66 lines
No EOL
1.8 KiB
Markdown
66 lines
No EOL
1.8 KiB
Markdown
# Demo
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[](https://asciinema.org/a/IArEDLTrQyabI3agSSpINoqNu)
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**In project root:**
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```bash
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# show help
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make
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# run auto demo
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make auto
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```
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# Homomorphic hashing in golang
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Package `tz` containts pure-Go implementation of hashing function described by Tillich and Źemor in [1] .
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There are existing implementations already (e.g. [2]), however they are written in C.
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Package `gf127` contains arithmetic in `GF(2^127)` with `x^127+x^63+1` as reduction polynomial.
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# Description
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It can be used instead of Merkle-tree for data-validation, because homomorphic hashes
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are concatenable: hash sum of data can be calculated based on hashes of chunks.
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The example of how it works can be seen in tests.
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# Benchmarks
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## go vs AVX vs AVX2 version
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```
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BenchmarkSum/AVX_digest-8 308 3889484 ns/op 25.71 MB/s 5 allocs/op
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BenchmarkSum/AVXInline_digest-8 457 2455437 ns/op 40.73 MB/s 5 allocs/op
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BenchmarkSum/AVX2_digest-8 399 3031102 ns/op 32.99 MB/s 3 allocs/op
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BenchmarkSum/AVX2Inline_digest-8 602 2077719 ns/op 48.13 MB/s 3 allocs/op
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BenchmarkSum/PureGo_digest-8 68 17795480 ns/op 5.62 MB/s 5 allocs/op
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```
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# Contributing
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At this moment, we do not accept contributions. Follow us.
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# Makefile
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```
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→ make
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Usage:
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make <target>
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Targets:
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attach Attach to existing container
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auto Auto Tillich-Zémor hasher demo
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down Stop demo container
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help Show this help prompt
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up Run Tillich-Zémor hasher demo
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```
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# Links
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[1] https://link.springer.com/content/pdf/10.1007/3-540-48658-5_5.pdf
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[2] https://github.com/srijs/hwsl2-core |