chore: vendor

This commit is contained in:
2024-08-04 11:06:58 +02:00
parent 2a5985e44e
commit 04aec8232f
3557 changed files with 981078 additions and 1 deletions
.gitignore
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.gitignoreCODE_OF_CONDUCT.mdCOMPATIBILITY.mdCONTRIBUTING.mdEXTENDING.mdLICENSEMakefileREADME.mdSECURITY.mdblame.gocommon.go
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64.gozsysnum_linux_386.gozsysnum_linux_amd64.gozsysnum_linux_arm.gozsysnum_linux_arm64.gozsysnum_linux_loong64.gozsysnum_linux_mips.gozsysnum_linux_mips64.gozsysnum_linux_mips64le.gozsysnum_linux_mipsle.gozsysnum_linux_ppc.gozsysnum_linux_ppc64.gozsysnum_linux_ppc64le.gozsysnum_linux_riscv64.gozsysnum_linux_s390x.gozsysnum_linux_sparc64.gozsysnum_netbsd_386.gozsysnum_netbsd_amd64.gozsysnum_netbsd_arm.gozsysnum_netbsd_arm64.gozsysnum_openbsd_386.gozsysnum_openbsd_amd64.gozsysnum_openbsd_arm.gozsysnum_openbsd_arm64.gozsysnum_openbsd_mips64.gozsysnum_openbsd_ppc64.gozsysnum_openbsd_riscv64.gozsysnum_zos_s390x.goztypes_aix_ppc.goztypes_aix_ppc64.goztypes_darwin_amd64.goztypes_darwin_arm64.goztypes_dragonfly_amd64.goztypes_freebsd_386.goztypes_freebsd_amd64.goztypes_freebsd_arm.goztypes_freebsd_arm64.goztypes_freebsd_riscv64.goztypes_linux.goztypes_linux_386.goztypes_linux_amd64.goztypes_linux_arm.goztypes_linux_arm64.goztypes_linux_loong64.goztypes_linux_mips.goztypes_linux_mips64.goztypes_linux_mips64le.goztypes_linux_mipsle.goztypes_linux_ppc.goztypes_linux_ppc64.goztypes_linux_ppc64le.goztypes_linux_riscv64.goztypes_linux_s390x.goztypes_linux_sparc64.goztypes_netbsd_386.goztypes_netbsd_amd64.goztypes_netbsd_arm.goztypes_netbsd_arm64.goztypes_openbsd_386.goztypes_openbsd_amd64.goztypes_openbsd_arm.goztypes_openbsd_arm64.goztypes_openbsd_mips64.goztypes_openbsd_ppc64.goztypes_openbsd_riscv64.goztypes_solaris_amd64.goztypes_zos_s390x.go
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channelz
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modules.txt

@ -0,0 +1,551 @@
// Copyright 2011 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 packet implements parsing and serialization of OpenPGP packets, as
// specified in RFC 4880.
package packet // import "github.com/ProtonMail/go-crypto/openpgp/packet"
import (
"bytes"
"crypto/cipher"
"crypto/rsa"
"io"
"github.com/ProtonMail/go-crypto/openpgp/errors"
"github.com/ProtonMail/go-crypto/openpgp/internal/algorithm"
)
// readFull is the same as io.ReadFull except that reading zero bytes returns
// ErrUnexpectedEOF rather than EOF.
func readFull(r io.Reader, buf []byte) (n int, err error) {
n, err = io.ReadFull(r, buf)
if err == io.EOF {
err = io.ErrUnexpectedEOF
}
return
}
// readLength reads an OpenPGP length from r. See RFC 4880, section 4.2.2.
func readLength(r io.Reader) (length int64, isPartial bool, err error) {
var buf [4]byte
_, err = readFull(r, buf[:1])
if err != nil {
return
}
switch {
case buf[0] < 192:
length = int64(buf[0])
case buf[0] < 224:
length = int64(buf[0]-192) << 8
_, err = readFull(r, buf[0:1])
if err != nil {
return
}
length += int64(buf[0]) + 192
case buf[0] < 255:
length = int64(1) << (buf[0] & 0x1f)
isPartial = true
default:
_, err = readFull(r, buf[0:4])
if err != nil {
return
}
length = int64(buf[0])<<24 |
int64(buf[1])<<16 |
int64(buf[2])<<8 |
int64(buf[3])
}
return
}
// partialLengthReader wraps an io.Reader and handles OpenPGP partial lengths.
