SHAKE256 Checksum Calculator

About SHAKE256

SHAKE256 is an extendable-output function (XOF) from the SHA-3 family, standardized by NIST in 2015 (FIPS 202). Unlike traditional hash functions, SHAKE256 can produce outputs of any desired length, offering higher security than SHAKE128. It is highly versatile for various cryptographic applications requiring strong security.

Key Features

  • Variable output length (extendable to any desired size).
  • Part of the SHA-3 standard, based on the Keccak sponge function.
  • 256-bit security strength for collision resistance.
  • Efficient implementation in both hardware and software.

Security Benefits

  • Provides 256 bits of security strength against all attacks (higher than SHAKE128).
  • Resistant to length extension attacks.
  • Based on the well-analyzed Keccak permutation.
  • Suitable for applications requiring high security and variable output lengths.

Common Use Cases

  • Key Derivation: Generating multiple keys from a single input requiring high security.
  • Stream Cipher: Using the variable-length output as a high-security keystream.
  • Random Number Generation: Creating high-quality deterministic random numbers.
  • High-Security Applications: When 256-bit security is necessary.
  • Hash-based Signatures: Used in robust post-quantum signature schemes.

SHAKE256 vs SHAKE128

SHAKE128:

  • 128-bit security strength.
  • Faster performance.
  • Suitable for most applications.
  • Lower resource requirements.

SHAKE256:

  • 256-bit security strength.
  • Higher security margin.
  • Better for long-term security.
  • Slightly slower than SHAKE128.