Security Driven .NET is a practical security handbook designed for .NET developers to implement essential security controls in their applications. The handbook covers fundamental cryptographic concepts including random number generators for secure randomness generation, hash functions for data integrity verification, and HMAC (Hash-based Message Authentication Code) for message authentication. It provides guidance on key derivation techniques for generating cryptographic keys from passwords or other input material, ensuring proper key management practices in .NET applications. The resource includes coverage of binary encodings and text encodings, helping developers understand how to properly handle data transformation and encoding operations securely. The handbook serves as a reference guide for implementing security best practices specifically within the .NET development ecosystem, focusing on practical implementation rather than theoretical concepts.