Key Strength Assessment
Evaluate cryptographic key strength based on NIST SP 800-57, marking recommended upgrade thresholds.
Algorithm & Key Length
Security Level
Acceptable
Legacy compatibility only
Equivalent Symmetric Strength
Equivalent Bits112 Key Length (bits)
Minimum Recommended128 bits
NIST LevelLevel 2
Recommended Retirement
Retire Year2030
Current StatusCompatible
Details
RSA 2048-bit key. RSA relies on the integer factorization problem; key length must be much larger than symmetric algorithms for equivalent strength. NIST recommends ≥3072 bits after 2030.
Warning
This key length will retire after 2030, upgrade recommended
Recommendations:
- Upgrade to RSA-3072 or RSA-4096
- Consider migrating to ECDSA P-256 or Ed25519 (shorter and more secure)
- Migrate to ≥128-bit equivalent strength algorithm ASAP
Instructions
!This tool evaluates key strength based on NIST SP 800-57. Equivalent symmetric strength represents the equivalent symmetric key brute-force workload required to attack this key.
- Below 112 bits: Not recommended, does not meet modern security requirements
- 112-127 bits: Legacy compatibility, retiring after 2030
- 128 bits: Minimum recommended, usable beyond 2030
- 192 bits: Medium recommendation, long-term security
- 256 bits: High recommendation, quantum safety margin
Note: Assessment based on classical computing model; quantum computing may affect asymmetric algorithm security.