{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,9]],"date-time":"2026-05-09T16:42:31Z","timestamp":1778344951570,"version":"3.51.4"},"reference-count":57,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2019,2,24]],"date-time":"2019-02-24T00:00:00Z","timestamp":1550966400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>Recent advancements in wireless technology have created an exponential rise in the number of connected devices leading to the internet of things (IoT) revolution. Large amounts of data are captured, processed and transmitted through the network by these embedded devices. Security of the transmitted data is a major area of concern in IoT networks. Numerous encryption algorithms have been proposed in these years to ensure security of transmitted data through the IoT network. Tiny encryption algorithm (TEA) is the most attractive among all, with its lower memory utilization and ease of implementation on both hardware and software scales. But one of the major issues of TEA and its numerous developed versions is the usage of the same key through all rounds of encryption, which yields a reduced security evident from the avalanche effect of the algorithm. Also, the encryption and decryption time for text is high, leading to lower efficiency in IoT networks with embedded devices. This paper proposes a novel tiny symmetric encryption algorithm (NTSA) which provides enhanced security for the transfer of text files through the IoT network by introducing additional key confusions dynamically for each round of encryption. Experiments are carried out to analyze the avalanche effect, encryption and decryption time of NTSA in an IoT network including embedded devices. The results show that the proposed NTSA algorithm is much more secure and efficient compared to state-of-the-art existing encryption algorithms.<\/jats:p>","DOI":"10.3390\/sym11020293","type":"journal-article","created":{"date-parts":[[2019,2,25]],"date-time":"2019-02-25T03:06:52Z","timestamp":1551064012000},"page":"293","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":136,"title":["A Secure and Efficient Lightweight Symmetric Encryption Scheme for Transfer of Text Files between Embedded IoT Devices"],"prefix":"10.3390","volume":"11","author":[{"given":"Sreeja","family":"Rajesh","sequence":"first","affiliation":[{"name":"Department of Computer Science, Bharathiar University, Coimbatore 641046, Tamil Nadu, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Varghese","family":"Paul","sequence":"additional","affiliation":[{"name":"Department of Information Technology, Cochin University of Science and Technology, Ernakulam 682022, Kerala, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Varun G.","family":"Menon","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Engineering, SCMS School of Engineering and Technology, Ernakulam 683582, Kerala, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2029-5067","authenticated-orcid":false,"given":"Mohammad R.","family":"Khosravi","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronic Engineering, Shiraz University of Technology, Shiraz 71555-313, Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,2,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2961","DOI":"10.1109\/COMST.2018.2849509","article-title":"Survey on Multi-Access Edge Computing for Internet of Things Realization","volume":"20","author":"Porambage","year":"2018","journal-title":"IEEE Commun. Surv. Tutor."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1109\/IOTM.2018.1700021","article-title":"The Future of IoT","volume":"1","author":"Ploennigs","year":"2018","journal-title":"IEEE Internet Things Mag."},{"key":"ref_3","first-page":"248","article-title":"A Review on latest Internet of Things based Healthcare Applications","volume":"15","author":"Philip","year":"2017","journal-title":"Int. J. Comput. Sci. Inf. Secur."},{"key":"ref_4","first-page":"13","article-title":"A Review on IoT based m-Health Systems for Diabetes","volume":"8","author":"Deshkar","year":"2017","journal-title":"Int. J. Comput. Sci. Telecommun."},{"key":"ref_5","unstructured":"Vinoj, P.G., Jacob, S., and Menon, V.G. (2018). Hybrid brainactuated muscle interface for the physically disabled. Basic and Clinical Pharmacology and Toxicology, Wiley."},{"key":"ref_6","first-page":"1","article-title":"Into the World of Underwater Swarm Robotics: Architecture, Communication, Applications and Challenges","volume":"12","author":"Keerthi","year":"2019","journal-title":"Recent Pat. Comput. Sci."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"47472","DOI":"10.1109\/ACCESS.2018.2866185","article-title":"Securing Internet-of-Things Systems through Implicit and Explicit Reputation Models","volume":"6","author":"Bordel","year":"2018","journal-title":"IEEE Access"},{"key":"ref_8","first-page":"15","article-title":"Vehicular Fog Computing: Challenges applications and future directions","volume":"1","author":"Menon","year":"2017","journal-title":"Int. J. Veh. Telemat. Infotain. Syst."