Five Ways to URL-Encode an SSH Key (and Why Proxmox Rejects Them)

Tue, 28 Jul 2026 20:12:00 -0700

Issue #144 on go-proxmox was opened in April 2024 with the title “Weird sshkeys SSH public key validation error”. It is one of my less proud threads. It’s thirteen comments of people, including me, trying to get a public key into a cloud-init VM through the API. The working answer took more than a year to show up. The fix that finally landed in May is one line. Here’s why it took so long.

Encoding on Luther Monson

Five Ways to URL-Encode an SSH Key (and Why Proxmox Rejects Them)