:city_sunrise: Discohash

#### 2 - 5 GB/s, passed SMHasher  !npm downloads

Discohash (also known as BEBB4185) is a super-fast hash that passes all of SMHasher, and runs at 2 - 5 GB/s (depending on hardware) in this naive, portable implementation.

CLI app included

------

Quick Facts

- A super-fast 64-bit hash.
- Tested at ~ 5GB/s @ 3Gz.
- Passes all SMHasher tests.
- Also known as: BEBB4185
- Implemented in C++, and also a port to JS
- This repo includes a simple CLI app for hashing files or stdin from the command line.

Using

Use the C code from this repository, either in your project or as a CL-app (included):

``console
cd src
./build.sh
./bin/bebbsum < 0xa2a647993898a3df.txt
> 0xa2a647993898a3df
./bin/bebbsum 0xa2a647993898a3df.txt
> 0xa2a647993898a3df
`

or, for a JS implementation:

`console
npm i --save bebb4185
`

Use in Node.JS:

`js
import {discohash} from 'bebb4185'
`

Or using Snowpack as a webmodule:

`js
import {discohash} from './web_modules/bebb4185.js';
`

Then call it:

`js
const hash = discohash(string_or_typed_array_key, optional_seed);
`

JS Implementation

- The JS Implementation produces the same value hashes as the C++ implementation.
- The JS implementation is ~ 500x slower than the C++ implementation.
- This is probably because of the use of BigInts to stand in for uint64_t
- It's possible to implement a 64-bit mult using 32-bit view which would remove the need for BigInt. I have no plan to do this.

SMHasher verification value

The value is: BEBB4185`

Possible future work

Make a parallel version using Merkle tree