cSHAKE256 Hash Generator

About cSHAKE256

cSHAKE256 is a customizable variant of the SHAKE256 extendable-output function (XOF) from the SHA-3 family. It allows for domain separation through function name and customization string parameters.

Features

  • Variable output length (256-2048 bits)
  • Domain separation through function name and customization string
  • Based on the secure SHA-3 algorithm
  • Resistant to length extension attacks

Common Uses

  • Cryptographic applications requiring domain separation
  • Key derivation functions (KDFs)
  • Message authentication codes (MACs)
  • Random number generation

Checksum Applications

While cSHAKE256 can be used for checksums, it is typically overkill for simple checksum applications. However, it becomes valuable when you need:

  • Domain separation between different types of checksums
  • Customizable output lengths for specific applications
  • Additional security features beyond simple error detection

For standard checksum applications, simpler algorithms like CRC32 or MD5 are often more practical.

Security Considerations

  • Provides 256-bit security against collision attacks
  • Resistant to all known cryptanalytic attacks
  • NIST-approved for cryptographic applications