From 6e2cb00008cbf09e556b00f87603797fcaa47e09 Mon Sep 17 00:00:00 2001 From: Christopher Speller Date: Mon, 16 Apr 2018 05:37:14 -0700 Subject: Depenancy upgrades and movign to dep. (#8630) --- vendor/golang.org/x/crypto/openpgp/write.go | 378 ---------------------------- 1 file changed, 378 deletions(-) delete mode 100644 vendor/golang.org/x/crypto/openpgp/write.go (limited to 'vendor/golang.org/x/crypto/openpgp/write.go') diff --git a/vendor/golang.org/x/crypto/openpgp/write.go b/vendor/golang.org/x/crypto/openpgp/write.go deleted file mode 100644 index 65a304cc8..000000000 --- a/vendor/golang.org/x/crypto/openpgp/write.go +++ /dev/null @@ -1,378 +0,0 @@ -// 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 openpgp - -import ( - "crypto" - "hash" - "io" - "strconv" - "time" - - "golang.org/x/crypto/openpgp/armor" - "golang.org/x/crypto/openpgp/errors" - "golang.org/x/crypto/openpgp/packet" - "golang.org/x/crypto/openpgp/s2k" -) - -// DetachSign signs message with the private key from signer (which must -// already have been decrypted) and writes the signature to w. -// If config is nil, sensible defaults will be used. -func DetachSign(w io.Writer, signer *Entity, message io.Reader, config *packet.Config) error { - return detachSign(w, signer, message, packet.SigTypeBinary, config) -} - -// ArmoredDetachSign signs message with the private key from signer (which -// must already have been decrypted) and writes an armored signature to w. -// If config is nil, sensible defaults will be used. -func ArmoredDetachSign(w io.Writer, signer *Entity, message io.Reader, config *packet.Config) (err error) { - return armoredDetachSign(w, signer, message, packet.SigTypeBinary, config) -} - -// DetachSignText signs message (after canonicalising the line endings) with -// the private key from signer (which must already have been decrypted) and -// writes the signature to w. -// If config is nil, sensible defaults will be used. -func DetachSignText(w io.Writer, signer *Entity, message io.Reader, config *packet.Config) error { - return detachSign(w, signer, message, packet.SigTypeText, config) -} - -// ArmoredDetachSignText signs message (after canonicalising the line endings) -// with the private key from signer (which must already have been decrypted) -// and writes an armored signature to w. -// If config is nil, sensible defaults will be used. -func ArmoredDetachSignText(w io.Writer, signer *Entity, message io.Reader, config *packet.Config) error { - return armoredDetachSign(w, signer, message, packet.SigTypeText, config) -} - -func armoredDetachSign(w io.Writer, signer *Entity, message io.Reader, sigType packet.SignatureType, config *packet.Config) (err error) { - out, err := armor.Encode(w, SignatureType, nil) - if err != nil { - return - } - err = detachSign(out, signer, message, sigType, config) - if err != nil { - return - } - return out.Close() -} - -func detachSign(w io.Writer, signer *Entity, message io.Reader, sigType packet.SignatureType, config *packet.Config) (err error) { - if signer.PrivateKey == nil { - return errors.InvalidArgumentError("signing key doesn't have a private key") - } - if signer.PrivateKey.Encrypted { - return errors.InvalidArgumentError("signing key is encrypted") - } - - sig := new(packet.Signature) - sig.SigType = sigType - sig.PubKeyAlgo = signer.PrivateKey.PubKeyAlgo - sig.Hash = config.Hash() - sig.CreationTime = config.Now() - sig.IssuerKeyId = &signer.PrivateKey.KeyId - - h, wrappedHash, err := hashForSignature(sig.Hash, sig.SigType) - if err != nil { - return - } - io.Copy(wrappedHash, message) - - err = sig.Sign(h, signer.PrivateKey, config) - if err != nil { - return - } - - return sig.Serialize(w) -} - -// FileHints contains metadata about encrypted files. This metadata is, itself, -// encrypted. -type FileHints struct { - // IsBinary can be set to hint that the contents are binary data. - IsBinary bool - // FileName hints at the name of the file that should be written. It's - // truncated to 255 bytes if longer. It may be empty to suggest that the - // file should not be written to disk. It may be equal to "_CONSOLE" to - // suggest the data should not be written to disk. - FileName string - // ModTime contains the modification time of the file, or the zero time if not applicable. - ModTime time.Time -} - -// SymmetricallyEncrypt acts like gpg -c: it encrypts a file with a passphrase. -// The resulting WriteCloser must be closed after the contents of the file have -// been written. -// If config is nil, sensible defaults will be used. -func SymmetricallyEncrypt(ciphertext io.Writer, passphrase []byte, hints *FileHints, config *packet.Config) (plaintext io.WriteCloser, err error) { - if hints == nil { - hints = &FileHints{} - } - - key, err := packet.SerializeSymmetricKeyEncrypted(ciphertext, passphrase, config) - if err != nil { - return - } - w, err := packet.SerializeSymmetricallyEncrypted(ciphertext, config.Cipher(), key, config) - if err != nil { - return - } - - literaldata := w - if algo := config.Compression(); algo != packet.CompressionNone { - var compConfig *packet.CompressionConfig - if config != nil { - compConfig = config.CompressionConfig - } - literaldata, err = packet.SerializeCompressed(w, algo, compConfig) - if err != nil { - return - } - } - - var epochSeconds uint32 - if !hints.ModTime.IsZero() { - epochSeconds = uint32(hints.ModTime.Unix()) - } - return packet.SerializeLiteral(literaldata, hints.IsBinary, hints.FileName, epochSeconds) -} - -// intersectPreferences mutates and returns a prefix of a that contains only -// the values in the intersection of a and b. The order of a is preserved. -func intersectPreferences(a []uint8, b []uint8) (intersection []uint8) { - var j int - for _, v := range a { - for _, v2 := range b { - if v == v2 { - a[j] = v - j++ - break - } - } - } - - return a[:j] -} - -func hashToHashId(h crypto.Hash) uint8 { - v, ok := s2k.HashToHashId(h) - if !ok { - panic("tried to convert unknown hash") - } - return v -} - -// Encrypt encrypts a message to a number of recipients and, optionally, signs -// it. hints contains optional information, that is also encrypted, that aids -// the recipients in processing the message. The resulting WriteCloser must -// be closed after the contents of the file have been written. -// If config is nil, sensible defaults will be used. -func Encrypt(ciphertext io.Writer, to []*Entity, signed *Entity, hints *FileHints, config *packet.Config) (plaintext io.WriteCloser, err error) { - var signer *packet.PrivateKey - if signed != nil { - signKey, ok := signed.signingKey(config.Now()) - if !ok { - return nil, errors.InvalidArgumentError("no valid signing keys") - } - signer = signKey.PrivateKey - if signer == nil { - return nil, errors.InvalidArgumentError("no private key in signing key") - } - if signer.Encrypted { - return nil, errors.InvalidArgumentError("signing key must be decrypted") - } - } - - // These are the possible ciphers that we'll use for the message. - candidateCiphers := []uint8{ - uint8(packet.CipherAES128), - uint8(packet.CipherAES256), - uint8(packet.CipherCAST5), - } - // These are the possible hash functions that we'll use for the signature. - candidateHashes := []uint8{ - hashToHashId(crypto.SHA256), - hashToHashId(crypto.SHA512), - hashToHashId(crypto.SHA1), - hashToHashId(crypto.RIPEMD160), - } - // In the event that a recipient doesn't specify any supported ciphers - // or hash functions, these are the ones that we assume that every - // implementation supports. - defaultCiphers := candidateCiphers[len(candidateCiphers)-1:] - defaultHashes := candidateHashes[len(candidateHashes)-1:] - - encryptKeys := make([]Key, len(to)) - for i := range to { - var ok bool - encryptKeys[i], ok = to[i].encryptionKey(config.Now()) - if !ok { - return nil, errors.InvalidArgumentError("cannot encrypt a message to key id " + strconv.FormatUint(to[i].PrimaryKey.KeyId, 16) + " because it has no encryption keys") - } - - sig := to[i].primaryIdentity().SelfSignature - - preferredSymmetric := sig.PreferredSymmetric - if len(preferredSymmetric) == 0 { - preferredSymmetric = defaultCiphers - } - preferredHashes := sig.PreferredHash - if len(preferredHashes) == 0 { - preferredHashes = defaultHashes - } - candidateCiphers = intersectPreferences(candidateCiphers, preferredSymmetric) - candidateHashes = intersectPreferences(candidateHashes, preferredHashes) - } - - if len(candidateCiphers) == 0 || len(candidateHashes) == 0 { - return nil, errors.InvalidArgumentError("cannot encrypt because recipient set shares no common algorithms") - } - - cipher := packet.CipherFunction(candidateCiphers[0]) - // If the cipher specified by config is a candidate, we'll use that. - configuredCipher := config.Cipher() - for _, c := range candidateCiphers { - cipherFunc := packet.CipherFunction(c) - if cipherFunc == configuredCipher { - cipher = cipherFunc - break - } - } - - var hash crypto.Hash - for _, hashId := range candidateHashes { - if h, ok := s2k.HashIdToHash(hashId); ok && h.Available() { - hash = h - break - } - } - - // If the hash specified by config is a candidate, we'll use that. - if configuredHash := config.Hash(); configuredHash.Available() { - for _, hashId := range candidateHashes { - if h, ok := s2k.HashIdToHash(hashId); ok && h == configuredHash { - hash = h - break - } - } - } - - if hash == 0 { - hashId := candidateHashes[0] - name, ok := s2k.HashIdToString(hashId) - if !ok { - name = "#" + strconv.Itoa(int(hashId)) - } - return nil, errors.InvalidArgumentError("cannot encrypt because no candidate hash functions are compiled in. (Wanted " + name + " in this case.)") - } - - symKey := make([]byte, cipher.KeySize()) - if _, err := io.ReadFull(config.Random(), symKey); err != nil { - return nil, err - } - - for _, key := range encryptKeys { - if err := packet.SerializeEncryptedKey(ciphertext, key.PublicKey, cipher, symKey, config); err != nil { - return nil, err - } - } - - encryptedData, err := packet.SerializeSymmetricallyEncrypted(ciphertext, cipher, symKey, config) - if err != nil { - return - } - - if signer != nil { - ops := &packet.OnePassSignature{ - SigType: packet.SigTypeBinary, - Hash: hash, - PubKeyAlgo: signer.PubKeyAlgo, - KeyId: signer.KeyId, - IsLast: true, - } - if err := ops.Serialize(encryptedData); err != nil { - return nil, err - } - } - - if hints == nil { - hints = &FileHints{} - } - - w := encryptedData - if signer != nil { - // If we need to write a signature packet after the literal - // data then we need to stop literalData from closing - // encryptedData. - w = noOpCloser{encryptedData} - - } - var epochSeconds uint32 - if !hints.ModTime.IsZero() { - epochSeconds = uint32(hints.ModTime.Unix()) - } - literalData, err := packet.SerializeLiteral(w, hints.IsBinary, hints.FileName, epochSeconds) - if err != nil { - return nil, err - } - - if signer != nil { - return signatureWriter{encryptedData, literalData, hash, hash.New(), signer, config}, nil - } - return literalData, nil -} - -// signatureWriter hashes the contents of a message while passing it along to -// literalData. When closed, it closes literalData, writes a signature packet -// to encryptedData and then also closes encryptedData. -type signatureWriter struct { - encryptedData io.WriteCloser - literalData io.WriteCloser - hashType crypto.Hash - h hash.Hash - signer *packet.PrivateKey - config *packet.Config -} - -func (s signatureWriter) Write(data []byte) (int, error) { - s.h.Write(data) - return s.literalData.Write(data) -} - -func (s signatureWriter) Close() error { - sig := &packet.Signature{ - SigType: packet.SigTypeBinary, - PubKeyAlgo: s.signer.PubKeyAlgo, - Hash: s.hashType, - CreationTime: s.config.Now(), - IssuerKeyId: &s.signer.KeyId, - } - - if err := sig.Sign(s.h, s.signer, s.config); err != nil { - return err - } - if err := s.literalData.Close(); err != nil { - return err - } - if err := sig.Serialize(s.encryptedData); err != nil { - return err - } - return s.encryptedData.Close() -} - -// noOpCloser is like an ioutil.NopCloser, but for an io.Writer. -// TODO: we have two of these in OpenPGP packages alone. This probably needs -// to be promoted somewhere more common. -type noOpCloser struct { - w io.Writer -} - -func (c noOpCloser) Write(data []byte) (n int, err error) { - return c.w.Write(data) -} - -func (c noOpCloser) Close() error { - return nil -} -- cgit v1.2.3-1-g7c22