feat: add password and fix errors

pkg/password/password.go

@@ -0,0 +1,31 @@
+package password
+
+import (
+	"golang.org/x/crypto/bcrypt"
+)
+
+//Password password
+type Password struct{}
+
+//NewService create a new fake password
+func NewService() *Password {
+	return &Password{}
+}
+
+//Generate a new password
+func (p *Password) Generate(raw string) (string, error) {
+	hash, err := bcrypt.GenerateFromPassword([]byte(raw), 10)
+	if err != nil {
+		return "", err
+	}
+	return string(hash), nil
+}
+
+//Compare compare two passwords
+func (p *Password) Compare(p1, p2 string) error {
+	err := bcrypt.CompareHashAndPassword([]byte(p1), []byte(p2))
+	if err != nil {
+		return err
+	}
+	return nil
+}