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b3sum

by BLAKE3 Teamv1.8.7

Last updated

Command-line implementation of the BLAKE3 cryptographic hash function. Prints the BLAKE3 hashes of files or of standard input.

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Install with winget

$ winget install --id BLAKE3-Team.b3sum --exact --version 1.8.7

Run in Command Prompt, PowerShell, or Windows Terminal. Prompts for any agreements.

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About

Command-line implementation of the BLAKE3 cryptographic hash function. Prints the BLAKE3 hashes of files or of standard input.

BLAKE3 is a cryptographic hash function that is:

- Much faster than MD5, SHA-1, SHA-2, SHA-3, and BLAKE2.

- Secure, unlike MD5 and SHA-1. And secure against length extension, unlike SHA-2.

- Highly parallelizable across any number of threads and SIMD lanes, because it's a Merkle tree on the inside.

- Capable of verified streaming and incremental updates, again because it's a Merkle tree.

- A PRF, MAC, KDF, and XOF, as well as a regular hash.

- One algorithm with no variants, which is fast on x86-64 and also on smaller architectures.

BLAKE3 is based on an optimized instance of the established hash function BLAKE2 and on the original Bao tree mode. The specifications and design rationale are available in the BLAKE3 paper. The default output size is 256 bits. The current version of Bao implements verified streaming with BLAKE3.

Installers · v1.8.7

ArchitectureTypeScopeInstallDownload
x64Portable-Direct

Copy a command tailored to that specific architecture, type, and scope - useful when winget would otherwise pick a different default.

Security

No known CVEs for b3sum.

Coverage is best-effort and depends on a winget package mapping to an NVD CPE entry. Absence here is not a guarantee of safety.

Frequently asked questions

How do I install b3sum on Windows?
Open Windows Terminal, PowerShell, or Command Prompt and run: winget install --id BLAKE3-Team.b3sum --exact --version 1.8.7. winget downloads the installer from BLAKE3 Team and runs it. Requires Windows 10 (1809+) or Windows 11.
How do I install b3sum silently for unattended deployment?
Add --silent and accept the agreements upfront: winget install --id BLAKE3-Team.b3sum --exact 1.8.7 --silent --accept-package-agreements --accept-source-agreements. This is the variant Intune, Configuration Manager, and other deployment tools should use.
How do I uninstall b3sum via winget?
Run: winget uninstall --id BLAKE3-Team.b3sum --exact. Add --silent for unattended uninstalls. winget will use the registered uninstaller from b3sum's Apps & Features entry.
Is b3sum free?
b3sum is distributed under CC0-1.0 OR Apache-2.0 OR (Apache-2.0 WITH LLVM-exception). Refer to the publisher (https://github.com/BLAKE3-team/BLAKE3) for the full license terms - Wingetly itself does not charge for installation.
Does b3sum work on Windows 10?
Yes, as long as your Windows 10 build supports winget (1809 or newer). winget ships with App Installer on Windows 10/11 and pulls b3sum directly from the publisher.
How do I keep b3sum up to date?
Run winget upgrade --id BLAKE3-Team.b3sum --exact, or winget upgrade --all to update everything winget tracks. We index 3 versions of b3sum from microsoft/winget-pkgs.

Recent versions

  • 1.8.7latest
  • 1.8.6
  • 1.8.5