Is It Quantum Safe?
Quick-reference guide to quantum safety for 23 cryptographic algorithms, protocols, and hash functions. Each entry includes NIST deprecation timelines, quantum vulnerability analysis, and migration guidance.
Key Takeaway: Of 23 cryptographic standards analyzed, 16 are NOT quantum safe and must be migrated before CRQC emergence. 7 are quantum resistant. NIST IR 8547 sets deprecation by 2030 and disallowance after 2035 for all Shor-vulnerable algorithms (RSA, ECDSA, ECDH, DH, DSA). Replace with ML-KEM (FIPS 203), ML-DSA (FIPS 204), or SLH-DSA (FIPS 205).
Post-Quantum Standards
NIST-standardized post-quantum cryptography (PQC) algorithms
Encryption
Symmetric and asymmetric encryption
RSA-2048
RSA with 2048-bit keys
No.
RSA-4096
RSA with 4096-bit keys
No.
RSA-1024
RSA with 1024-bit keys
No.
AES-256
Advanced Encryption Standard with 256-bit keys
Yes.
AES-128
Advanced Encryption Standard with 128-bit keys
Uncertain.
3DES
Triple Data Encryption Standard (3DES / TDEA)
No.
Key Exchange
Key agreement and encapsulation
Digital Signatures
Authentication and integrity
Hash Functions
Integrity and fingerprinting
Protocols
TLS, SSH, IPsec, X.509
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