How is hashing used in security?

What is hashing and how does it contribute to security?

Hashing is a process that transforms data into a fixed-size string of characters, which is typically a hash code. It helps ensure data integrity and security by making it difficult to reverse-engineer the original data.

Can you explain how hashing is used in password storage?

Certainly! When storing passwords, systems often hash them before saving. This way, even if the database is compromised, the actual passwords remain secure since the hashes cannot be easily reversed.

What are some common hashing algorithms used in security?

Common hashing algorithms include SHA-256, SHA-1, and MD5. However, MD5 is considered outdated and less secure.

How does hashing help in data integrity?

Hashing helps in data integrity by allowing users to verify that data has not been altered. If the hash of the data matches the original hash, the data is intact.

Are there any vulnerabilities associated with hashing?

Yes, vulnerabilities can arise from weak hashing algorithms or improper implementation, such as using the same salt for multiple passwords.