Add TikZ for Cryptographers (#136)

README.md

@@ -430,6 +430,7 @@ encryption library providing MD5, SHA1, SHA2 hashing and HMAC functionality, as
 - [IACR](https://www.iacr.org/) - The International Association for Cryptologic Research is a non-profit scientific organization whose purpose is to further research in cryptology and related fields.
 - [Learn Cryptography](https://learncryptography.com/) - Dedicated to helping people understand how and why the cryptographic systems they use everyday without realizing work to secure and protect their privacy.
 - [Subreddit of Cryptography](https://www.reddit.com/r/cryptography/) - This subreddit is intended for links and discussions surrounding the theory and practice of strong cryptography.
+- [TikZ for Cryptographers](https://www.iacr.org/authors/tikz/) - A collection of block diagrams of common cryptographic functions drawn in TikZ to be used in research papers and presentations written in LaTeX.
 - [WebCryptoAPI](https://www.w3.org/TR/WebCryptoAPI/) - This specification describes a JavaScript API for performing basic cryptographic operations in web applications, such as hashing, signature generation and verification, and encryption and decryption.
 
 ## Contributing