According to the docs for Mime::Base64, '=' is used to pad a Base64 encoded string to a multiple of four bytes.

For MD5 hashes, they're always a multiple of four bytes anyway, so the '=' isn't needed. This is definitely good to know!

In reply to Re: (tye)Re2: Compact MD5 representation by chipmunk
in thread Compact MD5 representation by jplindstrom

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