implement optimizations

.gitea/workflows/publish.yaml

@@ -1,54 +1,9 @@
 on:
   push:
-    branches: [ develop, main ]
-  pull_request:
     branches: [ main ]
 
 jobs:
-  test:
-    runs-on: linux
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Setup Java
-        uses: actions/setup-java@v4
-        with:
-          java-version: '24'
-          distribution: 'temurin'
-
-      - name: Cache Gradle
-        uses: actions/cache@v4
-        with:
-          key: gradle-${{ hashFiles('**/libs.versions.toml') }}
-          restore-keys: gradle-
-          path: |
-            ~/.gradle/caches/
-            ~/.gradle/wrapper/
-
-      - name: Cache Konan
-        uses: actions/cache@v4
-        with:
-          key: konan-${{ hashFiles('**/libs.versions.toml') }}
-          restore-keys: konan-
-          path: |
-            ~/.konan/
-
-      - name: Cache Node
-        uses: actions/cache@v4
-        with:
-          key: node-${{ hashFiles('**/libs.versions.toml') }}
-          restore-keys: node-
-          path: |
-            ~/.gradle/nodejs
-            ~/.gradle/yarn
-
-      - name: Test
-        run: ./gradlew allTests
-
   publish:
-    needs: test
-    if: ${{ github.ref_name == 'main' }}
     runs-on: linux
     steps:
       - name: Checkout

.gitea/workflows/test.yaml

@@ -0,0 +1,28 @@
+on:
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: linux
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Java
+        uses: actions/setup-java@v4
+        with:
+          java-version: '24'
+          distribution: 'temurin'
+
+      - name: Cache Gradle
+        uses: actions/cache@v4
+        with:
+          key: gradle-${{ hashFiles('**/libs.versions.toml') }}
+          restore-keys: gradle-
+          path: |
+            ~/.gradle/caches/
+            ~/.gradle/wrapper/
+
+      - name: Test
+        run: ./gradlew jvmTest

README.md

@@ -11,15 +11,6 @@ Supported algorithms:
 - Blake (Blake-224, Blake-256, Blake-384, Blake-512)
 - Blake2 (Blake2s, Blake2b)
 
-## Targets
-
-| Target           | Status        |
-|------------------|---------------|
-| JVM              | Supported     |
-| JavaScript       | Supported     |
-| Native (Linux)   | Supported     |
-| Native (Windows) | Not Supported |
-
 ## Installation
 
 Add the following to your `build.gradle.kts`.
@@ -30,19 +21,16 @@ repositories {
 }
 
 dependencies {
-    implementation("com.infendro:hash:1.3.2")
+    implementation("com.infendro:hash:1.5.0")
 }
 ```
 
 ## Usage
 
 ```kotlin
-import com.infendro.hash.sha2.`SHA-256`
-
 fun main() {
     // hash some value using SHA-256
-    val value = "Hello World!"
+    val value = "Hello World!".encodeToByteArray()
-        .encodeToByteArray().asUByteArray()
     val hash = `SHA-256`.hash(value)
 }
 ```

build.gradle.kts

@@ -1,8 +1,11 @@
+@file:OptIn(ExperimentalWasmDsl::class)
+
 import com.infendro.plugin.infendro
 import com.infendro.plugin.token
+import org.jetbrains.kotlin.gradle.ExperimentalWasmDsl
 
 group = "com.infendro"
-version = "1.4.0"
+version = "1.5.0"
 
 plugins {
     alias(libs.plugins.infendro)
@@ -13,9 +16,13 @@ plugins {
 kotlin {
     jvm()
     linuxX64()
-    js {
+    linuxArm64()
-        nodejs()
+    mingwX64()
-    }
+    macosX64()
+    macosArm64()
+    js { nodejs() }
+    wasmJs { nodejs() }
+    wasmWasi { nodejs() }
 
     repositories {
         infendro()
@@ -24,7 +31,7 @@ kotlin {
 
     sourceSets {
         commonMain.dependencies {
-            implementation(libs.bytearray)
+            implementation(libs.bytes)
         }
         commonTest.dependencies {
             implementation(libs.test)

gradle/libs.versions.toml

@@ -1,12 +1,12 @@
 [versions]
-infendro = "1.0.0"
+infendro = "1.1.0"
-kotlin = "2.2.21"
+kotlin = "2.3.0"
-bytearray = "1.2.4"
+bytes = "1.3.2"
 
 [plugins]
 infendro = { id = "com.infendro.plugin", version.ref = "infendro" }
 multiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref = "kotlin" }
 
 [libraries]
-bytearray = { module = "com.infendro:bytearray", version.ref = "bytearray" }
+bytes = { module = "com.infendro:bytes", version.ref = "bytes" }
 test = { module = "org.jetbrains.kotlin:kotlin-test", version.ref = "kotlin" }

src/commonMain/kotlin/com/infendro/hash/HashFunction.kt

@@ -7,7 +7,20 @@ interface HashFunction {
 
     val block: Int
 
-    fun hash(
+    fun hashInto(value: ByteArray, destination: ByteArray)
-        value: UByteArray,
+
-    ): UByteArray
+    fun hashInto(value: ByteArray, destination: UByteArray) =
+        hashInto(value, destination.asByteArray())
+
+    fun hashInto(value: UByteArray, destination: UByteArray) =
+        hashInto(value.asByteArray(), destination.asByteArray())
+
+    fun hashInto(value: UByteArray, destination: ByteArray) =
+        hashInto(value.asByteArray(), destination)
+
+    fun hash(value: ByteArray): ByteArray =
+        ByteArray(bytes).also { hashInto(value, it) }
+
+    fun hash(value: UByteArray): UByteArray =
+        UByteArray(bytes).also { hashInto(value, it) }
 }

src/commonMain/kotlin/com/infendro/hash/blake/Blake-224.kt

@@ -1,8 +1,9 @@
 package com.infendro.hash.blake
 
-import com.infendro.bytearray.toUByteArray
+import com.infendro.bytes.intarray.copyInto
-import com.infendro.bytearray.toUIntArray
+import com.infendro.bytes.ulong.copyInto
 import com.infendro.hash.HashFunction
+import com.infendro.hash.util.ceilPow2
 
 object `Blake-224` : HashFunction {
     override val bytes: Int
@@ -16,108 +17,31 @@ object `Blake-224` : HashFunction {
         0x3070dd17U, 0xf70e5939U,
         0xffc00b31U, 0x68581511U,
         0x64f98fa7U, 0xbefa4fa4U,
-    )
+    ).asIntArray()
 
-    private val c = uintArrayOf(
+    override fun hashInto(value: ByteArray, destination: ByteArray) {
-        0x243f6a88U, 0x85a308d3U,
+        val length = value.size.toULong() * 8UL
-        0x13198a2eU, 0x03707344U,
+        val input = pad(value)
-        0xa4093822U, 0x299f31d0U,
-        0x082efa98U, 0xec4e6c89U,
-        0x452821e6U, 0x38d01377U,
-        0xbe5466cfU, 0x34e90c6cU,
-        0xc0ac29b7U, 0xc97c50ddU,
-        0x3f84d5b5U, 0xb5470917U,
-    )
-
-    private val sigma = arrayOf(
-        intArrayOf(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
-        intArrayOf(14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3),
-        intArrayOf(11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4),
-        intArrayOf(7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8),
-        intArrayOf(9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13),
