Question

The task of this exercise is to find out which type of encryption was used for encrypting messages. The possible types are: Shift cipher (e.g., Ceasar's Cipher), Substitution Cipher and Vigenere. For each pair of plaintext and ciphertext find out which method of encryption was used and write down the key that was used for this method. • Plaintext: NEVERTRUSTINSECURITYBYOBSCURITY Ciphertext: ARIREGEHFGVAFRPHEVGLOLBOFPHEVGL • Plaintext: THISISASECRETMESSAGE Ciphertext: GSRHRHZHVXIVGNVHHZTV • Plaintext: GOOD Ciphertext: OVUA

          The task of this exercise is to find out which type of encryption was used for encrypting messages. The possible types are: Shift cipher (e.g., Ceasar's Cipher), Substitution Cipher and Vigenere. For each pair of plaintext and ciphertext find out which method of encryption was used and write down the key that was used for this method.

• Plaintext: NEVERTRUSTINSECURITYBYOBSCURITY
Ciphertext: ARIREGEHFGVAFRPHEVGLOLBOFPHEVGL

• Plaintext: THISISASECRETMESSAGE
Ciphertext: GSRHRHZHVXIVGNVHHZTV

• Plaintext: GOOD
Ciphertext: OVUA

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The task of this exercise is to find out which type of encryption was used for encrypting messages. The possible types are: Shift cipher (e.g., Ceasar's Cipher), Substitution Cipher and Vigenere. For each pair of plaintext and ciphertext find out which method of encryption was used and write down the key that was used for this method.

• Plaintext: NEVERTRUSTINSECURITYBYOBSCURITY
Ciphertext: ARIREGEHFGVAFRPHEVGLOLBOFPHEVGL

• Plaintext: THISISASECRETMESSAGE
Ciphertext: GSRHRHZHVXIVGNVHHZTV

• Plaintext: GOOD
Ciphertext: OVUA

Added by Brenda C.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

Instant Answer

Solved by Expert Aarya B

06/13/2023

Step 1

Plaintext: NEVER TRUST IN SECURITY BY OBSCURITY Ciphertext: ARI REG EHF GVA FRP HEV GLO LBO FPH EVGL - Check if it is a Shift Cipher (Caesar's Cipher): - Compare the first letter of the plaintext 'N' with the first letter of the ciphertext 'A'. - Calculate Show more…

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The task of this exercise is to find out which type of encryption was used for encrypting messages. The possible types are: Shift cipher (e.g., Caesar's Cipher), Substitution Cipher, and Vigenere. For each pair of plaintext and ciphertext, find out which method of encryption was used and write down the key that was used for this method. Plaintext: NEVERTRUSTINSECURITYBYOBSCURITY Ciphertext: ARIREGEHFGVAFRPHEVGLOLBOFPHEVGL Plaintext: THISISASECRETMESSAGE Ciphertext: GSRHRHZHVXIVGNVHHZTV Plaintext: GOOD Ciphertext: OVUA

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