Filippo Valsorda
f792edd33d
The XChaCha20 construction does not have an authoritative spec, but this implementation is based on the following documents: https://cr.yp.to/snuffle/xsalsa-20081128.pdf https://download.libsodium.org/doc/secret-key_cryptography/aead.html http://loup-vaillant.fr/tutorials/chacha20-design https://tools.ietf.org/html/draft-paragon-paseto-rfc-00#section-7 Tested against the following implementations: https://github.com/jedisct1/libsodium/blob/7cdf3f0e841/test/default/aead_xchacha20poly1305.c https://git.kernel.org/pub/scm/linux/kernel/git/zx2c4/linux.git/diff/lib/zinc/selftest/chacha20poly1305.h?h=zinc https://git.zx2c4.com/wireguard-go/tree/xchacha20poly1305/xchacha20.go name time/op speed Chacha20Poly1305/Open-64-8 225ns ± 1% 283MB/s ± 1% Chacha20Poly1305/Open-64-X-8 390ns ± 0% 164MB/s ± 0% Chacha20Poly1305/Seal-64-8 222ns ± 0% 287MB/s ± 0% Chacha20Poly1305/Seal-64-X-8 386ns ± 0% 165MB/s ± 1% Chacha20Poly1305/Open-1350-8 1.12µs ± 1% 1.21GB/s ± 1% Chacha20Poly1305/Open-1350-X-8 1.28µs ± 0% 1.05GB/s ± 0% Chacha20Poly1305/Seal-1350-8 1.15µs ± 0% 1.17GB/s ± 0% Chacha20Poly1305/Seal-1350-X-8 1.32µs ± 1% 1.02GB/s ± 0% Chacha20Poly1305/Open-8192-8 5.53µs ± 0% 1.48GB/s ± 0% Chacha20Poly1305/Open-8192-X-8 5.71µs ± 1% 1.44GB/s ± 1% Chacha20Poly1305/Seal-8192-8 5.54µs ± 1% 1.48GB/s ± 1% Chacha20Poly1305/Seal-8192-X-8 5.74µs ± 1% 1.43GB/s ± 1% Updates golang/go#24485 Change-Id: Iea6f3b4c2be67f16f56720a200dcc895c0f9d520 Reviewed-on: https://go-review.googlesource.com/127819 Run-TryBot: Filippo Valsorda <filippo@golang.org> Reviewed-by: Adam Langley <agl@golang.org>
Go Cryptography
This repository holds supplementary Go cryptography libraries.
Download/Install
The easiest way to install is to run go get -u golang.org/x/crypto/.... You
can also manually git clone the repository to $GOPATH/src/golang.org/x/crypto.
Report Issues / Send Patches
This repository uses Gerrit for code changes. To learn how to submit changes to this repository, see https://golang.org/doc/contribute.html.
The main issue tracker for the crypto repository is located at https://github.com/golang/go/issues. Prefix your issue with "x/crypto:" in the subject line, so it is easy to find.
Note that contributions to the cryptography package receive additional scrutiny due to their sensitive nature. Patches may take longer than normal to receive feedback.