Elliptic Curve Cryptography Calculator
Calculate ECC key strength, equivalent RSA key length, security level, and cryptographic parameters.
Inputs
bits
Results
Key Length
256 bits
Equivalent RSA Key Length
512 bits
Security Level
128 bits
Size Advantage over RSA
2×
Brute Force Time0 years
Key Length
256 bits
Equivalent RSA Key Length
512 bits
Security Level
128 bits
Size Advantage over RSA
2×
How to Use This Calculator
- Start by filling in the input fields below. Results update instantly as you type, so you can experiment with different values to see how they affect the outcome.
- Curve Type — Elliptic curve standard Choose from: secp256r1 (256 bits), secp384r1 (384 bits), secp521r1 (521 bits). default: 0.
- Custom Key Length — Custom key length (0 = use curve default) Accepts values from 0 bits to 1,024 bits (default: 256 bits).
- Once all inputs are set, review your results in the Results panel. Here's what each output means:
- Key Length — shown as a numeric value. This is the primary result of this calculator.
- Equivalent RSA Key Length — shown as a numeric value. This is the primary result of this calculator.
- Security Level — shown as a numeric value. This is the primary result of this calculator.
- Size Advantage over RSA — shown as a numeric value. This is the primary result of this calculator.
- Brute Force Time — shown as a numeric value.
- Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
Ad Placeholder
Formula
ECC Security ≈ Key Length / 2Related Calculators
Ad Placeholder