/
encryptedBlob.go
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/
encryptedBlob.go
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// Copyright © 2018 SENETAS SECURITY PTY LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package distribution
import (
"github.com/pkg/errors"
"github.com/Senetas/crypto-cli/crypto"
)
// EncryptedBlob is a blob that may be decrypted
type EncryptedBlob interface {
Blob
// DecryptBlob decrypts:
// The Key encryption key contained in the "EnCrypto" struct
// The data stream in the FileHandle io.Reader
// The data is also decompressed and written to a file which is referenced
// in the "Filename"
DecryptBlob(opts *crypto.Opts, outfile string) (DecryptedBlob, error)
DecryptKey(opts *crypto.Opts) (KeyDecryptedBlob, error)
}
// EncryptedBlob is the go type for an encrypted element in the layer array
type encryptedBlobNew struct {
*NoncryptedBlob
*crypto.EnCrypto `json:"crypto"`
}
func (eb *encryptedBlobNew) DecryptBlob(opts *crypto.Opts, outname string) (_ DecryptedBlob, err error) {
kb, err := eb.DecryptKey(opts)
if err != nil {
return
}
return kb.DecryptFile(opts, outname)
}
func (eb *encryptedBlobNew) DecryptKey(opts *crypto.Opts) (_ KeyDecryptedBlob, err error) {
dk, err := crypto.DecryptKey(*eb.EnCrypto, opts)
if err != nil {
return
}
return &keyDecryptedBlob{
NoncryptedBlob: eb.NoncryptedBlob,
DeCrypto: &dk,
}, nil
}
// EncryptedBlob is the go type for an encrypted element in the layer array
type encryptedBlobCompat struct {
*NoncryptedBlob
URLs []string `json:"urls"`
}
func (e *encryptedBlobCompat) DecryptBlob(opts *crypto.Opts, outname string) (_ DecryptedBlob, err error) {
ek, err := crypto.NewEncryptoCompat(e.URLs, opts)
if err != nil {
return
}
eb := &encryptedBlobNew{
NoncryptedBlob: e.NoncryptedBlob,
EnCrypto: &ek,
}
return eb.DecryptBlob(opts, outname)
}
func (e *encryptedBlobCompat) DecryptKey(opts *crypto.Opts) (_ KeyDecryptedBlob, err error) {
ek, err := crypto.NewEncryptoCompat(e.URLs, opts)
if err != nil {
return
}
dk, err := crypto.DecryptKey(ek, opts)
if err != nil {
return
}
return &keyDecryptedBlob{
NoncryptedBlob: e.NoncryptedBlob,
DeCrypto: &dk,
}, nil
}
type encryptedConfigNew struct {
*NoncryptedBlob
*crypto.EnCrypto `json:"crypto"`
}
func (ec *encryptedConfigNew) DecryptBlob(opts *crypto.Opts, outname string) (_ DecryptedBlob, err error) {
kc, err := ec.DecryptKey(opts)
if err != nil {
return
}
return kc.DecryptFile(opts, outname)
}
func (ec *encryptedConfigNew) DecryptKey(opts *crypto.Opts) (_ KeyDecryptedBlob, err error) {
dk, err := crypto.DecryptKey(*ec.EnCrypto, opts)
if err != nil {
return
}
return &keyDecryptedConfig{
NoncryptedBlob: ec.NoncryptedBlob,
DeCrypto: &dk,
}, nil
}
type encryptedConfigCompat struct {
*NoncryptedBlob
URLs []string `json:"urls"`
}
func (e *encryptedConfigCompat) DecryptBlob(opts *crypto.Opts, outname string) (_ DecryptedBlob, err error) {
ek, err := crypto.NewEncryptoCompat(e.URLs, opts)
if err != nil {
return
}
eb := &encryptedConfigNew{
NoncryptedBlob: e.NoncryptedBlob,
EnCrypto: &ek,
}
return eb.DecryptBlob(opts, outname)
}
func (e *encryptedConfigCompat) DecryptKey(opts *crypto.Opts) (_ KeyDecryptedBlob, err error) {
ek, err := crypto.NewEncryptoCompat(e.URLs, opts)
if err != nil {
return
}
dk, err := crypto.DecryptKey(ek, opts)
if err != nil {
err = errors.WithStack(err)
return
}
return &keyDecryptedConfig{
NoncryptedBlob: e.NoncryptedBlob,
DeCrypto: &dk,
}, nil
}