Update README.md

Author: nuke-web3

README.md

@@ -1,4 +1,12 @@
-# RISC Zero AES demo
+# Verifiable Encryption Demo
+
+Goal: Encrypt private data (plaintext) while committing to the hash of the data and the resulting ciphertext prodced by some encryption. Correct encryption should be _succintly verifiable_ without decrypting the plaintext.
+
+## Running encryption inside a zkVM
+
+This repo contains a minimal [RISC Zero](https://risczero.com/) example of running [ChaCha20](https://en.wikipedia.org/wiki/Salsa20#ChaCha_variant) on some input data & committing to the hash of the input and resulting ciphertext.
+
+## Development
 
 To build all methods and execute the method within the zkVM, run the following
 command: