SNTRUP761
SNTRUP761 is a structured lattice-based key encapsulation mechanism (KEM) that offers an alternative approach to quantum-resistant cryptography.
Security Level
SNTRUP761 provides:
- NIST Level 3 security
- Based on NTRU Prime
- Different mathematical foundation from Kyber/MLKEM
- Strong security against structured lattice attacks
Master Phrase Security
Your master encryption phrase is critical for data access. If lost, your encrypted files cannot be recovered. We strongly recommend using ByteHide Secrets for secure phrase management.
See our Zero-Knowledge Encryption guide for detailed information.
Implementation
// Initialize with secure key management
var secrets = new SecretsManager("<secrets_token>");
string masterPhrase = await secrets.Get("storage_master_phrase");
var storage = new StorageManager(
"<token>",
masterPhrase,
quantumAlgorithm: QuantumAlgorithmType.SNTRUP761
);
// Use in operations
await storage
.EncryptWithQuantum()
.Set("secure-data.dat", sensitiveData);
Performance Characteristics
- Key Generation: ~1.5ms
- Encapsulation: ~120μs
- Decapsulation: ~110μs
- Public Key Size: 1158 bytes
- Secret Key Size: 1763 bytes
- Ciphertext Size: 1039 bytes
Use Cases
Ideal for:
- Diversifying cryptographic portfolio
- Systems requiring alternative to LWE-based cryptography
- Enterprise applications
- Long-term data storage
Algorithm Diversity
SNTRUP761 provides cryptographic diversity by using NTRU Prime, which offers protection against potential vulnerabilities in other lattice-based approaches.
Best Practices
Key Management
- Use ByteHide Secrets for master phrase storage
- Never hardcode the phrase in your code
- Implement proper key rotation procedures
- Keep secure backups of your master phrase
Implementation
- Enable quantum protection for sensitive data
- Regular security audits
- Monitor performance metrics
- Document security requirements
Security Architecture
- Consider as part of a diverse crypto strategy
- Regular security assessments
- Compliance documentation
- Incident response planning
Comparison with Other Algorithms
| Aspect | SNTRUP761 | Kyber768 | MLKEM768 |
|---|---|---|---|
| Security Level | NIST Level 3 | NIST Level 3 | NIST Level 3 |
| Mathematical Base | NTRU Prime | Module-LWE | Module-LWE |
| Key Generation | Slower | Faster | Faster |
| Encapsulation | Comparable | Comparable | Comparable |
| Security Foundation | Different | Similar | Similar |
Key Generation Performance
While SNTRUP761 has slightly slower key generation compared to Kyber and MLKEM, it provides valuable cryptographic diversity and strong security properties.
Unique Features
Mathematical Foundation
- Based on NTRU Prime
- Different security assumptions from LWE
- Protection against structured lattice attacks
- Conservative parameter selection
Security Properties
- Strong chosen-ciphertext security
- Protection against key-reuse attacks
- Resistance to side-channel attacks
- Conservative design approach