Use CrypTool and encrypt your name with 3-DES in the ECB mode under the following two encryption keys: K1 = 11 22 33 44 55 66 77 88 AA BB CC DD EE FF FF FF K2 = 11 22 33 44 55 66 77 88 11 22 33 44 55 66 77 88 Decrypt resulting ciphertexts using 1-DES cipher. Provide any intermediate results that you obtain. One of the keys K1 and K2 enables "fast" decryption with the 1-DES cipher (a single application of 1-DES). Which one? Please explain your answer.
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Step 1
Encrypt the name using 3-DES in ECB mode with the given keys K1 and K2. Let's assume the name is "John Doe" and the resulting ciphertexts are C1 and C2 respectively. Show more…
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Consider the following encryption system: Input -> Monoalphabetic Encryption (Key: K1) -> Row Transposition Encryption (Key: K2) -> Output Suppose the ciphertext Output of the encryption system is: KNTGETRZTXRUQFACTIOSJNZAGTQ The key values are: K1 = QWERTYUIOPLKJHGFDSAZXCVBNM K2 = 627158943 Find the corresponding Input plaintext text. Note that the plaintext is an intelligible English text. Note: You must show all your solution steps.
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