-        intArrayOf(2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9),
-        intArrayOf(12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11),
-        intArrayOf(13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10),
-        intArrayOf(6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5),
-        intArrayOf(10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0),
-    )
-
-    override fun hash(value: UByteArray): UByteArray {
-        val l = value.size.toULong() * 8UL
         val h = initial.copyOf()
+        val m = IntArray(16)
+        val v = IntArray(16)
         var t = 0U
 
-        val blocks = pad(value)
+        for (i in input.indices step block) {
-            .chunked(64) { it.toUByteArray() }
+            t += minOf(length - t, 512UL).toUInt()
-        for (block in blocks) {
+            `Blake-256`.compress(h, input, i, m, v, t)
-            t += minOf(l - t, 512UL).toUInt()
+        }
-            compress(h, block, t)
+        h.copyInto(destination, endIndex = 7)
     }
 
-        return h.sliceArray(0..6).toUByteArray()
+    private fun pad(value: ByteArray): ByteArray {
-    }
+        val length = value.size.toULong() * 8UL
 
-    private fun pad(
+        val size = ceilPow2(value.size + 9, block)
-        value: UByteArray,
+        val result = ByteArray(size)
-    ): UByteArray {
+        value.copyInto(result)
-        val l = value.size.toULong() * 8UL
+        result[value.size] = 0x80U.toByte()
-        return buildList {
+        length.copyInto(result, result.size - 8)
-            addAll(value)
+        return result
-            add(0x80U)
-            while (size % 64 != 56) {
-                add(0x00U)
-            }
-            addAll(l.toUByteArray())
-        }.toUByteArray()
-    }
-
-    private fun compress(
-        h: UIntArray,
-        block: UByteArray,
-        t: UInt,
-    ) {
-        val m = block.toUIntArray()
-        val v = UIntArray(16)
-        for (i in 0..<8) v[i] = h[i]
-        for (i in 0..<4) v[i + 8] = c[i]
-        for (i in 0..<2) v[i + 12] = c[i + 4] xor t
-        for (i in 0..<2) v[i + 14] = c[i + 6]
-
-        repeat(14) { r ->
-            val s = sigma[r % 10]
-
-            g(v, 0, 4, 8, 12, m[s[0]] xor c[s[1]], m[s[1]] xor c[s[0]])
-            g(v, 1, 5, 9, 13, m[s[2]] xor c[s[3]], m[s[3]] xor c[s[2]])
-            g(v, 2, 6, 10, 14, m[s[4]] xor c[s[5]], m[s[5]] xor c[s[4]])
-            g(v, 3, 7, 11, 15, m[s[6]] xor c[s[7]], m[s[7]] xor c[s[6]])
-
-            g(v, 0, 5, 10, 15, m[s[8]] xor c[s[9]], m[s[9]] xor c[s[8]])
-            g(v, 1, 6, 11, 12, m[s[10]] xor c[s[11]], m[s[11]] xor c[s[10]])
-            g(v, 2, 7, 8, 13, m[s[12]] xor c[s[13]], m[s[13]] xor c[s[12]])
-            g(v, 3, 4, 9, 14, m[s[14]] xor c[s[15]], m[s[15]] xor c[s[14]])
-        }
-
-        for (i in 0..7) {
-            h[i] = h[i] xor v[i] xor v[i + 8]
-        }
-    }
-
-    private fun g(
-        v: UIntArray,
-        a: Int,
-        b: Int,
-        c: Int,
-        d: Int,
-        x: UInt,
-        y: UInt,
-    ) {
-        v[a] += v[b] + x
-        v[d] = (v[d] xor v[a]).rotateRight(16)
-        v[c] += v[d]
-        v[b] = (v[b] xor v[c]).rotateRight(12)
-        v[a] += v[b] + y
-        v[d] = (v[d] xor v[a]).rotateRight(8)
-        v[c] += v[d]
-        v[b] = (v[b] xor v[c]).rotateRight(7)
     }
 }

src/commonMain/kotlin/com/infendro/hash/blake/Blake-256.kt

@@ -1,8 +1,10 @@
 package com.infendro.hash.blake
 
-import com.infendro.bytearray.toUByteArray
+import com.infendro.bytes.bytearray.copyInto
-import com.infendro.bytearray.toUIntArray
+import com.infendro.bytes.intarray.copyInto
+import com.infendro.bytes.ulong.copyInto
 import com.infendro.hash.HashFunction
+import com.infendro.hash.util.ceilPow2
 
 object `Blake-256` : HashFunction {
     override val bytes: Int
@@ -16,7 +18,7 @@ object `Blake-256` : HashFunction {
         0x3c6ef372U, 0xa54ff53aU,
         0x510e527fU, 0x9b05688cU,
         0x1f83d9abU, 0x5be0cd19U,
-    )
+    ).asIntArray()
 
     private val c = uintArrayOf(
         0x243f6a88U, 0x85a308d3U,
@@ -27,7 +29,7 @@ object `Blake-256` : HashFunction {
         0xbe5466cfU, 0x34e90c6cU,
         0xc0ac29b7U, 0xc97c50ddU,
         0x3f84d5b5U, 0xb5470917U,
-    )
+    ).asIntArray()
 
     private val sigma = arrayOf(
         intArrayOf(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
@@ -42,46 +44,38 @@ object `Blake-256` : HashFunction {
         intArrayOf(10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0),
     )
 
-    override fun hash(value: UByteArray): UByteArray {
+    override fun hashInto(value: ByteArray, destination: ByteArray) {
-        val l = value.size.toULong() * 8UL
+        val length = value.size.toULong() * 8UL
+        val input = pad(value)
         val h = initial.copyOf()
+        val m = IntArray(16)
+        val v = IntArray(16)
         var t = 0U
 
-        val blocks = pad(value)
+        for (i in input.indices step block) {
-            .chunked(64) { it.toUByteArray() }
+            t += minOf(length - t, 512UL).toUInt()
-        for (block in blocks) {
+            compress(h, input, i, m, v, t)
-            t += minOf(l - t, 512UL).toUInt()
+        }
-            compress(h, block, t)
+        h.copyInto(destination)
     }
 
-        return h.toUByteArray()
+    private fun pad(value: ByteArray): ByteArray {
+        val length = value.size.toULong() * 8UL
+
+        val size = ceilPow2(value.size + 10, block)
+        val result = ByteArray(size)
+        value.copyInto(result)
+        result[value.size] = 0x80U.toByte()
+        result[result.size - 9] = 0x01
+        length.copyInto(result, result.size - 8)
+        return result
     }
 
-    private fun pad(
+    internal fun compress(h: IntArray, value: ByteArray, offset: Int, m: IntArray, v: IntArray, t: UInt) {
-        value: UByteArray,
+        value.copyInto(m, startIndex = offset, endIndex = offset + block)
-    ): UByteArray {
-        val l = value.size.toULong() * 8UL
-        return buildList {
-            addAll(value)
-            add(0x80U)
-            while (size % 64 != 55) {
-                add(0x00U)
-            }
-            add(0x01U)
-            addAll(l.toUByteArray())
-        }.toUByteArray()
-    }
-
-    private fun compress(
-        h: UIntArray,
-        block: UByteArray,
-        t: UInt,
-    ) {
-        val m = block.toUIntArray()
-        val v = UIntArray(16)
         for (i in 0..<8) v[i] = h[i]
         for (i in 0..<4) v[i + 8] = c[i]
