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Downloads of v 2.8.0:


Last Update:

27 Apr 2024

Package Maintainer(s):

Software Author(s):

  • Johann N. Löfflmann


file checksum java commandline


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2.8.0 | Updated: 27 Apr 2024



Downloads of v 2.8.0:



Software Author(s):

  • Johann N. Löfflmann

Jacksum 2.8.0

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This Package Contains an Exempted Check

Not All Tests Have Passed

Validation Testing Passed

Verification Testing Exemption:

Package passes in Test Environment, fails in verifier, unknown cause.


Scan Testing Successful:

No detections found in any package files

Learn More

Deployment Method: Individual Install, Upgrade, & Uninstall

To install Jacksum, run the following command from the command line or from PowerShell:


To upgrade Jacksum, run the following command from the command line or from PowerShell:


To uninstall Jacksum, run the following command from the command line or from PowerShell:


Deployment Method:


This applies to both open source and commercial editions of Chocolatey.

1. Enter Your Internal Repository Url

(this should look similar to https://community.chocolatey.org/api/v2/)

2. Setup Your Environment

1. Ensure you are set for organizational deployment

Please see the organizational deployment guide

2. Get the package into your environment

  • Open Source or Commercial:
    • Proxy Repository - Create a proxy nuget repository on Nexus, Artifactory Pro, or a proxy Chocolatey repository on ProGet. Point your upstream to https://community.chocolatey.org/api/v2/. Packages cache on first access automatically. Make sure your choco clients are using your proxy repository as a source and NOT the default community repository. See source command for more information.
    • You can also just download the package and push it to a repository Download

3. Copy Your Script

choco upgrade jacksum -y --source="'INTERNAL REPO URL'" [other options]

See options you can pass to upgrade.

See best practices for scripting.

Add this to a PowerShell script or use a Batch script with tools and in places where you are calling directly to Chocolatey. If you are integrating, keep in mind enhanced exit codes.

If you do use a PowerShell script, use the following to ensure bad exit codes are shown as failures:

choco upgrade jacksum -y --source="'INTERNAL REPO URL'" 

Write-Verbose "Exit code was $exitCode"
$validExitCodes = @(0, 1605, 1614, 1641, 3010)
if ($validExitCodes -contains $exitCode) {
  Exit 0

Exit $exitCode

- name: Install jacksum
    name: jacksum
    version: '2.8.0'
    state: present

See docs at https://docs.ansible.com/ansible/latest/modules/win_chocolatey_module.html.

chocolatey_package 'jacksum' do
  action    :install
  source   'INTERNAL REPO URL'
  version  '2.8.0'

See docs at https://docs.chef.io/resource_chocolatey_package.html.

cChocoPackageInstaller jacksum
    Name     = "jacksum"
    Version  = "2.8.0"
    Source   = "INTERNAL REPO URL"

Requires cChoco DSC Resource. See docs at https://github.com/chocolatey/cChoco.

package { 'jacksum':
  ensure   => '2.8.0',
  provider => 'chocolatey',
  source   => 'INTERNAL REPO URL',

Requires Puppet Chocolatey Provider module. See docs at https://forge.puppet.com/puppetlabs/chocolatey.

4. If applicable - Chocolatey configuration/installation

See infrastructure management matrix for Chocolatey configuration elements and examples.


Private CDN cached downloads available for licensed customers. Never experience 404 breakages again! Learn more...

Package Approved

This package was approved by moderator Windos on 04 May 2024.



Cross Platform

Jacksum works on Microsoft Windows, macOS, and GNU/Linux. It even works on Android. Since Jacksum is written in Java
you don't need to recompile it. It works out of the box the platform independent way.

Use Cases

Jacksum covers many types of use cases in which hash values make sense:

Calculating of hash values/fingerprints of almost any input
(command line args, console, standard input, plain or encoded strings, files, partitions, disks, NTFS ADS, pipes,
sockets, doors, ...)
Finding OK/failed/missing/new files (verify file/data integrity)
Finding files by their fingerprints for positive matching
Finding files that do not match certain fingerprints for negative matching
Finding all duplicates of a file by its hash value
Finding the algorithm(s) that generated a certain hash value
Investigate polynomials of CRCs
Investigate parameters of HMACs

Algorithm Support

Jacksum supports 489 hash functions, both cryptographic and non-cryptographic hash function sets, including CRCs and classic checksums:

Adler-32, ascon-hash, ascon-hasha, ascon-xof, ascon-xofa, AST strsum PRNG hash, BLAKE-[224,256,348,512], BLAKE2b-[8..512],

