Question

How to use Base64 to encode and decode a string in Kotlin

Answer 1

import java.util.Base64

fun base64Encode(str: String): String {
    val bytes = str.toByteArray(Charsets.UTF_8)
    
    return Base64.getEncoder().encodeToString(bytes)
}

fun base64Decode(encodedStr: String): String {
    val bytesArray = Base64.getDecoder().decode(encodedStr)
    
    return String(bytesArray, Charsets.US_ASCII)
}

fun main() {
    val base64EncodeStr = base64Encode("Kotlin programming")
    
    println(base64EncodeStr)
    println(base64Decode(base64EncodeStr))
}


 
 
/*
run:
   
S290bGluIHByb2dyYW1taW5n
Kotlin programming
   
*/

 

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