-        for (i in 0..<2) v[i + 12] = c[i + 4] xor t
+        for (i in 0..<2) v[i + 12] = c[i + 4] xor t.toInt()
         for (i in 0..<2) v[i + 14] = c[i + 6]
 
         repeat(14) { r ->
@@ -98,20 +92,12 @@ object `Blake-256` : HashFunction {
             g(v, 3, 4, 9, 14, m[s[14]] xor c[s[15]], m[s[15]] xor c[s[14]])
         }
 
-        for (i in 0..7) {
+        for (i in 0..<8) {
             h[i] = h[i] xor v[i] xor v[i + 8]
         }
     }
 
-    private fun g(
+    private fun g(v: IntArray, a: Int, b: Int, c: Int, d: Int, x: Int, y: Int) {
-        v: UIntArray,
-        a: Int,
-        b: Int,
-        c: Int,
-        d: Int,
-        x: UInt,
-        y: UInt,
-    ) {
         v[a] += v[b] + x
         v[d] = (v[d] xor v[a]).rotateRight(16)
         v[c] += v[d]

src/commonMain/kotlin/com/infendro/hash/blake/Blake-384.kt

@@ -1,8 +1,9 @@
 package com.infendro.hash.blake
 
-import com.infendro.bytearray.toUByteArray
+import com.infendro.bytes.longarray.copyInto
-import com.infendro.bytearray.toULongArray
+import com.infendro.bytes.ulong.copyInto
 import com.infendro.hash.HashFunction
+import com.infendro.hash.util.ceilPow2
 
 object `Blake-384` : HashFunction {
     override val bytes: Int
@@ -16,108 +17,31 @@ object `Blake-384` : HashFunction {
         0x9159015a3070dd17U, 0x152fecd8f70e5939U,
         0x67332667ffc00b31U, 0x8eb44a8768581511U,
         0xdb0c2e0d64f98fa7U, 0x47b5481dbefa4fa4U,
-    )
+    ).asLongArray()
 
-    private val c = ulongArrayOf(
+    override fun hashInto(value: ByteArray, destination: ByteArray) {
-        0x243f6a8885a308d3UL, 0x13198a2e03707344UL,
+        val length = value.size.toULong() * 8UL
-        0xa4093822299f31d0UL, 0x082efa98ec4e6c89UL,
+        val input = pad(value)
-        0x452821e638d01377UL, 0xbe5466cf34e90c6cUL,
-        0xc0ac29b7c97c50ddUL, 0x3f84d5b5b5470917UL,
-        0x9216d5d98979fb1bUL, 0xd1310ba698dfb5acUL,
-        0x2ffd72dbd01adfb7UL, 0xb8e1afed6a267e96UL,
-        0xba7c9045f12c7f99UL, 0x24a19947b3916cf7UL,
-        0x0801f2e2858efc16UL, 0x636920d871574e69UL,
-    )
-
-    private val sigma = arrayOf(
-        intArrayOf(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
-        intArrayOf(14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3),
-        intArrayOf(11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4),
-        intArrayOf(7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8),
-        intArrayOf(9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13),
-        intArrayOf(2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9),
-        intArrayOf(12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11),
-        intArrayOf(13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10),
-        intArrayOf(6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5),
-        intArrayOf(10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0),
-    )
-
-    override fun hash(value: UByteArray): UByteArray {
-        val l = value.size.toULong() * 8UL
         val h = initial.copyOf()
+        val m = LongArray(16)
+        val v = LongArray(16)
         var t = 0UL
 
-        val blocks = pad(value)
+        for (i in input.indices step block) {
-            .chunked(128) { it.toUByteArray() }
+            t += minOf(length - t, 1024UL)
-        for (block in blocks) {
+            `Blake-512`.compress(h, input, i, m, v, t)
-            t += minOf(l - t, 1024UL)
+        }
-            compress(h, block, t)
+        h.copyInto(destination, endIndex = 6)
     }
 
-        return h.sliceArray(0..5).toUByteArray()
+    private fun pad(value: ByteArray): ByteArray {
-    }
+        val length = value.size.toULong() * 8UL
 
-    private fun pad(
+        val size = ceilPow2(value.size + 17, block)
-        value: UByteArray,
+        val result = ByteArray(size)
-    ): UByteArray {
+        value.copyInto(result)
-        val l = value.size.toULong() * 8UL
+        result[value.size] = 0x80U.toByte()
-        return buildList {
+        length.copyInto(result, result.size - 8)
-            addAll(value)
+        return result
-            add(0x80U)
-            while (size % 128 != 120) {
-                add(0x00U)
-            }
-            addAll(l.toUByteArray())
-        }.toUByteArray()
-    }
-
-    private fun compress(
-        h: ULongArray,
-        block: UByteArray,
-        t: ULong,
-    ) {
-        val m = block.toULongArray()
-        val v = ULongArray(16)
-        for (i in 0..<8) v[i] = h[i]
-        for (i in 0..<4) v[i + 8] = c[i]
-        for (i in 0..<2) v[i + 12] = c[i + 4] xor t
-        for (i in 0..<2) v[i + 14] = c[i + 6]
-
-        repeat(16) { r ->
-            val s = sigma[r % 10]
-
-            g(v, 0, 4, 8, 12, m[s[0]] xor c[s[1]], m[s[1]] xor c[s[0]])
-            g(v, 1, 5, 9, 13, m[s[2]] xor c[s[3]], m[s[3]] xor c[s[2]])
-            g(v, 2, 6, 10, 14, m[s[4]] xor c[s[5]], m[s[5]] xor c[s[4]])
-            g(v, 3, 7, 11, 15, m[s[6]] xor c[s[7]], m[s[7]] xor c[s[6]])
-
-            g(v, 0, 5, 10, 15, m[s[8]] xor c[s[9]], m[s[9]] xor c[s[8]])
-            g(v, 1, 6, 11, 12, m[s[10]] xor c[s[11]], m[s[11]] xor c[s[10]])
-            g(v, 2, 7, 8, 13, m[s[12]] xor c[s[13]], m[s[13]] xor c[s[12]])
-            g(v, 3, 4, 9, 14, m[s[14]] xor c[s[15]], m[s[15]] xor c[s[14]])
-        }
-
-        for (i in 0..7) {
-            h[i] = h[i] xor v[i] xor v[i + 8]
-        }
-    }
-
-    private fun g(
-        v: ULongArray,
-        a: Int,
-        b: Int,
-        c: Int,
-        d: Int,
-        x: ULong,
-        y: ULong,
-    ) {
-        v[a] += v[b] + x
-        v[d] = (v[d] xor v[a]).rotateRight(32)
-        v[c] += v[d]
-        v[b] = (v[b] xor v[c]).rotateRight(25)
-        v[a] += v[b] + y
-        v[d] = (v[d] xor v[a]).rotateRight(16)
-        v[c] += v[d]
-        v[b] = (v[b] xor v[c]).rotateRight(11)
     }
 }

src/commonMain/kotlin/com/infendro/hash/blake/Blake-512.kt

@@ -1,8 +1,10 @@
 package com.infendro.hash.blake
 
-import com.infendro.bytearray.toUByteArray
+import com.infendro.bytes.bytearray.copyInto
-import com.infendro.bytearray.toULongArray
+import com.infendro.bytes.longarray.copyInto
+import com.infendro.bytes.ulong.copyInto
 import com.infendro.hash.HashFunction
+import com.infendro.hash.util.ceilPow2
 
 object `Blake-512` : HashFunction {
     override val bytes: Int
@@ -16,7 +18,7 @@ object `Blake-512` : HashFunction {
         0x3c6ef372fe94f82bUL, 0xa54ff53a5f1d36f1UL,
         0x510e527fade682d1UL, 0x9b05688c2b3e6c1fUL,
