Working single shot xchacha20poly1305 encryption and decryption in delegated flavour

multiplatform-crypto-delegated/src/jsMain/kotlin/com/ionspin/kotlin/crypto/JsSodiumInterface.kt

@@ -40,7 +40,8 @@ interface JsSodiumInterface {
     fun crypto_hash_sha512_final(state: dynamic): Uint8Array
 
     //XChaCha20Poly1305
-    fun crypto_aead_xchacha20poly1305_ietf_encrypt(message: Uint8Array, additionalData: Uint8Array, nonce: Uint8Array, key: Uint8Array) : Uint8Array
+    fun crypto_aead_xchacha20poly1305_ietf_encrypt(message: Uint8Array, additionalData: Uint8Array, secretNonce: Uint8Array, nonce: Uint8Array, key: Uint8Array) : Uint8Array
+    fun crypto_aead_xchacha20poly1305_ietf_decrypt(secretNonce: Uint8Array, ciphertext: Uint8Array, additionalData: Uint8Array, nonce: Uint8Array, key: Uint8Array) : Uint8Array
 
 
 }

multiplatform-crypto-delegated/src/jsMain/kotlin/com/ionspin/kotlin/crypto/JsUtil.kt

@@ -8,10 +8,12 @@ import org.khronos.webgl.set
  * Created by Ugljesa Jovanovic
  * ugljesa.jovanovic@ionspin.com
  * on 25-Jun-2020
+ *
+ * TODO investigate using unsafe cast
  */
 fun UByteArray.toUInt8Array() : Uint8Array {
     val uint8Result = Uint8Array(toByteArray().toTypedArray())
-    console.log("Uint8: $uint8Result")
+//    console.log("Uint8: $uint8Result")
     return uint8Result
 }
 
@@ -21,7 +23,7 @@ fun Uint8Array.toUByteArray() : UByteArray {
     for (i in 0 until length) {
         result[i] = get(i).toUByte()
     }
-    console.log("UbyteArray: ${result.joinToString()}")
+//    console.log("UbyteArray: ${result.joinToString()}")
 
     return result
 }

multiplatform-crypto-delegated/src/jsMain/kotlin/com/ionspin/kotlin/crypto/authenticated/XChaCha20Poly1305Delegated.kt

@@ -3,6 +3,7 @@ package com.ionspin.kotlin.crypto.authenticated
 import com.ionspin.kotlin.crypto.getSodium
 import ext.libsodium.com.ionspin.kotlin.crypto.toUByteArray
 import ext.libsodium.com.ionspin.kotlin.crypto.toUInt8Array
+import org.khronos.webgl.Uint8Array
 
 /**
  * Created by Ugljesa Jovanovic
@@ -26,8 +27,9 @@ actual class XChaCha20Poly1305Delegated actual constructor(key: UByteArray, addi
             val encrypted = getSodium().crypto_aead_xchacha20poly1305_ietf_encrypt(
                 message.toUInt8Array(),
                 additionalData.toUInt8Array(),
-                key.toUInt8Array(),
-                nonce.toUInt8Array()
+                Uint8Array(0),
+                nonce.toUInt8Array(),
+                key.toUInt8Array()
             )
             return encrypted.toUByteArray()
         }
@@ -38,7 +40,14 @@ actual class XChaCha20Poly1305Delegated actual constructor(key: UByteArray, addi
             ciphertext: UByteArray,
             additionalData: UByteArray
         ): UByteArray {
-            TODO("not implemented yet")
+            val decrypted = getSodium().crypto_aead_xchacha20poly1305_ietf_decrypt(
+                Uint8Array(0),
+                ciphertext.toUInt8Array(),
+                additionalData.toUInt8Array(),
+                nonce.toUInt8Array(),
+                key.toUInt8Array()
+            )
+            return decrypted.toUByteArray()
         }
     }