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Title: [ANN] hecs.py: Encrypt text with bitcoin addresses Post by: ktofu on May 10, 2014, 06:32:36 PM Hi all,
I made a GUI for encrypting messages with bitcoin addresses. - Source at https://github.com/eudemonia-research/hec (https://github.com/eudemonia-research/hec) - Screenshots at http://imgur.com/a/iOpyP (http://imgur.com/a/iOpyP) - Uses the blockchain.info API to get the public key. Note that they don't have keys from early transactions for some reason - the session key is encrypted with the public key using the EC group operation - the message is encrypted with aes in counter mode - sha256 for the hmac - tested with python3 only Plans: - custom encryption options - cxfreeze an exe, so my friends who don't wanna learn to use linux can play along Installation: It's on pypi. It depends on PyQt5, pycoin, and pycrypto. For some reason I had to install pycoin manually (no idea why). Install with: Code: pip install hec Code: hecs.py Screenshot: https://i.imgur.com/QpGuODl.png feedback and suggestions welcome - ktofu Title: Re: [ANN] hecs.py: Encrypt text with bitcoin addresses Post by: bitsmichel on May 11, 2014, 07:32:16 AM Interesting idea, I may hack a little with it today
Title: Re: [ANN] hecs.py: Encrypt text with bitcoin addresses Post by: bitsmichel on May 11, 2014, 11:41:15 PM Which wallet software you using?
To get the pubkey works well: Quote #!/usr/bin/env python import binascii import os import re import sys import requests def search_for_pubkey(address): response = requests.get('https://blockchain.info/q/pubkeyaddr/' + address) pubkey_hex = response.text if len(pubkey_hex) < 16: raise Exception("Pubkey not found") return pubkey_hex Title: Re: [ANN] hecs.py: Encrypt text with bitcoin addresses Post by: ktofu on May 12, 2014, 06:21:43 AM Using the pycoin library for ecdsa and address stuff.
Title: Re: [ANN] hecs.py: Encrypt text with bitcoin addresses Post by: bitsmichel on May 13, 2014, 12:21:02 AM I was thinking about it today, is it not a higher security risk? I mean if someone has a lot of your encrypted messages and finds the key, he/she would also be able to access your money ???
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