Learn Cryptography

To put it simply: the FCC is not serving the public interest, but rather is serving the interests of the very few but massive vertically integrated ISPs that support the current agency’s agenda.

It is worth reflecting on just how wildly unsupported by the public and wrong the FCC is on its effort to end an Open Internet. #NetNeutrality (1/16)

We've filed a joint lawsuit with @ACLU over searches of cell phones & laptops without a warrant by border agents eff.org/cases/alasaad-…

AES-256 is considered among the top ciphers for symmetric key encryption - try it out with our AES Encryption tool. learncryptography.com/tools/aes-encr…

In case you want to protect your anonymity online when organizing for a protest, here's a guide to Tor for Windows: ssd.eff.org/en/module/how-…

Having strong, unique, and secured passwords is a necessity - using a password manager can make it easy. learncryptography.com/computer-secur…

Security isn't something you buy - it's knowledge you arm yourself with. Check out our computer security checklist: learncryptography.com/computer-secur…

Big O Notation is a way of expressing how well an algorithm performs as the input data grows - it's time complexity. learncryptography.com/big-o-notation/

The Birthday Problem in mathematics concerns the probabilities of collision between two items in a set of multiple. learncryptography.com/the-birthday-p…

@macbraughton Sorry about that, we were in the process of switching servers. Should be back online now!

A Hash Collision Attack is performed by finding two inputs to a hash function that produce the same hash result. learncryptography.com/hash-collision…

We often consider 256-bit encryption 'secure', but why is 2^256 the magic number for secure encryption? learncryptography.com/why-is-2256-se…

The Caesar Cipher is one of the oldest encryption techniques - a simple alphabet shift across an entire message. learncryptography.com/caesar-cipher/

Rainbow Tables were used to speed up password cracking, until salting and more secure hashing algorithms came around. learncryptography.com/rainbow-tables/

Online services store password hashes instead of actual passwords, as storing plaintext passwords is needlessly risky learncryptography.com/password-stora…

Frequency Analysis is used on classical substitution ciphers to decode a message using the frequency of it's letters. learncryptography.com/frequency-anal…

FTP: A commonly used but less-than-secure protocol from the early ages of the internet. learncryptography.com/file-transfer-…

The Two-Square Cipher was created as a simple alternative to Four-Square, though still more secure than the Playfair. learncryptography.com/two-square-cip…

The Four-Square cipher is a slightly more secure variant of the Playfair Cipher, using two keys intead of one: learncryptography.com/four-square-ci…