cryptography

For people interested in the mathematical and theoretical side of modern cryptography#### Description From Greek κρύπτω krýpto "hidden" and the verb γράφω gráfo "to write" or λέγειν legein "to speak".

Cryptography is the practice of establishing a secure connection between two parties in the presence of a third party whom you don't want to be able to read your messages.

Cryptographers design algorithms and protocols, which do exactly this (and many other things). They also use a lot of time looking for security holes in existing protocols to make sure they can still be trusted. This is called *cryptanalysis*.

If you want a formal introduction to cryptography, you should read An Introduction to Mathematical Cryptography. The creator of the sub also approve of the Udacity course Applied Cryptography - A Science of Secrets.

Cryptocurrency talk is **only allowed** if it's to **discuss the cryptography** subparts of it.

**we won't solve your ciphers unless you provide us with an algorithm**. If anyone sends you a code or a cipher without telling you how they encrypted it, don't bother posting it on this subreddit - your post **will get deleted**. We redirect you to /r/breakmycode or /r/codes. Thank you for your understanding and for following the rules.

Related Subreddits:

- /r/crypto - Tends to have more in depth topics.
- /r/math - Modern cryptography is a field of mathematics
- /r/compsci - Cryptography is technically a subdisclipline of computer science.
- /r/privacy
- /r/intelligence
- /r/Bitcoin - The Bitcoin protocol is reliant on cryptography.

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