COMPUTER FUNDAMENTALS

Detailed explanation-1: -The essential technique is anagramming – rearranging the ciphertext letters to “make sense.” The key to the cipher is the pattern of rearrangement.

Detailed explanation-2: -In cryptography, a substitution cipher is a method of encrypting in which units of plaintext are replaced with the ciphertext, in a defined manner, with the help of a key; the “units” may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth.

Detailed explanation-3: -Substitution Ciphers. Substitution ciphers encrypt the plaintext by swapping each letter or symbol in the plaintext by a different symbol as directed by the key. Perhaps the simplest substitution cipher is the Caesar cipher, named after the man who used it.

Detailed explanation-4: -In cryptography, a transposition cipher is a method of encryption by which the positions held by units of plaintext (which are commonly characters or groups of characters) are shifted according to a regular system, so that the ciphertext constitutes a permutation of the plaintext.

Detailed explanation-5: -Get a scytale and a strip of parchment. Wrap your parchment around your scytale until the stick is covered. Write your message along the length of the stick, one character per pass of the paper. Unwrap the scytale and send the scrambled message to a friend with the same-diameter stick. More items