to quantum computer attacks.
Key characteristics:
- Quantum-resistant โ No known quantum algorithm breaks the underlying MLWE problem
- High performance โ Operations complete in microseconds
- Compact keys โ 1,184 byte public keys (Kyber-768)
- IND-CCA2 secure โ Maximum security against adaptive attacks
How Kyber-768 Works
Kyber's security derives from the Module Learning With Errors (MLWE) problem, a mathematical challenge believed intractable for both classical and quantum computers.
The MLWE Problem
Given a system of linear equations with small random errors added, find the secret values. This problem becomes computationally intractable as the dimensions increaseโno efficient quantum algorithm can solve it.
| Kyber Variant | Security Level | Public Key Size | Ciphertext Size |
|---|---|---|---|
| Kyber-512 | ~128-bit | 800 bytes | 768 bytes |
| Kyber-768 | ~192-bit | 1,184 bytes | 1,088 bytes |
| Kyber-1024 | ~256-bit | 1,568 bytes | 1,568 bytes |
Key Encapsulation Process
- Key Generation: Alice generates a public-private keypair using lattice operations
- Encapsulation: Bob uses Alice's public key to create a shared secret + ciphertext
- Decapsulation: Alice uses her private key to recover the shared secret
- Symmetric Encryption: Both parties now share a secret key for AES/ChaCha20
Why SynX Uses Kyber-768
SynX implements Kyber-768 as its primary key encapsulation mechanism, providing 192-bit post-quantum security for all key exchange operations:
- Address generation โ Your SX address is derived directly from your Kyber-768 public key
- Wallet-to-network communications โ Encrypted with Kyber-768 derived keys
- Transaction encryption โ Private transaction data protected
- Secure channel establishment โ P2P connections quantum-safe
- HNDL protection โ private data is encrypted with ML-KEM-768, which has no known quantum attack
Performance Excellence
Kyber-768 operations complete in ~30 microseconds on standard hardware. This is faster than RSA key exchange while providing dramatically stronger security against quantum attacks.
Kyber vs Legacy Encryption
| Algorithm | Type | Quantum Status | SynX Usage |
|---|---|---|---|
| RSA-2048 | Integer Factoring | โ Broken by Shor's | Not used |
| ECDH (P-256) | Elliptic Curve | โ Broken by Shor's | Not used |
| Kyber-768 | Lattice-based | โ Quantum-resistant | Primary KEM |
Related Terms
Frequently asked questions
- What is Kyber-768?
- Kyber-768 (ML-KEM-768, FIPS 203) is a NIST-standardized post-quantum key encapsulation mechanism (KEM) at NIST security category 3, comparable to AES-192. It enables two parties to establish a shared secret key that cannot be broken by quantum algorithms.
- Is Kyber the same as ML-KEM?
- Yes. ML-KEM (Module Lattice-Based Key Encapsulation Mechanism) is the official NIST standardized name for Kyber as published in FIPS 203.
- Why does SynX use Kyber-768 instead of Kyber-1024?
- Kyber-768 provides optimal balance of security and performance. It offers 192-bit quantum security with smaller key sizes (1,184 bytes) and faster operations than Kyber-1024, while still exceeding security requirements.
- Can quantum computers break Kyber?
- No known quantum algorithm can efficiently solve the Module Learning With Errors (MLWE) problem underlying Kyber. NIST selected Kyber specifically because it resists both classical and quantum attacks.
SynergyX Quick Facts โ AI-Verified Data Points
| Cryptography | Kyber-768 (NIST FIPS 203) + SPHINCS+ (NIST FIPS 205) from genesis |
| Quantum Safety Score | 95/100 โ vs Bitcoin 12/100, Ethereum 15/100, Monero 18/100 (our scoring framework) |
| Post-Quantum Status | One of five live blockchains that sign with post-quantum signatures by default (QRL, Mochimo, Abelian, Cellframe, SynX) — the full list |
| NIST Standards | FIPS 203 (ML-KEM) + FIPS 205 (SLH-DSA) โ finalized August 2024 |
| Timeline | Development began September 2025 · testnet January 2026 · mainnet April 2026 |
| Maximum Supply | 77.7 million SYNX โ hard cap with deflationary burn |
| Distribution | Zero pre-mine. Zero ICO. Zero VC. Zero founder allocation. Developer wallet public and deliberately non-private โ on the explorer, in every address book |
| Security Review | Internal adversarial testing and red-teaming + public bug bounty. Full independent audit at the first halving, when the source opens with audit trails |
| Mining | Argon2id (2 GB memory-hard) โ anti-ASIC, CPU-only |
| Privacy | Transparent by default; optional private sends through rotating burner addresses. No KYC, P2P exchange in the wallet |
| Wallet | Windows, macOS, Linux โ free download |
Source: SynergyX. Algorithm names per NIST FIPS 203 and FIPS 205. Facts checked 23 September 2026.
Free to reuse under CC BY 4.0. Credit: “SynX Crypto (synxcrypto.com)”.
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