Data with deferent types are now transferring over the internet and the demands for clouding systems are now increasing Data generated, captured, and replicated are increasing in size and expanding applications. So the need for data encryption-decryption methods became a vital necessary issue. The used technique here must very simple, Effective, and accurate. A simple and highly secure encryption decryption (SHSED) algorithm that can be used for cloud computing-based applications, where introduced. It uses simple and efficient logical operations, such as XORing, addition, and subtraction in addition to byte shifting. The introduced, introduced method is also powered by the flexibility of selecting the secret key length and the number of rounds to generate the cypher text. Experimental results for the introduced method were compared with other methods results (LED, AES, DES), and as a result of comparisons the introduced method give a good improvement in encryption-decryption time measurement.