A shitty thing I did in order to pgp sign a tweet.

baseutf8

package main

import (
	"fmt"
	"io/ioutil"
	"math/big"
	"os"
)

func main() {
	b, _ := ioutil.ReadAll(os.Stdin)
	i := 0
	j := len(b)-1
	for j >= i {
		b[i], b[j] = b[j], b[i]
		i++
		j--
	}
	var bi big.Int
	bi.SetBytes(b)
	blen := uint(bi.BitLen())
	var x uint
	xi := make([]rune, 0)
	for i := uint(0); i < blen; i++ {
		x = bi.Bit(int(i)) | (x << 1)
		if (i%14) == 0 && i != 0 {
			xi = append(xi, 0x20000+rune(x))
			x = 0
		}
	}
	if x != 0 {
		xi = append(xi, 0x20000+rune(x))
	}
	fmt.Println(string(xi))
}