It is crucial to protect data in the current setting where the cloud has become a common home for storing information. This project provides a novel solution for generic file sharing and protection where data is stored in the AWS S3 system with the aid of cryptographic algorithms. In the development of the proposed system, AES and RSA modes of security are used to enhance security in the file uploading, storing and retrieval. Current approaches fail to demonstrate satisfactory scalability as well as flexibility of multiple encryption methodologies. Our approach fills the gaps in the following ways: AWS KMS (Key Management Service) for extra layers of encryption and data sanctity. The system divides files into portions, employing AES to encrypt each portion, and AES key employ RSA encryption before storing it on AWS S3. This multi-layered approach of encrypting the data helps to reduce the possibility of an unauthorized person breaking into the information database. The testing is effective in the showcase of project effectiveness with improved data security while at the same time demonstrating substantial added performance. Subsequent versions will build upon the current encryption scheme and include improvements like on-the-fly threat identification and automatic key swapping to bolster security. This project has positioned itself as one of the most secure solutions for file storage and management using cloud computing technology that can accommodate the needs of enterprise-sized businesses.

Keywords:Cloud computing, data security, file encryption, AWS S3, AES encryption, RSA encryption key management service (KMS), secure file management data confidentiality, data integrity, hybrid encryption cloud storage, cybersecurity, encrypted file storage, secure data transmission

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1. Aditya DJ, Laxmanraj S, Krishna RS. Private document vault with server-side encryption in cloud AWS S3 bucket. In: 2023 8th International Conference on Communication and Electronics Systems (ICCES); 2023 Jun 1. pp. 1774–1778. IEEE.
2. Rani EG, Chetana DT. To increase security and privacy, the QAES encryption algorithm is used for storage of data for cloud computing. In: 2022 IEEE 19th India Council International Conference (INDICON); 2022 Nov 24. pp. 1–8. IEEE.
3. Soman VK, Natarajan V. An enhanced hybrid data security algorithm for cloud. In 2017 International conference on networks & advances in computational technologies (NetACT); 2017 Jul 20. pp. 416–19. IEEE.
4. Khanezaei N, Hanapi ZM. A framework based on RSA and AES encryption algorithms for cloud computing services. In2014 IEEE conference on systems, process and control (ICSPC 2014); 2014 Dec 12. pp. 58–62. IEEE.
5. Getting started with Amazon S3 - Amazon Simple Storage Service. Amazon.com. 2025. Available from: https://docs.aws.amazon.com/AmazonS3/latest/userguide/GetStartedWithS3.html ‌
6. Rivest RL, Shamir A, Adleman L. A method for obtaining digital signatures and public-key cryptosystems. Communications of the ACM. 1978 Feb 1;21(2):120–6.
7. Announcing the Advanced Encryption Standard (AES). Federal Information Processing Standards Publication 197. U.S. Department of Commerce/National Institute of Standards and Technology; 2001.
8. Mell P. The NIST definition of cloud computing. Recommendations of the National Institute of Standards and Technology. 2011.
9. Kamara S, Lauter K. Cryptographic cloud storage. In: International Conference on Financial Cryptography and Data Security. Berlin, Heidelberg: Springer Berlin Heidelberg; 2010 Jan 25. pp. 136–149.
10. Chow R, Golle P, Jakobsson M, Shi E, Staddon J, Masuoka R, et al. Controlling data in the cloud: outsourcing computation without outsourcing control. In: Proceedings of the 2009 ACM workshop on Cloud computing security; 2009 Nov 13. pp. 85–
11. Moghaddam FF, Moghaddam SG, Rouzbeh S, Araghi SK, Alibeigi NM, Varnosfaderani SD. A scalable and efficient user authentication scheme for cloud computing environments. In: 2014 IEEE Region 10 Symposium; 2014 Apr 14. pp. 508– IEEE.
12. Kumar YK, Shafi RM. An efficient and secure data storage in cloud computing using modified RSA public key cryptosystem. Intl J Electric Compu Eng. 2020 Feb 1;10(1):530.
13. Yadav RK, Saran M, Maurya P, Devi S, Tripathi UN. Hybrid DES-RSA model for the security of data over cloud storage. Compu Integ Manufac Sys. 2023 Jul 9;29(7):177–
14. Zarandioon S, Yao D, Ganapathy V. K2C: Cryptographic cloud storage with lazy revocation and anonymous access. In: International Conference on Security and Privacy in Communication Systems. Berlin, Heidelberg: Springer Berlin Heidelberg; 2011 Sep 7. pp. 59–

