From the course: Ethical Hacking: System Hacking
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Employing rainbow tables
From the course: Ethical Hacking: System Hacking
Employing rainbow tables
- [Instructor] In most cases, a hash value is used to obscure a plain text password. In this segment, we'll explore how malicious actors use rainbow tables to discover a password. First, let's talk about how most systems manage passwords. Password management is used to protect the integrity and confidentiality of the passwords in the system. In most cases, the system generates a hash value of the password, stores the value in a file, and the password is discarded. So why do we use a password hash? Well, let's talk about encryption versus hashing. Encryption uses a key to protect data. When we encrypt a message with a key, we can decrypt the message as long as we have the key. However, hashing is a one-way cryptographic function. You cannot generate the original message from the hash. Now, there are several hash algorithms, but two popular algorithms are SHA-256 and SHA-3. These hash functions are used in different applications, including authenticating a message, monitoring data…
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