b2sum ☆
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Description:
BLAKE2 b2sum reference binary
Type: Formula  |  Latest Version: 20190724@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  formulae.brew.sh
Category: Security
Tags: cryptography hashing blake2 security checksum reference
Install: brew install b2sum
About:
b2sum is the official reference implementation of the BLAKE2 cryptographic hash function, providing a command-line interface to compute BLAKE2b and BLAKE2s checksums. It serves as a reliable, standards-compliant tool for verifying file integrity and creating cryptographic hashes. This utility is particularly useful for developers and security professionals requiring high-performance hashing with variable output lengths.
Key Features:
  • Reference implementation of BLAKE2 (RFC 7693)
  • Supports both BLAKE2b and BLAKE2s variants
  • Configurable hash lengths and keyed hashing
  • High-performance C implementation
  • Portable across Unix-like systems
Use Cases:
  • Verifying file integrity and detecting data corruption
  • Creating cryptographic checksums for secure file verification
  • Testing and validating BLAKE2 implementations against the reference
  • Generating keyed hashes for message authentication
Alternatives:
  • shasum – Standard SHA-2 family tools; BLAKE2 is generally faster with similar security
  • b2sum (coreutils) – GNU coreutils version; reference implementation may have different feature focus
License: CC0-1.0 OR OpenSSL OR Apache-2.0
Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, arm64_ventura, arm64_monterey, arm64_big_sur, sonoma, ventura, monterey, big_sur, catalina, arm64_linux, x86_64_linux
Version History
Detected Version Rev Change Commit
Sep 13, 2025 1:39pm 0 VERSION_BUMP 4d7393f6
Aug 17, 2024 6:46pm 0 VERSION_BUMP 6fadfb26
Sep 30, 2023 3:22am 0 VERSION_BUMP a86128bb
Aug 15, 2023 2:20pm 0 NEW 442f9cc5
Nov 22, 2022 8:38am 0 VERSION_BUMP fbd6e7ca
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