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"2483","DOI":"10.1109\/JIOT.2017.2767291","article-title":"Evaluating Critical Security Issues of the IoT World: Present and Future Challenges","volume":"5","author":"Frustaci","year":"2018","journal-title":"IEEE Internet Things J."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1460","DOI":"10.1109\/TIFS.2018.2790916","article-title":"Cryptanalysis of a Symmetric Fully Homomorphic Encryption Scheme","volume":"13","author":"Wang","year":"2018","journal-title":"IEEE Trans. Inf. Forensics Secur."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"70","DOI":"10.1109\/MSP.2014.19","article-title":"Authenticated Encryption: Toward Next-Generation Algorithms","volume":"12","author":"Reyhanitabar","year":"2014","journal-title":"IEEE Secur. Privacy"},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Ahmad, S., Alam, K.M.R., Rahman, H., and Tamura, S. (2015, January 5\u20137). A comparison between symmetric and asymmetric key encryption algorithm based decryption mixnets. Proceedings of the 2015 International Conference on Networking Systems and Security (NSysS), Dhaka, Bangladesh.","DOI":"10.1109\/NSysS.2015.7043532"},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Yassein, M.B., Aljawarneh, S., Qawasmeh, E., Mardini, W., and Khamayseh, Y. (2017, January 21\u201323). Comprehensive study of symmetric key and asymmetric key encryption algorithms. Proceedings of the 2017 International Conference on Engineering and Technology (ICET), Antalya, Turkey.","DOI":"10.1109\/ICEngTechnol.2017.8308215"},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Lamba, C.S. (2010, January 26\u201328). Design and Analysis of Stream Cipher for Network Security. Proceedings of the 2010 Second International Conference on Communication Software and Networks, Singapore.","DOI":"10.1109\/ICCSN.2010.113"},{"key":"ref_15","unstructured":"Baker, S.I.B., and Al-Hamami, A.H. (2017, January 9\u201311). Novel Algorithm in Symmetric Encryption (NASE): Based on Feistel Cipher. Proceedings of the 2017 International Conference on New Trends in Computing Sciences (ICTCS), Amman, Jordan."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"1274","DOI":"10.1109\/TIFS.2013.2267733","article-title":"Formalizing the Effect of Feistel Cipher Structures on Differential Cache Attacks","volume":"8","author":"Rebeiro","year":"2013","journal-title":"IEEE Trans. Inf. Forensics Secur."},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Wheeler, D., and Needham, R. (1995, January 14\u201316). TEA, a tiny encryption algorithm. Proceedings of the 1995 Fast Software En-Cryption Workshop, Leuven, Belgium.","DOI":"10.1007\/3-540-60590-8_29"},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Amrutha George, A., Riyadh, M., and Prajitha, M.V. (2015, January 19\u201320). Secure image transferring using KBRP and TEA algorithms. Proceedings of the 2015 International Conference on Innovations in Information, Embedded and Communication Systems (ICIIECS), Coimbatore, India.","DOI":"10.1109\/ICIIECS.2015.7193117"},{"key":"ref_19","unstructured":"Abdelhalim, M.B., El-Mahallawy, M., Ayyad, M., and Elhennawy, A. (2011, January 11\u201314). Implementation of a modified lightweight cryptographic TEA algorithm in RFID system. Proceedings of the 2011 International Conference for Internet Technology and Secured Transactions, Abu Dhabi, UAE."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"233","DOI":"10.1080\/01611190601090606","article-title":"The Tiny Encryption Algorithm","volume":"31","author":"Shepherd","year":"2007","journal-title":"Cryptologia"},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Sima, I., Tarmurean, D., Greu, V., and Diaconu, A. (2012, January 21\u201323). XXTEA, an alternative replacement of KASUMI cipher algorithm in A5\/3 GSM and f8, f9 UMTS data security functions. Proceedings of the 2012 9th International Conference on Communications (COMM), Bucharest, Romania.","DOI":"10.1109\/ICComm.2012.6262617"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1007\/s10207-008-0059-9","article-title":"Related-key rectangle attack on 36 rounds of the XTEA block cipher","volume":"8","author":"Lu","year":"2009","journal-title":"Int. J. Inf. Sec."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"74","DOI":"10.1080\/01611194.2012.660237","article-title":"Demitasse: A \u201cSmall\u201d Version of the Tiny Encryption Algorithm and Its Use in a Classroom Setting","volume":"37","author":"Holden","year":"2013","journal-title":"Cryptologia"},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"De Dormale, G.M., Bass, J., and Quisquater, J.