Cloud cryptography is the process of encrypting data stored in the cloud. Numerous measures are being implemented within cloud cryptography to provide an additional layer of protection for data to prevent it from being breached, hacked, or infected with malware. Cloud providers encrypt all data they store, allowing users to securely and conveniently access shared cloud services. Cloud cryptography protects sensitive data without delaying information delivery.
How does cloud-based cryptography work?
Encryption is the foundation of cloud cryptography, and computers and algorithms are used to convert plaintext into ciphertext. This ciphertext can be decoded with a series of bits utilizing an encryption key and converted to plaintext. One of the following approaches is used to encrypt data:
- Pre-encrypted data synced with the cloud
There is software available to pre-encrypt data before it reaches the cloud, rendering it unreadable to anyone attempting to hack it.
- End-to-end encryption
Senders and receivers exchange messages so that only they can read them.
- File encryption
When data is at rest, it is encrypted so that an unauthorized person attempting to intercept a file will be unable to access the data contained within.
- Encryption of the entire disk
When files are saved to an external drive, they are automatically encrypted. This is the critical method for securing computer hard drives.
How does cryptography protect data in the cloud?
Cloud cryptography provides the same level of security as on-premises cryptography by encrypting data stored in the cloud. It can protect sensitive cloud data without causing data transmission to be delayed. Numerous businesses define various cryptographic protocols for cloud computing to strike a balance between security and efficiency. Cloud Security employs the following cryptography algorithms:
- Symmetric Key Cryptographic Algorithm
This algorithm provides data authentication and authorization by encrypting data with a single unique key that cannot be decrypted with any other key. The most popular Symmetric-key Algorithms used in cloud computing for cryptography are Data Encryption Standard (DES), Triple Data Encryption Standard (3DES), and Advanced Encryption Standard (AES).
- Asymmetric Key Cryptographic Algorithm
This algorithm employs two distinct keys for encryption and decryption to protect data on the cloud. Digital Signature Algorithm (DSA), RSA, and Diffie-Helman Algorithm are used in cloud computing.
Hashing is primarily used for indexing and retrieving items from a database. It also employs two distinct keys for encrypting and decrypting messages.
Advantages of Cloud Cryptography:
- Users retain control over their data. This helps to reduce cybercrime perpetrated by hackers.
- Organizations are immediately notified if an unauthorized person attempts to modify their data. Access is granted to users who possess cryptographic keys.
- Cloud encryption protects data during transmission from one computer to another. It enables organizations to be proactive in their defense against data breaches and cyberattacks and has become a necessity in today’s data-driven world.
- Receivers of the data can determine if the data they have received is corrupted, allowing for an immediate response and resolution of the attack.
- Encryption is one of the most secure methods of storing and transferring data because it complies with the requirements of organizations such as FIPS, FISMA, HIPAA, and PCI/DSS.
CEO and Founder of Mabotse Makofane (Pty) Ltd. Jacob is an avid reader of both business and historical political books. In his spare time he enjoy plays golf and going the picnic with his family for a relaxing afternoon of fresh air and braai meat.