Using the Vigenère Auto Key Cipher (table given below) the keyword is “time”. Convert the plain text “cryptography” into cipher text
- شبكات
- 2021-12-03
- softwareEngineer
Using the Vigenère Auto Key Cipher (table given below) the keyword is “time”.
Convert the plain text “cryptography” into cipher text.
الأجوبة
Answer: vzktmwsvtxtc
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Explanation:
The formula is : Cipher text= (plain text+key) mod 26
Note: we should replace each letter with equivalent number:
A=0, B=1, C=2,……..Y=24, Z=25
Plain text: cryptography
Key: time
c r y p t o g r a p h y
t i m e t i m e t i m e
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