![]() Have a go at decoding these Star Wars quotes. Learn the ASCII binary alphabet with Lego. Find out what your data looks like on the disk. All Unicode characters can be represented soly by UTF-8 encoded ones and zeros (binary numbers). Try one of these secret message activities – our favourites are the folded ones! Binary decoder: Online binary to text translator Computers store instructions, texts and characters as binary data. Make maths fun with this Number line secret code The study of enciphering and encoding (on the sending end), and deciphering and decoding (on the receiving end) is called cryptography from the Greek (kryptos), or hidden and (graphia), or writing. The good news is that it’s simple to decode (and you can use our tool below if you really don’t want to try for yourself). Here are a few more secret code ideas and activities to try: Convert binary ASCII code to text: Get binary byte Convert binary byte to decimal Get character of ASCII code from ASCII table Continue with next byte Example. Pigpen Cipher (decoder, translator, history) If you come across an encrypted message that seems to consist of boxes, dots and the occasional triangle then you’ve probably found yourself an example of Pigpen cipher. The calculator logic is explained below the calculator. It is based on a shift cipher to which is added the use of a keyword that changes the shift at each step. Note that you may need to run it several times to find completely accurate solution. The Vigenre cipher is a polyalphabetic encryption algorithm invented by the French cryptologist Blaise de Vigenre in the 16th century. It uses genetic algorithm over text fitness function to break the encoded text. Now that you’ve had fun with these spy decoder printables, there are lots more super cool secret code activities you can do. This online calculator tries to decode substitution cipher without knowing the key. In decoding, all numbers (from 1 to 26) should be separated by any non. Here all letters are set to lowercase, the English alphabet is used, and all non-alphabet symbols are not transformed. Please remember that the printables at are for personal or individual classroom use only, you may not sell, share, or link directly to these files. A1Z26 is very simple direct substitution cypher, where each alphabet letter is replaced by its number in the alphabet. If you are printing on US ‘letter sized’ paper be sure to select ‘fit’ or ‘shrink to fit’ from your printer options. These printables are A4 sized pdf files, you will need a pdf reader such as adobe acrobat to open them. Don’t forget to send a de-coder sheet to so they can work out what you are saying and write back! ![]() It would be so fun to work together and create a family or class secret code, and then send a coded message to a relative or another class. ![]() You can download the free printable ‘make your own secret code’ sheet here. ![]()
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