Worked on login remember cookie, and redirect after login

pkg/util/encoding.go

@@ -2,8 +2,10 @@ package util
 
 import (
 	"crypto/hmac"
+	"crypto/md5"
 	"crypto/rand"
 	"crypto/sha256"
+	"encoding/hex"
 	"fmt"
 	"hash"
 )
@@ -28,6 +30,13 @@ func EncodePassword(password string, salt string) string {
 	return fmt.Sprintf("%x", newPasswd)
 }
 
+// Encode string to md5 hex value.
+func EncodeMd5(str string) string {
+	m := md5.New()
+	m.Write([]byte(str))
+	return hex.EncodeToString(m.Sum(nil))
+}
+
 // http://code.google.com/p/go/source/browse/pbkdf2/pbkdf2.go?repo=crypto
 func PBKDF2(password, salt []byte, iter, keyLen int, h func() hash.Hash) []byte {
 	prf := hmac.New(h, password)