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Cloud Cryptography – A foolproof solution for your cloud security


Cloud computing provides customers a virtual computing infrastructure on which you can store data and run applications. However, cloud computing comes up with new security challenges as cloud operators are expected to manipulate client data without being fully trusted. From facilitating remote access to data to the digitalization of the education system, cloud technology has touched our lives in many ways more than we realize. Today, almost every application we use is powered by cloud computing. If you want to take business online (because of where people are), you need to get your hands on this revolutionary technology as soon as possible.

Data security: a top concern in cloud adoption

As business information and regulations security expand at an unbalanced pace, corporate executives often face privacy and security challenges that they might not aware of. 

Check out – The top Cloud Security issues and how Hackers use them

While encryption is a basic technology that even privacy experts acknowledge as the cornerstone of security; encryption in the Cloud can be intimidating. With so many types of encryption available, small to medium-sized businesses find this approach even more confusing.

Now let us go through how Cloud Cryptography can make your Cloud secure. Starting with some introduction: 

Moreover, Cryptography in the Cloud uses encryption techniques to protect data used or stored in the Cloud. Any data hosted by cloud providers is protected with encryption, allowing users to access shared cloud services conveniently and securely. Cryptography in the Cloud protects sensitive data without delaying the delivery of information.

Cloud cryptography lets you secure critical data beyond your corporate IT environment, where that data is no longer under your control. Cryptography expert Ralph Spencer Power explains this “information in motion and information at rest are best protected by cryptographic security measures. In the Cloud, we don’t have the luxury of having actual, physical control over the storage of information, so the only way we can ensure that the information is protected is for it to be stored cryptographically, with us maintaining control of the cryptographic key.”

How Cryptography can secure Cloud Data?

Cryptography is a method that allows the user to protect information and communications with the help of codes. You may have heard of cryptocurrencies such as Bitcoin and Ethereum. The interchangeable digital means use cryptography to verify asset transfer, control the creation of additional units, and shield transactions.

Though, Cryptography brings the same level of security to cloud services by protecting data stored with encryption. Interestingly, cryptography can guard sensitive cloud data without delaying the transmission of information. Various companies define cryptographic protocols for their cloud computing to maintain a balance between security and efficiency.

Physical control over cloud storage is impossible. The only way to secure a piece of information is to protect it with cryptography while maintaining control over the cryptographic key. There are various types of cryptographic keys available for cloud security.

Cryptography is based on three algorithms:

1. Symmetric-key 
2. Asymmetric-key
3. Hashing

Symmetric algorithms use one key for both encryption and data decryption. It does not require much computational power and works very high in encryption. The symmetrical systems provide a two-way system for users and ensure authentication and authorization unless the user has the key, the encrypted data stored in the Cloud, and cannot be decoded. 

Asymmetric algorithms use different keys for encryption and decryption. Here, each recipient requires a decryption key. This key is often referred to as the recipient’s private key. The encryption key usually belongs to a specific person or entity. This type of algorithm is considered the safest as it requires both keys to access a piece of specific information.

Hashing is one of the most important aspects of blockchain security. In the blockchain, information is stored in blocks and interconnected with cryptographic principles such as a string or chain. When a data block is added to the chain, a unique code or hash is assigned to the specific block. Hashing is mainly used for indexing and retrieving items in a database. It also uses two different keys for encrypting and decrypting a message. It also provides faster data retrieval.


Companies and enterprises need to take a data-centric approach to protect their sensitive information from advanced threats in the complex and emerging environments of virtualization, cloud services, and mobility.

Companies must implement information security solutions that provide consistent protection for sensitive data, including the protection of cloud information through encryption and cryptographic key management. A comprehensive cloud security and encryption platform should provide strong access controls and key management capabilities that enable enterprises to make extensive use of encryption effectively and efficiently to meet security objectives.

Akarshan Narang
Akarshan Narang
Covering the world of Cloud at CMI.


Cloud Management