1 files changed, 0 insertions, 90 deletions
diff --git a/vendor/golang.org/x/crypto/nacl/sign/sign.go b/vendor/golang.org/x/crypto/nacl/sign/sign.go
deleted file mode 100644
index d076270..0000000
--- a/vendor/golang.org/x/crypto/nacl/sign/sign.go
+++ /dev/null
@@ -1,90 +0,0 @@
-// 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.
-
-// Package sign signs small messages using public-key cryptography.
-//
-// Sign uses Ed25519 to sign messages. The length of messages is not hidden.
-// Messages should be small because:
-// 1. The whole message needs to be held in memory to be processed.
-// 2. Using large messages pressures implementations on small machines to process
-// plaintext without verifying the signature. This is very dangerous, and this API
-// discourages it, but a protocol that uses excessive message sizes might present
-// some implementations with no other choice.
-// 3. Performance may be improved by working with messages that fit into data caches.
-// Thus large amounts of data should be chunked so that each message is small.
-//
-// This package is not interoperable with the current release of NaCl
-// (https://nacl.cr.yp.to/sign.html), which does not support Ed25519 yet. However,
-// it is compatible with the NaCl fork libsodium (https://www.libsodium.org), as well
-// as TweetNaCl (https://tweetnacl.cr.yp.to/).
-package sign
-
-import (
-	"io"
-
-	"golang.org/x/crypto/ed25519"
-	"golang.org/x/crypto/internal/subtle"
-)
-
-// Overhead is the number of bytes of overhead when signing a message.
-const Overhead = 64
-
-// GenerateKey generates a new public/private key pair suitable for use with
-// Sign and Open.
-func GenerateKey(rand io.Reader) (publicKey *[32]byte, privateKey *[64]byte, err error) {
-	pub, priv, err := ed25519.GenerateKey(rand)
-	if err != nil {
-		return nil, nil, err
-	}
-	publicKey, privateKey = new([32]byte), new([64]byte)
-	copy((*publicKey)[:], pub)
-	copy((*privateKey)[:], priv)
-	return publicKey, privateKey, nil
-}
-
-// Sign appends a signed copy of message to out, which will be Overhead bytes
-// longer than the original and must not overlap it.
-func Sign(out, message []byte, privateKey *[64]byte) []byte {
-	sig := ed25519.Sign(ed25519.PrivateKey((*privateKey)[:]), message)
-	ret, out := sliceForAppend(out, Overhead+len(message))
-	if subtle.AnyOverlap(out, message) {
-		panic("nacl: invalid buffer overlap")
-	}
-	copy(out, sig)
-	copy(out[Overhead:], message)
-	return ret
-}
-
-// Open verifies a signed message produced by Sign and appends the message to
-// out, which must not overlap the signed message. The output will be Overhead
-// bytes smaller than the signed message.
-func Open(out, signedMessage []byte, publicKey *[32]byte) ([]byte, bool) {
-	if len(signedMessage) < Overhead {
-		return nil, false
-	}
-	if !ed25519.Verify(ed25519.PublicKey((*publicKey)[:]), signedMessage[Overhead:], signedMessage[:Overhead]) {
-		return nil, false
-	}
-	ret, out := sliceForAppend(out, len(signedMessage)-Overhead)
-	if subtle.AnyOverlap(out, signedMessage) {
-		panic("nacl: invalid buffer overlap")
-	}
-	copy(out, signedMessage[Overhead:])
-	return ret, true
-}
-
-// sliceForAppend takes a slice and a requested number of bytes. It returns a
-// slice with the contents of the given slice followed by that many bytes and a
-// second slice that aliases into it and contains only the extra bytes. If the
-// original slice has sufficient capacity then no allocation is performed.
-func sliceForAppend(in []byte, n int) (head, tail []byte) {
-	if total := len(in) + n; cap(in) >= total {
-		head = in[:total]
-	} else {
-		head = make([]byte, total)
-		copy(head, in)
-	}
-	tail = head[len(in):]
-	return
-}