// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package chacha20 implements the ChaCha20 and XChaCha20 encryption algorithms
// as specified in RFC 8439 and draft-irtf-cfrg-xchacha-01.
package chacha20

import (
	"crypto/cipher"
	"encoding/binary"
	"errors"
	"math/bits"

	"golang.org/x/crypto/internal/alias"
)

const (

Roland Shoemaker <******@****.***> 1715710936 -0700

Filippo Valsorda <******@****.***> 1684936196 +0200

pkg math/rand/v2, func Uint64N(uint64) uint64 #61716
pkg math/rand/v2, func UintN(uint) uint #61716
pkg math/rand/v2, method (*ChaCha8) MarshalBinary() ([]uint8, error) #61716
pkg math/rand/v2, method (*ChaCha8) Seed([32]uint8) #61716
pkg math/rand/v2, method (*ChaCha8) Uint64() uint64 #61716
pkg math/rand/v2, method (*ChaCha8) UnmarshalBinary([]uint8) error #61716
pkg math/rand/v2, method (*PCG) MarshalBinary() ([]uint8, error) #61716

The new [ChaCha8.Read] method implements the [io.Reader] interface....

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package chacha20poly1305

import (
	"encoding/binary"

	"golang.org/x/crypto/chacha20"
	"golang.org/x/crypto/internal/alias"
	"golang.org/x/crypto/internal/poly1305"
)

func writeWithPadding(p *poly1305.MAC, b []byte) {
	p.Write(b)
	if rem := len(b) % 16; rem != 0 {
		var buf [16]byte

// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build gc && !purego

package chacha20

const bufSize = 256

//go:noescape
func chaCha20_ctr32_vsx(out, inp *byte, len int, key *[8]uint32, counter *uint32)

func (c *Cipher) xorKeyStreamBlocks(dst, src []byte) {
	chaCha20_ctr32_vsx(&dst[0], &src[0], len(src), &c.key, &c.counter)

stdout ^vendor/golang\.org/x/net/http2/hpack
stdout ^cmd/vendor/golang\.org/x/arch/x86/x86asm
! stdout ^golang\.org/x/

# The dependencies of those packages should also be vendored.
go list -deps vendor/golang.org/x/crypto/chacha20
stdout ^vendor/golang\.org/x/crypto/internal/alias

# cmd/... should match the same packages it used to match in GOPATH mode.
go list cmd/...
stdout ^cmd/compile
! stdout ^cmd/vendor/golang\.org/x/arch/x86/x86asm

// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package chacha20poly1305 implements the ChaCha20-Poly1305 AEAD and its
// extended nonce variant XChaCha20-Poly1305, as specified in RFC 8439 and
// draft-irtf-cfrg-xchacha-01.
package chacha20poly1305 // import "golang.org/x/crypto/chacha20poly1305"

import (
	"crypto/cipher"
	"errors"
)

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build gc && !purego

package chacha20

const bufSize = 256

//go:noescape
func xorKeyStreamVX(dst, src []byte, key *[8]uint32, nonce *[3]uint32, counter *uint32)

func (c *Cipher) xorKeyStreamBlocks(dst, src []byte) {
	xorKeyStreamVX(dst, src, &c.key, &c.nonce, &c.counter)