         0x1f83d9abfb41bd6bUL, 0x5be0cd19137e2179UL,
-    )
+    ).asLongArray()
 
     private val c = ulongArrayOf(
         0x243f6a8885a308d3UL, 0x13198a2e03707344UL,
@@ -27,7 +29,7 @@ object `Blake-512` : HashFunction {
         0x2ffd72dbd01adfb7UL, 0xb8e1afed6a267e96UL,
         0xba7c9045f12c7f99UL, 0x24a19947b3916cf7UL,
         0x0801f2e2858efc16UL, 0x636920d871574e69UL,
-    )
+    ).asLongArray()
 
     private val sigma = arrayOf(
         intArrayOf(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
@@ -42,47 +44,38 @@ object `Blake-512` : HashFunction {
         intArrayOf(10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0),
     )
 
-    override fun hash(value: UByteArray): UByteArray {
+    override fun hashInto(value: ByteArray, destination: ByteArray) {
-        val l = value.size.toULong() * 8UL
+        val length = value.size.toULong() * 8UL
+        val input = pad(value)
         val h = initial.copyOf()
+        val m = LongArray(16)
+        val v = LongArray(16)
         var t = 0UL
 
-        val blocks = pad(value)
+        for (i in input.indices step block) {
-            .chunked(128) { it.toUByteArray() }
+            t += minOf(length - t, 1024UL)
-        for (block in blocks) {
+            compress(h, input, i, m, v, t)
-            t += minOf(l - t, 1024UL)
+        }
-            compress(h, block, t)
+        h.copyInto(destination)
     }
 
-        return h.toUByteArray()
+    private fun pad(value: ByteArray): ByteArray {
+        val length = value.size.toULong() * 8UL
+
+        val size = ceilPow2(value.size + 18, block)
+        val result = ByteArray(size)
+        value.copyInto(result)
+        result[value.size] = 0x80U.toByte()
+        result[result.size - 17] = 0x01
+        length.copyInto(result, result.size - 8)
+        return result
     }
 
-    private fun pad(
+    internal fun compress(h: LongArray, value: ByteArray, offset: Int, m: LongArray, v: LongArray, t: ULong) {
-        value: UByteArray,
+        value.copyInto(m, startIndex = offset, endIndex = offset + block)
-    ): UByteArray {
-        val l = value.size.toULong() * 8UL
-        return buildList {
-            addAll(value)
-            add(0x80U)
-            while (size % 128 != 111) {
-                add(0x00U)
-            }
-            add(0x01U)
-            repeat(8) { add(0x00U) }
-            addAll(l.toUByteArray())
-        }.toUByteArray()
-    }
-
-    private fun compress(
-        h: ULongArray,
-        block: UByteArray,
-        t: ULong,
-    ) {
-        val m = block.toULongArray()
-        val v = ULongArray(16)
         for (i in 0..<8) v[i] = h[i]
         for (i in 0..<4) v[i + 8] = c[i]
-        for (i in 0..<2) v[i + 12] = c[i + 4] xor t
+        for (i in 0..<2) v[i + 12] = c[i + 4] xor t.toLong()
         for (i in 0..<2) v[i + 14] = c[i + 6]
 
         repeat(16) { r ->
@@ -99,20 +92,12 @@ object `Blake-512` : HashFunction {
             g(v, 3, 4, 9, 14, m[s[14]] xor c[s[15]], m[s[15]] xor c[s[14]])
         }
 
-        for (i in 0..7) {
+        for (i in 0..<8) {
             h[i] = h[i] xor v[i] xor v[i + 8]
         }
     }
 
-    private fun g(
+    private fun g(v: LongArray, a: Int, b: Int, c: Int, d: Int, x: Long, y: Long) {
-        v: ULongArray,
-        a: Int,
-        b: Int,
-        c: Int,
-        d: Int,
-        x: ULong,
-        y: ULong,
-    ) {
         v[a] += v[b] + x
         v[d] = (v[d] xor v[a]).rotateRight(32)
         v[c] += v[d]

src/commonMain/kotlin/com/infendro/hash/blake2/Blake2b.kt

@@ -1,9 +1,10 @@
 package com.infendro.hash.blake2
 
-import com.infendro.bytearray.ByteOrder
+import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
-import com.infendro.bytearray.toUByteArray
+import com.infendro.bytes.bytearray.copyInto
-import com.infendro.bytearray.toULongArray
+import com.infendro.bytes.longarray.toByteArray
 import com.infendro.hash.HashFunction
+import com.infendro.hash.util.ceilPow2
 
 class Blake2b(
     override val bytes: Int,
@@ -20,7 +21,7 @@ class Blake2b(
         0x3c6ef372fe94f82bUL, 0xa54ff53a5f1d36f1UL,
         0x510e527fade682d1UL, 0x9b05688c2b3e6c1fUL,
         0x1f83d9abfb41bd6bUL, 0x5be0cd19137e2179UL,
-    )
+    ).asLongArray()
 
     private val sigma = arrayOf(
         intArrayOf(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
@@ -35,45 +36,42 @@ class Blake2b(
         intArrayOf(10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0),
     )
 
-    override fun hash(value: UByteArray): UByteArray {
+    override fun hashInto(value: ByteArray, destination: ByteArray) {
-        val l = value.size.toULong()
+        val length = value.size.toULong()
+        val input = pad(value)
         val h = initial.copyOf()
-        h[0] = h[0] xor (0x01010000UL or bytes.toULong())
+        h[0] = h[0] xor (0x01010000L or bytes.toLong())
+        val m = LongArray(16)
+        val v = LongArray(16)
         var t = 0UL
 
-        val blocks = pad(value)
+        for (i in input.indices step block) {
-            .chunked(128) { it.toUByteArray() }
+            t += minOf(length - t, 128UL)
-        for ((i, block) in blocks.withIndex()) {
+            compress(h, input, i, m, v, t, t < 1024UL)
-            t += minOf(l - t, 128UL)
+        }
-            compress(h, block, t, i == blocks.lastIndex)
+        h.toByteArray(LITTLE_ENDIAN).copyInto(destination, endIndex = bytes)
     }
 
-        return h.toUByteArray(ByteOrder.LITTLE_ENDIAN).sliceArray(0..<bytes)
+    private fun pad(value: ByteArray): ByteArray {
-    }
+        val size = maxOf(ceilPow2(value.size, block), block)
-
+        val result = ByteArray(size)
-    private fun pad(
+        value.copyInto(result)
-        value: UByteArray,
+        return result
-    ): UByteArray {
-        return buildList {
-            addAll(value)
-            if (isEmpty()) add(0x00U)
-            while (size % 128 != 0) {
-                add(0x00U)
-            }
-        }.toUByteArray()
     }
 
     private fun compress(
-        h: ULongArray,
+        h: LongArray,
-        block: UByteArray,
+        value: ByteArray,
+        offset: Int,
+        m: LongArray,
+        v: LongArray,
         t: ULong,
         last: Boolean,
     ) {
-        val m = block.toULongArray()
+        value.copyInto(m, startIndex = offset, endIndex = offset + block)
-        val v = ULongArray(16)
         for (i in 0..<8) v[i] = h[i]
         for (i in 0..<8) v[i + 8] = initial[i]
-        v[12] = v[12] xor t
+        v[12] = v[12] xor t.toLong()
