1 files changed, 0 insertions, 376 deletions
diff --git a/vendor/golang.org/x/crypto/openpgp/clearsign/clearsign.go b/vendor/golang.org/x/crypto/openpgp/clearsign/clearsign.go
deleted file mode 100644
index def4cab..0000000
--- a/vendor/golang.org/x/crypto/openpgp/clearsign/clearsign.go
+++ /dev/null
@@ -1,376 +0,0 @@
-// Copyright 2012 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 clearsign generates and processes OpenPGP, clear-signed data. See
-// RFC 4880, section 7.
-//
-// Clearsigned messages are cryptographically signed, but the contents of the
-// message are kept in plaintext so that it can be read without special tools.
-package clearsign // import "golang.org/x/crypto/openpgp/clearsign"
-
-import (
-	"bufio"
-	"bytes"
-	"crypto"
-	"hash"
-	"io"
-	"net/textproto"
-	"strconv"
-
-	"golang.org/x/crypto/openpgp/armor"
-	"golang.org/x/crypto/openpgp/errors"
-	"golang.org/x/crypto/openpgp/packet"
-)
-
-// A Block represents a clearsigned message. A signature on a Block can
-// be checked by passing Bytes into openpgp.CheckDetachedSignature.
-type Block struct {
-	Headers          textproto.MIMEHeader // Optional message headers
-	Plaintext        []byte               // The original message text
-	Bytes            []byte               // The signed message
-	ArmoredSignature *armor.Block         // The signature block
-}
-
-// start is the marker which denotes the beginning of a clearsigned message.
-var start = []byte("\n-----BEGIN PGP SIGNED MESSAGE-----")
-
-// dashEscape is prefixed to any lines that begin with a hyphen so that they
-// can't be confused with endText.
-var dashEscape = []byte("- ")
-
-// endText is a marker which denotes the end of the message and the start of
-// an armored signature.
-var endText = []byte("-----BEGIN PGP SIGNATURE-----")
-
-// end is a marker which denotes the end of the armored signature.
-var end = []byte("\n-----END PGP SIGNATURE-----")
-
-var crlf = []byte("\r\n")
-var lf = byte('\n')
-
-// getLine returns the first \r\n or \n delineated line from the given byte
-// array. The line does not include the \r\n or \n. The remainder of the byte
-// array (also not including the new line bytes) is also returned and this will
-// always be smaller than the original argument.
-func getLine(data []byte) (line, rest []byte) {
-	i := bytes.Index(data, []byte{'\n'})
-	var j int
-	if i < 0 {
-		i = len(data)
-		j = i
-	} else {
-		j = i + 1
-		if i > 0 && data[i-1] == '\r' {
-			i--
-		}
-	}
-	return data[0:i], data[j:]
-}
-
-// Decode finds the first clearsigned message in data and returns it, as well
-// as the suffix of data which remains after the message.
-func Decode(data []byte) (b *Block, rest []byte) {
-	// start begins with a newline. However, at the very beginning of
-	// the byte array, we'll accept the start string without it.
-	rest = data
-	if bytes.HasPrefix(data, start[1:]) {
-		rest = rest[len(start)-1:]
-	} else if i := bytes.Index(data, start); i >= 0 {
-		rest = rest[i+len(start):]
-	} else {
-		return nil, data
-	}
-
-	// Consume the start line.
-	_, rest = getLine(rest)
-
-	var line []byte
-	b = &Block{
-		Headers: make(textproto.MIMEHeader),
-	}
-
-	// Next come a series of header lines.
-	for {
-		// This loop terminates because getLine's second result is
-		// always smaller than its argument.
-		if len(rest) == 0 {
-			return nil, data
-		}
-		// An empty line marks the end of the headers.
