Base16

val base16 = Base16 {
    isLenient = true
    lineBreakInterval = 64
    encodeToLowercase = true
}

val text = "Hello World!"
val bytes = text.encodeToByteArray()
val encoded = bytes.encodeToString(base16)
println(encoded) // 48656c6c6f20576f726c6421

// Alternatively, use the static implementaton instead of
// configuring your own settings.
val decoded = encoded.decodeToByteArray(Base16).decodeToString()
assertEquals(text, decoded)