Recently I came up with something similar: https://gist.github.com/ceving/cb68c8f2392255c5ed4ea65a6a1993e1 https://gist.github.com/ceving/cb68c8f2392255c5ed4ea6

Recently I came up with something similar: https://gist.github.com/ceving/cb68c8f2392255c5ed4ea65a6a1993e1 https://gist.github.com/ceving/cb68c8f2392255c5ed4ea65a6a199... But I use a alphabet with 32 characters: abcdefghikmnopqrstuvwxyz23456789 I prefer 32 characters, because that makes it possible to pack 5 random bytes into a token with 8 characters.