`ssh_certificate_parser` is a small library for interacting with [OpenSSH host/user certificates](https://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/usr.bin/ssh/PROTOCOL.certkeys?rev=1.15&content-type=text/plain). Specifically, it supports RSA, DSA, and Ed25519 keys signed by an RSA certificate authority. It does not currently validate the CA signature, but merely parses out some fields.
[](https://ssh-certificate-parser.readthedocs.io/en/latest/?badge=latest)
This work is licensed under the ISC license, a copy of which can be found at [LICENSE.txt](LICENSE.txt)
## Usage
This module contains a single class, `SSHCertificate`. You can construct it with the `.from_bytes` or `.from_file` classmethods.
```python
from ssh_certificate_parser import SSHCertificate
cert = SSHCertificate.from_file('/etc/ssh/ssh_host_rsa_key-cert.pub')
remaining_seconds_of_validity = cert.remaining_validity
```
Full documentation is at <https://ssh-certificate-parser.readthedocs.io/en/latest/>.
## Development
```sh
# Install dependencies
make install
# Lint project
make lint
# Test project
make test
make coverage
```
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