Cryptography is the art & science of keeping messages secure 🔒️
Crypto + Graphy = Secret + Writing
Cryptography is not only used for sending secret messages.
“If you have nothing to hide, you have nothing to fear.”
Governments are trying to limit access to cryptography.
Julius Caesar used a form of substitution cipher
to send messages to his troops.
Make your own Caesar cipher 🖌️
Can you decipher the message in this challenge?
A code is a system of rules to convert information (letters, sounds, images) into another form of representation.
01011100010101001 10100011011010110 01101100101010001 00001101001011101
Can you hack the password in this challenge?
We have intercepted an encrypted message. Can you decrypt it?
Ogo qgm sjw s hjwllq kesjl zsucwj
Modern cryptosystems make heavy use of public key algorithms.
The Diffie–Hellman key exchange algorithm allows to securely exchange keys over a public channel.