Hot answers tagged nonce
3
Yes, it is safe. The only requirement for the nonce in Salsa/Chacha is to be unique; being predictable is not an issue, so a counter is fine.
Like CodesInChaos indicated, I believe extending XSalsa20 to XChaCha20 would also work if you want to a larger nonce, but have nothing concrete so will leave the details to him/her.
Only top voted, non community-wiki answers of a minimum length are eligible
