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Verify Integrity of MongoDB Packages

The MongoDB release team digitally signs all software packages to certify that a particular MongoDB package is a valid and unaltered MongoDB release. Before installing MongoDB, you should validate the package using either the provided PGP signature or SHA-256 checksum.

PGP signatures provide the strongest guarantees by checking both the authenticity and integrity of a file to prevent tampering.

Cryptographic checksums only validate file integrity to prevent network transmission errors.

Verify Linux/macOS Packages

Use PGP/GPG

MongoDB signs each release branch with a different PGP key. The public key files for each release branch since MongoDB 2.2 are available for download from the key server in both textual .asc and binary .pub formats.

1

Download the MongoDB installation file.

Download the binaries from https://www.mongodb.org/downloads based on your environment.

For example, to download the 3.4.9 release for macOS through the shell, run this command:

curl -LO https://fastdl.mongodb.org/osx/mongodb-osx-ssl-x86_64-3.4.9.tgz
2

Download the public signature file.

curl -LO https://fastdl.mongodb.org/osx/mongodb-osx-ssl-x86_64-3.4.9.tgz.sig
3

Download then import the key file.

If you have not downloaded and imported the MongoDB 3.4 public key, run these commands:

curl -LO https://www.mongodb.org/static/pgp/server-3.4.asc
gpg --import server-3.4.asc

PGP should return this response:

gpg: key BC711F9BA15703C6: public key "MongoDB 3.4 Release Signing Key <packaging@mongodb.com>" imported
gpg: Total number processed: 1
gpg:               imported: 1
4

Verify the MongoDB installation file.

Run this command:

gpg --verify mongodb-osx-ssl-x86_64-3.4.9.tgz.sig mongodb-osx-ssl-x86_64-3.4.9.tgz

GPG should return this response:

gpg: Signature made Mon Sep 11 12:03:48 2017 EDT
gpg:                using RSA key BC711F9BA15703C6
gpg: Good signature from "MongoDB 3.4 Release Signing Key <packaging@mongodb.com>" [unknown]

If you receive a message this error message, confirm that you imported the correct public key:

gpg: Signature made Mon Sep 11 12:03:48 2017 EDT using RSA key BC711F9BA15703C6
gpg: Can't check signature: public key not found

gpg will return the following message if the package is properly signed, but you do not currently trust the signing key in your local trustdb.

gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 0C49 F373 0359 A145 1858  5931 BC71 1F9B A157 03C6

Use SHA-256

1

Download the MongoDB installation file.

Download the binaries from https://www.mongodb.org/downloads based on your environment.

For example, to download the 3.4.9 release for macOS through the shell, type this command:

curl -LO https://fastdl.mongodb.org/osx/mongodb-osx-ssl-x86_64-3.4.9.tgz
2

Download the SHA256 file.

curl -LO https://fastdl.mongodb.org/osx/mongodb-osx-ssl-x86_64-3.4.9.tgz.sha256
3

Use the SHA-256 checksum to verify the MongoDB package file.

Compute the checksum of the package file:

shasum -c mongodb-osx-ssl-x86_64-3.4.9.tgz.sha256

which should return the following if the checksum matched the downloaded package:

mongodb-osx-ssl-x86_64-3.4.9.tgz: OK

Verify Windows Packages

This verifies the MongoDB binary against its SHA256 key. This tutorial uses the latest release of MongoDB Community Edition 3.4, but the procedure works on all versions and editions.

1

Download the Sigcheck utility from Microsoft.

  1. Visit the Sigcheck utility page.

  2. Click the Download Sigcheck link.

  3. Unzip Sigcheck.zip.

  4. Move the Sigcheck directory to an appropriate location on your Windows host.

    For this tutorial, this location is $Env:ProgramFiles\Sigcheck.

2

Download the MongoDB installation file.

Download the binaries from https://www.mongodb.org/downloads.

Example

To download the v3.4-latest release for Windows using Powershell, invoke this command:

Invoke-WebRequest -Uri "https://downloads.mongodb.org/win32/mongodb-win32-x86_64-2008plus-ssl-v3.4-latest-signed.msi" `
  -OutFile "$Env:HomePath\Downloads\mongodb-win32-x86_64-2008plus-ssl-v3.4-latest-signed.msi"
3

Download the public signature file.

Download the md5 from https://www.mongodb.org/downloads.

Example

To download the SHA256 signature for the v3.4-latest release for Windows using Powershell, invoke this command:

Invoke-WebRequest -Uri "https://downloads.mongodb.org/win32/mongodb-win32-x86_64-2008plus-ssl-v3.4-latest-signed.msi.sha256" `
  -OutFile "$Env:HomePath\Downloads\mongodb-win32-x86_64-2008plus-ssl-v3.4-latest-signed.msi.sha256"
4

Verify the signature of the MongoDB installer.

Invoke Sigcheck:

$Env:ProgramFiles\Sigcheck\sigcheck64.exe `
  -h $Env:HomePath\Downloads\mongodb-win32-x86_64-2008plus-ssl-v3.4-latest-signed.msi

Note

Click Agree to accept the EULA when it displays.

Sigcheck returns this verification information for the latest release of MongoDB 3.4:

Sigcheck v2.60 - File version and signature viewer
Copyright (C) 2004-2017 Mark Russinovich
Sysinternals - www.sysinternals.com

$Env:HomePath\downloads\mongodb-win32-x86_64-2008plus-ssl-v3.4-latest-signed.msi:
        Verified:       Signed
        Signing date:   12:34 AM 6/20/2018
        Publisher:      MongoDB, Inc.
        Company:        n/a
        Description:    n/a
        Product:        n/a
        Prod version:   n/a
        File version:   n/a
        MachineType:    n/a
        MD5:    D7866C013989AEE2FA87774EFFF884F0
        SHA1:   E5D7D78E8FFFF9CFF3BD605C3407A55F87F4C8DD
        PESHA1: E5D7D78E8FFFF9CFF3BD605C3407A55F87F4C8DD
        PE256:  8FE0670DF2AB74CCD33910C0AF2F000225BA2ED21330767D95E3F6DED96E6893
        SHA256: 8FE0670DF2AB74CCD33910C0AF2F000225BA2ED21330767D95E3F6DED96E6893
        IMP:    n/a
5

Compare the signature file to the MongoDB installer hash.

To compare the signature file to the hash of the MongoDB binary, invoke this Powershell script:

$sigHash = (Get-Content $Env:HomePath\Downloads\mongodb-win32-x86_64-2008plus-ssl-v3.4-latest-signed.msi.sha256 | Out-String).SubString(0,64).ToUpper(); `
$fileHash = (Get-FileHash $Env:HomePath\Downloads\mongodb-win32-x86_64-2008plus-ssl-v3.4-latest-signed.msi).Hash.Trim(); `
echo $sigHash; echo $fileHash; `
$sigHash -eq $fileHash
8FE0670DF2AB74CCD33910C0AF2F000225BA2ED21330767D95E3F6DED96E6893
8FE0670DF2AB74CCD33910C0AF2F000225BA2ED21330767D95E3F6DED96E6893
True

The command outputs three lines:

  • A SHA256 hash that you downloaded directly from MongoDB.
  • A SHA256 hash computed from the MongoDB binary you downloaded from MongoDB.
  • A True or False result depending if the hashes match.

If the hashes match, the MongoDB binary is verified.