Objective:
Students will continue preparing for competition in the National Cyber League by familiarizing themselves with common cryptographic methods so that they can effectively identify and decrypt encrypted messages and data.
Topics Discussed:
- Cryptography
- Ciphertext
- Plaintext
Links:
This list is maintained as a resource for students competing in the National Cyber League competition to assist in identification and solution of the presented Cryptography puzzles. If you find any good online Cryptography resources in your travels, let me know and I will add them to the list!
Cryptii – A very cool and very fast “modular” decryption tool that lets you run a string of text through several encryption/decryption methods of your choice.
Dcode.fr – An outstanding French website that offers automatic decoding for a large variety of encryptions. Features include a powerful cipher identifier (that automatically recognizes more than 200 ciphers), decoding tools for the Caesar cipher, Vigenere cipher, Polybius’ square, and dozens of other encryptions.
The Black Chamber – A great collection of interactive tools that explain and allow you to decrypt a variety of common (and some uncommon) encoding schemes.
Tools for Noobs: Online Decryption Tool – Decrypts a string using various algorithms (e.g. Blowfish, DES, TripleDES, Enigma).
MD5hashing.net Encryption and Decryption – At md5hashing.net you can hash (encrypt) any string into 66 different hash types. As you probably know – decryption of any hash is impossible, but they offer reverse decryption via our database (~1000M records, and counting).
Splitbrain.org Encoding/Decoding Tools – This tool helps you to quickly run some text through various different encoding/decoding functions available in PHP. Great for a lot of different decoding possibilities rapidly
CodeBeautify.org Encryption/Decryption Tool – A nice, clean tool for decrypting codes that you know the key for, or encrypting codes with your own original key.
SQLite Viewer for Chrome – Chrome plugin for viewing SQLite databases in your browser. Allows opening and editing of SQLite databases without requiring admin access to install.
Posted: February 17th, 2022