Unless I misunderstand what you are trying to do - you can't! 64 bits is 8 bytes. base64 encoding encodes 6 bits per (8 bit) printable character for transmission over a network or some such system. 64 bits require at least 11 base64 characters for encoding - it is not a compression system.

This may be another XY Problem,in which case a description of what you are trying to achieve would be a good idea.

DWIM is Perl's answer to Gödel

In reply to Re: Binary string to base64 by GrandFather
in thread Binary string to base64 by albert

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