Blue Team
December 2, 202422 min read
Quantum Computing Threats & Post-Quantum Cryptography Migration Guide
Prepare for the quantum threat with this guide covering harvest now decrypt later attacks, NIST post-quantum standards, and cryptographic migration strategies.
A
Asfaleia Team
Security Consultant
10-15
Years to Q-Day
4
NIST PQC Standards
2030
Migration Target
100%
RSA/ECC Broken
The Quantum Threat
Quantum computers will break RSA, ECC, and all current public-key cryptography. The "harvest now, decrypt later" threat means attackers are collecting encrypted data today.
Harvest Now, Decrypt Later
State actors are collecting encrypted data now to decrypt once quantum computers are available. Long-lived secrets are at immediate risk.
Cryptographic Impact
Broken by Quantum
RSA (all key sizes)
ECC (Elliptic Curve)
Diffie-Hellman
DSA/ECDSA
Current TLS
Still Secure
AES-256
SHA-3
Symmetric algorithms
NIST PQC standards
Hybrid approaches
NIST PQC Standards
Key Encapsulation
- ML-KEM (Kyber)
- Lattice-based
- Fast performance
- Primary standard
Digital Signatures
- ML-DSA (Dilithium)
- SLH-DSA (SPHINCS+)
- FN-DSA (FALCON)
- Hash-based backup
Migration Checklist
Immediate Actions
Cryptographic inventory
Risk assessment
Skill development
Vendor engagement
Migration Steps
Hybrid implementation
PKI transition planning
HSM upgrades
Application updates
Start Now
Begin with cryptographic inventory and risk assessment. The 5-10 year migration timeline starts today.
#Quantum Computing#Post-Quantum Cryptography#NIST#Encryption#Cryptography#PKI
Prepare for Quantum Threats
Start your post-quantum cryptography migration with our assessment and roadmap services.
Get Crypto Assessment