Added generic hash

multiplatform-crypto-libsodium-bindings/src/jvmMain/kotlin/com/ionspin/kotlin/crypto/generichash/GenericHashing.kt

@@ -0,0 +1,27 @@
+package com.ionspin.kotlin.crypto.generichash
+
+import com.ionspin.kotlin.crypto.Initializer.sodium
+
+/**
+ * Created by Ugljesa Jovanovic
+ * ugljesa.jovanovic@ionspin.com
+ * on 21-Aug-2020
+ */
+actual object GenericHashing {
+    actual fun genericHash(
+        message: UByteArray,
+        requestedHashLength: Int,
+        key: UByteArray?
+    ): UByteArray {
+        val hash = UByteArray(requestedHashLength)
+        sodium.crypto_generichash(
+            hash.asByteArray(),
+            requestedHashLength,
+            message.asByteArray(),
+            message.size.toLong(),
+            key?.asByteArray(),
+            (key?.size ?: 0)
+        )
+        return hash
+    }
+}

multiplatform-crypto-libsodium-bindings/src/jvmMain/kotlin/debug/test/DebugTest.kt

@@ -121,7 +121,7 @@ actual class Crypto internal actual constructor() {
     val m = UByteArray(c.size - 17)
     var tag_p : UByte = 0U
     println("Debug crypto_secretstream_xchacha20poly1305_pull")
-    sodium.crypto_secretstream_xchacha20poly1305_pull(state, m.asByteArray(), null, tag_p.toByte(),
+    sodium.crypto_secretstream_xchacha20poly1305_pull(state, m.asByteArray(), null, byteArrayOf(),
         c.asByteArray(), c.size.toLong(), ad.asByteArray(), ad.size.toLong())
     return debug.test.DecryptedDataAndTag(m, tag_p)
   }