Added rekey and keygen to secretstream

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

@@ -57,6 +57,10 @@ interface JsSodiumInterface {
     fun crypto_secretstream_xchacha20poly1305_init_pull(header: Uint8Array, key: Uint8Array) : dynamic
     fun crypto_secretstream_xchacha20poly1305_pull(state: dynamic, ciphertext: Uint8Array, additionalData: Uint8Array) : dynamic
 
+    //keygen and rekey
+    fun crypto_secretstream_xchacha20poly1305_keygen() : Uint8Array
+    fun crypto_secretstream_xchacha20poly1305_rekey(state: dynamic)
+
     //util
     fun memzero(array: Uint8Array)
 

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

@@ -44,4 +44,12 @@ actual object SecretStream {
 
     }
 
+    actual fun xChaCha20Poly1305Keygen(): UByteArray {
+        return getSodium().crypto_shorthash_keygen().toUByteArray()
+    }
+
+    actual fun xChaCha20Poly1305Rekey(state: SecretStreamState) {
+        getSodium().crypto_secretstream_xchacha20poly1305_rekey(state)
+    }
+
 }