-J. (2007, January 23\u201325). On Solving RC5 Challenges with FPGAs. Proceedings of the 15th Annual IEEE Symposium on Field-Programmable Custom Computing Machines (FCCM 2007), Napa, CA, USA.","DOI":"10.1109\/FCCM.2007.13"},{"key":"ref_25","unstructured":"Li, T., Wu, H., Wang, X., and Bao, F. (2005). SenSec Design Technical Report-TR v1.1, InfoComm Security Department, Institute for Infocomm Research."},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Karlof, C., Sastry, N., and Wagner, D. (2004, January 3\u20135). TinySec: A link layer security architecture for wireless sensor networks. Proceedings of the 2nd International Conference on Embedded Networked Sensor Systems (SenSys \u201904), Baltimore, MD, USA.","DOI":"10.1145\/1031495.1031515"},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Luk, M., Mezzour, G., Perrig, A., and Gligor, V. (2007, January 25\u201327). MiniSec: A secure sensor network communication architecture. Proceedings of the 6th International Symposium on Information Processing in Sensor Networks (IPSN \u201907), Cambridge, MA, USA.","DOI":"10.1145\/1236360.1236421"},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Standaert, F.-X., Piret, G., Gershenfeld, N., and Quisquater, J.-J. (2005, January 14\u201315). SEA: A scalable encryption algorithm for small embedded applications. Proceedings of the Workshop on RFIP and Light weight Crypto, Graz, Austria.","DOI":"10.1007\/11733447_16"},{"key":"ref_29","unstructured":"Hong, D., Sung, J., Hong, S., Lim, J., Lee, S., Koo, B.-S., Lee, C., Chang, D., Lee, J., and Jeong, K. (2006). HIGHT: A new block cipher suitable for low-resource device. Cryptographic Hardware and Embedded Systems\u2014CHES 2006: 8th International Workshop, Yokohama, Japan, 10\u201313 October 2006, Springer. Volume 4249 of Lecture Notes in Computer Science."},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Usman, M., Ahmed, I., Aslam, M.I., Khan, S., and Shah, U.A. (2017). SIT: A Lightweight Encryption Algorithm for Secure Internet of Things. Int. J. Adv. Comput. Sci. Appl., 8.","DOI":"10.14569\/IJACSA.2017.080151"},{"key":"ref_31","unstructured":"Liang, C., Ye, N., Malekian, R., and Wang, R. (2016, January 23\u201324). The hybrid encryption algorithm of lightweight data in cloud storage. Proceedings of the 2016 2nd International Symposium on Agent, Multi-Agent Systems, and Robotics (ISAMSR), Bangi, Malaysia."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"38860","DOI":"10.1109\/ACCESS.2018.2852329","article-title":"M-SSE: An Effective Searchable Symmetric Encryption with Enhanced Security for Mobile Devices","volume":"6","author":"Gao","year":"2018","journal-title":"IEEE Access"},{"key":"ref_33","first-page":"50","article-title":"The IDEA Encryption Algorithm","volume":"18","author":"Schneier","year":"1990","journal-title":"Dr. Dobb\u2019s J."},{"key":"ref_34","unstructured":"Burwick, C., Coppersmith, D., D\u2019Avignon, E., Gennaro, R., Halevi, S., Jutla, C., Matyas, S.M., O\u2019Connor, L., Peyravian, M., and Safford, D. (2018, April 29). MARS\u2014A candidate cipher for AES. Available online: http:\/\/www.research.ibm.com\/security\/mars.html."},{"key":"ref_35","doi-asserted-by":"crossref","unstructured":"Abdelhalim, M.B., El-Mahallawy, M., and Elhennawy, M.A.A. (2013). Design and Implementation of an Encryption Algorithm for use in RFID System. Int. J. RFID Secur. Cryptogr., 2.","DOI":"10.20533\/ijrfidsc.2046.3715.2013.0007"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"573","DOI":"10.17654\/EC016030573","article-title":"Block Symmetric Cryptographic Algorithm based on Principles of variable block length and many-valued logic","volume":"16","author":"Zhdanov","year":"2016","journal-title":"Far East J. Electron. Commun."},{"key":"ref_37","unstructured":"(128 Bit Light Weight Block Cipher LEA, 2013). Korea Telecommunication Technology Association, 128 Bit Light Weight Block Cipher LEA, Information Telecommunication Organization Standard (Korean Standard)."},{"key":"ref_38","unstructured":"Park, J.H. (2015). 128 bit block cipher LEA. TTA J., 157."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"012039","DOI":"10.1088\/1742-6596\/1019\/1\/012039","article-title":"Super-Encryption Cryptography with IDEA and WAKE Algorithm","volume":"1019","author":"Abdullah","year":"2018","journal-title":"J. Phys. Conf. Ser."},{"key":"ref_40","unstructured":"Anderson, R., Biham, E., and Knudsen, L. (1998, January 20\u201322). Serpent: A Proposal for the Advanced Encryption Standard. Proceedings of the First Advanced Encryption Standard (AES) Conference, Ventura, CA, USA."