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Security Interface for you project.

Project description

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Security Interface

This library provides easy API for authentication and authorization.

Installation

Install with the following command:

$ pip install security_interface

Usage

First of all you need implement IdentityPolicyInterface and AuthorizationPolicyInterface interfaces. For example we can implement JWT Security:

import jwt
from security_interface import IdentityPolicyInterface, AuthorizationPolicyInterface

class JwtIdentityPolicy(IdentityPolicyInterface):
    def __init__(self, secret, algorithm="HS256"):
        self.algorithm = algorithm
        self.secret = secret

    async def identify(self, identity):
        if jwt is None:
            raise TypeError("Please install PyJWT")
        try:
            return jwt.decode(
                identity,
                self.secret,
                algorithms=[self.algorithm],
                options={"verify_exp": True, "verify_iat": True},
            )
        except Exception as e:
            return None

class JwtAuthPolicy(AuthorizationPolicyInterface):
    async def can(self, identity, permission):
        return permission in identity["scope"]

Create security instance with our implementation

from security_interface.api import Security
jwt_identity = JwtIdentityPolicy("SECRET")
jwt_auth_policy = JwtAuthPolicy()
security = Security(jwt_identity, jwt_auth_policy)
# Checking claim
security.identify(CLAIM)
# Checking permission
security.can(CLAIM, "read")
security.can(CLAIM, "write")

For full implementation see DEMO

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