rsalette 0.4.1

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Compact pure-Python RSA verification.

rsalette provides a compact, < 200 lines, pure-Python 2+3, single file RSA verification library that is compatible with JSON Web Key.

It includes a JSON Web Signature (JWS) / JSON Web Token (JWT) verifier that can be used for OpenID Connect.

It includes asn1lette, a limited asn.1 parser that can parse RSA public keys from PEM or DER data.

rsalette comes with no warranty, but if you’d like to do an audit, it’s short.

Usage:

import rsalette
verifier = rsalette.PublicKey.from_jwk({'kty':'RSA', 'e':'AQAB', 'n': ...})
verified_message = verifier.verify(message, signature)

For JSON Web Token:

openid_configuration = { ... } # value from .well-known/openid-configuration
id_token = '...' # value from OpenID Connect remote user
jwks = requests.get(openid_configuration['jwks_uri']).json()
payload = rsalette.verify_jwt(id_token, jwks)