mirror of
https://github.com/edgelesssys/constellation.git
synced 2024-10-01 01:36:09 -04:00
32 lines
594 B
Go
32 lines
594 B
Go
|
/*
|
||
|
|
Copyright (c) Edgeless Systems GmbH
|
||
|
|
|
||
|
|
SPDX-License-Identifier: AGPL-3.0-only
|
||
|
|
*/
|
||
|
|
|
||
|
|
package measure
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"fmt"
|
||
|
|
"hash"
|
||
|
|
"io"
|
||
|
|
|
||
|
|
"github.com/foxboron/go-uefi/efi/pecoff"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Authentihash returns the PE/COFF hash / Authentihash of a file.
|
||
|
|
func Authentihash(r io.Reader, h hash.Hash) ([]byte, error) {
|
||
|
|
buf := new(bytes.Buffer)
|
||
|
|
if _, err := buf.ReadFrom(r); err != nil {
|
||
|
|
return nil, fmt.Errorf("failed to read pe file: %v", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
signingCtx := pecoff.PECOFFChecksum(buf.Bytes())
|
||
|
|
pecoff.PaddSigCtx(signingCtx)
|
||
|
|
|
||
|
|
h.Write(signingCtx.SigData.Bytes())
|
||
|
|
|
||
|
|
return h.Sum(nil), nil
|
||
|
|
}
|