ASP.NET Core MVC Interview Question #124
What is the Data Protection system in ASP.NET Core?
Authentication, Authorization, Security & State Management Mid-Level Intermediate
Quick Interview Answer
ASP.NET Core Data Protection provides cryptographic APIs used by framework features and applications to protect data with encryption and integrity checks. Authentication cookies, TempData providers, and anti-forgery infrastructure rely on data-protection capabilities.
Detailed Explanation
ASP.NET Core Data Protection provides cryptographic APIs used by framework features and applications to protect data with encryption and integrity checks. Authentication cookies, TempData providers, and anti-forgery infrastructure rely on data-protection capabilities.
In multi-instance or containerized production environments, the key ring must be managed so application instances that need to share protected data can access compatible keys. Key storage and protection should be designed as part of deployment architecture.
Code Example
builder.Services.AddDataProtection();
// Application code can inject IDataProtectionProvider
// when it has a legitimate need to protect data.