http-message-signatures 0.4.0

Installation

pip3 install http-message-signatures

Synopsis

from http_message_signatures import HTTPMessageSigner, HTTPMessageVerifier, HTTPSignatureKeyResolver, algorithms
import requests, base64, hashlib, http_sfv

class MyHTTPSignatureKeyResolver(HTTPSignatureKeyResolver):
    keys = {"my-key": b"top-secret-key"}

    def resolve_public_key(self, key_id: str):
        return self.keys[key_id]

    def resolve_private_key(self, key_id: str):
        return self.keys[key_id]

request = requests.Request('POST', 'https://example.com/foo?param=Value&Pet=dog', json={"hello": "world"})
request = request.prepare()
request.headers["Content-Digest"] = str(http_sfv.Dictionary({"sha-256": hashlib.sha256(request.body).digest()}))

signer = HTTPMessageSigner(signature_algorithm=algorithms.HMAC_SHA256, key_resolver=MyHTTPSignatureKeyResolver())
signer.sign(request, key_id="my-key", covered_component_ids=("@method", "@authority", "@target-uri", "content-digest"))

verifier = HTTPMessageVerifier(signature_algorithm=algorithms.HMAC_SHA256, key_resolver=MyHTTPSignatureKeyResolver())
verifier.verify(request)

Note that verifying the body content-digest is outside the scope of this package’s functionality, so it remains the caller’s responsibility. The requests-http-signature library builds upon this package to provide integrated signing and validation of the request body.

Authors

• Andrey Kislyuk

Links

• Project home page (GitHub)

• Documentation

• Package distribution (PyPI)

• Change log

• IETF HTTP Message Signatures standard tracker

• OWASP Top Ten

License

Licensed under the terms of the Apache License, Version 2.0.