-		if line, rest = getLine(rest); len(line) == 0 {
-			break
-		}
-
-		i := bytes.Index(line, []byte{':'})
-		if i == -1 {
-			return nil, data
-		}
-
-		key, val := line[0:i], line[i+1:]
-		key = bytes.TrimSpace(key)
-		val = bytes.TrimSpace(val)
-		b.Headers.Add(string(key), string(val))
-	}
-
-	firstLine := true
-	for {
-		start := rest
-
-		line, rest = getLine(rest)
-		if len(line) == 0 && len(rest) == 0 {
-			// No armored data was found, so this isn't a complete message.
-			return nil, data
-		}
-		if bytes.Equal(line, endText) {
-			// Back up to the start of the line because armor expects to see the
-			// header line.
-			rest = start
-			break
-		}
-
-		// The final CRLF isn't included in the hash so we don't write it until
-		// we've seen the next line.
-		if firstLine {
-			firstLine = false
-		} else {
-			b.Bytes = append(b.Bytes, crlf...)
-		}
-
-		if bytes.HasPrefix(line, dashEscape) {
-			line = line[2:]
-		}
-		line = bytes.TrimRight(line, " \t")
-		b.Bytes = append(b.Bytes, line...)
-
-		b.Plaintext = append(b.Plaintext, line...)
-		b.Plaintext = append(b.Plaintext, lf)
-	}
-
-	// We want to find the extent of the armored data (including any newlines at
-	// the end).
-	i := bytes.Index(rest, end)
-	if i == -1 {
-		return nil, data
-	}
-	i += len(end)
-	for i < len(rest) && (rest[i] == '\r' || rest[i] == '\n') {
-		i++
-	}
-	armored := rest[:i]
-	rest = rest[i:]
-
-	var err error
-	b.ArmoredSignature, err = armor.Decode(bytes.NewBuffer(armored))
-	if err != nil {
-		return nil, data
-	}
-
-	return b, rest
-}
-
-// A dashEscaper is an io.WriteCloser which processes the body of a clear-signed
-// message. The clear-signed message is written to buffered and a hash, suitable
-// for signing, is maintained in h.
-//
-// When closed, an armored signature is created and written to complete the
-// message.
-type dashEscaper struct {
-	buffered *bufio.Writer
-	h        hash.Hash
-	hashType crypto.Hash
-
-	atBeginningOfLine bool
-	isFirstLine       bool
-
-	whitespace []byte
-	byteBuf    []byte // a one byte buffer to save allocations
-
-	privateKey *packet.PrivateKey
-	config     *packet.Config
-}
-
-func (d *dashEscaper) Write(data []byte) (n int, err error) {
-	for _, b := range data {
-		d.byteBuf[0] = b
-
-		if d.atBeginningOfLine {
-			// The final CRLF isn't included in the hash so we have to wait
-			// until this point (the start of the next line) before writing it.
-			if !d.isFirstLine {
-				d.h.Write(crlf)
-			}
-			d.isFirstLine = false
-		}
-
-		// Any whitespace at the end of the line has to be removed so we
-		// buffer it until we find out whether there's more on this line.
-		if b == ' ' || b == '\t' || b == '\r' {
-			d.whitespace = append(d.whitespace, b)
-			d.atBeginningOfLine = false
-			continue
-		}
-
-		if d.atBeginningOfLine {
-			// At the beginning of a line, hyphens have to be escaped.
-			if b == '-' {
-				// The signature isn't calculated over the dash-escaped text so
-				// the escape is only written to buffered.
-				if _, err = d.buffered.Write(dashEscape); err != nil {
-					return
-				}
-				d.h.Write(d.byteBuf)
-				d.atBeginningOfLine = false
-			} else if b == '\n' {
-				// Nothing to do because we delay writing CRLF to the hash.
-			} else {
-				d.h.Write(d.byteBuf)
-				d.atBeginningOfLine = false
-			}
-			if err = d.buffered.WriteByte(b); err != nil {
-				return
-			}
-		} else {
-			if b == '\n' {
-				// We got a raw \n. Drop any trailing whitespace and write a
-				// CRLF.
-				d.whitespace = d.whitespace[:0]
-				// We delay writing CRLF to the hash until the start of the
-				// next line.
