codeaken / sshkey
Library for working with and generating SSH keys
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Requires
- php: >=5.4.0
- phpseclib/phpseclib: ^2.0
Requires (Dev)
- phpunit/phpunit: 4.4.*
This package is not auto-updated.
Last update: 2024-11-04 18:24:11 UTC
README
This library allows you to work with public and private keys in PHP.
- Read keys both from a file and from other sources like a database
- Convert between key formats
- Get a public keys fingerprint
- Generate new key-pairs
It depends on phpseclib for all of the key manipulation.
Installation
Require the package in your composer.json and then run composer update
"require": {
...
"codeaken/sshkey": "1.*"
...
},
Usage
These examples makes the following assumptions:
- The library is autoloaded, for example by having included
vendor/autoload.php
somewhere in your project - You have a a key-pair in your current directory called
id_rsa
(private) andid_rsa.pub
(public). The private key is not encrypted. - An encrypted private key in your current directory called
id_encrypted_rsa
protected by the passwordabc123
Read a key from a file
<?php // Read in the public and private keys $publicKey = SshPublicKey::fromFile('id_rsa.pub'); $privateKey = SshPrivateKey::fromFile('id_rsa'); $encryptedPrivateKey = SshPrivateKey::fromFile('id_encrypted_rsa', 'abc123'); // Try to read a key that does not exists; will throw a FileNotFoundException try { $missingKey = SshPublicKey::fromFile('nosuchkey.pub'); } catch (Codeaken\SshKey\Exception\FileNotFoundException $e) { echo 'Could not find the key'; } // Try to read an encrypted private key using the wrong password; will throw a // LoadKeyException try { $encryptedKey = SshPrivateKey::fromFile('id_encrypted_rsa', 'wrongpass'); } catch (Codeaken\SshKey\Exception\LoadKeyException $e) { echo 'Could not decrypt the private key'; }
Read a key from a non file source
<?php // In this case we will read the key data from a file for simplicity but it // could come from a database or some other source $publicKeyData = file_get_contents('id_rsa.pub'); $publicKey = new SshPublicKey($publicKeyData); $encryptedPrivateKeyData = file_get_contents('id_encrypted_rsa'); $privateKey = new SshPrivateKey($encryptedPrivateKeyData, 'abc123');
Get a public keys fingerprint and comment
<?php $publicKey = SshPublicKey::fromFile('id_rsa.pub'); echo $publicKey->getFingerprint(); echo $publicKey->getComment();
Generate a new keypair
<?php // 1024 bits and no passphrase $keyPair1 = SshKeyPair::generate(1024); // 2048 bits and a passphrase of abc123 $keyPair2 = SshKeyPair::generate(2048, 'abc123'); echo $keyPair2->getPrivateKey()->getKeyData(SshKey::FORMAT_PKCS8); echo $keyPair2->getPublicKey()->getKeyData(SshKey::FORMAT_OPENSSH);
Save a key to a file
<?php $keyPair = SshKeyPair::generate(); $publicKey = $keyPair->getPublicKey(); $privateKey = $keyPair->getPrivateKey(); file_put_contents('id_new_rsa.pub', $publicKey->getKeyData(SshKey::FORMAT_OPENSSH)); file_put_contents('id_new_rsa', $privateKey->getKeyData(SshKey::FORMAT_PKCS8));
License
SshKey is licensed under the MIT License.
Copyright 2014 Magnus Johansson