Base 64 encode and decode a byte array in Golang. https://play.golang.org/p/X4z9zq0nXlW

base64.go

package main

import (
	"fmt"
	"encoding/base64"
)

func main() {
	str := "Hello, playground :)"
	
	b := Base64Encode([]byte(str))
	fmt.Printf("%q\n", b)
	
	msg, err := Base64Decode(b)
	if err != nil {
		fmt.Println(err)
		return
	}
	
	fmt.Printf("%q\n", msg)
}

func Base64Encode(message []byte) []byte {
	b := make([]byte, base64.StdEncoding.EncodedLen(len(message)))
	base64.StdEncoding.Encode(b, message)
	return b
}

func Base64Decode(message []byte) (b []byte, err error) {
	var l int
	b = make([]byte, base64.StdEncoding.DecodedLen(len(message)))
	l, err = base64.StdEncoding.Decode(b, message)
	if err != nil {
		return
	}
	return b[:l], nil
}

I am trying to Decode a base64 encoded byte array. But when I convert it to a string variable and pass it to DecodeString() function, then it always gives me the CorruptInputError. But when I get the string value and pass it into the DecodeString() function, then it does the decoding smoothly.

Any help is much appreciated...