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cryptography

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laanwj
laanwj commented Nov 25, 2021

I accidentally -torcontrol=1 today (instead of -listenonion=1) and was confused that it was accepted, as the argument needs to be host:port.

Expected outcome would be an error message and exiting.

Useful skills:

  • C++
  • Understanding of bitcoin core's initialization sequence

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For guidance on contributing, please read [CONTRIBUTING.md](http

SkeletalDemise
SkeletalDemise commented Sep 21, 2020

Hey Hackers of this spoopy month! 👻
Welcome to the Ciphey repo(s)!
This issue requires you to add a decoder.

This wiki section walks you through EVERYTHING you need to know, and we've added some more links at the bottom of this issue to detail more about the decoder.
https://github.com/Ciphey/Ciphey/wiki#adding-your-own-crackers--decoders

https://www.dcode.fr/t9-cipher
https://en.wikipe

enhancement good first issue feature_request hacktoberfest
cryptomator
AbelLykens
AbelLykens commented May 27, 2022

Background

It's unclear to many people what sphinxreplay.db is for.

Context

Replying to the question: "What is sphinxreplay.db for", on Slack:
@Roasbeef : "Security: it prevents replays of onion packets, w/o this ppl can collect onion packetrs then re-inject them and see where they travel to attempt to de-annon"
@Roasbeef : "I think we might be the only impl that handles them pr

onion routing beginner documentation good first issue
rippled
ximinez
ximinez commented Dec 8, 2021

Issue Description

The instructions provided on failed jobs (example) don't clearly explain where to find the generated patch file. This can be a problem for anyone who is not familiar with how Github Actions pages are organized.

The general idea is:

From the details page, click on "Summary", then scroll down to the "Artifacts" secti

Good First Issue CI Documentation
baldwinmatt
baldwinmatt commented Jun 26, 2020

Problem:

A common pattern is:

GUARD(s2n_stuffer_skip_write(stuffer, bytes_to_write));
uint8_t* ptr = suffer->blob.data + stuffer->write_cursor - bytes_to_write;

which could be simplified.

Solution:

*ptr could be an *out parameter to s2n_stuffer_skip_write

  • Does this change what S2N sends over the wire? No.
  • Does this change any public APIs? No.
good first issue difficulty/beginner CBMC

HElib is an open-source software library that implements homomorphic encryption. It supports the BGV scheme with bootstrapping and the Approximate Number CKKS scheme. HElib also includes optimizations for efficient homomorphic evaluation, focusing on effective use of ciphertext packing techniques and on the Gentry-Halevi-Smart optimizations.

  • Updated Apr 3, 2022
  • C++

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