Skip to content

Create Post “using-self-signed-ca-certificates-with-git-on-windows” #2

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Create Post “using-self-signed-ca-certificates-with-git-on-windows” #2

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
35 changes: 35 additions & 0 deletions source/_posts/using-self-signed-ca-certificates-with-git-on-windows.md
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,35 @@
---
title: Using self signed CA certificates with git on Windows
date: '2018-04-18T21:41:20-05:00'
tags: git windows certificate
---
Using git internally to access github? Behind a corporate proxy that has an self signed CA cert? Is git complaining about 'SSL certificate problem: unable to get local issuer certificate'? Here ya go.

First, I must thank Philip Kelly for posting an article on this exact situation back in 2014. I also want to say thank you to Alejandro Campos Magencio for the post on getting the certificate chain. I put those two together with the exporting of the certifcate to a file to produce this post.

[Philip Kelley's post](https://blogs.msdn.microsoft.com/phkelley/2014/01/20/adding-a-corporate-or-self-signed-certificate-authority-to-git-exes-store/)

[Alejandro Campos Magencio' post](https://blogs.msdn.microsoft.com/alejacma/2011/06/21/how-to-verify-validity-of-certificates-with-net/)

Philip's post works but I wanted a way to do it from Powershell so I could very easily share the solution with others.

```powershell
CLEAR

Write-Host "Getting certificate for internal site"

$request = [Net.WebRequest]::Create("https://internalsite.supercorp")
$request.GetResponse() | Out-Null
$cert = $request.ServicePoint.Certificate
$bytes = $cert.Export([Security.Cryptography.X509Certificates.X509ContentType]::Cert)
Set-Content -value $bytes -encoding byte -path "internalsite.supercorp.cer"

Write-Host "Getting chain for CA cert"
$chain = New-Object -TypeName System.Security.Cryptography.X509Certificates.X509Chain
$chain.Build($cert)

$root = $chain.ChainElements | Select -Last 1

$bytes = $root.Certificate.Export([Security.Cryptography.X509Certificates.X509ContentType]::Cert)
Set-Content -value $bytes -encoding byte -path "supercorp.ca.cer"
```