Deprecated: This is a legacy implementation. New users should use aead/chacha20 instead.
An AVX/AVX2/x64/pure-Go implementation of the ChaCha20 stream cipher for Golang.
The AVX and AVX2 ChaCha20 implementations were taken from cloudflare/sslconfig.
The x64 ChaCha20 implementations was taken from the public domain sources in SUPERCOP.
The pure Go ChaCha20 implementation was taken from codahale/chacha20.
BenchmarkChaCha20Codahale/1M-8 200 5951390 ns/op 176.19 MB/s [codahale/chacha20] BenchmarkChaCha20AEAD/1M-8 2000 771361 ns/op 1359.38 MB/s [aead/chacha20] BenchmarkChaCha20Go/1M-8 300 5638541 ns/op 185.97 MB/s [tmthrgd/chacha20/internal/ref] BenchmarkChaCha20x64/1M-8 2000 927749 ns/op 1130.24 MB/s [tmthrgd/chacha20] BenchmarkChaCha20AVX/1M-8 2000 730687 ns/op 1435.05 MB/s [tmthrgd/chacha20] BenchmarkAESCTR/1M-8 500 2600296 ns/op 403.25 MB/s [crypto/aes crypto/cipher] BenchmarkAESGCM/1M-8 2000 864448 ns/op 1213.00 MB/s [crypto/aes crypto/cipher] BenchmarkRC4/1M-8 1000 1332092 ns/op 787.16 MB/s [crypto/rc4]
Unless otherwise noted, the chacha20 source files are distributed under the Modified BSD License found in the LICENSE file.
This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit (http://www.openssl.org/)