Sets the salt used to previously compute AN ALREADY GENERATED HASH.
<p/>
This is provided <em>ONLY</em> to reconstitute a Hash instance that has already been computed. It should ONLY
ever be invoked when re-constructing a hash instance from an already-hashed value.
@param salt the salt used to previously create the hash/digest.
Sets the salt used to previously compute AN ALREADY GENERATED HASH. <p/> This is provided <em>ONLY</em> to reconstitute a Hash instance that has already been computed. It should ONLY ever be invoked when re-constructing a hash instance from an already-hashed value.
@param salt the salt used to previously create the hash/digest.