WTF is a KDF?

5/14/2023

This blog post explores the concept of a Key Derivation Function (KDF) and its importance in cryptography and data security. It explains that a KDF is used to derive a cryptographic key from a password or passphrase, ensuring that it is strong and secure. The blog discusses the purpose of a KDF, which is to slow down a potential attacker by making it computationally expensive to crack the derived key. It also delves into different types of KDFs, including PBKDF2, bcrypt, and Argon2, explaining their differences and trade-offs. The post emphasizes the significance of using a well-designed and robust KDF in protecting sensitive data and safeguarding user information.

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