3. Hashing and MAC

The key concepts are: MD2. MD4. MD5. SHA-1. Salting. Collisions. Murmur and FNV. Bloom Filter. LM Hash. SHA-3. Bcrypt. PBKDF2. Open SSL Hash passwords. One Time Passwords. Timed One Time Password (TOTP). Hashed One Time Password (HOTP). HMAC.

What you should know at the end of unit?

How the lengths of the hashes vary with the number of bits in the hash.
How we can calculate the strengths on passwords.
Understand how salt is applied to the hashing process.
Define how collisions can occur within hashing.
Implement hash cracking methods (John the Ripper and Hashcat).
Defines the usage of signed hashes (eg HMAC).
Outlines the usage of OTP and Timed Passwords.

What you should know at the end of unit?

How the lengths of the hashes vary with the number of bits in the hash.
How we can calculate the strengths on passwords.
Understand how salt is applied to the hashing process.
Define how collisions can occur within hashing.
Implement hash cracking methods (John the Ripper and Hashcat).
Defines the usage of signed hashes (eg HMAC).
Outlines the usage of One-time Passwords (OTP) and Timed Passwords.

Presentations

Unit 3 Presentation (PDF) - Hashing: here
Unit 3 Presentation (video) - Hashing: here
Unit 3 Presentation (Doodle) - Hashing: here

Videos

The voice over lecture is here:

Demos

Here are a few demos:

OpenSSL hashing methods: here
Blake, MD5, SHA1, SHA256: here
Blake 3: here
Benchmarks: here
sha512crypt (6) SHA512 (Unix): here