https://github.com/aead/chacha20poly1305

ChaCha20Poly1305 and XChaCha20Poly1305 AEAD implementations
https://github.com/aead/chacha20poly1305

chacha20-poly1305 cryptography golang

Last synced: 19 days ago
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ChaCha20Poly1305 and XChaCha20Poly1305 AEAD implementations

• Host: GitHub
• URL: https://github.com/aead/chacha20poly1305
• Owner: aead
• License: mit
• Created: 2017-02-20T18:38:18.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2020-11-24T14:56:23.000Z (almost 4 years ago)
• Last Synced: 2024-10-13T20:43:47.801Z (about 1 month ago)
• Topics: chacha20-poly1305, cryptography, golang
• Language: Go
• Size: 17.6 KB
• Stars: 13
• Watchers: 5
• Forks: 4
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# Chacha20Poly1305

This repository implements the ChaCha20Poly1305 AEAD construction. ChaCha20Pol1305 is combination

of the [ChaCha20 stream cipher](https://github.com/aead/chacha20) and the [Poly1305 authenticator](https://github.com/aead/poly1305) and is standardized in [RFC 7539](https://tools.ietf.org/html/rfc7539).

This repository also implements 8 and 24 byte variants additional to the IETF 12 byte version of ChaCha20Poly1305. Further this package provides a streaming API to wrap an [io.Writer](https://golang.org/pkg/io/#Writer) with an en/decrypting [io.WriteCloser](https://golang.org/pkg/io/#WriteCloser). 

### Recommendations

It is recommended to use the [official Chacha20Poly1305 implementation](https://godoc.org/golang.org/x/crypto/chacha20poly1305) if possible.  

This repository just provides additional functionality like 8 and 24 byte variants and a streaming API.

### Install

Install in your GOPATH: `go get -u github.com/aead/chacha20poly1305`  

Please notice, that the amd64 AVX2 asm implementation requires go1.7 or newer.

### Performance

**AMD64**  

Hardware: Intel i7-6500U 2.50GHz x 2  

System: Linux Ubuntu 16.04 - kernel: 4.8.0-54-generic  

Go version: 1.8.1

```

AVX2

name                       speed                cpb

Chacha20Poly1305Open_64-4   131MB/s ± 0%        18.20

Chacha20Poly1305Seal_64-4   134MB/s ± 0%        17.79

Chacha20Poly1305Open_1K-4   830MB/s ± 0%         2.87

Chacha20Poly1305Seal_1K-4   839MB/s ± 0%         2.84

Chacha20Poly1305Open_8K-4  1.15GB/s ± 0%         2.03

Chacha20Poly1305Seal_8K-4  1.15GB/s ± 0%         2.03

EncryptedWriter64-4         392MB/s ± 0%         6.08

DecryptedWriter64-4         255MB/s ± 0%         9.35

EncryptedWriter1K-4        1.97GB/s ± 1%         1.18

DecryptedWriter1K-4        1.70GB/s ± 0%         1.37

EncryptedWriter8K-4        2.23GB/s ± 0%         1.04

DecryptedWriter8K-4        2.17GB/s ± 1%         1.07

SSSE3

name                       speed                cpb

Chacha20Poly1305Open_64-4   133MB/s ± 1%        17.93

Chacha20Poly1305Seal_64-4   137MB/s ± 0%        17.40

Chacha20Poly1305Open_1K-4   626MB/s ± 0%         3.80

Chacha20Poly1305Seal_1K-4   629MB/s ± 0%         3.79

Chacha20Poly1305Open_8K-4   788MB/s ± 0%         3.03

Chacha20Poly1305Seal_8K-4   790MB/s ± 0%         3.02

EncryptedWriter64-4         397MB/s ± 0%         6.01

DecryptedWriter64-4         263MB/s ± 1%         9.07

EncryptedWriter1K-4        1.10GB/s ± 1%         2.12

DecryptedWriter1K-4        1.01GB/s ± 1%         2.31 

EncryptedWriter8K-4        1.18GB/s ± 0%         1.97

DecryptedWriter8K-4        1.16GB/s ± 0%         2.01

```