---
title: Public Key Format
slug: technical/public-key-format
docTags: 
createdAt: 2026-07-09T17:00:31.932Z
---

As of BOS 10.0.11, BrightSign OS supports trusting SSH authorized public keys. This means that SSH can be used to connect to players using a private key rather than a password. 

Public key authentication can be mixed with password authentication. To disable password authentication, do not set a login password.

## Key Types

Each public key is a space-separated string of the form:

:::BlockQuote
keytype base64-encoded-key optional-comment
:::

Supported key types include:

- ssh-rsa
- ssh-ed25519
- ecdsa-sha2-nistp256
- ecdsa-sha2-nistp384
- ecdsa-sha2-nistp521

## Examples

```none
ssh-rsa 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
ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMVRKpUFfOa0aCHAIx+/16WAyMmTX5dvw4t47Y6M2zNK user@hostname
ecdsa-sha2-nistp521 AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBADt49dAfBqXS6p+OZwU2xZlqBKuDafYtkt1cuYTfIzzzYjek1p6s+tYh0UMwJn1LXBMTkkwshWrtLJeYB2GpMdCrQA3mW7lJjNNJjD4ulx+HyYiLVHvicSJMFuaOhDJDytNf7YLAV61PUijeNoekeeD81jUcwDlVH2uoVPV1TjmeLEU3Q== Comment can contain spaces
```