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Go provides built-in support for [base64 encoding/decoding](http://en.wikipedia.org/wiki/Base64). 

    






    
    
        
    

    






    
    
package main

    






    
    
        
    

    






    
    
         This syntax imports the `encoding/base64` package with the `b64` name instead of the default `base64`. It'll save us some space below.
    
import (

    






    
    
	b64 "encoding/base64"

    






    
    
	"fmt"

    






    
    
)

    






    
    
        
    

    






    
    
func main() {

    






    
    
        
    

    






    
    
         Here's the `string` we'll encode/decode.
    
	data := "abc123!?$*&()'-=@~"

    






    
    
        
    

    






    
    
         Go supports both standard and URL-compatible base64. Here's how to encode using the standard encoder. The encoder requires a `[]byte` so we convert our `string` to that type.
    
	sEnc := b64.StdEncoding.EncodeToString([]byte(data))

    






    
    
	fmt.Println(sEnc)

    
YWJjMTIzIT8kKiYoKSctPUB+







    
    
        
    

    






    
    
         Decoding may return an error, which you can check if you don't already know the input to be well-formed.
    
	sDec, _ := b64.StdEncoding.DecodeString(sEnc)

    






    
    
	fmt.Println(string(sDec))

    
abc123!?$*&()'-=@~







    
    
	fmt.Println()

    






    
    
        
    

    






    
    
         This encodes/decodes using a URL-compatible base64 format.
    
	uEnc := b64.URLEncoding.EncodeToString([]byte(data))

    






    
    
	fmt.Println(uEnc)

    
YWJjMTIzIT8kKiYoKSctPUB-







    
    
	uDec, _ := b64.URLEncoding.DecodeString(uEnc)

    






    
    
	fmt.Println(string(uDec))

    
abc123!?$*&()'-=@~







    
    
}

    






    
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