Authentication(machine)

Authentication(machine) - A uthentication (Authentication a...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Authentication (Authentication a computer across a network) (you can find more detail in “Network security” page 215) Authentication each other ==> establish a session(protected by a session key which is usually a separate key.) Authentication human or machine: Sometimes only human , i.e. SSH to a server, you only have to prove you are the user. Sometimes only machine , i.e. DNS servers have to prove to each other who are they. Sometimes both , i.e. a bank employee can only login to a server from a special machine with his username. Difference between authenticating human and machine: Human: can only remember short, guessable password. Machine: can store a high-quality secret, such as a long random-looking number. And it can do cryptography operations. It can also do cryptography operations on behalf of a user. Password-Based Authentication: (This means clear-text password) Guessable, forgettable, eavesdropping, can be given away. Guessing:
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Authentication(machine) - A uthentication (Authentication a...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online