ML-DSA-87 Security API

Version: 1.0.0
Last Updated: 2025-01-02
Security Classification: Maximum Security Digital Signature
Author: MetaMUI Security Team

Overview

ML-DSA-87 (formerly Dilithium5) provides NIST security level 5, the highest security level for post-quantum digital signatures.

• Algorithm Family: Lattice-based signature
• NIST Security Level: Level 5 (≥256-bit classical security)
• Key Sizes:
  • Public Key: 2592 bytes
  • Secret Key: 4864 bytes
  • Signature: 4595 bytes
• Standard: FIPS 204

Security Warnings ⚠️

1. Maximum Security: For highest-value signatures
2. Large Signatures: 4595 bytes per signature
3. Performance Impact: Slower than ML-DSA-44/65
4. Long-term Security: Suitable for 30+ year security requirements

API Functions

Similar to ML-DSA-44 with maximum security parameters.

Security Analysis

Threat Model: ML-DSA-87 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. FIPS 204: Module-Lattice-Based Digital Signature Standard

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