Add decryptMime and refactor package structure

fingerprint.go

@@ -1,32 +0,0 @@
-package pmcrypto
-
-import (
-	"bytes"
-	"encoding/hex"
-	"errors"
-
-	"golang.org/x/crypto/openpgp"
-)
-
-// GetFingerprint get a armored public key fingerprint
-func GetFingerprint(publicKey string) (string, error) {
-	rawPubKey, err := UnArmor(publicKey)
-	if err != nil {
-		return "", err
-	}
-	return GetFingerprintBinKey(rawPubKey)
-}
-
-// GetFingerprintBinKey get a unarmored public key fingerprint
-func GetFingerprintBinKey(publicKey []byte) (string, error) {
-	pubKeyReader := bytes.NewReader(publicKey)
-	pubKeyEntries, err := openpgp.ReadKeyRing(pubKeyReader)
-	if err != nil {
-		return "", err
-	}
-	for _, e := range pubKeyEntries {
-		fp := e.PrimaryKey.Fingerprint
-		return hex.EncodeToString(fp[:]), nil
-	}
-	return "", errors.New("Can't find public key")
-}