BLAKE2s-[8..256], BLAKE2bp, BLAKE2sp, BLAKE3, cksum (Minix), cksum (Unix), CRC-8 (FLAC), CRC-16 (LHA/ARC), CRC-16 (Minix),
FCS-16, CRC-24 (OpenPGP), CRC-32 (FCS-32), CRC-32 (MPEG-2), CRC-32 (bzip2), CRC-32 (FDDI), CRC-32 (UBICRC32), CRC-32 (PHP's
crc32), CRC-64 (ISO 3309), CRC-64 (ECMA-182), CRC-64 (prog lang GO, const ISO), CRC-64 (.xz and prog lang GO, const ECMA),
CRC-82/DARC, DHA-256, ECHO-[224,256,348,512], ed2k, ELF (Unix), esch256, esch384, Fletcher's Checksum, FNV-0_[32,64,128,256,512,1024],
FNV-1_[32,64,128,256,512,1024], FNV-1a_[32,64,128,256,512,1024], FORK-256, Fugue-[224,256,348,512], GOST Crypto-Pro (GOST R 34.11-94),
GOST R 34.11-94, Groestl-[224,256,384,512], HAS-160 (KISA), HAVAL-128-[3,4,5], HAVAL-[160,192,224,256]-[3,4,5],
JH[224,256,284,512], joaat, KangarooTwelve, Keccak[224,256,384,512], Kupyna[256,384,512] (DSTU 7564:2014),
LSH-256-[224,256], LSH-512-[224,256,384,512] (KS X 3262), Luffa-[224,256,348,512], MD2, MD4, MD5, MDC2, MarsupilamiFourteen,
PANAMA, PRNG hash, RIPEMD-128, RIPEMD[160,256,320], RadioGatun[32,64], SHA-0, SHA-1, SHA-[224,256,384,512],
SHA-512/[224,256] (NIST FIPS 180-4), SHA3-[224,256,384,512], SHAKE[128,256] (NIST FIPS 202), SM3, Skein-1024-[8..1024],
Skein-256-[8..256], Skein-512-[8..512], Streebog-[256,512] (GOST R 34.11-2012), sum (BSD Unix), sum (Minix),
sum (System V Unix), sum [8,16,24,32,40,48,56,64], Tiger, Tiger/128, Tiger/160, Tiger2, photon-beetle, PHP Tiger
variants (tiger192,4, tiger160,4, and tiger128,4), VSH-1024, Whirpool-0, Whirlpool-T, Whirlpool, Xoodyak, xor8, and XXH32.

Jacksum supports HMAC, a mechanism for message authentication using any iterated cryptographic hash function in
combination with a secret shared key.

Jacksum supports the "Rocksoft (tm) Model CRC Algorithm" to describe CRCs, so additional 1.0399*10^267 customized
CRCs can be used.

Package-specific issue

If this package isn't up-to-date for some days, Create an issue

Support the package maintainer and Patreon

#SingleInstance Force  ; Limit to only one run

SetTitleMatchMode(2)  ; accept incomplete title

WinWait("Jacksum")  ; wait for a window with "Jacksum" in the title to open
WinWaitActive("Jacksum")  ; wait for the window to be active

ControlClick("OK", "Jacksum")  ; Clic on OK

WinWaitClose("Jacksum")  ; Wait for window to close

ExitApp  ; end the script
$ErrorActionPreference = 'Stop'

$packageName = $env:ChocolateyPackageName
$url = 'https://github.com/jonelo/jacksum-fbi-windows/releases/download/v2.8.0/jacksum-3.7.0-hashgarten-0.17.0-for-windows-2.8.0.zip'
$toolsDir = "$(Split-Path -parent $MyInvocation.MyCommand.Definition)"
$checksum = '2a9f115f23ac2715b767c9d9f812ee172f797a3ebb498a58ddcea8b36d2ee461'
$checksumType = 'sha256'

$packageArgs = @{
	packageName   = $env:ChocolateyPackageName
	unzipLocation = $toolsDir
	url           = $url
	checksum      = $checksum
	checksumType  = $checksumType

Install-ChocolateyZipPackage @packageArgs

$file = (Get-ChildItem -Path $toolsDir -Include "*.exe" -Recurse).FullName

$packageArgs = @{
	packageName   = $env:ChocolateyPackageName
	fileType      = 'EXE'
	file          = $file
	softwareName  = 'Jacksum*'
	silentArgs   = '/S'

$ahkFile = Join-Path $toolsDir "chocolateyInstall.ahk"
$ahkExe = 'AutoHotKey.exe'
$ahkRun = "$Env:Temp\$(Get-Random).ahk"
Copy-Item $ahkFile "$ahkRun" -Force
Start-Process $ahkExe $ahkRun

Install-ChocolateyInstallPackage @packageArgs

Log in or click on link to see number of positives.

In cases where actual malware is found, the packages are subject to removal. Software sometimes has false positives. Moderators do not necessarily validate the safety of the underlying software, only that a package retrieves software from the official distribution point and/or validate embedded software against official distribution point (where distribution rights allow redistribution).

Chocolatey Pro provides runtime protection from possible malware.

Add to Builder Version Downloads Last Updated Status
Jacksum 2.7.0 18 Thursday, April 4, 2024 Approved
Jacksum 2.6.0 48 Friday, March 15, 2024 Approved
Jacksum 1.7.0 1099 Sunday, February 8, 2015 Approved
Discussion for the Jacksum Package

Ground Rules:

  • This discussion is only about Jacksum and the Jacksum package. If you have feedback for Chocolatey, please contact the Google Group.
  • This discussion will carry over multiple versions. If you have a comment about a particular version, please note that in your comments.
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  • Tell us what you love about the package or Jacksum, or tell us what needs improvement.
  • Share your experiences with the package, or extra configuration or gotchas that you've found.
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