mirror of
https://github.com/caddyserver/caddy.git
synced 2024-12-30 22:34:15 -05:00
dfbc2e81e3
quic-go now vendors all of its dependencies, so we don't need to vendor them here. Created by running: gvt delete github.com/lucas-clemente/quic-go gvt delete github.com/bifurcation/mint gvt delete github.com/lucas-clemente/aes12 gvt delete github.com/lucas-clemente/fnv128a gvt delete github.com/lucas-clemente/quic-go-certificates gvt delete github.com/aead/chacha20 gvt delete github.com/hashicorp/golang-lru gvt fetch -tag v0.10.0-no-integrationtests github.com/lucas-clemente/quic-go
60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
// Copyright (c) 2016 Andreas Auernhammer. All rights reserved.
|
|
// Use of this source code is governed by a license that can be
|
|
// found in the LICENSE file.
|
|
|
|
// +build 386,!gccgo,!appengine,!nacl
|
|
|
|
package chacha
|
|
|
|
import (
|
|
"encoding/binary"
|
|
|
|
"golang.org/x/sys/cpu"
|
|
)
|
|
|
|
func init() {
|
|
useSSE2 = cpu.X86.HasSSE2
|
|
useSSSE3 = cpu.X86.HasSSSE3
|
|
useAVX = false
|
|
useAVX2 = false
|
|
}
|
|
|
|
func initialize(state *[64]byte, key []byte, nonce *[16]byte) {
|
|
binary.LittleEndian.PutUint32(state[0:], sigma[0])
|
|
binary.LittleEndian.PutUint32(state[4:], sigma[1])
|
|
binary.LittleEndian.PutUint32(state[8:], sigma[2])
|
|
binary.LittleEndian.PutUint32(state[12:], sigma[3])
|
|
copy(state[16:], key[:])
|
|
copy(state[48:], nonce[:])
|
|
}
|
|
|
|
// This function is implemented in chacha_386.s
|
|
//go:noescape
|
|
func hChaCha20SSE2(out *[32]byte, nonce *[16]byte, key *[32]byte)
|
|
|
|
// This function is implemented in chacha_386.s
|
|
//go:noescape
|
|
func hChaCha20SSSE3(out *[32]byte, nonce *[16]byte, key *[32]byte)
|
|
|
|
// This function is implemented in chacha_386.s
|
|
//go:noescape
|
|
func xorKeyStreamSSE2(dst, src []byte, block, state *[64]byte, rounds int) int
|
|
|
|
func hChaCha20(out *[32]byte, nonce *[16]byte, key *[32]byte) {
|
|
switch {
|
|
case useSSSE3:
|
|
hChaCha20SSSE3(out, nonce, key)
|
|
case useSSE2:
|
|
hChaCha20SSE2(out, nonce, key)
|
|
default:
|
|
hChaCha20Generic(out, nonce, key)
|
|
}
|
|
}
|
|
|
|
func xorKeyStream(dst, src []byte, block, state *[64]byte, rounds int) int {
|
|
if useSSE2 {
|
|
return xorKeyStreamSSE2(dst, src, block, state, rounds)
|
|
} else {
|
|
return xorKeyStreamGeneric(dst, src, block, state, rounds)
|
|
}
|
|
}
|