Encryption Techniques Explorer

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Caesar Cipher

A substitution cipher that shifts characters by a fixed number of positions.

Subtype: Substitution Cipher

Key Features:

Simple and easy to implement
Fixed shift key (e.g., shift by 3)
Vulnerable to frequency analysis

Playfair Cipher

A digraphic cipher that encrypts pairs of letters using a 5x5 grid.

Subtype: Digraphic Cipher

Key Features:

Pairs of letters encrypted together
Uses a keyword for the 5x5 grid
More secure than monoalphabetic ciphers but still vulnerable

Vigenère Cipher

A polyalphabetic substitution cipher that uses a repeating key.

Subtype: Polyalphabetic Cipher

Key Features:

Uses multiple Caesar ciphers
Key length increases security
Vulnerable to Kasiski examination and frequency analysis

Rail Fence Cipher

A transposition cipher that encrypts by arranging text in a zigzag pattern.

Subtype: Transposition Cipher

Key Features:

Simple rearrangement of plaintext
Easy to break with pattern recognition
Used in historical contexts for short messages

Hill Cipher

A polygraphic substitution cipher that uses linear algebra for encryption.

Subtype: Matrix Cipher

Key Features:

Uses matrix multiplication for encryption
Requires a square matrix as the key
More secure than simple substitution ciphers