After reading and review sslides on chapter 10 and 11 - write a paper outlining a position on the use of Quantum cryptography. What problem is quantum cryptography solving? explain. Detail how quantum cryptography works and compare it to any predecessor.
Anveshh
chapter10_slides1.pptxFundamentals of Cryptography Chapter 10
Welcome to Lesson 13 of Cryptography.
1
Agenda
What is quantum cryptography
What is the impact of quantum cryptography?
How will this new technique change the field?
How the process works?
How the process differs from previous techniques?
2
What is quantum cryptography?
Quantum cryptography is an application of quantum mechanics.
Quantum mechanics is a field of physics that deals with the study of matter at the atomic and subatomic levels.
3
What is quantum cryptography?
Quantum cryptography is also know as quantum key distribution (QKD)
Using QKD, two parties can create a random bit string to use as key to encrypt/decrypt messages.
4
What is the impact of the new field?
It will change the complexity of current cryptosystems.
It will require a reevaluation of current cryptosystems
5
How will this change cryptography?
The new systems will be much faster.
Quantum theory operates at the speed of light. Current symmetric and asymmetric algorithms require complex mathematics.
It will allow for much larger keys.
6
How does the process work?
QKD is a kind of quantum encryption in which the secret password is shared between two distant parties.
The key is distributed as bits of quantum data. So that if an eavesdropper tries to intercept the message, the bits will be disturbed.
If the key is not disturbed, it can be used to encode messages that are sent in the quantum communication system
7
How does the process work?
8
Potential weaknesses?
Supposedly unbreakable!
Three potential weaknesses
The initial secrecy of the password
The correctness and completeness of the quantum theory
The reliability of the devices in the quantum communication systems
The costs associated with building equipment to detect the photons at a reasonable cost.
9
