Are hashed passwords transferred to a server for user authentication?

Summary

– Hashed passwords are used for user authentication
– The hash function converts a password into a fixed-length string of characters
– The hashed password is transferred to the server for verification
– Salt values can be added to make the hashing process more secure

Introduction

User authentication is an essential aspect of cybersecurity. It involves verifying that a person or application accessing a system is authorized to do so. One common method used for user authentication is password-based authentication. However, storing plain text passwords in a database can be vulnerable to attacks such as data breaches and hacking. To mitigate these risks, hashed passwords are often transferred to the server during the user authentication process. In this article, we will discuss how hashed passwords are used for user authentication and how salt values can be added to make the process more secure.

What are hashed passwords?

A hash function is a mathematical algorithm that converts a password into a fixed-length string of characters called a hash or a digest. Hashing is a one-way process, meaning that it is impossible to reverse engineer the original password from its hash. When a user creates an account on a website or application, they are prompted to create a password. The password is then passed through a hash function to generate a unique hash value, which is stored in the server’s database.

How are hashed passwords transferred for user authentication?

When a user logs into their account, they enter their username and password. The entered password is then hashed using the same hash function that was used during account creation. The resulting hash is then compared to the hash stored in the server’s database. If the two hashes match, the user is authenticated and granted access to the system.

Salt values

To make the hashing process even more secure, salt values can be added to the password before it is hashed. A salt value is a random string of characters that is concatenated with the password before it is passed through the hash function. The salt value makes it more difficult for attackers to use precomputed tables of commonly used passwords called rainbow tables, to crack passwords.

Conclusion

Hashed passwords are an effective way of securing user authentication. They ensure that even if a database is breached or hacked, the original passwords cannot be obtained from the hashed values. The use of salt values can further enhance the security of the hashing process by making it more difficult for attackers to crack passwords using rainbow tables. By implementing these measures, businesses and organizations can protect their systems and user data from cyber attacks.

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