Sash computes a 64bit hash using sdbm or djb2 hash function and outputs a compact string representation.

require 'sash'
Sash.base64 "hi, this is sash - so how was your day ?" #=> "ixeLC8U8SC"
Sash.base64 "hi, this is sash - so how was your day ?", method: Sash::METHOD_DJB2) #=> "HI6K0nlcyH9"

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