It is crucial to protect data in the current setting where the cloud has become a common home for storing information. This project provides a novel solution for generic file sharing and protection where data is stored in the AWS S3 system with the aid of cryptographic algorithms. In the development of the proposed system, AES and RSA modes of security are used to enhance security in the file uploading, storing and retrieval. Current approaches fail to demonstrate satisfactory scalability as well as flexibility of multiple encryption methodologies. Our approach fills the gaps in the following ways: AWS KMS (Key Management Service) for extra layers of encryption and data sanctity. The system divides files into portions, employing AES to encrypt each portion, and AES key employ RSA encryption before storing it on AWS S3. This multi-layered approach of encrypting the data helps to reduce the possibility of an unauthorized person breaking into the information database. The testing is effective in the showcase of project effectiveness with improved data security while at the same time demonstrating substantial added performance. Subsequent versions will build upon the current encryption scheme and include improvements like on-the-fly threat identification and automatic key swapping to bolster security. This project has positioned itself as one of the most secure solutions for file storage and management using cloud computing technology that can accommodate the needs of enterprise-sized businesses.

Keywords:Cloud computing, data security, file encryption, AWS S3, AES encryption, RSA encryption key management service (KMS), secure file management data confidentiality, data integrity, hybrid encryption cloud storage, cybersecurity, encrypted file storage, secure data transmission

🔒 This is a subscription article

Full text is available to subscribers and institutional members. Please choose an option below to access it.

1. Aditya DJ, Laxmanraj S, Krishna RS. Private document vault with server-side encryption in cloud AWS S3 bucket. In: 2023 8th International Conference on Communication and Electronics Systems (ICCES); 2023 Jun 1. pp. 1774–1778. IEEE.
2. Rani EG, Chetana DT. To increase security and privacy, the QAES encryption algorithm is used for storage of data for cloud computing. In: 2022 IEEE 19th India Council International Conference (INDICON); 2022 Nov 24. pp. 1–8. IEEE.
3. Soman VK, Natarajan V. An enhanced hybrid data security algorithm for cloud. In 2017 International conference on networks & advances in computational technologies (NetACT); 2017 Jul 20. pp. 416–19. IEEE.
4. Khanezaei N, Hanapi ZM. A framework based on RSA and AES encryption algorithms for cloud computing services. In2014 IEEE conference on systems, process and control (ICSPC 2014); 2014 Dec 12. pp. 58–62. IEEE.
5. Getting started with Amazon S3 - Amazon Simple Storage Service. Amazon.com. 2025. Available from: https://docs.aws.amazon.com/AmazonS3/latest/userguide/GetStartedWithS3.html ‌
6. Rivest RL, Shamir A, Adleman L. A method for obtaining digital signatures and public-key cryptosystems. Communications of the ACM. 1978 Feb 1;21(2):120–6.
7. Announcing the Advanced Encryption Standard (AES). Federal Information Processing Standards Publication 197. U.S. Department of Commerce/National Institute of Standards and Technology; 2001.
8. Mell P. The NIST definition of cloud computing. Recommendations of the National Institute of Standards and Technology. 2011.
9. Kamara S, Lauter K. Cryptographic cloud storage. In: International Conference on Financial Cryptography and Data Security. Berlin, Heidelberg: Springer Berlin Heidelberg; 2010 Jan 25. pp. 136–149.
10. Chow R, Golle P, Jakobsson M, Shi E, Staddon J, Masuoka R, et al. Controlling data in the cloud: outsourcing computation without outsourcing control. In: Proceedings of the 2009 ACM workshop on Cloud computing security; 2009 Nov 13. pp. 85–
11. Moghaddam FF, Moghaddam SG, Rouzbeh S, Araghi SK, Alibeigi NM, Varnosfaderani SD. A scalable and efficient user authentication scheme for cloud computing environments. In: 2014 IEEE Region 10 Symposium; 2014 Apr 14. pp. 508– IEEE.
12. Kumar YK, Shafi RM. An efficient and secure data storage in cloud computing using modified RSA public key cryptosystem. Intl J Electric Compu Eng. 2020 Feb 1;10(1):530.
13. Yadav RK, Saran M, Maurya P, Devi S, Tripathi UN. Hybrid DES-RSA model for the security of data over cloud storage. Compu Integ Manufac Sys. 2023 Jul 9;29(7):177–
14. Zarandioon S, Yao D, Ganapathy V. K2C: Cryptographic cloud storage with lazy revocation and anonymous access. In: International Conference on Security and Privacy in Communication Systems. Berlin, Heidelberg: Springer Berlin Heidelberg; 2011 Sep 7. pp. 59–