Short hash implementation and test, updated cbc tests as they ignored padding

multiplatform-crypto-libsodium-bindings/src/jvmMain/kotlin/com/ionspin/kotlin/crypto/shortinputhash/ShortHash.kt

@@ -0,0 +1,25 @@
+package com.ionspin.kotlin.crypto.shortinputhash
+
+import com.ionspin.kotlin.crypto.LibsodiumInitializer.sodium
+
+/**
+ * Created by Ugljesa Jovanovic
+ * ugljesa.jovanovic@ionspin.com
+ * on 21-Aug-2020
+ */
+
+
+actual object ShortHash {
+    actual fun shortHash(data: UByteArray, key: UByteArray): UByteArray {
+        val hashResult = UByteArray(crypto_shorthash_BYTES)
+        sodium.crypto_shorthash(hashResult.asByteArray(), data.asByteArray(), data.size.toLong(), key.asByteArray())
+        return hashResult
+    }
+
+    actual fun shortHashKeygen(): UByteArray {
+        val key = UByteArray(crypto_shorthash_KEYBYTES)
+        sodium.crypto_shorthash_keygen(key.asByteArray())
+        return key
+    }
+
+}