Added _steam_ jvm and js implementations

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

@@ -222,6 +222,16 @@ interface JsSodiumInterface {
     fun crypto_kx_seed_keypair(seed: Uint8Array) : dynamic
     fun crypto_kx_server_session_keys(serverPublicKey: Uint8Array, serverSecretKey: Uint8Array, clientPublicKey: Uint8Array) : dynamic
 
+    // ---- Key exchange end ----
+
+    // -- Stream ----
+    fun crypto_stream_chacha20(outLength: UInt, key: Uint8Array, nonce: Uint8Array) : Uint8Array
+    fun crypto_stream_chacha20_ietf_xor(message : Uint8Array, nonce: Uint8Array, key: Uint8Array) : Uint8Array
+    fun crypto_stream_chacha20_ietf_xor_ic(message : Uint8Array, nonce: Uint8Array, initialCounter: UInt, key: Uint8Array) : Uint8Array
+    fun crypto_stream_chacha20_keygen() : Uint8Array
+    fun crypto_stream_chacha20_xor(message : Uint8Array, nonce: Uint8Array, key: Uint8Array) : Uint8Array
+    fun crypto_stream_chacha20_xor_ic(message : Uint8Array, nonce: Uint8Array, initialCounter: UInt, key: Uint8Array) : Uint8Array
+
 
 
 

multiplatform-crypto-libsodium-bindings/src/jsMain/kotlin/com/ionspin/kotlin/crypto/stream/Stream.kt

@@ -0,0 +1,82 @@
+package com.ionspin.kotlin.crypto.stream
+
+import com.ionspin.kotlin.crypto.getSodium
+import ext.libsodium.com.ionspin.kotlin.crypto.toUByteArray
+import ext.libsodium.com.ionspin.kotlin.crypto.toUInt8Array
+
+actual object Stream {
+    actual fun chacha20(clen: Int, nonce: UByteArray, key: UByteArray): UByteArray {
+        //Note, unlike the other ones, here the positions of key and nonce are reversed.
+        val result = getSodium().crypto_stream_chacha20(clen.toUInt(), key.toUInt8Array(), nonce.toUInt8Array())
+
+        return result.toUByteArray()
+    }
+
+    actual fun chacha20IetfXor(
+        message: UByteArray,
+        nonce: UByteArray,
+        key: UByteArray
+    ): UByteArray {
+        val result = getSodium().crypto_stream_chacha20_ietf_xor(
+            message.toUInt8Array(),
+            nonce.toUInt8Array(),
+            key.toUInt8Array()
+        )
+
+        return result.toUByteArray()
+    }
+
+    actual fun chacha20IetfXorIc(
+        message: UByteArray,
+        nonce: UByteArray,
+        initialCounter: ULong,
+        key: UByteArray
+    ): UByteArray {
+
+        val result = getSodium().crypto_stream_chacha20_ietf_xor_ic(
+            message.toUInt8Array(),
+            nonce.toUInt8Array(),
+            initialCounter.toUInt(),
+            key.toUInt8Array()
+        )
+
+        return result.toUByteArray()
+    }
+
+    actual fun chacha20Keygen(): UByteArray {
+        val result = getSodium().crypto_stream_chacha20_keygen()
+
+        return result.toUByteArray()
+    }
+
+    actual fun chacha20Xor(
+        message: UByteArray,
+        nonce: UByteArray,
+        key: UByteArray
+    ): UByteArray {
+        val result = getSodium().crypto_stream_chacha20_xor(
+            message.toUInt8Array(),
+            nonce.toUInt8Array(),
+            key.toUInt8Array()
+        )
+
+        return result.toUByteArray()
+    }
+
+    actual fun chacha20XorIc(
+        message: UByteArray,
+        nonce: UByteArray,
+        initialCounter: ULong,
+        key: UByteArray
+    ): UByteArray {
+        val result = getSodium().crypto_stream_chacha20_xor_ic(
+            message.toUInt8Array(),
+            nonce.toUInt8Array(),
+            initialCounter.toUInt(),
+            key.toUInt8Array()
+        )
+
+
+        return result.toUByteArray()
+    }
+}