jochen
be92762969
The live tests reached one shared bus and assert, read and remove the mesh's own objects by their fixed names, so packages run in parallel deleted what each other read and the suite passed only one package at a time; a red suite read as noise. internal/testbus starts a server per test, linked in at the nats-server release go.mod pins, and a test holds that pin to the catalogue's bus image and to the facts snapshot's bus when there is one, so the tests never run a bus the mesh does not. The waiter test read a timing (the most connections held at one look) and now reads the state it means (the fewest held across the wait). make check runs the packages in parallel under the race detector, with a timeout.
93 lines
2.7 KiB
Go
93 lines
2.7 KiB
Go
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build gc && !purego
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package chacha20poly1305
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import (
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"encoding/binary"
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"golang.org/x/crypto/internal/alias"
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"golang.org/x/sys/cpu"
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)
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//go:noescape
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func chacha20Poly1305Open(dst []byte, key []uint32, src, ad []byte) bool
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//go:noescape
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func chacha20Poly1305Seal(dst []byte, key []uint32, src, ad []byte)
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var (
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useAVX2 = cpu.X86.HasSSSE3 && cpu.X86.HasAVX2 && cpu.X86.HasBMI2
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)
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// setupState writes a ChaCha20 input matrix to state. See
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// https://tools.ietf.org/html/rfc7539#section-2.3.
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func setupState(state *[16]uint32, key *[32]byte, nonce []byte) {
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state[0] = 0x61707865
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state[1] = 0x3320646e
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state[2] = 0x79622d32
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state[3] = 0x6b206574
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state[4] = binary.LittleEndian.Uint32(key[0:4])
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state[5] = binary.LittleEndian.Uint32(key[4:8])
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state[6] = binary.LittleEndian.Uint32(key[8:12])
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state[7] = binary.LittleEndian.Uint32(key[12:16])
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state[8] = binary.LittleEndian.Uint32(key[16:20])
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state[9] = binary.LittleEndian.Uint32(key[20:24])
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state[10] = binary.LittleEndian.Uint32(key[24:28])
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state[11] = binary.LittleEndian.Uint32(key[28:32])
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state[12] = 0
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state[13] = binary.LittleEndian.Uint32(nonce[0:4])
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state[14] = binary.LittleEndian.Uint32(nonce[4:8])
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state[15] = binary.LittleEndian.Uint32(nonce[8:12])
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}
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func (c *chacha20poly1305) seal(dst, nonce, plaintext, additionalData []byte) []byte {
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if !useAVX2 {
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return c.sealGeneric(dst, nonce, plaintext, additionalData)
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}
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var state [16]uint32
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setupState(&state, &c.key, nonce)
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ret, out := sliceForAppend(dst, len(plaintext)+16)
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if alias.InexactOverlap(out, plaintext) {
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panic("chacha20poly1305: invalid buffer overlap of output and input")
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}
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if alias.AnyOverlap(out, additionalData) {
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panic("chacha20poly1305: invalid buffer overlap of output and additional data")
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}
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chacha20Poly1305Seal(out[:], state[:], plaintext, additionalData)
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return ret
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}
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func (c *chacha20poly1305) open(dst, nonce, ciphertext, additionalData []byte) ([]byte, error) {
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if !useAVX2 {
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return c.openGeneric(dst, nonce, ciphertext, additionalData)
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}
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var state [16]uint32
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setupState(&state, &c.key, nonce)
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ciphertext = ciphertext[:len(ciphertext)-16]
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ret, out := sliceForAppend(dst, len(ciphertext))
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if alias.InexactOverlap(out, ciphertext) {
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panic("chacha20poly1305: invalid buffer overlap of output and input")
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}
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if alias.AnyOverlap(out, additionalData) {
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panic("chacha20poly1305: invalid buffer overlap of output and additional data")
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}
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if !chacha20Poly1305Open(out, state[:], ciphertext, additionalData) {
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for i := range out {
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out[i] = 0
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}
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return nil, errOpen
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}
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return ret, nil
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}
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