Cryptography Basics Terms
I've always had an interest in Cryptography so recently picked up the book "Cryptanalysis: a study of ciphers and their solutions". I figure this is a good place to keep my notes. Cipher: implies a method or system of secret writing. Cyphers used to to transform plain-text into into a cryptography. Cryptogram: Single enciphered message. Encipherment: The process of using a Cipher on plain text to convert to a cryptogram. Decipherment: The opposite process of encypherment, converting the cryptogram into plain text. Decrypt: The process of solving a cryptogram without the use or knowledge of the key. Cipher categories: 1. Concealment Cipher: The secret writing is hidden by a some kind of device. 2. Transposition Cipher: The true letters of the secret message are rearranged in a pattern (key) agreed upon by all parties. 3. Substitution Cipher: Original letters of the plain text are replaced with symbols and the symbols are arranged in the same order as the origina