Transfer first library files

hash.go

@@ -0,0 +1,16 @@
+package ersteller_lib
+
+// https://medium.com/@rnp0728/secure-password-hashing-in-go-a-comprehensive-guide-5500e19e7c1f
+import "golang.org/x/crypto/bcrypt"
+
+// HashPassword generates a bcrypt hash for the given password.
+func HashPassword(password string) (string, error) {
+	bytes, err := bcrypt.GenerateFromPassword([]byte(password), 14)
+	return string(bytes), err
+}
+
+// VerifyPassword verifies if the given password matches the stored hash.
+func VerifyPassword(password, hash string) bool {
+	err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
+	return err == nil
+}