mirror of
https://gitea.com/Lydanne/buildx.git
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b35a0f4718
Removes gogo/protobuf from buildx and updates to a version of moby/buildkit where gogo is removed. This also changes how the proto files are generated. This is because newer versions of protobuf are more strict about name conflicts. If two files have the same name (even if they are relative paths) and are used in different protoc commands, they'll conflict in the registry. Since protobuf file generation doesn't work very well with `paths=source_relative`, this removes the `go:generate` expression and just relies on the dockerfile to perform the generation. Signed-off-by: Jonathan A. Sternberg <jonathan.sternberg@docker.com>
100 lines
3.4 KiB
Go
100 lines
3.4 KiB
Go
// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package blowfish implements Bruce Schneier's Blowfish encryption algorithm.
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//
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// Blowfish is a legacy cipher and its short block size makes it vulnerable to
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// birthday bound attacks (see https://sweet32.info). It should only be used
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// where compatibility with legacy systems, not security, is the goal.
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//
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// Deprecated: any new system should use AES (from crypto/aes, if necessary in
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// an AEAD mode like crypto/cipher.NewGCM) or XChaCha20-Poly1305 (from
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// golang.org/x/crypto/chacha20poly1305).
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package blowfish
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// The code is a port of Bruce Schneier's C implementation.
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// See https://www.schneier.com/blowfish.html.
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import "strconv"
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// The Blowfish block size in bytes.
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const BlockSize = 8
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// A Cipher is an instance of Blowfish encryption using a particular key.
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type Cipher struct {
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p [18]uint32
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s0, s1, s2, s3 [256]uint32
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}
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type KeySizeError int
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func (k KeySizeError) Error() string {
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return "crypto/blowfish: invalid key size " + strconv.Itoa(int(k))
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}
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// NewCipher creates and returns a Cipher.
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// The key argument should be the Blowfish key, from 1 to 56 bytes.
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func NewCipher(key []byte) (*Cipher, error) {
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var result Cipher
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if k := len(key); k < 1 || k > 56 {
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return nil, KeySizeError(k)
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}
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initCipher(&result)
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ExpandKey(key, &result)
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return &result, nil
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}
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// NewSaltedCipher creates a returns a Cipher that folds a salt into its key
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// schedule. For most purposes, NewCipher, instead of NewSaltedCipher, is
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// sufficient and desirable. For bcrypt compatibility, the key can be over 56
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// bytes.
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func NewSaltedCipher(key, salt []byte) (*Cipher, error) {
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if len(salt) == 0 {
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return NewCipher(key)
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}
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var result Cipher
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if k := len(key); k < 1 {
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return nil, KeySizeError(k)
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}
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initCipher(&result)
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expandKeyWithSalt(key, salt, &result)
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return &result, nil
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}
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// BlockSize returns the Blowfish block size, 8 bytes.
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// It is necessary to satisfy the Block interface in the
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// package "crypto/cipher".
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func (c *Cipher) BlockSize() int { return BlockSize }
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// Encrypt encrypts the 8-byte buffer src using the key k
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// and stores the result in dst.
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// Note that for amounts of data larger than a block,
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// it is not safe to just call Encrypt on successive blocks;
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// instead, use an encryption mode like CBC (see crypto/cipher/cbc.go).
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func (c *Cipher) Encrypt(dst, src []byte) {
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l := uint32(src[0])<<24 | uint32(src[1])<<16 | uint32(src[2])<<8 | uint32(src[3])
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r := uint32(src[4])<<24 | uint32(src[5])<<16 | uint32(src[6])<<8 | uint32(src[7])
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l, r = encryptBlock(l, r, c)
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dst[0], dst[1], dst[2], dst[3] = byte(l>>24), byte(l>>16), byte(l>>8), byte(l)
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dst[4], dst[5], dst[6], dst[7] = byte(r>>24), byte(r>>16), byte(r>>8), byte(r)
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}
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// Decrypt decrypts the 8-byte buffer src using the key k
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// and stores the result in dst.
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func (c *Cipher) Decrypt(dst, src []byte) {
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l := uint32(src[0])<<24 | uint32(src[1])<<16 | uint32(src[2])<<8 | uint32(src[3])
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r := uint32(src[4])<<24 | uint32(src[5])<<16 | uint32(src[6])<<8 | uint32(src[7])
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l, r = decryptBlock(l, r, c)
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dst[0], dst[1], dst[2], dst[3] = byte(l>>24), byte(l>>16), byte(l>>8), byte(l)
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dst[4], dst[5], dst[6], dst[7] = byte(r>>24), byte(r>>16), byte(r>>8), byte(r)
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}
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func initCipher(c *Cipher) {
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copy(c.p[0:], p[0:])
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copy(c.s0[0:], s0[0:])
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copy(c.s1[0:], s1[0:])
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copy(c.s2[0:], s2[0:])
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copy(c.s3[0:], s3[0:])
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}
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