Agnieszka Samborek and Complex of Electrical School No1 students have been awarded the Quality Label by the Poland National Support Service. Congratulations to the Polish team. Thanks for your important contribution and cooperation to the Mysterious Ciphers project.
Thursday, May 20, 2021
Wednesday, May 12, 2021
FIRST QUALITY LABEL FROM SLOVAKIA
Tuesday, May 11, 2021
FINALLY WE SAID GOODBYE! (April 2021)
At the end of the our project we said goodbye to all partners at the our last online meeting. We were glad to work together on the “Mysterious Ciphers” project. And we agreed to meet in new projects.
WE MADE INTERNATIONAL ONLINE CIPHER COMPETITION(March 24, 2021)
We held an online cipher competition via zoom on March 24, 2021. 64 project partners from 8 country partipicated to competition. We enjoyed from this meeting with the Kahoot competition.
NATIONAL TEAMS HANDMADE CIPHER TOOLS/ CIPHER EVENTS
WE MADE HANDMADE CIPHER TOOLS WITH INTERNATIONAL TEAMS AND PRESENTED OUR WORKS WITH EXHIBITIONS
exhibition video
FIRST ONLINE MEETING TURKEY (Kırıkkale) & CROATIA (15.02.2021)
WE DEVOLOPED OUR OWN UNIQUE ENCRYPTION METHODS
National teams devoloped their own unique encription methods and presented their methods through online meetings. At each meeting, two country team introduced their unique method and other countries attended the meetings as listener. After all meetings were completed, we created wakelet collection with all the presentataions.
STUDENTS DESIGNED THE PROJECT LOGO/POSTER
WE BROKE THE CODES
Romanian teacher Monica HULEA prepared
code breaking tasks. The students broke these codes. These tasks come from the Bebras Computational Thinking
Challenge. Bebras is an international
initiative that aims to promote Informatics and computational thinking
among school students at all ages. The idea of Bebras Competition was
born in Lithuania, by Prof. Valentina
Dagiene from University of Vilnius.
WE PLAYED THE MAZE GAME
Slovak teacher Monika POLANSKA prepared maze game.The students found the right way and deciphered a famous math sentence encrypted with numbers on the way . The students who first solved the maze groups were awarded with the “fastest” badge.
WE PLAYED THE ESCAPE GAME
Turkish teacher Nevin BİLGİÇLİ prepared the escape
game. The students decrypted secret clues and solved the mysterious event. The
students who decyrpted all clues and solved the event were awarded with “code breaker” badge.
COUNTRIES WROTE ENCRYPTED LETTERS TO EACH OTHER
Each school wrote encrypted
letters about new year wishes to the partner school . Students decrypted
letters. And then we created “common
encrypted letters e-book”. Our book consists of 60 pages and includes 10 county
letters and New year/Christmas
decorations.
WE PRESENTED OTHER ENCRYPTION METHODS
Each national team prepared presetations about the modern or historical encrytion methods. And they prapared the small games for partner students about these methods.
EVENT WITH VIGENERE CIPHER- Sound from my country
Pupils learned “Vigenere Cipher” method. 103 project student encrypted a song/singer name from their country and shared video of this song. And then each student deciphered the name of a song/singer from other countries.
ENCRYPTION METHOD 5- VIGENERE CIPHER
* After most monoalphabetic ciphers were broken with the frequency analysis method, the search for a safer method has begun.
* French cryptographer Blaise de Veginere developed Veginere cipher in 1586.
* This method is a derivative of the Caesar technique. It's differenses from Caesar is that it is shifted according to an unstable periodic number sequence. Therefore, repeating letters correspond to another letter each time. In other words, these cipher cannot be decrypted using the frequency method.
* Curriculum topics related to Vigenere Cipher/ Aim: Sequences, Matrix, Permutation
HOW DOES IT WORK?
* A square matrix board of type nxn is used for the alphabet with n letters.The standart table is as follows.
Vigenere | PLAİNTEXT | ||||||||||||||||||||||||||
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ||
KEY TEXT | A | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
B | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | A | |
C | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | A | B | |
D | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | A | B | C | |
E | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | A | B | C | D | |
F | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | A | B | C | D | E | |
G | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | A | B | C | D | E | F | |
H | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | A | B | C | D | E | F | G | |
I | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | A | B | C | D | E | F | G | H | |
J | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | A | B | C | D | E | F | G | H | I | |
K | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | A | B | C | D | E | F | G | H | I | J | |
L | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | A | B | C | D | E | F | G | H | I | J | K | |
M | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | A | B | C | D | E | F | G | H | I | J | K | L | |
N | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | A | B | C | D | E | F | G | H | I | J | K | L | M | |
O | O | P | Q | R | S | T | U | V | W | X | Y | Z | A | B | C | D | E | F | G | H | I | J | K | L | M | N | |
P | P | Q | R | S | T | U | V | W | X | Y | Z | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | |
Q | Q | R | S | T | U | V | W | X | Y | Z | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | |
R | R | S | T | U | V | W | X | Y | Z | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | |
S | S | T | U | V | W | X | Y | Z | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | |
T | T | U | V | W | X | Y | Z | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | |
U | U | V | W | X | Y | Z | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | |
V | V | W | X | Y | Z | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | |
W | W | X | Y | Z | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | |
X | X | Y | Z | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | |
Y | Y | Z | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | |
Z | Z | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y |
Vigenere Board (Tabula Recta)
There is a common key text that the sender and recipient know. From the first row (first horizontal) find the letters of the plain text, from the first column (first vertical) find the letters of the key text, and then combined. Intersection points create the encrypted text.
EXAMPLE
ENCRYPTION
If you want to encrypt " HELP ME QUICKLY PLEASE" plaitext with the "NİCE DAY"
Plaintext | H | E | L | P | M | E | Q | U | I | C | K | L | Y | P | L | E | A | S | E |
Keytext | N | I | C | E | D | A | Y | H | E | L | P | M | E | Q | U | I | C | K | L |
Ciphertext | U | M | N | T | P | E | O | B | M | N | Z | X | C | F | F | M | C | C | P |
You find "UMNTPEOBMNZXCFFMCCP" ciphertext.
Method:Vigenere, Plaintext: HELP ME QUICKLY PLEASE, Keytext= NICE DAY, Ciphertext= UMNTPEOBMNZXCFFMCCP
DECRYPTION
Decryption can make simularly with Vigenere board. If you want decrypt ciphertext "UMNTPEOBMNZXCFFMCCP" with keytext "NİCE DAY"
Ciphertext | U | M | N | T | P | E | O | B | M | N | Z | X | C | F | F | M | C | C | P |
Keytext | N | I | C | E | D | A | Y | H | E | L | P | M | E | Q | U | I | C | K | L |
Plaintext | H | E | L | P | M | E | Q | U | I | C | K | L | Y | P | L | E | A | S | E |
You find Plaintext: HELP ME QUICKLY PLEASE
THIRD QUALITY LABEL FROM FRENCH GUIANA
Magali Kervennic and Lycee Balata students have been awarded the Quality Label by the French National Support Service. Congratula...
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Turkey presented “ KHS Binomial Cipher “ method and Croatia presented ” Hiding message to picture with Python program ” method .
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Pupils learned “ Polybius and Mixed Polybius Cipher” methods. 127 project student encrypted a sentence about their country. padlet ink1 , ...
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Students designed the project logo/poster . We created a wakelet collection with the design of all students. wakelet collection link