Pigpen Cypher Cipher
Symbol Substitution Cipher
Cryptography Encryption
Decryption Algorithm

 

A method of encoding information so that it can only be accessed by authorized parties. Also known as the Masonic Cipher, it is a substitution cipher used in cryptography that replaces letters with symbols and shapes.
A cipher that replaces each letter in the plaintext with a different letter, symbol, or number in the ciphertext. A graphical representation used to represent something else, such as a letter or number in a cipher.
The process of converting plaintext into ciphertext using a cryptographic algorithm and a key. The practice of securing communication from unauthorized access.
A sequence of steps or instructions used to solve a problem or perform a task. The process of converting ciphertext back into plaintext using a cryptographic algorithm and a key.

 

Plaintext Ciphertext
Key Symbol Set
Repetition Monoalphabetic Cipher
Polyalphabetic Cipher Key Length

 

The encrypted message or data that is the result of an encryption process. The original message or data that is to be encrypted.
The set of symbols used in a cipher to represent plaintext letters. A secret value used to encrypt or decrypt information.
A substitution cipher in which each letter is replaced with a single, fixed symbol throughout the ciphertext. The practice of using the same key repeatedly in a cipher.
The length of the key used in a cipher, typically measured in bits. A substitution cipher in which the symbol used to replace a letter varies depending on its position in the plaintext.

 

Cryptanalysis Caesar Cipher
Shift Value Alphabet
Modulus Operator Brute-Force Attack
Frequency Analysis Vigenere Cipher

 

A type of substitution cipher in which each letter in the plaintext is shifted a certain number of places down the alphabet. The process of analyzing encrypted information to decipher the original message or data.
A set of letters or symbols in a fixed order used to represent the basic sounds of a language. The number of places by which each letter in the plaintext is shifted in the Caesar Cipher.
An attack on a cipher by trying every possible key until the correct one is found. A mathematical operator used to perform division with remainder, often denoted by the percent symbol (%).
A polyalphabetic cipher that uses a keyword consisting of a repeating pattern of letters to encrypt a message. The study of the frequency and distribution of letters or symbols in a text to help break a cipher.

 

Transposition Cipher Rail Fence Cipher

 

A type of transposition cipher in which the plaintext is written diagonally on a criss-cross pattern. A cipher that rearranges the letters or symbols of a message without changing them.