georgepadayatti

#!/usr/bin/env python3

import base64
import hmac
import struct
import sys
import time


def hotp(key, counter, digits=6, digest='sha1'):

georgepadayatti

1.0 Authentication

1.1 Obtain the DataPod URL from the Individual

An application can ask the user to the enter the URL of their datapod. for e.g. this would look like https://george.datapod.igrant.io

If the individual provides a URL that doesn't end with /profile/card#me path then, append that to the provided URL.

1.2 Obtain the OIDC issuer URL for DataPod

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Setup Pipenv in project

Add the following to the ~/.zshrc file

export PIPENV_VENV_IN_PROJECT=1

Create an empty .venv folder in the project path

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JSON-LD context cache in PyLD

Problem

When performing canonization of a JSON-LD document, it is necessary to perform compact, expand and normalise operations. This would involve resolving multiple remote contexts. Since the contexts are located in a remote host, the availability of the resource cannot be garunteed. Fetching a remote resource adds significant latency if the remote server doesn't respond fast.

Solution

Implement a cache for remote contexts. This can be done by caching the responses from the document loader used by PyLD. A simple cache snippet using python dictionary for PyLD is given below.

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For compiling OpenSSL to Apple silicon, follow the below instructions:

1. cd ~
2. wget https://www.openssl.org/source/openssl-1.1.1k.tar.gz
3. tar -xvzf openssl-1.1.1k.tar.gz
4. cd openssl-1.1.1k
5. ./Configure shared enable-rc5 zlib darwin64-arm64-cc --prefix=/usr/local/ssl --openssldir=/usr/local/ssl
6. make -j$(($(nproc)+1))
7. sudo make install
8. export OPENSSL_DIR=/usr/local/ssl/

georgepadayatti

import base64
from codecs import encode

import jwt
from Crypto.PublicKey import RSA

n = "<BASE64 RSA MODULUS>"
e = "<BASE64 RSA EXPONENT>"

# fixing the padding and base64 decoding