[sayhello]

Firefox is probably slower because it uses the javascript implementation of the hashing algorithm:

https://github.com/nimiq-network/core/blob/master/src/main/p...

Chrome implements the WebCrypto API https://developer.mozilla.org/en-US/docs/Web/API/Web_Crypto_...

I think it uses this interface: https://cs.chromium.org/chromium/src/third_party/WebKit/Sour...