cryptbrau
Simple browser-based symmetric encryption. Uses the simple-encryptor library on npm.
Also, boy howdy. Can't get browserify to do what I want. So for now, whatever.
Example
Basic ES6 class:
var libEncryptor = cryptbrau({Key:'SomeVerySecureKeyReally', Salt:'SomeKindOfSalt'});
var tmpMessage = 'ThisIsAMessage.';
var tmpEncryptedMessage = libEncryptor.encrypt(tmpMessage);
console.log('Message: '+tmpMessage);
console.log('Encrypted: '+tmpEncryptedMessage);
console.log('Decrypted: '+libEncryptor.decrypt(tmpEncryptedMessage));