RFID (Radio Frequency Identification Device) is increasingly used in all inventory control and automation application. But the security of the system is a big issue while scanning multiple tags. To preserve the security, number of authentication protocol has been proposed. These protocols have the ability to preserve the system from all threats attack. But, these protocols do not protect the system from compromised tag attack. To overcome this problem a novel secure RFID authentication protocol based an Elliptic Curve Cryptography (ECC) was proposed. Although this protocol provides the high security, its tag computation cost is high. The reason for this high tag computation cost is, protocol needs Elliptic Curve Cryptography. In this paper, we explore a notion of minimalist cryptography suitable for RFID tags using onetime padding. One-time pad is a simple, classical form of encryption. Application of a one-time pad requires only the lightweight computational process of XORing.