         if (last) v[14] = v[14].inv()
 
         repeat(12) { r ->
@@ -90,20 +88,12 @@ class Blake2b(
             mix(v, 3, 4, 9, 14, m[s[14]], m[s[15]])
         }
 
-        for (i in 0..7) {
+        for (i in 0..<8) {
             h[i] = h[i] xor v[i] xor v[i + 8]
         }
     }
 
-    private fun mix(
+    private fun mix(v: LongArray, a: Int, b: Int, c: Int, d: Int, x: Long, y: Long) {
-        v: ULongArray,
-        a: Int,
-        b: Int,
-        c: Int,
-        d: Int,
-        x: ULong,
-        y: ULong,
-    ) {
         v[a] += v[b] + x
         v[d] = (v[d] xor v[a]).rotateRight(32)
         v[c] += v[d]

src/commonMain/kotlin/com/infendro/hash/blake2/Blake2s.kt

@@ -1,9 +1,10 @@
 package com.infendro.hash.blake2
 
-import com.infendro.bytearray.ByteOrder.LITTLE_ENDIAN
+import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
-import com.infendro.bytearray.toUByteArray
+import com.infendro.bytes.bytearray.copyInto
-import com.infendro.bytearray.toUIntArray
+import com.infendro.bytes.intarray.toByteArray
 import com.infendro.hash.HashFunction
+import com.infendro.hash.util.ceilPow2
 
 class Blake2s(
     override val bytes: Int,
@@ -20,7 +21,7 @@ class Blake2s(
         0x3c6ef372U, 0xa54ff53aU,
         0x510e527fU, 0x9b05688cU,
         0x1f83d9abU, 0x5be0cd19U,
-    )
+    ).asIntArray()
 
     private val sigma = arrayOf(
         intArrayOf(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
@@ -35,46 +36,42 @@ class Blake2s(
         intArrayOf(10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0),
     )
 
-    override fun hash(value: UByteArray): UByteArray {
+    override fun hashInto(value: ByteArray, destination: ByteArray) {
-        val l = value.size.toULong()
+        val length = value.size.toULong()
+        val input = pad(value)
         val h = initial.copyOf()
-        h[0] = h[0] xor (0x01010000U or bytes.toUInt())
+        h[0] = h[0] xor (0x01010000 or bytes)
+        val m = IntArray(16)
+        val v = IntArray(16)
         var t = 0U
 
-        val blocks = pad(value)
+        for (i in input.indices step block) {
-            .chunked(64) { it.toUByteArray() }
+            t += minOf(length - t, 64UL).toUInt()
-        for ((i, block) in blocks.withIndex()) {
+            compress(h, input, i, m, v, t, t < 1024UL)
-            t += minOf(l - t, 64UL).toUInt()
+        }
-            compress(h, block, t, i == blocks.lastIndex)
+        h.toByteArray(LITTLE_ENDIAN).copyInto(destination, endIndex = bytes)
     }
 
-        return h.toUByteArray(LITTLE_ENDIAN).sliceArray(0..<bytes)
+    private fun pad(value: ByteArray): ByteArray {
-    }
+        val size = maxOf(ceilPow2(value.size, block), block)
-
+        val result = ByteArray(size)
-    private fun pad(
+        value.copyInto(result)
-        value: UByteArray,
+        return result
-    ): UByteArray {
-        return buildList {
-            addAll(value)
-            if (isEmpty()) add(0x00U)
-            while (size % 64 != 0) {
-                add(0x00U)
-            }
-        }.toUByteArray()
     }
 
     private fun compress(
-        h: UIntArray,
+        h: IntArray,
-        block: UByteArray,
+        value: ByteArray,
+        offset: Int,
+        m: IntArray,
+        v: IntArray,
         t: UInt,
         last: Boolean,
     ) {
-        val m = block.toUIntArray()
+        value.copyInto(m, startIndex = offset, endIndex = offset + block)
-        val v = UIntArray(16)
         for (i in 0..<8) v[i] = h[i]
         for (i in 0..<8) v[i + 8] = initial[i]
-
+        v[12] = v[12] xor t.toInt()
-        v[12] = v[12] xor t
         if (last) v[14] = v[14].inv()
 
         repeat(10) { r ->
@@ -91,20 +88,12 @@ class Blake2s(
             mix(v, 3, 4, 9, 14, m[s[14]], m[s[15]])
         }
 
-        for (i in 0..7) {
+        for (i in 0..<8) {
             h[i] = h[i] xor v[i] xor v[i + 8]
         }
     }
 
-    private fun mix(
+    private fun mix(v: IntArray, a: Int, b: Int, c: Int, d: Int, x: Int, y: Int) {
-        v: UIntArray,
-        a: Int,
-        b: Int,
-        c: Int,
-        d: Int,
-        x: UInt,
-        y: UInt,
-    ) {
         v[a] += v[b] + x
         v[d] = (v[d] xor v[a]).rotateRight(16)
         v[c] += v[d]

src/commonMain/kotlin/com/infendro/hash/keccak/Keccak.kt

@@ -1,15 +1,15 @@
 package com.infendro.hash.keccak
 
-import com.infendro.bytearray.ByteOrder.LITTLE_ENDIAN
+import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
-import com.infendro.bytearray.toUByteArray
+import com.infendro.bytes.bytearray.copyInto
-import com.infendro.bytearray.toULongArray
+import com.infendro.bytes.long.copyInto
 import com.infendro.hash.HashFunction
-import kotlin.math.min
+import com.infendro.hash.util.ceil
 
 abstract class Keccak(
     override val bytes: Int,
     private val rate: Int,
-    private val domain: UByte,
+    private val domain: Byte,
 ) : HashFunction {
     override val block: Int
         get() = rate
@@ -21,7 +21,7 @@ abstract class Keccak(
         0x000000008000808bUL, 0x800000000000008bUL, 0x8000000000008089UL, 0x8000000000008003UL,
         0x8000000000008002UL, 0x8000000000000080UL, 0x000000000000800aUL, 0x800000008000000aUL,
         0x8000000080008081UL, 0x8000000000008080UL, 0x0000000080000001UL, 0x8000000080008008UL,
-    )
+    ).asLongArray()
 
     private val rotation = arrayOf(
         intArrayOf(0, 36, 3, 41, 18),
@@ -31,52 +31,57 @@ abstract class Keccak(
         intArrayOf(27, 20, 39, 8, 14),
     )
 
-    override fun hash(
+    override fun hashInto(value: ByteArray, destination: ByteArray) {
-        value: UByteArray,
+        val input = pad(value)
-    ): UByteArray {
+        val state = LongArray(25)
-        val state = ULongArray(25)
+        val w = LongArray(block / 8)
+        val b = LongArray(25)
+        val c = LongArray(5)
+        val d = LongArray(5)
 
-        val blocks = pad(value)
+        for (i in input.indices step block) {
-            .chunked(rate) { it.toUByteArray() }
+            absorb(state, input, i, w)
-        for (block in blocks) {
+            permute(state, b, c, d)
-            absorb(state, block)
+        }
+        squeeze(state, b, c, d, destination)
     }
 
-        return squeeze(state)
+    private fun pad(value: ByteArray): ByteArray {
+        val size = ceil(value.size + 2, block)
+        val result = ByteArray(size)
+        value.copyInto(result)
+        result[value.size] = domain
+        result[result.lastIndex] = 0x80U.toByte()
+        return result
