BLAKE2 Hash Function

BLAKE2 is a cryptographic hash function that is faster than MD5, SHA-1, SHA-2, and SHA-3, yet is at least as secure as the latest standard SHA-3.

Text Hashing

Generate a BLAKE2 hash from text input

BLAKE2 Hash:

File Hashing

Generate a BLAKE2 hash from a file

BLAKE2 Hash:

About BLAKE2

BLAKE2 is a cryptographic hash function designed as a replacement for the widely used but aging MD5 and SHA-1 algorithms. It was designed by Jean-Philippe Aumasson, Samuel Neves, Zooko Wilcox-O'Hearn, and Christian Winnerlein.

Key Features:
  • Speed: BLAKE2 is faster than MD5, SHA-1, SHA-2, and SHA-3 on modern CPUs
  • Security: Provides security at least as strong as SHA-3
  • Simplicity: Simple design makes it easier to implement correctly
  • Versatility: Can be used as a MAC, KDF, or random number generator
  • Parallelism: Efficiently parallelizable for even faster operation on multi-core systems
Variants:
  • BLAKE2b: Optimized for 64-bit platforms, produces digests of up to 64 bytes (512 bits)
  • BLAKE2s: Optimized for 8- to 32-bit platforms, produces digests of up to 32 bytes (256 bits)
  • BLAKE2bp: A parallelized version of BLAKE2b
  • BLAKE2sp: A parallelized version of BLAKE2s
How it Works:

BLAKE2 is based on the ChaCha stream cipher and uses an internal state of 16 words. The compression function mixes the input message with the internal state through a series of addition, XOR, and rotation operations. The algorithm processes the input in blocks and updates the internal state for each block.

The BLAKE2 algorithm can be used with an optional key, turning it into a MAC (Message Authentication Code). When used with a key, BLAKE2 provides both integrity and authenticity verification.

Note: BLAKE2 is widely used in modern cryptographic applications and is considered one of the most secure and efficient hash functions available today. It's used in many security-critical applications, including password hashing, file integrity verification, and digital signatures.