SSH public key parser
Project description
This library validates OpenSSH public keys.
Currently ssh-rsa, ssh-dss (DSA), ssh-ed25519 and ecdsa keys with NIST curves are supported.
Installation:
pip install sshpubkeys
or clone the repository and use
python setup.py install
Usage:
import sshpubkeys ssh = SSHKey("ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAYQCxO38tKAJXIs9ivPxt7AY" "dfybgtAR1ow3Qkb9GPQ6wkFHQqcFDe6faKCxH6iDRteo4D8L8B" "xwzN42uZSB0nfmjkIxFTcEU3mFSXEbWByg78aoddMrAAjatyrh" "H1pON6P0= ojarva@ojar-laptop") print(ssh.bits) # 768 print(ssh.hash()) # 56:84:1e:90:08:3b:60:c7:29:70:5f:5e:25:a6:3b:86
Exceptions
NotImplementedError if invalid ecdsa curve or unknown key type is encountered.
- InvalidKeyException if any other error is encountered:
TooShortKeyException if key is too short (<768 bits for RSA, <1024 for DSA, <256 for ED25519)
TooLongKeyException if key is too long (>16384 for RSA, >1024 for DSA, >256 for ED25519)
InvalidTypeException if key type (“ssh-rsa” in above example) does not match to what is included in base64 encoded data.
MalformedDataException if decoding and extracting the data fails.
Tests
See “tests/” folder for unit tests. Use
python setup.py test
or
python3 setup.py test
to run test suite. If you have keys that are not parsed properly, or malformed keys that raise incorrect exception, please send your public key to olli@jarva.fi, and I’ll include it. Alternatively, create a new issue or make a pull request in github.
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