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The repository for the assignment is public and Github does not allow the creation of private forks for public repositories.

The correct way of creating a private frok by duplicating the repo is documented here.

For this assignment the commands are:

1. Create a bare clone of the repository. (This is temporary and will be removed so just do it wherever.)

git clone --bare git@github.com:usi-systems/easytrace.git

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# delete local tag '12345'
git tag -d 12345
# delete remote tag '12345' (eg, GitHub version too)
git push origin :refs/tags/12345
# alternative approach
git push --delete origin tagName
git tag -d tagName

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As outlined here, there are a couple of situations where you need to authenticate with GitHub by using an Acces Token:-

1. If you have Two-Factor Authentication (2FA) enabled.
2. You are accessing an organisations protected content using SAML Single-Sign On (SSO).

Create an Access Token

In your GitHub account, go to Settings / Developer settings / Personal access tokens and select Generate New Token. Make a note of the token somewhere safe since this is the only chance you get to see it.

Add the token to your local OSX Key Chain

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# Papers
## BulletProof Original Paper
https://eprint.iacr.org/2017/1066.pdf

# Things Intentionally Left Out
## Fiat Shamir
https://en.wikipedia.org/wiki/Feige%E2%80%93Fiat%E2%80%93Shamir_identification_scheme
http://cryptowiki.net/index.php?title=Fiat_-_Shamir_protocol
## Pederson Commitments
https://crypto.stackexchange.com/questions/9704/why-is-the-pedersen-commitment-computationally-binding

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Previously described at: ERC20 critical problems medium article.

Description.

ERC20 is the most common Ethereum token standard. It should be noted that it is also the first Ethereum's token standard as well.

It is also important that the original ERC20 proposal is a definition of token interface. EIP20 does not define a reference implementation for this token standard. Here is OpenZeppelin implementation of ERC20 token: https://github.com/OpenZeppelin/zeppelin-solidity/tree/master/contracts/token/ERC20

ERC20 token standard implementation assumes two ways of token transferring: (1) transfer function and (2) approve + transferFrom pattern.

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EMSCRIPTEN SETUP

https://github.com/juj/emsdk @ 2324e5d8

• LLVM_CMAKE_ARGS="-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly" emsdk install sdk-tag-1.37.28-64bit (be patient!)

To activate correct paths for emscripten and dependencies use:

• ./emsdk activate sdk-tag-1.37.28-64bit
• ./emsdk_env.sh

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import asyncio

@asyncio.coroutine
def waiting(r):
    print("hello from waiting -", r)
    yield from asyncio.sleep(2)
    print("bye from waiting -", r)
    return r