Heisenberg Group-Based Digital Signatures 

In this project, we present a secure cloud-based data storage solution that employs Edwards-Curve Digital Signature Algorithm (EdDSA) to ensure the integrity and authenticity of stored data. Users can upload various types of data, including files, videos, and music, to the cloud. To secure communication between the user and the server, the system utilizes EdDSA, a modern and efficient cryptographic algorithm, which provides enhanced security, data integrity, and non-repudiation. This approach leverages elliptic curve cryptography to protect against unauthorized access and safeguard data against emerging security threats, including those posed by quantum computing. EdDSA offers a faster, more secure, and scalable solution compared to traditional digital signature schemes, making it highly suitable for cloud data storage systems. The proposed system provides a quantum-resilient solution for cloud storage, ensuring that sensitive data remains protected against both current and future cryptographic challenges. Keywords: Cloud Storage, EdDSA, Digital Signatures, Data Integrity, Authentication, Cryptography, Non-repudiation, Secure Communication, Quantum Security, Data Protection.