A central aspect of data security in the cloud is encryption. It converts readable data into a code that can only be decoded with a special key. There are two types of encryption: Encryption in transit
- The transport encryption
- The encryption at rest (memory encryption).
Transport encryption, also known as Transport Layer Security (TLS) or secure sockets Layer (SSL), is a security protocol used to secure communication over a Network to secure. It is commonly used to secure communication between web browsers and web servers, but can also be used in many other contexts.
The transport encryption mechanisms:
- Encryption: The main function of transport encryption is to encrypt data transmitted over a network to be sent. This means the data is converted into a form that can only be read by someone with the right key. This prevents third parties who may have access to the network from reading the data.
- Authentication: Another important aspect of transport encryption is authentication. This means that the parties involved in the communication can confirm their identity. This is often achieved through the use of certificates issued by a trusted certificate authority.
- Integrity: Transport encryption also ensures that the data has not been altered during transmission. This is achieved through the use of checksums and other techniques.
- Handshake protocol: Before the actual data transmission begins, the communication partners carry out what is known as a “handshake”. In this process, they agree on the encryption methods to be used and exchange keys. This process is crucial for the security of the subsequent communication.
- HTTPS: When you visit a website with “https://” in the URL, it means that the communication between your browser and the web server is secured using TLS or SSL. This is particularly important if you have sensitive information such as passwords or Enter credit card details.
Although transport encryption offers many security benefits, it does not cover all possible security threats. For example, it does not protect against attacks that target communication endpoints (e.g., users’ devices) and it can be vulnerably protected by certain types of attacks, such as Man-in-the-middle attacks, can be undermined if not properly implemented.
Storage encryption is another important aspect in encryption technology. It refers to the process by which data stored on a storage medium is converted into a form that cannot be read without the appropriate key.
Key elements you should know about storage encryption:
- Types of memory encryption: There are different types of Memory encryption, including full disk encryption (Full Disk Encryption, FDE), file system encryption and single file encryption. FDE encrypts the entire hard drive, including the operating system and all files. With file system encryption, only a certain part of the storage medium encrypted. With single-file encryption, only a specific file or folder is encrypted.
- Encryption Algorithms: There are several algorithms that can be used to encrypt data, including AES (Advanced Encryption Standard), DES (Data Encryption Standard), RSA (Rivest-Shamir-Adleman) and many others. AES is currently the most commonly used standard for encryption.
- Key management: The key used to decrypt the data is just as important as the data itself. If the key is lost, the data is lost too. It is therefore important that keys are stored and managed securely.
- Performance: Encryption and decryption of data may require computing power, which may affect the performance of the system. However, modern encryption techniques and hardware have helped to minimize this impact.
- Legal and regulatory issues: Many countries and industries have legal and regulatory requirements for encrypting data. Businesses must meet these requirements to avoid fines and other legal consequences.
- Privacy: Encryption provides strong protection for user privacy as it prevents unauthorized persons from accessing personal data. It is particularly important for sensitive data such as financial information, Health data and personal identification information .
So we can state that both methods achieve something similar. They encrypt your data on the one hand during transport and on the other hand on the actual storage medium. With the combination of both elements, the best protection can be guaranteed.