},{"key":"ref_41","doi-asserted-by":"crossref","unstructured":"Ren, W., and Miao, Z. (2010, January 15\u201316). A Hybrid Encryption Algorithm Based on DES and RSA in Bluetooth Communication. Proceedings of the 2010 Second International Conference on Modeling, Simulation and Visualization Methods, Sanya, China.","DOI":"10.1109\/WMSVM.2010.48"},{"key":"ref_42","unstructured":"Wheeler, D., and Needham, R. (2018, April 22). TEA, A Tiny Encryption Algorithm. Available online: http:\/\/www.cix.co.uk\/~klockstone\/tea.pdf."},{"key":"ref_43","unstructured":"Andem, V.R. (2003). A Cryptanalysis of the Tiny Encryption Algorithm, The University of Alabama."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"012042","DOI":"10.1088\/1757-899X\/300\/1\/012042","article-title":"Hybrid Cryptosystem Using Tiny Encryption Algorithm and LUC Algorithm","volume":"300","author":"Rachmawati","year":"2018","journal-title":"IOP Conf. Ser. Mater. Sci. Eng."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"012037","DOI":"10.1088\/1742-6596\/1007\/1\/012037","article-title":"SMS Security System on Mobile Devices Using Tiny Encryption Algorithm","volume":"1007","author":"Novelan","year":"2018","journal-title":"IOP Conf. Ser. J. Phys. Conf. Ser."},{"key":"ref_46","unstructured":"Needham, R.M., and Wheeler, D.J. (1997). TEA Extensions, Computer Laboratory, University of Cambridge. Technical Report."},{"key":"ref_47","unstructured":"Kaps, J.-P. (2008, January 14\u201317). Chai-tea, Cryptographic Hardware Implementations of XTEA. Proceedings of the INDOCRYPT 08 Proceedings of the 9th International Conference on Cryptology in India: Progress in Cryptology, Kharagpur, India."},{"key":"ref_48","unstructured":"Wheeler, D., and Needham, R. (1998). XXTEA: Correction to XTEA, Computer Laboratory, University of Cambridge. Technical report."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"253","DOI":"10.1147\/rd.402.0253","article-title":"A proposed mode for triple-DES encryption","volume":"40","author":"Coppersmith","year":"1996","journal-title":"IBM J. Res. Dev."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"1191","DOI":"10.3844\/jcssp.2012.1191.1197","article-title":"Comparative Study of Performance in Cryptography Algorithms (Blowfish and Skipjack)","volume":"8","author":"Milad","year":"2012","journal-title":"J. Comput. Sci."},{"key":"ref_51","doi-asserted-by":"crossref","unstructured":"Wu, F., Wu, T., and Yuce, M.R. (2019). An Internet-of-Things (IoT) Network System for Connected Safety and Health Monitoring Applications. Sensors, 19.","DOI":"10.3390\/s19010021"},{"key":"ref_52","first-page":"9141329","article-title":"Ensuring reliable communication in disaster recovery operations with reliable routing technique","volume":"2016","author":"Menon","year":"2016","journal-title":"Mobile Inf. Syst."},{"key":"ref_53","doi-asserted-by":"crossref","unstructured":"Menon, V.G., and Prathap, J. (2016, January 21\u201322). Comparative analysis of opportunistic routing protocols for underwater acoustic sensor networks. Proceedings of the 2016 International Conference on Emerging Technological Trends (ICETT), Kollam, India.","DOI":"10.1109\/ICETT.2016.7873733"},{"key":"ref_54","first-page":"020130","article-title":"Optimized Opportunistic Routing in Highly Dynamic Ad hoc Networks","volume":"2019","author":"Menon","year":"2019","journal-title":"Preprints"},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"4181","DOI":"10.19026\/rjaset.6.3529","article-title":"Performance of various Routing Protocols in Mobile Ad Hoc Networks-A Survey","volume":"6","author":"Menon","year":"2013","journal-title":"Res. J. Appl. Sci. Eng. Technol."},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"1916","DOI":"10.21817\/ijet\/2016\/v8i5\/160805409","article-title":"Analyzing the behavior and performance of opportunistic routing protocols in highly mobile wireless ad hoc networks","volume":"8","author":"Menon","year":"2016","journal-title":"Int. J. Eng. Technol."},{"key":"ref_57","doi-asserted-by":"crossref","unstructured":"Menon, V.G., and Prathap, P.M.J. (2016). Opportunistic routing with virtual coordinates to handle communication voids in mobile ad hoc networks. Advances in Signal Processing and Intelligent Recognition Systems, Springer.","DOI":"10.1007\/978-3-319-28658-7_28"}],"container-title":["Symmetry"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2073-8994\/11\/2\/293\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T12:34:26Z","timestamp":1760186066000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2073-8994\/11\/2\/293"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,2,24]]},"references-count":57,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2019,2]]}},"alternative-id":["sym11020293"],"URL":"https:\/\/doi.org\/10.3390\/sym11020293","relation":{},"ISSN":["2073-8994"],"issn-type":[{"value":"2073-8994","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,2,24]]}}}