Day 59: Secrets of Cryptographic Salt and Its Importance

Guilherme Soares
3 min readNov 28, 2023


Photo by Jason Tuinstra on Unsplash

“In the recipe of digital security, cryptographic salt is the secret ingredient that turns the ordinary into the uncrackable.” — Cybersecurity Chef

In the vast and intricate world of cybersecurity, the concept of ‘salting’ holds a pivotal position, often overshadowed by more complex cryptographic techniques but no less crucial. Salting, a fundamental concept in cryptography, plays a critical role in safeguarding our digital lives. Today, we’ll unravel the secrets of cryptographic salt and its importance in enhancing security.

Understanding Cryptographic Salt

A ‘salt’ in cryptography is random data that is used as an additional input to a hashing function. The primary purpose of a salt is to add uniqueness to each piece of data being hashed, thereby thwarting various types of cyber attacks.

Why Use Salt?

  • Combating Rainbow Tables: Salts render rainbow table attacks — a method of cracking passwords using precomputed tables — ineffective.
  • Preventing Duplicate Hashes: By adding unique salts to different user passwords, even identical passwords will result in different hashes, enhancing security.



Guilherme Soares

I'm a senior software developer passionate about technology and to share knowledge.