Recently, the computing environment is changing due to the advent of resource-constrained devices, such as smart cards. That causes a limitation in providing some main feature to the low constraint computation devices such as security. The main purpose of this paper is to design a lightweight and secure stream ciphers for IoT to secure hardware and software that can fit constrain resources devices. Thus, we implement our proposed solution on 8 bits AVR microcontroller in order to study the required memory and speed. Also, two hardware algorithms which are Trivium and Grain are implemented and comparison provided between them and the proposed stream ciphers requirements. Also, our proposed SGCA algorithm proves to have less memory and time consuming than Trivium and Grain algorithms.