-				if err = d.buffered.WriteByte(b); err != nil {
-					return
-				}
-				d.atBeginningOfLine = true
-			} else {
-				// Any buffered whitespace wasn't at the end of the line so
-				// we need to write it out.
-				if len(d.whitespace) > 0 {
-					d.h.Write(d.whitespace)
-					if _, err = d.buffered.Write(d.whitespace); err != nil {
-						return
-					}
-					d.whitespace = d.whitespace[:0]
-				}
-				d.h.Write(d.byteBuf)
-				if err = d.buffered.WriteByte(b); err != nil {
-					return
-				}
-			}
-		}
-	}
-
-	n = len(data)
-	return
-}
-
-func (d *dashEscaper) Close() (err error) {
-	if !d.atBeginningOfLine {
-		if err = d.buffered.WriteByte(lf); err != nil {
-			return
-		}
-	}
-	sig := new(packet.Signature)
-	sig.SigType = packet.SigTypeText
-	sig.PubKeyAlgo = d.privateKey.PubKeyAlgo
-	sig.Hash = d.hashType
-	sig.CreationTime = d.config.Now()
-	sig.IssuerKeyId = &d.privateKey.KeyId
-
-	if err = sig.Sign(d.h, d.privateKey, d.config); err != nil {
-		return
-	}
-
-	out, err := armor.Encode(d.buffered, "PGP SIGNATURE", nil)
-	if err != nil {
-		return
-	}
-
-	if err = sig.Serialize(out); err != nil {
-		return
-	}
-	if err = out.Close(); err != nil {
-		return
-	}
-	if err = d.buffered.Flush(); err != nil {
-		return
-	}
-	return
-}
-
-// Encode returns a WriteCloser which will clear-sign a message with privateKey
-// and write it to w. If config is nil, sensible defaults are used.
-func Encode(w io.Writer, privateKey *packet.PrivateKey, config *packet.Config) (plaintext io.WriteCloser, err error) {
-	if privateKey.Encrypted {
-		return nil, errors.InvalidArgumentError("signing key is encrypted")
-	}
-
-	hashType := config.Hash()
-	name := nameOfHash(hashType)
-	if len(name) == 0 {
-		return nil, errors.UnsupportedError("unknown hash type: " + strconv.Itoa(int(hashType)))
-	}
-
-	if !hashType.Available() {
-		return nil, errors.UnsupportedError("unsupported hash type: " + strconv.Itoa(int(hashType)))
-	}
-	h := hashType.New()
-
-	buffered := bufio.NewWriter(w)
-	// start has a \n at the beginning that we don't want here.
-	if _, err = buffered.Write(start[1:]); err != nil {
-		return
-	}
-	if err = buffered.WriteByte(lf); err != nil {
-		return
-	}
-	if _, err = buffered.WriteString("Hash: "); err != nil {
-		return
-	}
-	if _, err = buffered.WriteString(name); err != nil {
-		return
-	}
-	if err = buffered.WriteByte(lf); err != nil {
-		return
-	}
-	if err = buffered.WriteByte(lf); err != nil {
-		return
-	}
-
-	plaintext = &dashEscaper{
-		buffered: buffered,
-		h:        h,
-		hashType: hashType,
-
-		atBeginningOfLine: true,
-		isFirstLine:       true,
-
-		byteBuf: make([]byte, 1),
-
-		privateKey: privateKey,
-		config:     config,
-	}
-
-	return
-}
-
-// nameOfHash returns the OpenPGP name for the given hash, or the empty string
-// if the name isn't known. See RFC 4880, section 9.4.
-func nameOfHash(h crypto.Hash) string {
-	switch h {
-	case crypto.MD5:
-		return "MD5"
-	case crypto.SHA1:
-		return "SHA1"
-	case crypto.RIPEMD160:
-		return "RIPEMD160"
-	case crypto.SHA224:
-		return "SHA224"
-	case crypto.SHA256:
-		return "SHA256"
-	case crypto.SHA384:
-		return "SHA384"
-	case crypto.SHA512:
-		return "SHA512"
-	}
-	return ""
-}