     }
 
-    private fun pad(
+    private fun absorb(state: LongArray, value: ByteArray, offset: Int, w: LongArray) {
-        value: UByteArray,
+        value.copyInto(w, startIndex = offset, endIndex = offset + block, order = LITTLE_ENDIAN)
-    ): UByteArray {
+        for (i in w.indices) {
-        return buildList {
+            state[i] = state[i] xor w[i]
-            addAll(value)
-            add(domain)
-            while ((size % rate) != (rate - 1)) {
-                add(0x00U)
         }
-            add(0x80U)
-        }.toUByteArray()
     }
 
-    private fun absorb(
+    private fun squeeze(state: LongArray, b: LongArray, c: LongArray, d: LongArray, destination: ByteArray) {
-        state: ULongArray,
+        val buffer = ByteArray(8)
-        block: UByteArray,
+        var consumed = 0
-    ) {
+        var i = 0
-        val numbers = block.toULongArray(LITTLE_ENDIAN)
+        while (consumed < bytes) {
-        for ((i, number) in numbers.withIndex()) {
+            if (i == rate / 8) {
-            state[i] = state[i] xor number
+                permute(state, b, c, d)
-        }
+                i = 0
-        permute(state)
             }
 
-    private fun permute(
+            val length = minOf(bytes - consumed, 8)
-        a: ULongArray,
+            state[i].copyInto(buffer, order = LITTLE_ENDIAN)
-    ) {
+            buffer.copyInto(destination, consumed, endIndex = length)
-        val b = ULongArray(25)
-        val c = ULongArray(5)
-        val d = ULongArray(5)
 
-        repeat(24) { round ->
+            consumed += length
+            i++
+        }
+    }
+
+    private fun permute(a: LongArray, b: LongArray, c: LongArray, d: LongArray) = repeat(24) { round ->
         // θ
         for (x in 0..4) {
             c[x] = a[x] xor a[x + 5] xor a[x + 10] xor a[x + 15] xor a[x + 20]
@@ -101,23 +106,4 @@ abstract class Keccak(
         // ι
         a[0] = a[0] xor rc[round]
     }
-    }
-
-    private fun squeeze(
-        state: ULongArray,
-    ): UByteArray {
-        return buildList {
-            var i = 0
-            while (size < bytes) {
-                if (i == rate / 8) {
-                    permute(state)
-                    i = 0
-                }
-                addAll(
-                    state[i++].toUByteArray(LITTLE_ENDIAN)
-                        .sliceArray(0..<min(bytes - size, 8))
-                )
-            }
-        }.toUByteArray()
-    }
 }

src/commonMain/kotlin/com/infendro/hash/keccak/sha3/SHA3-224.kt

@@ -2,4 +2,4 @@ package com.infendro.hash.keccak.sha3
 
 import com.infendro.hash.keccak.Keccak
 
-object `SHA3-224` : Keccak(28, 144, 0x06U)
+object `SHA3-224` : Keccak(28, 144, 0x06)

src/commonMain/kotlin/com/infendro/hash/keccak/sha3/SHA3-256.kt

@@ -2,4 +2,4 @@ package com.infendro.hash.keccak.sha3
 
 import com.infendro.hash.keccak.Keccak
 
-object `SHA3-256` : Keccak(32, 136, 0x06U)
+object `SHA3-256` : Keccak(32, 136, 0x06)

src/commonMain/kotlin/com/infendro/hash/keccak/sha3/SHA3-384.kt

@@ -2,4 +2,4 @@ package com.infendro.hash.keccak.sha3
 
 import com.infendro.hash.keccak.Keccak
 
-object `SHA3-384` : Keccak(48, 104, 0x06U)
+object `SHA3-384` : Keccak(48, 104, 0x06)

src/commonMain/kotlin/com/infendro/hash/keccak/sha3/SHA3-512.kt

@@ -2,4 +2,4 @@ package com.infendro.hash.keccak.sha3
 
 import com.infendro.hash.keccak.Keccak
 
-object `SHA3-512` : Keccak(64, 72, 0x06U)
+object `SHA3-512` : Keccak(64, 72, 0x06)

src/commonMain/kotlin/com/infendro/hash/keccak/shake/SHAKE128.kt

@@ -4,4 +4,4 @@ import com.infendro.hash.keccak.Keccak
 
 class SHAKE128(
     bytes: Int,
-) : Keccak(bytes, 168, 0x1FU)
+) : Keccak(bytes, 168, 0x1F)

src/commonMain/kotlin/com/infendro/hash/keccak/shake/SHAKE256.kt

@@ -4,4 +4,4 @@ import com.infendro.hash.keccak.Keccak
 
 class SHAKE256(
     bytes: Int,
-) : Keccak(bytes, 136, 0x1FU)
+) : Keccak(bytes, 136, 0x1F)

src/commonMain/kotlin/com/infendro/hash/md/MD5.kt

@@ -1,9 +1,11 @@
 package com.infendro.hash.md
 
-import com.infendro.bytearray.ByteOrder.LITTLE_ENDIAN
+import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
-import com.infendro.bytearray.toUByteArray
+import com.infendro.bytes.bytearray.copyInto
-import com.infendro.bytearray.toUIntArray
+import com.infendro.bytes.intarray.copyInto
+import com.infendro.bytes.ulong.copyInto
 import com.infendro.hash.HashFunction
+import com.infendro.hash.util.ceilPow2
 
 object MD5 : HashFunction {
     override val bytes: Int
@@ -15,18 +17,7 @@ object MD5 : HashFunction {
     private val initial = uintArrayOf(
         0x67452301U, 0xefcdab89U,
         0x98badcfeU, 0x10325476U,
-    )
+    ).asIntArray()
-
-    private val shifts = intArrayOf(
-        7, 12, 17, 22, 7, 12, 17, 22,
-        7, 12, 17, 22, 7, 12, 17, 22,
-        5, 9, 14, 20, 5, 9, 14, 20,
-        5, 9, 14, 20, 5, 9, 14, 20,
-        4, 11, 16, 23, 4, 11, 16, 23,
-        4, 11, 16, 23, 4, 11, 16, 23,
-        6, 10, 15, 21, 6, 10, 15, 21,
-        6, 10, 15, 21, 6, 10, 15, 21,
-    )
 
     private val c = uintArrayOf(
         0xd76aa478U, 0xe8c7b756U, 0x242070dbU, 0xc1bdceeeU,
@@ -45,54 +36,57 @@ object MD5 : HashFunction {
         0x655b59c3U, 0x8f0ccc92U, 0xffeff47dU, 0x85845dd1U,
         0x6fa87e4fU, 0xfe2ce6e0U, 0xa3014314U, 0x4e0811a1U,
         0xf7537e82U, 0xbd3af235U, 0x2ad7d2bbU, 0xeb86d391U,
+    ).asIntArray()
+
+    private val shifts = intArrayOf(
+        7, 12, 17, 22, 7, 12, 17, 22,
+        7, 12, 17, 22, 7, 12, 17, 22,
+        5, 9, 14, 20, 5, 9, 14, 20,
+        5, 9, 14, 20, 5, 9, 14, 20,
+        4, 11, 16, 23, 4, 11, 16, 23,
+        4, 11, 16, 23, 4, 11, 16, 23,
+        6, 10, 15, 21, 6, 10, 15, 21,
+        6, 10, 15, 21, 6, 10, 15, 21,
     )
 
-    override fun hash(
+    override fun hashInto(value: ByteArray, destination: ByteArray) {
-        value: UByteArray,
+        val input = pad(value)
-    ): UByteArray {
         val h = initial.copyOf()
+        val w = IntArray(16)
+        val v = IntArray(4)
 
-        val blocks = pad(value)
+        for (i in input.indices step block) {
-            .chunked(64) { it.toUByteArray() }
+            process(h, input, i, w, v)
-        for (block in blocks) {
+        }
-            process(h, block)
+        h.copyInto(destination, order = LITTLE_ENDIAN)
     }
 
-        return h.toUByteArray(LITTLE_ENDIAN)
+    private fun pad(value: ByteArray): ByteArray {
+        val length = value.size.toULong() * 8UL
+
+        val size = ceilPow2(value.size + 9, block)
+        val result = ByteArray(size)
