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SemVer)](https://img.shields.io/github/v/release/nspcc-dev/tzhash?sort=semver)\n![License](https://img.shields.io/github/license/nspcc-dev/tzhash.svg?style=popout)\n\n# Demo\n\n[![asciicast](https://asciinema.org/a/IArEDLTrQyabI3agSSpINoqNu.svg)](https://asciinema.org/a/IArEDLTrQyabI3agSSpINoqNu)\n\n**In project root:**\n\n```bash\n# show help\nmake\n# run auto demo\nmake auto\n```\n\n# Homomorphic hashing in golang\n\nPackage `tz` containts pure-Go implementation of hashing function described by Tillich and Źemor in [1] .\n\nThere are existing implementations already (e.g. [2]), however they are written in C.\n\nPackage `gf127` contains arithmetic in `GF(2^127)` with `x^127+x^63+1` as reduction polynomial.\n\n# Description\n\nIt can be used instead of Merkle-tree for data-validation, because homomorphic hashes\nare concatenable: hash sum of data can be calculated based on hashes of chunks.\n\nThe example of how it works can be seen in tests.\n\n# Benchmarks\n\n## go vs AVX vs AVX2 version\n\n```\nBenchmarkSum/AVX_digest-8             308       3889484 ns/op          25.71 MB/s         5 allocs/op\nBenchmarkSum/AVXInline_digest-8       457       2455437 ns/op          40.73 MB/s         5 allocs/op\nBenchmarkSum/AVX2_digest-8            399       3031102 ns/op          32.99 MB/s         3 allocs/op\nBenchmarkSum/AVX2Inline_digest-8      602       2077719 ns/op          48.13 MB/s         3 allocs/op\nBenchmarkSum/PureGo_digest-8           68       17795480 ns/op          5.62 MB/s         5 allocs/op\n```\n\n# Contributing\n\nAt this moment, we do not accept contributions. Follow us.\n\n# Makefile\n\n```\n→ make\n  Usage:\n\n    make \u003ctarget\u003e\n\n  Targets:\n\n    attach   Attach to existing container\n    auto     Auto Tillich-Zémor hasher demo\n    down     Stop demo container\n    help     Show this help prompt\n    up       Run Tillich-Zémor hasher demo\n```\n\n# Links\n\n[1] https://link.springer.com/content/pdf/10.1007/3-540-48658-5_5.pdf\n\n[2] https://github.com/srijs/hwsl2-core","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnspcc-dev%2Ftzhash","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fnspcc-dev%2Ftzhash","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnspcc-dev%2Ftzhash/lists"}