Exemplo n.º 1
0
func decryptFile(store sops.Store, fileBytes []byte, ignoreMac bool) (sops.Tree, error) {
	var tree sops.Tree
	metadata, err := store.UnmarshalMetadata(fileBytes)
	if err != nil {
		return tree, cli.NewExitError(fmt.Sprintf("Error loading file: %s", err), exitCouldNotReadInputFile)
	}
	key, err := metadata.GetDataKey()
	if err != nil {
		return tree, cli.NewExitError(err.Error(), exitCouldNotRetrieveKey)
	}
	branch, err := store.Unmarshal(fileBytes)
	if err != nil {
		return tree, cli.NewExitError(fmt.Sprintf("Error loading file: %s", err), exitCouldNotReadInputFile)
	}
	tree = sops.Tree{Branch: branch, Metadata: metadata}
	cipher := aes.Cipher{}
	mac, err := tree.Decrypt(key, cipher)
	if err != nil {
		return tree, cli.NewExitError(fmt.Sprintf("Error decrypting tree: %s", err), exitErrorDecryptingTree)
	}
	originalMac, err := cipher.Decrypt(metadata.MessageAuthenticationCode, key, []byte(metadata.LastModified.Format(time.RFC3339)))
	if originalMac != mac && !ignoreMac {
		return tree, cli.NewExitError(fmt.Sprintf("MAC mismatch. File has %s, computed %s", originalMac, mac), 9)
	}
	return tree, nil
}
Exemplo n.º 2
0
func loadEncryptedFile(c *cli.Context, store sops.Store, fileBytes []byte) (tree sops.Tree, err error) {
	metadata, err := store.UnmarshalMetadata(fileBytes)
	if err != nil {
		return tree, cli.NewExitError(fmt.Sprintf("Error loading file metadata: %s", err), exitCouldNotReadInputFile)
	}
	branch, err := store.Unmarshal(fileBytes)
	if err != nil {
		return tree, cli.NewExitError(fmt.Sprintf("Error loading file: %s", err), exitCouldNotReadInputFile)
	}
	return sops.Tree{
		Branch:   branch,
		Metadata: metadata,
	}, nil
}