What Is Database Encryption? Meaning, Types, and How It Works

Today, every enterprise uses databases to store and manage sensitive information. This involves their customers’ details, payment records, and internal business data. Having all these things stored inside a database helps in the smooth functioning of an enterprise. 

But when you are storing the data into a database, it must be done with care without exposing any information. Because if somehow the database is hacked, the hacker can steal all your data stored inside it and cause heavy losses. That’s why database security is important.

In this blog, we will understand about database encryption and how data encryption helps in securing your database.

What Is Database Encryption?

Database encryption is the process of securing data by transforming the plain, readable data into a coded format, known as “ciphertext”, to make it unreadable. Cryptographic methods are used to perform this transformation. To access the data, the user must use a key to decrypt the data. Database encryption is used by companies to protect sensitive information like customer credentials and financial records from unauthorized users, insider threats, and cyberattacks.

Data doesn’t remain still inside the database. It moves, processes, and sits in storage at different times. Thus, database encryption happens at two main points: Data at rest and Data in transit.

Data at rest

The point at which the data is stationary and is not actively moving is called data at rest. At this point the data is not actively moving. Encrypting data at rest ensures that the data remains protected even if a hacker breaches the server security. The hacker won’t be able to read the data without the correct key.

Data in transit

When data is actively moving from one location to another, it is called data in transit. Encrypting data in transit prevents hackers from intercepting the moving channel and reading the data. This can be done by using secure protocols like SSL/TLS, which creates a secure connection between systems when data is moving.

Why Database Encryption Matters

In recent years, cases of data breaches, data theft, and cyberattacks have been frequently increasing. Therefore, enterprises find it challenging to maintain the data privacy of their customers. People are highly aware of their rights, especially when it comes to data privacy. If their data gets exposed, this can result in the formation of a negative image and hurt the reputation of the organization. 

Governments around the world also understand the importance of data protection. They formulated data protection laws such as GDPR, DPDP Act, HIPAA, and PCI DSS. These laws demand enterprises secure data through proper encryption. Neglecting these laws can lead to heavy fines and losing customer trust.

Benefits of Database Encryption

• Keeps customer details, financial records, and business data safe from theft.
• Makes stolen data useless without the decryption key.
• Helps businesses build stronger trust with their customers.
• Supports compliance with privacy rules such as GDPR, HIPAA, and PCI DSS.
• Reduces the risk of costly fines and lawsuits linked to data breaches.
• Prevents outsiders and employees from viewing information without access rights.
• Protects a company’s reputation by avoiding public data leaks.
• Allows businesses to share data safely across different systems.

Types of Database Encryption

1. Transparent Data Encryption (TDE)

Transparent Data Encryption (TDE) is used to encrypt data at rest — the entire database file. It does it all quietly in the background without changing how users and applications access the data. It is a popular encryption method used by organizations because it is easy to set up and does not require any changes to existing applications.

2. Column-Level Encryption

In column-level encryption, only chosen columns within a table are protected, such as those holding Social Security or card numbers, instead of encrypting everything. It works well when certain data elements need extra safeguards.

3. Field-Level Encryption

Field-level encryption protects single fields of data rather than the database as a whole. This gives organizations precise control over particular items such as OTPs. It is especially helpful when different fields in one record require different protection levels.

4. Symmetric Encryption

Symmetric encryption uses one shared key for both locking and unlocking the information. It performs quickly and works well for large datasets. However, the key must be distributed securely.

5. Asymmetric Encryption

Asymmetric encryption uses a pair of keys: one public and one private. The public key encrypts the information, and the private key decrypts it. While it is slower compared with symmetric methods, it provides added security for protected communication.

6. End-to-End Encryption

End-to-end encryption is a method for secure movement of data. The data is encrypted on the sender’s device and remains encrypted until it reaches its final destination. Once the data is received, it then decrypts on the recipient’s device.

Database Encryption Solutions

Database encryption solutions are tools and services that enterprises can use to implement suitable encryption methods for their specific needs. These solutions allow organizations to single-handedly automate tasks, including key management, data protection, and managing data control and authorization. This reduces human errors, saves time, and makes it easier for IT teams to provide security across large systems.

How AppleShineTech Helps with Database Encryption

At AppleShineTech (Thales implementation partner), we offer enterprises modern, high-grade database encryption solutions. Our solutions include Thales CipherTrust Data Security Platform, Thales Luna HSM, and CipherTrust Cloud Key Manager. These solutions simplify key management, encryption, and data protection across complex business environments. 

Our team of experts understands both the technical and legal sides of data protection. We make it easier for businesses to ensure strong database encryption while complying with the
data protection laws. If you need any guidance on protecting your database, you can contact our team directly at info@appleshinetech.com or call us at +91 7042079410.

View complete details of our database encryption solutions — Click Here.

Conclusion

The volume of sensitive information will keep on increasing, and so will the cyberattacks. Thus, it’s important for businesses to understand database encryption. There are different types of encryption methods that are suitable for protecting different types of data, but knowing which one to select is crucial. Encrypting the right data in the right place keeps systems secure while complying with data protection laws like GDPR, DPDP Act, HIPAA, and PCI DSS. At last, database security is not only just about following data protection standards but also about earning and keeping the trust of your customers.

Also Read:

What is Data Encryption? Meaning, Types, and Benefits Explained

What Is Key Management? A Practical Guide to Securing Encryption Keys