Key words: Intercept | Decipher | Translate

Slides:



Advertisements
Similar presentations
For thousands of years people have been doing just that.
Advertisements

Effective Use Of The Telephone Notes Before Calling 1 – If a child answers - Ask for Mum or Dad or Mr or Mrs 2 – If no answer – Mark on list for subsequent.
The End of the War The Last Hundred Days
By Megan Goatley. history one of the last of a top World War Two codebreaking team at Bletchley Park codebreaker Jerry Roberts dies aged 93, Capt Roberts,
Cryptology Terminology and Early History. Cryptology Terms Cryptology –The science of concealing the meaning of messages and the discovery of the meaning.
 Caesar used to encrypt his messages using a very simple algorithm, which could be easily decrypted if you know the key.  He would take each letter.
 starter activity Churchill said that the Battle of the Atlantic was ‘the only thing that frightened me.’ What do you think he meant? Click picture to.
A Glimpse of the History of Cryptography
CS 104 Introduction to Computer Science and Graphics Problems Software and Programming Language (2) Programming Languages 09/26/2008 Yang Song (Prepared.
Section 3.6: An Introduction to Cryptography
When the Battle Started  The battle started on June 10, 1940 but the real air war didn’t start until August 12,  It involved the British (RAF)
Alan Turing and Code Breaking
Introduction to Programming ICS2O Findlay. Learning Goals  We will learn  The definitions of a computer, program and programming language.  The different.
Q.
Encryption: A Brief History Author: Margery Waldron.
Produced in conjunction with Tom Briggs, Education and Outreach Officer at Bletchley Park.
Information Security and Secret Messages. Agenda Information Assurance Program Value of Information Secret Messages –Steganography –Caesar Cypher –Keyword.
Enigma Plymstock School History Department. The Battle of the Atlantic The Battle of the Atlantic Since the evacuation of the British Army from the beaches.
The World Of Quizlet Making tools that let you study anything, for free.
CRYPTOGRAPHY. WHAT IS PUBLIC-KEY ENCRYPTION? Encryption is the key to information security The main idea- by using only public information, a sender can.
Encryption CS110: Computer Science and the Internet.
Your Mission Objectives
The War in the Pacific. Coral Sea Clash Yamamoto wants to rule the Pacific. Yamamoto wants to rule the Pacific. First Carrier vs. Carrier battle. First.
Functional Skills Code Breaking LO: Use logic and frequency analysis to read and write in code.
Code- and cipher-breaking have been in operation for centuries. However, cryptanalysis – the art of deciphering encoded messages – took on a new importance.
The First Year Of The War Hitler set off the war by attacking Poland (Sept. 1, 1939) The Soviet Union took over many countries in Eastern Europe The Maginot.
Active Listening Study Skills 2 nd period Mrs. Sheppard.
Lecture 3 Page 1 CS 236 Online Basic Encryption Methods Substitutions –Monoalphabetic –Polyalphabetic Permutations.
Code Making/Breaking. What methods have you seen for encoding secret messages?
Key words: Prototype | Blueprint | Valve
Introduction to programming
Egyptian Writing Hieroglyphics.
CIT 380: Securing Computer Systems
Binary 1 Basic conversions.
Key words: Apprentice | Invention | Colossus
Chapter 2 Basic Encryption and Decryption
Key words: Cryptography | Binary | Cipher
Introduction To Cryptography
Encryption.
Warm-up 1. Find A-1 , A = 2. Solve AX = B when B =
GERMANY vs. SOVIET UNION
The Battle of Britain.
Basic Encryption Methods
Networks Encryption.
Who was Alan Turing? Alan Turing played a role in deciphering the messages encrypted by the German Enigma machine. He took the lead in a team that designed.
In this lesson we will understand:
Lesson 5: Simple Encryption
TRANSLATORS AND IDEs Key Revision Points.
How do you want to be treated by others?
History of Cryptography
Enigma Machine.
Tea Boyarchuk History 12 December
User access levels, Passwords, Encryption, Cipher, Key
Number and String Operations
Outline What is data encryption? Cryptanalysis
LO: Use logic and frequency analysis to read and write in code.
Cryptography “The Secret Code Language”
Substitution Codes By Sarah Bonnell.
Encryption with Keys and Passwords
Lesson 7: Simple Encryption
Reading Master Student Map
Communication.
Enigma Cipher Machine By: Amber Churchwell.
Introduction to programming
Reading to Synthesize Information
WORLD OF WONDERS : THE ENIGMA MACHINE
Basic Encryption Methods
Basics Of Symmetric Encryption
Cryptanalysis Network Security.
Use your keywords when responding to the teacher to double your score.
Presentation transcript:

Key words: Intercept | Decipher | Translate 05 – Cracking the Code Key words: Intercept | Decipher | Translate

Humans and machines During the Second World War people worked tirelessly to help to put an end to the conflict. The Allies (the British) wanted to crack the German coded messages to gain a war advantage. Even though the Colossus was fast, humans were still needed to operate the machines and to finish off the deciphering process. An ADVANTAGE is an opportunity to put yourself in a better position.

Keyword: Intercept Intercept means to obtain something that is meant to be for someone else. In the Second World War, the British intercepted messages from the Germans. The intercepted messages contained secret battle information. Working out what they said was very important.

Keyword: Decipher Decipher means to convert a coded message or signal to a normal, readable message. Colossus helped to decipher cryptic messages. The British noticed that messages sometimes started or ended with the same words. This provided clues to decipher the rest of the message. Looking out for common letters is also a good technique to decipher a message. Teachers’ Notes: The British noticed that important messages sometimes started or ended with the same words e.g. “Adolf Hitler, Führer”. The letters T, E, and I are common letters in English (This is why they have a low score in Scrabble) Other deciphering techniques include looking out for common letters and patterns like double letters.

Key word: Translate Translate means to convert one language into another. Remember that not only were the Tunny messages encrypted but they were also in a foreign language. The cryptographers had to be good at translating German.

Become a code breaker Colossus didn’t fully crack the codes, it needed people to help. Can you use code breaking techniques to help to decipher the cryptic messages as fast as possible? Understanding how often letters in the alphabet are used helped the cryptographers to figure out a pattern in the encrypted messages.