![]() ![]() Not only because it gets diluted but because the library uses compression by default, which can offer up to 30% storage savings over the unencrypted version for larger payloads. This overhead is negligible at larger sizes. When using the built-in envelope encryption key provider, you can estimate the worst-case overhead at around 255 bytes. INSERT INTO `articles` ( `title` ) VALUES ( '' ) Copy 2.2.1 Important: About Storage and Column SizeĮncryption requires extra space because of Base64 encoding and the metadata stored along with the encrypted payloads. Run bin/rails db:encryption:init to generate a random key set: ![]() For example, consider auditable Rails consoles that protect encrypted data or check the built-in system to filter controller params automatically. Active Record Encryption enables granular control of data access in your application and services consuming data from your application. Additionally, encryption can prevent developers from unintentionally exposing users' sensitive data in application logs.īut more importantly, by using Active Record Encryption, you define what constitutes sensitive information in your application at the code level. For example, if an attacker gained access to your database, a snapshot of it, or your application logs, they wouldn't be able to make sense of the encrypted information. But why would you want application-level encryption if you are already encrypting your database at rest?Īs an immediate practical benefit, encrypting sensitive attributes adds an additional security layer. A typical example is personally identifiable information from users. 1 Why Encrypt Data at the Application Level?Īctive Record Encryption exists to protect sensitive information in your application. The application will access unencrypted data, but the database will store it encrypted. The encryption layer sits between the database and the application. It works by declaring which attributes should be encrypted and seamlessly encrypting and decrypting them when necessary. Active Record supports application-level encryption. ![]()
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