What is Password Hashing?

Password hashing is a security technique that transforms text passwords into a unique and irreversible sequence of characters. This process is fundamental for protecting sensitive data and ensuring user account security.

Why Use Password Hashing?

Using password hashing is essential for several reasons:

• Protection against data leaks
• Impossibility to recover the original password
• Compliance with security standards
• Protection of user privacy

How Does Password Hashing Work?

The password hashing process involves:

1. Transformation of text password into a unique character sequence
2. Use of secure cryptographic algorithms (like bcrypt, Argon2, or PBKDF2)
3. Addition of "salt" to increase security
4. Secure storage of the resulting hash

Security Best Practices

To ensure maximum security when working with passwords:

• Use strong and unique passwords for each service
• Never store passwords in plain text
• Use modern and secure hashing algorithms
• Implement two-factor authentication when possible
• Keep your passwords updated regularly

Recommended Hashing Algorithms

The most secure password hashing algorithms include:

• bcrypt - One of the most popular and secure
• Argon2 - Winner of the Password Hashing Competition
• PBKDF2 - Widely used and tested