+        value.copyInto(result)
+        result[value.size] = 0x80U.toByte()
+        length.copyInto(result, result.size - 8, order = LITTLE_ENDIAN)
+        return result
     }
 
-    private fun pad(
+    private fun process(h: IntArray, value: ByteArray, offset: Int, w: IntArray, v: IntArray) {
-        value: UByteArray,
+        value.copyInto(w, startIndex = offset, endIndex = offset + block, order = LITTLE_ENDIAN)
-    ): UByteArray {
+        h.copyInto(v)
-        val l = value.size.toULong() * 8UL
-        return buildList {
-            addAll(value)
-            add(0x80U)
-            while (size % 64 != 56) {
-                add(0x00U)
-            }
-            addAll(l.toUByteArray(LITTLE_ENDIAN))
-        }.toUByteArray()
-    }
-
-    private fun process(
-        h: UIntArray,
-        block: UByteArray,
-    ) {
-        val w = block.toUIntArray(LITTLE_ENDIAN)
-        val v = h.copyOf()
 
         repeat(64) { i ->
             var f = when (i) {
-                in 0..15 -> (v[1] and v[2]) or (v[1].inv() and v[3])
+                in 0..<16 -> (v[1] and v[2]) or (v[1].inv() and v[3])
-                in 16..31 -> (v[3] and v[1]) or (v[3].inv() and v[2])
+                in 16..<32 -> (v[3] and v[1]) or (v[3].inv() and v[2])
-                in 32..47 -> v[1] xor v[2] xor v[3]
+                in 32..<48 -> v[1] xor v[2] xor v[3]
                 else -> v[2] xor (v[1] or v[3].inv())
             }
             val g = when (i) {
-                in 0..15 -> i
+                in 0..<16 -> i
-                in 16..31 -> (5 * i + 1) % 16
+                in 16..<32 -> (5 * i + 1) % 16
-                in 32..47 -> (3 * i + 5) % 16
+                in 32..<48 -> (3 * i + 5) % 16
                 else -> (7 * i) % 16
             }
             f += v[0] + c[i] + w[g]
@@ -102,7 +96,7 @@ object MD5 : HashFunction {
             v[1] += f.rotateLeft(shifts[i])
         }
 
-        for (i in 0..3) {
+        for (i in 0..<4) {
             h[i] += v[i]
         }
     }

src/commonMain/kotlin/com/infendro/hash/sha1/SHA1.kt

@@ -1,8 +1,10 @@
 package com.infendro.hash.sha1
 
-import com.infendro.bytearray.toUByteArray
+import com.infendro.bytes.bytearray.copyInto
-import com.infendro.bytearray.toUIntArray
+import com.infendro.bytes.intarray.copyInto
+import com.infendro.bytes.ulong.copyInto
 import com.infendro.hash.HashFunction
+import com.infendro.hash.util.ceilPow2
 
 object SHA1 : HashFunction {
     override val bytes: Int
@@ -15,48 +17,42 @@ object SHA1 : HashFunction {
         0x67452301U, 0xefcdaB89U,
         0x98badcfeU, 0x10325476U,
         0xc3d2e1f0U,
-    )
+    ).asIntArray()
 
-    override fun hash(
+    private val k = uintArrayOf(
-        value: UByteArray,
+        0x5a827999U, 0x6ed9eba1U,
-    ): UByteArray {
+        0x8f1bbcdcU, 0xca62c1d6U,
+    ).asIntArray()
+
+    override fun hashInto(value: ByteArray, destination: ByteArray) {
+        val input = pad(value)
         val h = initial.copyOf()
+        val w = IntArray(80)
+        val v = IntArray(5)
 
-        val blocks = pad(value)
+        for (i in input.indices step block) {
-            .chunked(64) { it.toUByteArray() }
+            process(h, input, i, w, v)
-        for (block in blocks) {
+        }
-            process(h, block)
+        h.copyInto(destination)
     }
 
-        return h.toUByteArray()
+    private fun pad(value: ByteArray): ByteArray {
+        val length = value.size.toULong() * 8UL
+
+        val size = ceilPow2(value.size + 9, block)
+        val result = ByteArray(size)
+        value.copyInto(result)
+        result[value.size] = 0x80U.toByte()
+        length.copyInto(result, result.size - 8)
+        return result
     }
 
-    private fun pad(
+    private fun process(h: IntArray, value: ByteArray, offset: Int, w: IntArray, v: IntArray) {
-        value: UByteArray,
+        value.copyInto(w, startIndex = offset, endIndex = offset + block)
-    ): UByteArray {
+        for (i in 16..<80) {
-        val l = value.size.toULong() * 8UL
+            w[i] = (w[i - 3] xor w[i - 8] xor w[i - 14] xor w[i - 16]).rotateLeft(1)
-        return buildList {
-            addAll(value)
-            add(0x80U)
-            while (size % 64 != 56) {
-                add(0x00U)
         }
-            addAll(l.toUByteArray())
+        h.copyInto(v)
-        }.toUByteArray()
-    }
-
-    private fun process(
-        h: UIntArray,
-        block: UByteArray,
-    ) {
-        val w = buildList {
-            addAll(block.toUIntArray())
-            for (i in 16..79) {
-                val word = (get(i - 3) xor get(i - 8) xor get(i - 14) xor get(i - 16)).rotateLeft(1)
-                add(word)
-            }
-        }.toUIntArray()
-        val v = h.copyOf()
 
         repeat(80) { i ->
             val f = when (i) {
@@ -65,13 +61,7 @@ object SHA1 : HashFunction {
                 in 40..<60 -> (v[1] and v[2]) or (v[1] and v[3]) or (v[2] and v[3])
                 else -> v[1] xor v[2] xor v[3]
             }
-            val k = when (i) {
+            val temp = v[0].rotateLeft(5) + f + v[4] + k[i / 20] + w[i]
-                in 0..<20 -> 0x5a827999U
-                in 20..<40 -> 0x6ed9eba1U
-                in 40..<60 -> 0x8f1bbcdcU
-                else -> 0xca62c1d6U
-            }
-            val temp = v[0].rotateLeft(5) + f + v[4] + k + w[i]
             v[4] = v[3]
             v[3] = v[2]
             v[2] = v[1].rotateLeft(30)
@@ -79,7 +69,7 @@ object SHA1 : HashFunction {
             v[0] = temp
         }
 
-        for (i in 0..4) {
+        for (i in 0..<5) {
             h[i] += v[i]
         }
     }

src/commonMain/kotlin/com/infendro/hash/sha2/SHA-224.kt

@@ -1,7 +1,6 @@
 package com.infendro.hash.sha2
 
-import com.infendro.bytearray.toUByteArray
+import com.infendro.bytes.intarray.copyInto
-import com.infendro.bytearray.toUIntArray
 import com.infendro.hash.HashFunction
 
 object `SHA-224` : HashFunction {
@@ -16,81 +15,17 @@ object `SHA-224` : HashFunction {
         0x3070dd17U, 0xf70e5939U,
         0xffc00b31U, 0x68581511U,
         0x64f98fa7U, 0xbefa4fa4U,
-    )
+    ).asIntArray()
 
-    private val c = uintArrayOf(
+    override fun hashInto(value: ByteArray, destination: ByteArray) {
-        0x428a2f98U, 0x71374491U, 0xb5c0fbcfU, 0xe9b5dba5U, 0x3956c25bU, 0x59f111f1U, 0x923f82a4U, 0xab1c5ed5U,
+        val input = `SHA-256`.pad(value)
-        0xd807aa98U, 0x12835b01U, 0x243185beU, 0x550c7dc3U, 0x72be5d74U, 0x80deb1feU, 0x9bdc06a7U, 0xc19bf174U,
