I know that base91, as defined by Joachim Henke, uses these characters:
ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!#$%&()*+,./:;<=>?@[]^_`{|}~"
What steps should one perform in order to convert strings to and from base91?
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I am doing this in Python – Shalva123 Sep 19 '17 at 16:44
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1What did you try so far? – yacc Sep 19 '17 at 16:49
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Nothing really much as I don't know the pattern. I read this : http://base91.sourceforge.net/ – Shalva123 Sep 19 '17 at 16:52
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There's a Python package popping up when I google for it. – yacc Sep 19 '17 at 16:56
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There is a solution here: https://stackoverflow.com/questions/2267362/how-to-convert-an-integer-in-any-base-to-a-string – BoarGules Sep 19 '17 at 19:01
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1the pattern is explained [here](https://www.dcode.fr/base-91-encoding). You can also read the source code at the [homepage](http://base91.sourceforge.net/) – phuclv Apr 09 '18 at 08:47
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Possible duplicate of [Base91, how is it calculated?](https://stackoverflow.com/questions/46978133/base91-how-is-it-calculated) – phuclv Apr 09 '18 at 11:33