Data Encryption in Swift

Encryption Data encryption is the process of converting plain text data into an unreadable, encoded representation. After encrypted data has been decrypted, users and processes can read and process it. 

  • Encryption converts the data into an unusable form due to this there’s less chance of hacking and data theft. 
  • Plain text is scrambled by data encryption techniques so that only the person with the decryption key can read it. 
  • Personal Data or information that users receive, send, and save on mobile devices, is protected using the Data Encryption technique. 

Types of Data Encryption 

  • There are 2 types of data encryption: Symmetric and Asymmetric encryption. 

Symmetric Encryption- in this encryption a single, private password encrypts and decrypts data. 

Asymmetric Encryption- also known as public-key encryption or public-key cryptography. In this encryption data is encrypted using a shared Public Key and data is decrypted using a private (non shared) key and that must be kept secret.

  • Encryption and safe data handling can be done in a variety of ways. AES256 encryption is one of the most prevalent data security encryption algorithms. 

How to Work with AES256 

Encrypt Mechanism 

  • To encrypt and decode data on iOS, we can utilize the CommonCrypto library. 

Step 1 – Add framework into the project.

Step 2 Add Objective-C bridging header file. 

Step 3 Under the hood, this is a simple Crypter Struct that works with CommonCrypto. 










Step 4 Use crypter where it’s needed.

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