Cifrado simétrico AES (Advanced Encryption Standard) en Kotlin (añadiendo una clave en Base64) | Operating systems, scripting, PowerShell and security

Criptografía, Kotlin

import java.nio.charset.StandardCharsets
import java.util.Base64
import javax.crypto.Cipher
import javax.crypto.SecretKey
import javax.crypto.spec.SecretKeySpec

fun main() {
    val encodedKey = "MTIzNDU2Nzg5MTIzNDU2Nw=="
    val decodedKey: ByteArray = Base64.getDecoder().decode(encodedKey)

    val originalKey: SecretKey = SecretKeySpec(decodedKey, 0, decodedKey.size, "AES")
    println("originalKey: ${String(decodedKey)}")

    val cipher = Cipher.getInstance("AES")

    val clearText = "hola"
    val clearTextBytes = clearText.toByteArray(StandardCharsets.UTF_8)
    println("Texto en claro: $clearText")

    cipher.init(Cipher.ENCRYPT_MODE, originalKey)
    val cipherBytes = cipher.doFinal(clearTextBytes)
    val cipherText = String(cipherBytes, StandardCharsets.UTF_8)
    println("Texto cifrado: $cipherText")

    cipher.init(Cipher.DECRYPT_MODE, originalKey)
    val decryptedBytes = cipher.doFinal(cipherBytes)
    val decryptedText = String(decryptedBytes, StandardCharsets.UTF_8)
    println("Texto descifrado: $decryptedText")
}

import java.nio.charset.StandardCharsets

import java.util.Base64

import javax.crypto.Cipher

import javax.crypto.SecretKey

import javax.crypto.spec.SecretKeySpec

fun main() {

val encodedKey = "MTIzNDU2Nzg5MTIzNDU2Nw=="

val decodedKey: ByteArray = Base64.getDecoder().decode(encodedKey)

val originalKey: SecretKey = SecretKeySpec(decodedKey, 0, decodedKey.size, "AES")

println("originalKey: ${String(decodedKey)}")

val cipher = Cipher.getInstance("AES")

val clearText = "hola"

val clearTextBytes = clearText.toByteArray(StandardCharsets.UTF_8)

println("Texto en claro: $clearText")

cipher.init(Cipher.ENCRYPT_MODE, originalKey)

val cipherBytes = cipher.doFinal(clearTextBytes)

val cipherText = String(cipherBytes, StandardCharsets.UTF_8)

println("Texto cifrado: $cipherText")

cipher.init(Cipher.DECRYPT_MODE, originalKey)

val decryptedBytes = cipher.doFinal(cipherBytes)

val decryptedText = String(decryptedBytes, StandardCharsets.UTF_8)

println("Texto descifrado: $decryptedText")

}

Cifrado simétrico AES (Advanced Encryption Standard) en Kotlin (añadiendo una clave en Base64) (Kotlin, Criptografía)

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