forked from TrueCloudLab/distribution
37 lines
1 KiB
Go
37 lines
1 KiB
Go
// Copyright 2014 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 internal
|
|
|
|
import (
|
|
"crypto/rsa"
|
|
"crypto/x509"
|
|
"encoding/pem"
|
|
"errors"
|
|
"fmt"
|
|
)
|
|
|
|
// ParseKey converts the binary contents of a private key file
|
|
// to an *rsa.PrivateKey. It detects whether the private key is in a
|
|
// PEM container or not. If so, it extracts the private key
|
|
// from PEM container before conversion. It only supports PEM
|
|
// containers with no passphrase.
|
|
func ParseKey(key []byte) (*rsa.PrivateKey, error) {
|
|
block, _ := pem.Decode(key)
|
|
if block != nil {
|
|
key = block.Bytes
|
|
}
|
|
parsedKey, err := x509.ParsePKCS8PrivateKey(key)
|
|
if err != nil {
|
|
parsedKey, err = x509.ParsePKCS1PrivateKey(key)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("private key should be a PEM or plain PKCS1 or PKCS8; parse error: %v", err)
|
|
}
|
|
}
|
|
parsed, ok := parsedKey.(*rsa.PrivateKey)
|
|
if !ok {
|
|
return nil, errors.New("private key is invalid")
|
|
}
|
|
return parsed, nil
|
|
}
|