Function KeyIdFromRing

pkg/jsonsign/keys.go:176–191

KeyIdFromRing returns the public keyID contained in the secret ring file secRing. It expects only one keyID in this secret ring and returns an error otherwise.

(secRing string)

// ring file secRing. It expects only one keyID in this secret ring
// and returns an error otherwise.
func KeyIdFromRing(secRing string) (keyID string, err error) {
	f, err := wkfs.Open(secRing)
	if err != nil {
		return "", fmt.Errorf("Could not open secret ring file %v: %v", secRing, err)
	}
	defer f.Close()
	el, err := readKeyRing(f)
	if err != nil {
		return "", fmt.Errorf("Could not read secret ring file %s: %v", secRing, err)
	}
	if len(el) != 1 {
		return "", fmt.Errorf("Secret ring file %v contained %d identities; expected 1", secRing, len(el))
	}
	ent := el[0]
	return ent.PrimaryKey.KeyIdString(), nil
}

// GenerateNewSecRing creates a new secret ring file secRing, with
// a new GPG identity. It returns the public keyID of that identity.