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moby--moby/vendor/golang.org/x/crypto/ssh/mac.go
Sebastiaan van Stijn 73571e4689
vendor: github.com/moby/buildkit v0.8.0-rc2
full diff: 6861f17f15...v0.8.0-rc2

- dockerfile: rename experimental channel to labs
- dockerfile build: fix not exit when meet error in load config metadata
- copy containerd.UnknownExitStatus to local const to reduce dependency graph in client
- executor: switch to docker seccomp profile
- add retry handlers to push/pull
- SSH-based auth for llb.Git operations
- Allow gateway exec-ing into a failed solve with an exec op
- Fix parsing ssh-based git sources
- Fix sshkeyscan to work with ipv6
- fix assumption that ssh port must be 2 digits
- vendor: github.com/Microsoft/go-winio v0.4.15
- vendor: github.com/tonistiigi/fsutil v0.0.0-20201103201449-0834f99b7b85
- vendor: containerd v1.4.1-0.20201117152358-0edc412565dc
- vendor: golang.org/x/crypto v0.0.0-20201117144127-c1f2f97bffc9

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2020-11-19 10:31:35 +01:00

61 lines
1.3 KiB
Go

// 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 ssh
// Message authentication support
import (
"crypto/hmac"
"crypto/sha1"
"crypto/sha256"
"hash"
)
type macMode struct {
keySize int
etm bool
new func(key []byte) hash.Hash
}
// truncatingMAC wraps around a hash.Hash and truncates the output digest to
// a given size.
type truncatingMAC struct {
length int
hmac hash.Hash
}
func (t truncatingMAC) Write(data []byte) (int, error) {
return t.hmac.Write(data)
}
func (t truncatingMAC) Sum(in []byte) []byte {
out := t.hmac.Sum(in)
return out[:len(in)+t.length]
}
func (t truncatingMAC) Reset() {
t.hmac.Reset()
}
func (t truncatingMAC) Size() int {
return t.length
}
func (t truncatingMAC) BlockSize() int { return t.hmac.BlockSize() }
var macModes = map[string]*macMode{
"hmac-sha2-256-etm@openssh.com": {32, true, func(key []byte) hash.Hash {
return hmac.New(sha256.New, key)
}},
"hmac-sha2-256": {32, false, func(key []byte) hash.Hash {
return hmac.New(sha256.New, key)
}},
"hmac-sha1": {20, false, func(key []byte) hash.Hash {
return hmac.New(sha1.New, key)
}},
"hmac-sha1-96": {20, false, func(key []byte) hash.Hash {
return truncatingMAC{12, hmac.New(sha1.New, key)}
}},
}