5.1. Encrypt the message STOP POLLUTION by translating the letters into numbers, applying the given encryption...

 

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5.1. Encrypt the message STOP POLLUTION by translating the letters into numbers, applying the given encryption function, and then translating the numbers back into letters. a) f(p) (p+4) mod 26 b) f(p) (p+21) mod 26 c) f(p) (17p+22) mod 26 5.2. Decrypt these messages that were encrypted using the Caesar cipher (k=3). b) WHVW WRGDB c) HDW GLP VXP a) EOXH MHDQV 5.3. The ciphertext OIKYWVHBX was produced by encrypting a plaintext message using the Vigenre cipher with key HOT. What is the plaintext message? 5.4. Encrypt the message GOOD using the RSA system with p = 13 and q=17, translating each letter into integers and grouping together pairs of integers. 5.1. Encrypt the message STOP POLLUTION by translating the letters into numbers, applying the given encryption function, and then translating the numbers back into letters. a) f(p) (p+4) mod 26 b) f(p) (p+21) mod 26 c) f(p) (17p+22) mod 26 5.2. Decrypt these messages that were encrypted using the Caesar cipher (k=3). b) WHVW WRGDB c) HDW GLP VXP a) EOXH MHDQV 5.3. The ciphertext OIKYWVHBX was produced by encrypting a plaintext message using the Vigenre cipher with key HOT. What is the plaintext message? 5.4. Encrypt the message GOOD using the RSA system with p = 13 and q=17, translating each letter into integers and grouping together pairs of integers.