# What is Password Authentication?

*Development · Last updated: November 6, 2026*

It is the process of using a password to verify the user's identity when logging into the system.

## Overview

Password authentication is a method of checking the secret password set by a user to determine whether they have the right to access a digital system. The system asks the user to prove that they are who they claim to be. The entered password is matched against its securely stored encrypted equivalent in the database.

***Analogy:** It is similar to inserting a key into the lock on a door and turning it to enter a house. If the key is correct, the door opens; if it is wrong, you stay outside.*

## How it works

The username and password are typed into the relevant screen and submitted. The software on the server side does not store the password directly as plain text, but instead passes it through secure mathematical hash functions. If the hash of the incoming password matches the hash in the database, access is granted.

## Where it is used

It is used as a basic security layer in website member logins, computer login screens, cloud server management panels, and corporate network accesses.

## Commonly confused with

It can be confused with authorization. Password authentication proves who you are, while authorization determines what you can access once you enter the system.

## Questions and answers

**How are passwords stored in the database?**

For security reasons, they are never stored as plain text. They are irreversibly encrypted using special hashing algorithms and salting techniques.

**Is it secure enough on its own?**

Today, since passwords are easy to steal or guess, they are usually supported by additional measures such as two-factor authentication.

## Related terms

- [SSO](https://trescout.com/en/dictionary/sso/)
- [OIDC](https://trescout.com/en/dictionary/oidc/)
- [RBAC](https://trescout.com/en/dictionary/rbac/)
- [Security Scanner](https://trescout.com/en/dictionary/security-scanner/)

This explanation was written in plain language for TreScout with AI and **machine-translated** from the Turkish original · the Turkish version prevails. If something looks wrong or missing, write to [hello@trescout.com](mailto:hello@trescout.com). [Read in Turkish →](https://trescout.com/dictionary/password-authentication/)

---
Source: TreScout Dictionary · https://trescout.com/en/dictionary/password-authentication/