Explore the inner workings of the javax.crypto.Cipher class in Java's cryptography API: understand its provider-based architecture ...

Encrypt plaintext by shifting each alphabetical character by a specified number of positions (the “key”). Decrypt ciphertext by reversing the shift using the same key. Understand fundamental ...

A program which performs a frequency analysis on a sample of English text and attempts a cipher-attack on polyalphabetic substitution ciphers using 2 famous methods - Kasiski's and Friedman's.