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My Raspberry Pi is running the default Debian image and has SSH enabled. I log into my Pi as follows:

ssh pi@<IP-address-of-my-Pi>

I have to enter my password every time. Can I somehow make my Pi accept log ins from my local machine? I am running Fedora Linux.

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It's a question specific to users or developers (interacting via SSH-clients) of the Raspberry Pi (used as an SSH-Server), so it should be OK to ask, if I interpret the FAQ correctly. –  Bengt Jul 3 '12 at 23:09
We've come to a consensus that if you could not tell if a question is about the Raspberry Pi if all references to it is removed, then it is off-topic. We also discuss questions before deciding that they are better off closed in the official chat room. Feel free to join in if you have a question! –  Bryan Dunsmore Jul 3 '12 at 23:17
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migrated from raspberrypi.stackexchange.com Jul 9 '12 at 18:27

This question came from our site for users and developers of hardware and software for Raspberry Pi.

2 Answers

up vote 10 down vote accepted

Yes, you can automate the authentication with your Raspberry Pi using SSH.

As prerequisites the following is required:


Under Linux you can install SSH via you package manager, generate a keypair using ssh-keygen, copy the key to the Pi using ssh-copy-id and test using ssh.

Install SSH on Linux

Most Linux distributions come with an SSH-client preinstalled. If you should for some reason not have one, install it using your package manager:

For RPM-based Linux distributions (eg. Fedora and Suse):

sudo yum install ssh

For DEB-based Linux distributions (eg. Debian and Ubuntu):

sudo apt-get install ssh

Generate a Keypair on Linux

First, you will need a public/private keypair. So if you don't have one, run the following command to generate a keypair with the default settings.

$ ssh-keygen
generating public/private rsa key pair.
Enter file in which to save the key (/home/user/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/user/.ssh/id_rsa.
Your public key has been saved in /home/user/.ssh/id_rsa.pub.
The key fingerprint is:
24:55:ee:67:83:72:82:55:5f:b9:b4:09:2a:fa:56:a1 user@client.local
The key's randomart image is:
+--[ RSA 2048]----+
|                 |
|                 |
|                 |
|         +    .  |
|        S    E   |
|         .  + +  |
|          .o . o.|
|         o.oo. oo|
|          ==o.BO+|

Copy the Public Key to the Pi on Linux

Secondly, you will need to copy the generated public key to the machine you want to log to without a password. So, run the following command on the machine and as the user, you want to be able to access the Pi:

$ ssh-copy-id pi@<IP-address-of-your-Pi>
Now try logging into the machine, with "ssh 'pi@<IP-address-of-your-Pi>'", and check in:
to make sure we haven't added extra keys that you weren't expecting.

SSH into the Pi on Linux

Finally, log in using SSH, to verify that no password is requested:

$ ssh pi@<IP-address-of-your-Pi>
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Maybe you are right. That should be an own question, thought. I will create one if it doesn't exist and link it here. –  Bengt Jul 3 '12 at 21:40
I've added the explanation on how to generate a key, its waiting for peer review –  user689893 Jul 3 '12 at 21:43
@bngtlrs you may want to clarify that these instructions don't work on a Windows PC and ideally explain how to do this froma PC. –  Steve Robillard Jul 3 '12 at 22:00
@SteveRobillard I have no clean solution for windows. Maybe I should make clearer, that the question is Linux-specific and someone else should care about windows in another question. –  Bengt Jul 3 '12 at 22:21
@bngtlrs If I get a chance tomorrow I will post an answer for the windows crowd if you don't mind alternatively I could make an edit to your post for your review and approval. –  Steve Robillard Jul 3 '12 at 22:29
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Check the permissions on the files you're trying to copy to make sure the user you're logging in as over ssh has permission to read them.

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The OPs issue is with logins, not copying files... –  jasonwryan Nov 30 '12 at 7:34
Yes, my question was about copying my id. You, Joe, are in principle right about that permissions can cause issues when trying to log in, but that should be handled in another Q&A. –  Bengt Nov 30 '12 at 11:16
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