https://github.com/ericlagergren/polyval

POLYVAL per RFC 8452
https://github.com/ericlagergren/polyval

galois-field gf128 ghash go polyval

Last synced: 4 months ago
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POLYVAL per RFC 8452

• Host: GitHub
• URL: https://github.com/ericlagergren/polyval
• Owner: ericlagergren
• License: bsd-2-clause
• Created: 2022-01-30T09:38:19.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2023-08-05T20:25:42.000Z (almost 3 years ago)
• Last Synced: 2024-06-18T22:59:04.590Z (almost 2 years ago)
• Topics: galois-field, gf128, ghash, go, polyval
• Language: Go
• Homepage:
• Size: 93.8 KB
• Stars: 8
• Watchers: 1
• Forks: 1
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# polyval

[![Go Reference](https://pkg.go.dev/badge/github.com/ericlagergren/polyval.svg)](https://pkg.go.dev/github.com/ericlagergren/polyval)

This module implements POLYVAL per [RFC 8452](https://datatracker.ietf.org/doc/html/rfc8452).

The universal hash function POLYVAL is the byte-wise reverse of

GHASH.

## Installation

```bash

go get github.com/ericlagergren/polyval@latest

```

## Performance

The x86-64 and ARMv8 assembly backends run at about 0.25 cycles

per byte. The x86-64 implementation requires SSE2 and PCLMULQDQ

instructions. The ARMv8 implementation requires NEON and PMULL.

The default Go implementation will be selected if the CPU does

not support either assembly implementation. (This implementation

can also be selected with the `purego` build tag.) It is much 

slower at around 9 cycles per byte.

## Security

### Disclosure

This project uses full disclosure. If you find a security bug in

an implementation, please e-mail me or create a GitHub issue.

### Disclaimer

You should only use cryptography libraries that have been

reviewed by cryptographers or cryptography engineers. While I am

a cryptography engineer, I'm not your cryptography engineer, and

I have not had this project reviewed by any other cryptographers.