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Calcimator

Encryption Strength Calculator

Complete encryption strength analysis. Key strength, hash functions, cipher modes, post-quantum cryptography, and random number generation.

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Step 1 of 2

How to Use This Calculator
  1. Enter the encryption algorithm and key length.
  2. Set the threat model: current hardware, near-future quantum computer, etc.
  3. Review the effective security level in bits.
  4. Compare to NIST post-quantum standards if quantum resistance is required.
  5. Flag any algorithm/key-length combination with less than 112 bits of effective security for immediate upgrade.
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Formula

Security = 2^(key_bits) operations | Birthday attack = 2^(n/2)

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