NTRU+ Security API

Version: 1.0.0
Last Updated: 2025-01-02
Security Classification: Korean NTRU Variant
Author: MetaMUI Security Team

Overview

NTRU+ is a Korean variant of NTRU offering improved efficiency and security with multiple parameter sets.

• Algorithm Family: NTRU-based KEM
• Parameter Sets:
  • NTRU+768: NIST level 1
  • NTRU+864: NIST level 3
  • NTRU+1152: NIST level 5 (ntruplus.org 2026 revision; the 2025 revision’s 576 set was dropped upstream)
• Origin: Korean Post-Quantum Cryptography Competition

Security Warnings ⚠️

1. NTRU Variant: Based on NTRU lattice problems
2. Korean Optimizations: Tailored for Korean requirements
3. Multiple Parameters: Choose based on security needs
4. Efficient Implementation: Fast key generation and encapsulation

API Functions

Similar to NTRU Prime with Korean-specific enhancements.

Security Analysis

Threat Model: NTRU+ Threat Model

The comprehensive threat analysis covers:

• Algorithm-specific attack vectors
• Implementation vulnerabilities
• Side-channel considerations
• Quantum resistance analysis (where applicable)
• Deployment recommendations

For complete security analysis and risk assessment, see the dedicated threat model documentation.

References

1. NTRU+ Specification
2. Korean PQC Standardization

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