Support for modern stream ciphers like Chacha20

[cayolblake]

What would you like to be added:
Support for modern/lightweight stream ciphers like Chacha20 beside current support of AES.

Why is this needed:
ChaCha20 takes a 256-bit key and a 32-bit nonce and then creates a key stream, which is then XORed with the plaintext stream. In software, it is three times faster than AES, and is well suited to lower-powered devices and in real time communications.

Quoted from -> https://medium.com/asecuritysite-when-bob-met-alice/aes-is-great-but-we-need-a-fall-back-meet-chacha-and-poly1305-76ee0ee61895

Also a nice coffee-time basic article https://blog.cloudflare.com/do-the-chacha-better-mobile-performance-with-cryptography/

[davies]

@cayolblake Agreed, it will be better if we can support ChaCha20. Do you have bandwidth to work on this?

[cayolblake]

I'm no Go developer but I can take a look if you give me some development level hints.

Helped port Chacha20 support on a C++ project some years back and it was a real blast given the ending results.

Is there some Slack/Discord where you guys hang to discuss such stuff?

[cayolblake]

So I took a quick dig and could find pkg/object/encrypt.go where it gets used mostly in the format command and test file.

It appears also only gold-standard Crypto is defined in the Go SDK where it gets used inside the project and introducing Chacha20 would required using external libraries.

Is that how you do it guys?

Am I going right on this or...?

Also some Slack/Discord where discussions go would be really helpful tho.

[davies]

So I took a quick dig and could find pkg/object/encrypt.go where it gets used mostly in the format command and test file.

It appears also only gold-standard Crypto is defined in the Go SDK where it gets used inside the project and introducing Chacha20 would required using external libraries.

Is that how you do it guys?

Yes, we used tons of external libraries.

Am I going right on this or...?

Yes, the important thing would be keep it backward compatible.

Also some Slack/Discord where discussions go would be really helpful tho.

We have a slack workspace, please find the invitation link in README