It's safe to restore the system_auth keyspace. The salted_hash in the system_auth.roles table stores the bcrypt salted hashed passwords. The data in this column actually contains both the salt and the hash.

On 15/03/2021 17:00, Who Dadddy wrote:
Hi Everyone,

I need to nuke a cluster and want to restore  the system_auth details from a 
backup - is this possible? Never restored system_auth before and thought there 
was some salt on the encrypted passwords?

Thanks
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