tzhash/README.md

64 lines
1.5 KiB
Markdown
Raw Normal View History

2018-12-29 13:04:17 +00:00
# Demo
[![asciicast](https://asciinema.org/a/IArEDLTrQyabI3agSSpINoqNu.svg)](https://asciinema.org/a/IArEDLTrQyabI3agSSpINoqNu)
**In project root:**
```bash
# show help
make
# run auto demo
make auto
```
# Homomorphic hashing in golang
Package `tz` containts pure-Go implementation of hashing function described by Tillich and Źemor in [1] .
2018-12-29 13:04:17 +00:00
There are existing implementations already (e.g. [2]), however they are written in C.
2018-12-29 13:04:17 +00:00
Package `gf127` contains arithmetic in `GF(2^127)` with `x^127+x^63+1` as reduction polynomial.
2018-12-29 13:04:17 +00:00
# Description
It can be used instead of Merkle-tree for data-validation, because homomorphic hashes
are concatenable: hash sum of data can be calculated based on hashes of chunks.
2018-12-29 13:04:17 +00:00
The example of how it works can be seen in tests.
2019-06-24 07:33:00 +00:00
# Benchmarks
## AVX vs AVX2 version
```
BenchmarkAVX-8 500 3492019 ns/op 28.64 MB/s 64 B/op 4 allocs/op
BenchmarkAVX2-8 500 2752693 ns/op 36.33 MB/s 64 B/op 2 allocs/op
BenchmarkAVX2Inline-8 1000 1877260 ns/op 53.27 MB/s 64 B/op 2 allocs/op
2019-06-24 07:33:00 +00:00
```
2018-12-29 13:04:17 +00:00
# Contributing
At this moment, we do not accept contributions. Follow us.
# Makefile
```
→ make
Usage:
make <target>
Targets:
attach Attach to existing container
auto Auto Tillich-Zémor hasher demo
down Stop demo container
help Show this help prompt
up Run Tillich-Zémor hasher demo
```
# Links
[1] https://link.springer.com/content/pdf/10.1007/3-540-48658-5_5.pdf
[2] https://github.com/srijs/hwsl2-core