nextBytes

Common
JVM
JS
Native
1.0
open fun nextBytes (
array : ByteArray ,
fromIndex : Int = 0 ,
toIndex : Int = array.size
) : ByteArray

(source)
fun nextBytes (
array : ByteArray ,
fromIndex : Int ,
toIndex : Int
) : ByteArray

(source)

Fills a subrange of the specified byte array starting from fromIndex inclusive and ending toIndex exclusive with random bytes.

import kotlin.math.sin
import kotlin.random.Random
import kotlin.test.assertTrue

fun main(args: Array<String>) {
//sampleStart
val bytes = ByteArray(4)
println(bytes.contentToString()) // [0, 0, 0, 0]

Random.nextBytes(bytes, 1, 3)
// second and third bytes are generated, rest unchanged
println(bytes.contentToString())

Random.nextBytes(bytes)
// all bytes are newly generated
println(bytes.contentToString())

val newBytes = Random.nextBytes(5)
// a new byte array filled with random values
println(newBytes.contentToString())
//sampleEnd
}

Return array with the subrange filled with random bytes.

Common
JVM
JS
Native
1.0
open fun nextBytes ( array : ByteArray ) : ByteArray
(source)
fun nextBytes ( array : ByteArray ) : ByteArray
(source)

Fills the specified byte array with random bytes and returns it.

import kotlin.math.sin
import kotlin.random.Random
import kotlin.test.assertTrue

fun main(args: Array<String>) {
//sampleStart
val bytes = ByteArray(4)
println(bytes.contentToString()) // [0, 0, 0, 0]

Random.nextBytes(bytes, 1, 3)
// second and third bytes are generated, rest unchanged
println(bytes.contentToString())

Random.nextBytes(bytes)
// all bytes are newly generated
println(bytes.contentToString())

val newBytes = Random.nextBytes(5)
// a new byte array filled with random values
println(newBytes.contentToString())
//sampleEnd
}

Return array filled with random bytes.

Common
JVM
JS
Native
1.0
open fun nextBytes ( size : Int ) : ByteArray
(source)
fun nextBytes ( size : Int ) : ByteArray
(source)

Creates a byte array of the specified size , filled with random bytes.

import kotlin.math.sin
import kotlin.random.Random
import kotlin.test.assertTrue

fun main(args: Array<String>) {
//sampleStart
val bytes = ByteArray(4)
println(bytes.contentToString()) // [0, 0, 0, 0]

Random.nextBytes(bytes, 1, 3)
// second and third bytes are generated, rest unchanged
println(bytes.contentToString())

Random.nextBytes(bytes)
// all bytes are newly generated
println(bytes.contentToString())

val newBytes = Random.nextBytes(5)
// a new byte array filled with random values
println(newBytes.contentToString())
//sampleEnd
}