Default

The "base64" encoding specified by RFC 4648 section 4, Base 64 Encoding.

Uses "The Base 64 Alphabet" as specified in Table 1 of RFC 4648 for encoding and decoding, consisting of 'A'..'Z', 'a'..'z', '+' and '/' characters.

This instance is configured with the padding option set to PaddingOption.PRESENT. Use the withPadding function to create a new instance with a different padding option if necessary.

Encode operation does not add any line separator character. Decode operation throws if it encounters a character outside the base64 alphabet.

import kotlin.io.encoding.*
import kotlin.test.*

fun main(args: Array<String>) {
//sampleStart
val encoded = Base64.Default.encode("Hello? :> ".encodeToByteArray())
println(encoded) // SGVsbG8/IDo+IA==
//sampleEnd
}