refactor HashFunction

src/commonMain/kotlin/com/infendro/hash/sha2/SHA-256.kt

@@ -1,7 +1,6 @@
 package com.infendro.hash.sha2
 
-import com.infendro.bytearray.addAll
-import com.infendro.bytearray.toByteArray
+import com.infendro.bytearray.toUByteArray
 import com.infendro.bytearray.toUIntArray
 import com.infendro.hash.HashFunction
 
@@ -10,7 +9,7 @@ object `SHA-256` : HashFunction() {
     override val bytes: Int
         get() = 32
 
-    private val k = arrayOf(
+    private val k = uintArrayOf(
         0x428a2f98U, 0x71374491U, 0xb5c0fbcfU, 0xe9b5dba5U, 0x3956c25bU, 0x59f111f1U, 0x923f82a4U, 0xab1c5ed5U,
         0xd807aa98U, 0x12835b01U, 0x243185beU, 0x550c7dc3U, 0x72be5d74U, 0x80deb1feU, 0x9bdc06a7U, 0xc19bf174U,
         0xe49b69c1U, 0xefbe4786U, 0x0fc19dc6U, 0x240ca1ccU, 0x2de92c6fU, 0x4a7484aaU, 0x5cb0a9dcU, 0x76f988daU,
@@ -22,8 +21,8 @@ object `SHA-256` : HashFunction() {
     )
 
     override fun hash(
-        value: ByteArray,
-    ): ByteArray {
+        value: UByteArray,
+    ): UByteArray {
         var h0 = 0x6a09e667U
         var h1 = 0xbb67ae85U
         var h2 = 0x3c6ef372U
@@ -36,15 +35,15 @@ object `SHA-256` : HashFunction() {
 
         val paddedValue = buildList {
             addAll(value)
-            add(0x80.toByte())
+            add(0x80U)
             while (size % 64 != 56) {
-                add(0x00.toByte())
+                add(0x00U)
             }
-            addAll(ml.toByteArray())
+            addAll(ml.toUByteArray())
         }
 
         val chunks = paddedValue
-            .chunked(64)
+            .chunked(64) { it.toUByteArray() }
         for (chunk in chunks) {
             val w = buildList {
                 addAll(chunk.toUIntArray())
@@ -92,15 +91,15 @@ object `SHA-256` : HashFunction() {
             h7 += h
         }
 
-        return byteArrayOf(
-            *h0.toByteArray(),
-            *h1.toByteArray(),
-            *h2.toByteArray(),
-            *h3.toByteArray(),
-            *h4.toByteArray(),
-            *h5.toByteArray(),
-            *h6.toByteArray(),
-            *h7.toByteArray(),
+        return ubyteArrayOf(
+            *h0.toUByteArray(),
+            *h1.toUByteArray(),
+            *h2.toUByteArray(),
+            *h3.toUByteArray(),
+            *h4.toUByteArray(),
+            *h5.toUByteArray(),
+            *h6.toUByteArray(),
+            *h7.toUByteArray(),
         )
     }
 }