Question
Assume an attacker knows the index of coincidence in plaintext is ICplain = 0.090. Given a long sequence of (ciphertext) characters, e.g., c1c2c3c4c5c6c7c8c9......... which is
Assume an attacker knows the index of coincidence in plaintext is ICplain = 0.090. Given a long sequence of (ciphertext) characters, e.g.,
c1c2c3c4c5c6c7c8c9.........
which is encrypted by Vigenere Cipher, explain how to calculate/estimate the key length by using the index of coincidence.
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Database Administrator Limited Edition
Authors: Martif Way
1st Edition
B0CGG89N8Z
