Homomorphic Encryption Based Privacy Protection Techniques for Cloud Computing

In modern information technology, the rapid development of cloud computing has brought convenience and improved office efficiency for various fields and users. But it also brings up all kinds of data security issues. One of the prominent problems is the privacy and security issue, some of the cloud computing systems are not trustworthy, with all kinds of users' private data vulnerable to leakage and illegal tampering incidents, the privacy protection of cloud computing has attracted widespread attention. To face this problem, this article proposes a cloud computing privacy technique based on homomorphic encryption. Homomorphic encryption algorithms are encryption techniques with special properties that enable third parties to efficiently compute the ciphertext without decrypting it. This means that data can still be encrypted in the encrypted state to achieve computational processing, while using the corresponding state secret algorithms to ensure the non-repudiation of the data generated by the cloud computing servers, which substantially reduces the risk of data leakage while improving the efficiency of computing by cloud computing.