// The continuation lengths are parsed and removed from the stream and EOF is
// returned at the end of the packet. See RFC 4880, section 4.2.2.4.
type partialLengthReader struct {
r io.Reader
remaining int64
isPartial bool
}
func (r *partialLengthReader) Read(p []byte) (n int, err error) {
for r.remaining == 0 {
if !r.isPartial {
return 0, io.EOF
}
r.remaining, r.isPartial, err = readLength(r.r)
if err != nil {
return 0, err
}
}
toRead := int64(len(p))
if toRead > r.remaining {
toRead = r.remaining
}
n, err = r.r.Read(p[:int(toRead)])
r.remaining -= int64(n)
if n < int(toRead) && err == io.EOF {
err = io.ErrUnexpectedEOF
}
return
}
// partialLengthWriter writes a stream of data using OpenPGP partial lengths.
// See RFC 4880, section 4.2.2.4.
type partialLengthWriter struct {
w io.WriteCloser
buf bytes.Buffer
lengthByte [1]byte
}
func (w *partialLengthWriter) Write(p []byte) (n int, err error) {
bufLen := w.buf.Len()
if bufLen > 512 {
for power := uint(30); ; power-- {
l := 1 << power
if bufLen >= l {
w.lengthByte[0] = 224 + uint8(power)
_, err = w.w.Write(w.lengthByte[:])
if err != nil {
return
}
var m int
m, err = w.w.Write(w.buf.Next(l))
if err != nil {
return
}
if m != l {
return 0, io.ErrShortWrite
}
break
}
}
}
return w.buf.Write(p)
}
func (w *partialLengthWriter) Close() (err error) {
len := w.buf.Len()
err = serializeLength(w.w, len)
if err != nil {
return err
}
_, err = w.buf.WriteTo(w.w)
if err != nil {
return err
}
return w.w.Close()
}
// A spanReader is an io.LimitReader, but it returns ErrUnexpectedEOF if the
// underlying Reader returns EOF before the limit has been reached.
type spanReader struct {
r io.Reader
n int64
}
func (l *spanReader) Read(p []byte) (n int, err error) {
if l.n <= 0 {
return 0, io.EOF
}
if int64(len(p)) > l.n {
p = p[0:l.n]
}
n, err = l.r.Read(p)
l.n -= int64(n)
if l.n > 0 && err == io.EOF {
err = io.ErrUnexpectedEOF
}
return
}
// readHeader parses a packet header and returns an io.Reader which will return
// the contents of the packet. See RFC 4880, section 4.2.
func readHeader(r io.Reader) (tag packetType, length int64, contents io.Reader, err error) {
var buf [4]byte
_, err = io.ReadFull(r, buf[:1])
if err != nil {
return
}
if buf[0]&0x80 == 0 {
err = errors.StructuralError("tag byte does not have MSB set")
return
}
if buf[0]&0x40 == 0 {
// Old format packet
tag = packetType((buf[0] & 0x3f) >> 2)
lengthType := buf[0] & 3
if lengthType == 3 {
length = -1
contents = r
return
}
lengthBytes := 1 << lengthType
_, err = readFull(r, buf[0:lengthBytes])
if err != nil {
return
}
for i := 0; i < lengthBytes; i++ {
length <<= 8
length |= int64(buf[i])
}
contents = &spanReader{r, length}
return
}
// New format packet
tag = packetType(buf[0] & 0x3f)
length, isPartial, err := readLength(r)
if err != nil {
return
}
if isPartial {
contents = &partialLengthReader{
remaining: length,
isPartial: true,
r: r,
}
length = -1
} else {
contents = &spanReader{r, length}
}
return
}
// serializeHeader writes an OpenPGP packet header to w. See RFC 4880, section
// 4.2.
func serializeHeader(w io.Writer, ptype packetType, length int) (err error) {
err = serializeType(w, ptype)
if err != nil {
return
}
return serializeLength(w, length)
}
// serializeType writes an OpenPGP packet type to w. See RFC 4880, section
// 4.2.
func serializeType(w io.Writer, ptype packetType) (err error) {
var buf [1]byte
buf[0] = 0x80 | 0x40 | byte(ptype)
_, err = w.Write(buf[:])
return
}
// serializeLength writes an OpenPGP packet length to w. See RFC 4880, section
// 4.2.2.
func serializeLength(w io.Writer, length int) (err error) {
var buf [5]byte
var n int
if length < 192 {
buf[0] = byte(length)
n = 1
} else if length < 8384 {
length -= 192
buf[0] = 192 + byte(length>>8)
buf[1] = byte(length)
n = 2
} else {
buf[0] = 255
buf[1] = byte(length >> 24)
buf[2] = byte(length >> 16)
buf[3] = byte(length >> 8)
buf[4] = byte(length)
n = 5
}
_, err = w.Write(buf[:n])
return
}
// serializeStreamHeader writes an OpenPGP packet header to w where the
// length of the packet is unknown. It returns a io.WriteCloser which can be
// used to write the contents of the packet. See RFC 4880, section 4.2.
