add struct for pubkey representation

pubKeyRep.go

@@ -0,0 +1,26 @@
+package dkim
+
+import (
+	"crypto/rsa"
+	"fmt"
+	"net"
+)
+
+// pubKeyRep represents a parsed version of public key record
+type pubKeyRep struct {
+	Version      string
+	HashAlgo     []string
+	KeyType      string
+	Note         string
+	PubKey       rsa.PublicKey
+	ServiceType  []string
+	FlagTesting  bool // flag y
+	FlagIMustBeD bool // flag i
+}
+
+func newPubKeyFromDnsTxt(selector, domain string) (*pubKeyRep, error) {
+	txt, err := net.LookupTXT(selector + "._domainkey." + domain)
+	fmt.Println(txt, err)
+
+	return nil, nil
+}