How can I convert a hash (%hash) to a string ($string) such as so ($string) can be converted back to (%hash)?

Im currently designing a milter using Sendmail::PMilter , but the getpriv/setpriv can only store one single value for state tracking across callbacks, so to store "multiple" values into this, I need to collapse the hash into a string, and then expand the string when being used/changed.

I googled and found multiple examples of Data::Dump and Data::Dumper, but that only allows one-way conversion from hash to string, not back again.

Note that the conversion function must be "safe" against anything that can be present in strings and hashes.

In reply to How can I convert hash to string and back again? by sebastiannielsen2

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