func serializeStreamHeader(w io.WriteCloser, ptype packetType) (out io.WriteCloser, err error) {
err = serializeType(w, ptype)
if err != nil {
return
}
out = &partialLengthWriter{w: w}
return
}
// Packet represents an OpenPGP packet. Users are expected to try casting
// instances of this interface to specific packet types.
type Packet interface {
parse(io.Reader) error
}
// consumeAll reads from the given Reader until error, returning the number of
// bytes read.
func consumeAll(r io.Reader) (n int64, err error) {
var m int
var buf [1024]byte
for {
m, err = r.Read(buf[:])
n += int64(m)
if err == io.EOF {
err = nil
return
}
if err != nil {
return
}
}
}
// packetType represents the numeric ids of the different OpenPGP packet types. See
// http://www.iana.org/assignments/pgp-parameters/pgp-parameters.xhtml#pgp-parameters-2
type packetType uint8
const (
packetTypeEncryptedKey packetType = 1
packetTypeSignature packetType = 2
packetTypeSymmetricKeyEncrypted packetType = 3
packetTypeOnePassSignature packetType = 4
packetTypePrivateKey packetType = 5
packetTypePublicKey packetType = 6
packetTypePrivateSubkey packetType = 7
packetTypeCompressed packetType = 8
packetTypeSymmetricallyEncrypted packetType = 9
packetTypeLiteralData packetType = 11
packetTypeUserId packetType = 13
packetTypePublicSubkey packetType = 14
packetTypeUserAttribute packetType = 17
packetTypeSymmetricallyEncryptedIntegrityProtected packetType = 18
packetTypeAEADEncrypted packetType = 20
)
// EncryptedDataPacket holds encrypted data. It is currently implemented by
// SymmetricallyEncrypted and AEADEncrypted.
type EncryptedDataPacket interface {
Decrypt(CipherFunction, []byte) (io.ReadCloser, error)
}
// Read reads a single OpenPGP packet from the given io.Reader. If there is an
// error parsing a packet, the whole packet is consumed from the input.
func Read(r io.Reader) (p Packet, err error) {
tag, _, contents, err := readHeader(r)
if err != nil {
return
}
switch tag {
case packetTypeEncryptedKey:
p = new(EncryptedKey)
case packetTypeSignature:
p = new(Signature)
case packetTypeSymmetricKeyEncrypted:
p = new(SymmetricKeyEncrypted)
case packetTypeOnePassSignature:
p = new(OnePassSignature)
case packetTypePrivateKey, packetTypePrivateSubkey:
pk := new(PrivateKey)
if tag == packetTypePrivateSubkey {
pk.IsSubkey = true
}
p = pk
case packetTypePublicKey, packetTypePublicSubkey:
isSubkey := tag == packetTypePublicSubkey
p = &PublicKey{IsSubkey: isSubkey}
case packetTypeCompressed:
p = new(Compressed)
case packetTypeSymmetricallyEncrypted:
p = new(SymmetricallyEncrypted)
case packetTypeLiteralData:
p = new(LiteralData)
case packetTypeUserId:
p = new(UserId)
case packetTypeUserAttribute:
p = new(UserAttribute)
case packetTypeSymmetricallyEncryptedIntegrityProtected:
se := new(SymmetricallyEncrypted)
se.IntegrityProtected = true
p = se
case packetTypeAEADEncrypted:
p = new(AEADEncrypted)
default:
err = errors.UnknownPacketTypeError(tag)
}
if p != nil {
err = p.parse(contents)
}
if err != nil {
consumeAll(contents)
}
return
}
// SignatureType represents the different semantic meanings of an OpenPGP
// signature. See RFC 4880, section 5.2.1.
type SignatureType uint8
const (
SigTypeBinary SignatureType = 0x00
SigTypeText = 0x01
SigTypeGenericCert = 0x10
SigTypePersonaCert = 0x11
SigTypeCasualCert = 0x12
SigTypePositiveCert = 0x13
SigTypeSubkeyBinding = 0x18
SigTypePrimaryKeyBinding = 0x19
SigTypeDirectSignature = 0x1F
SigTypeKeyRevocation = 0x20
SigTypeSubkeyRevocation = 0x28
SigTypeCertificationRevocation = 0x30
)
// PublicKeyAlgorithm represents the different public key system specified for
// OpenPGP. See
// http://www.iana.org/assignments/pgp-parameters/pgp-parameters.xhtml#pgp-parameters-12
type PublicKeyAlgorithm uint8
const (
PubKeyAlgoRSA PublicKeyAlgorithm = 1
PubKeyAlgoElGamal PublicKeyAlgorithm = 16
PubKeyAlgoDSA PublicKeyAlgorithm = 17
// RFC 6637, Section 5.
