ssh2_parse_key

Parses ssh2 public keys in either openssh or RFC4716/Secsh formats and converts to either format.

At this point any attempt to work with private keys will raise an exception.

Features

• Reads public keys of the following encryption types:-
  • ssh-rsa
  • ssh-dss
  • ecdsa-sha2-nistp256
  • ssh-ed25519
• Reads either Openssh or RFC4716 format public keys
• Can read input sets with either or both formats in
• Can output either format for any key

Installation

With pip:

python3.6 -m pip install ssh2_parse_key

Usage

To use SSH2 Key Parsing in a project

from ssh2_parse_key import Ssh2Key

# although you can create the object from internal data the normal method
# would be to use the parse() or parse_file() which return a list of Ssh2Key objects.
# Ssh2Key objects are immutable.
# Load one or more keys in either openssh or RFC4716 from a file
keys = Ssh2Key.parse_file("/path/to/public_key")

# alternatively
data = Path("/path/to/public_key").read_text()
keys = Ssh2Key.parse(data)

# now those keys can be dealt with...
for public_key in keys:
    print(f"This is a {key.key_type} key")
    print(f"It uses {key.encryption} encryption")
    print(f"comment = {key.comment}")
    print(f"subject = {key.subject}")

    print("RFC4716 format representation")
    print(key.rfc4716())

    print("OpenSSH representation")
    print(key.openssh())

Credits

The package is strongly based on the perl Parse::SSH2::PublicKey module.

Development on the python version was done by Nigel Metheringham <nigelm@cpan.org>