Added skeleton code for register endpoint (#2)

Reviewed-on: phoenix/textsender-auth#2
Co-authored-by: phoenix <kundeng00@pm.me>
Co-committed-by: phoenix <kundeng00@pm.me>

internal/utility/hashing.go

@@ -0,0 +1,24 @@
+package utility
+
+
+import (
+	"golang.org/x/crypto/bcrypt"
+)
+
+type HashMash struct {
+	Password string
+}
+
+func (h HashMash) HashPassword() (string, error) {
+	bytes, err := bcrypt.GenerateFromPassword([]byte(h.Password), bcrypt.DefaultCost)
+	return string(bytes), err
+}
+
+func (h HashMash) CheckPasswordHash(password string, hash string) bool {
+	err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
+	return err == nil
+}
+
+func (h *HashMash) SetPassword(password string) {
+	h.Password = password
+}