PubKeyAlgoECDH PublicKeyAlgorithm = 18
PubKeyAlgoECDSA PublicKeyAlgorithm = 19
// https://www.ietf.org/archive/id/draft-koch-eddsa-for-openpgp-04.txt
PubKeyAlgoEdDSA PublicKeyAlgorithm = 22
// Deprecated in RFC 4880, Section 13.5. Use key flags instead.
PubKeyAlgoRSAEncryptOnly PublicKeyAlgorithm = 2
PubKeyAlgoRSASignOnly PublicKeyAlgorithm = 3
)
// CanEncrypt returns true if it's possible to encrypt a message to a public
// key of the given type.
func (pka PublicKeyAlgorithm) CanEncrypt() bool {
switch pka {
case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoElGamal, PubKeyAlgoECDH:
return true
}
return false
}
// CanSign returns true if it's possible for a public key of the given type to
// sign a message.
func (pka PublicKeyAlgorithm) CanSign() bool {
switch pka {
case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly, PubKeyAlgoDSA, PubKeyAlgoECDSA, PubKeyAlgoEdDSA:
return true
}
return false
}
// CipherFunction represents the different block ciphers specified for OpenPGP. See
// http://www.iana.org/assignments/pgp-parameters/pgp-parameters.xhtml#pgp-parameters-13
type CipherFunction algorithm.CipherFunction
const (
Cipher3DES CipherFunction = 2
CipherCAST5 CipherFunction = 3
CipherAES128 CipherFunction = 7
CipherAES192 CipherFunction = 8
CipherAES256 CipherFunction = 9
)
// KeySize returns the key size, in bytes, of cipher.
func (cipher CipherFunction) KeySize() int {
return algorithm.CipherFunction(cipher).KeySize()
}
// IsSupported returns true if the cipher is supported from the library
func (cipher CipherFunction) IsSupported() bool {
return algorithm.CipherFunction(cipher).KeySize() > 0
}
// blockSize returns the block size, in bytes, of cipher.
func (cipher CipherFunction) blockSize() int {
return algorithm.CipherFunction(cipher).BlockSize()
}
// new returns a fresh instance of the given cipher.
func (cipher CipherFunction) new(key []byte) (block cipher.Block) {
return algorithm.CipherFunction(cipher).New(key)
}
// padToKeySize left-pads a MPI with zeroes to match the length of the
// specified RSA public.
func padToKeySize(pub *rsa.PublicKey, b []byte) []byte {
k := (pub.N.BitLen() + 7) / 8
if len(b) >= k {
return b
}
bb := make([]byte, k)
copy(bb[len(bb)-len(b):], b)
return bb
}
// CompressionAlgo Represents the different compression algorithms
// supported by OpenPGP (except for BZIP2, which is not currently
// supported). See Section 9.3 of RFC 4880.
type CompressionAlgo uint8
const (
CompressionNone CompressionAlgo = 0
CompressionZIP CompressionAlgo = 1
CompressionZLIB CompressionAlgo = 2
)
// AEADMode represents the different Authenticated Encryption with Associated
// Data specified for OpenPGP.
// See https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-07.html#section-9.6
type AEADMode algorithm.AEADMode
const (
AEADModeEAX AEADMode = 1
AEADModeOCB AEADMode = 2
AEADModeGCM AEADMode = 3
)
func (mode AEADMode) IvLength() int {
return algorithm.AEADMode(mode).NonceLength()
}
func (mode AEADMode) TagLength() int {
return algorithm.AEADMode(mode).TagLength()
}
// new returns a fresh instance of the given mode.
func (mode AEADMode) new(block cipher.Block) cipher.AEAD {
return algorithm.AEADMode(mode).New(block)
}
// ReasonForRevocation represents a revocation reason code as per RFC4880
// section 5.2.3.23.
type ReasonForRevocation uint8
const (
NoReason ReasonForRevocation = 0
KeySuperseded ReasonForRevocation = 1
KeyCompromised ReasonForRevocation = 2
KeyRetired ReasonForRevocation = 3
)
// Curve is a mapping to supported ECC curves for key generation.
// See https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-06.html#name-curve-specific-wire-formats
type Curve string
const (
Curve25519 Curve = "Curve25519"
Curve448 Curve = "Curve448"
CurveNistP256 Curve = "P256"
CurveNistP384 Curve = "P384"
CurveNistP521 Curve = "P521"
CurveSecP256k1 Curve = "SecP256k1"
CurveBrainpoolP256 Curve = "BrainpoolP256"
CurveBrainpoolP384 Curve = "BrainpoolP384"
CurveBrainpoolP512 Curve = "BrainpoolP512"
)
// TrustLevel represents a trust level per RFC4880 5.2.3.13
type TrustLevel uint8
// TrustAmount represents a trust amount per RFC4880 5.2.3.13
type TrustAmount uint8