-        0xe49b69c1U, 0xefbe4786U, 0x0fc19dc6U, 0x240ca1ccU, 0x2de92c6fU, 0x4a7484aaU, 0x5cb0a9dcU, 0x76f988daU,
-        0x983e5152U, 0xa831c66dU, 0xb00327c8U, 0xbf597fc7U, 0xc6e00bf3U, 0xd5a79147U, 0x06ca6351U, 0x14292967U,
-        0x27b70a85U, 0x2e1b2138U, 0x4d2c6dfcU, 0x53380d13U, 0x650a7354U, 0x766a0abbU, 0x81c2c92eU, 0x92722c85U,
-        0xa2bfe8a1U, 0xa81a664bU, 0xc24b8b70U, 0xc76c51a3U, 0xd192e819U, 0xd6990624U, 0xf40e3585U, 0x106aa070U,
-        0x19a4c116U, 0x1e376c08U, 0x2748774cU, 0x34b0bcb5U, 0x391c0cb3U, 0x4ed8aa4aU, 0x5b9cca4fU, 0x682e6ff3U,
-        0x748f82eeU, 0x78a5636fU, 0x84c87814U, 0x8cc70208U, 0x90befffaU, 0xa4506cebU, 0xbef9a3f7U, 0xc67178f2U,
-    )
-
-    override fun hash(
-        value: UByteArray,
-    ): UByteArray {
         val h = initial.copyOf()
+        val w = IntArray(64)
+        val v = IntArray(8)
 
-        val blocks = pad(value)
+        for (i in input.indices step block) {
-            .chunked(64) { it.toUByteArray() }
+            `SHA-256`.process(h, input, i, w, v)
-        for (block in blocks) {
-            process(h, block)
-        }
-
-        return h.sliceArray(0..6).toUByteArray()
-    }
-
-    private fun pad(
-        value: UByteArray,
-    ): UByteArray {
-        val l = value.size.toULong() * 8UL
-        return buildList {
-            addAll(value)
-            add(0x80U)
-            while (size % 64 != 56) {
-                add(0x00U)
-            }
-            addAll(l.toUByteArray())
-        }.toUByteArray()
-    }
-
-    private fun process(
-        h: UIntArray,
-        block: UByteArray,
-    ) {
-        val w = buildList {
-            addAll(block.toUIntArray())
-            for (i in 16..63) {
-                val s0 = get(i - 15).rotateRight(7) xor get(i - 15).rotateRight(18) xor (get(i - 15) shr 3)
-                val s1 = get(i - 2).rotateRight(17) xor get(i - 2).rotateRight(19) xor (get(i - 2) shr 10)
-                add(get(i - 16) + s0 + get(i - 7) + s1)
-            }
-        }.toUIntArray()
-        val v = h.copyOf()
-
-        repeat(64) { i ->
-            val s0 = v[0].rotateRight(2) xor v[0].rotateRight(13) xor v[0].rotateRight(22)
-            val s1 = v[4].rotateRight(6) xor v[4].rotateRight(11) xor v[4].rotateRight(25)
-            val ch = (v[4] and v[5]) xor (v[4].inv() and v[6])
-            val temp1 = v[7] + s1 + ch + this.c[i] + w[i]
-            val maj = (v[0] and v[1]) xor (v[0] and v[2]) xor (v[1] and v[2])
-            val temp2 = s0 + maj
-
-            v[7] = v[6]
-            v[6] = v[5]
-            v[5] = v[4]
-            v[4] = v[3] + temp1
-            v[3] = v[2]
-            v[2] = v[1]
-            v[1] = v[0]
-            v[0] = temp1 + temp2
-        }
-
-        for (i in 0..7) {
-            h[i] += v[i]
         }
+        h.copyInto(destination, endIndex = 7)
     }
 }

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

@@ -1,8 +1,10 @@
 package com.infendro.hash.sha2
 
-import com.infendro.bytearray.toUByteArray
+import com.infendro.bytes.bytearray.copyInto
-import com.infendro.bytearray.toUIntArray
+import com.infendro.bytes.intarray.copyInto
+import com.infendro.bytes.ulong.copyInto
 import com.infendro.hash.HashFunction
+import com.infendro.hash.util.ceilPow2
 
 object `SHA-256` : HashFunction {
     override val bytes: Int
@@ -16,7 +18,7 @@ object `SHA-256` : HashFunction {
         0x3c6ef372U, 0xa54ff53aU,
         0x510e527fU, 0x9b05688cU,
         0x1f83d9abU, 0x5be0cd19U,
-    )
+    ).asIntArray()
 
     private val c = uintArrayOf(
         0x428a2f98U, 0x71374491U, 0xb5c0fbcfU, 0xe9b5dba5U, 0x3956c25bU, 0x59f111f1U, 0x923f82a4U, 0xab1c5ed5U,
@@ -27,49 +29,39 @@ object `SHA-256` : HashFunction {
         0xa2bfe8a1U, 0xa81a664bU, 0xc24b8b70U, 0xc76c51a3U, 0xd192e819U, 0xd6990624U, 0xf40e3585U, 0x106aa070U,
         0x19a4c116U, 0x1e376c08U, 0x2748774cU, 0x34b0bcb5U, 0x391c0cb3U, 0x4ed8aa4aU, 0x5b9cca4fU, 0x682e6ff3U,
         0x748f82eeU, 0x78a5636fU, 0x84c87814U, 0x8cc70208U, 0x90befffaU, 0xa4506cebU, 0xbef9a3f7U, 0xc67178f2U,
-    )
+    ).asIntArray()
 
-    override fun hash(
+    override fun hashInto(value: ByteArray, destination: ByteArray) {
-        value: UByteArray,
+        val input = pad(value)
-    ): UByteArray {
         val h = initial.copyOf()
+        val w = IntArray(64)
+        val v = IntArray(8)
 
-        val blocks = pad(value)
+        for (i in input.indices step block) {
-            .chunked(64) { it.toUByteArray() }
+            process(h, input, i, w, v)
-        for (block in blocks) {
+        }
-            process(h, block)
+        h.copyInto(destination)
     }
 
-        return h.toUByteArray()
+    internal fun pad(value: ByteArray): ByteArray {
+        val length = value.size.toULong() * 8UL
+
+        val size = ceilPow2(value.size + 9, block)
+        val result = ByteArray(size)
+        value.copyInto(result)
+        result[value.size] = 0x80U.toByte()
+        length.copyInto(result, result.size - 8)
+        return result
     }
 
-    private fun pad(
+    internal fun process(h: IntArray, value: ByteArray, offset: Int, w: IntArray, v: IntArray) {
-        value: UByteArray,
+        value.copyInto(w, startIndex = offset, endIndex = offset + block)
-    ): UByteArray {
+        for (i in 16..<64) {
-        val l = value.size.toULong() * 8UL
+            val s0 = w[i - 15].rotateRight(7) xor w[i - 15].rotateRight(18) xor (w[i - 15] ushr 3)
-        return buildList {
+            val s1 = w[i - 2].rotateRight(17) xor w[i - 2].rotateRight(19) xor (w[i - 2] ushr 10)
-            addAll(value)
+            w[i] = (w[i - 16] + s0 + w[i - 7] + s1)
-            add(0x80U)
-            while (size % 64 != 56) {
-                add(0x00U)
         }
-            addAll(l.toUByteArray())
+        h.copyInto(v)
-        }.toUByteArray()
-    }
-
-    private fun process(
-        h: UIntArray,
-        block: UByteArray,
-    ) {
-        val w = buildList {
-            addAll(block.toUIntArray())
-            for (i in 16..63) {
-                val s0 = get(i - 15).rotateRight(7) xor get(i - 15).rotateRight(18) xor (get(i - 15) shr 3)
-                val s1 = get(i - 2).rotateRight(17) xor get(i - 2).rotateRight(19) xor (get(i - 2) shr 10)
-                add(get(i - 16) + s0 + get(i - 7) + s1)
-            }
-        }.toUIntArray()
-        val v = h.copyOf()
 
         repeat(64) { i ->
             val s0 = v[0].rotateRight(2) xor v[0].rotateRight(13) xor v[0].rotateRight(22)
@@ -89,7 +81,7 @@ object `SHA-256` : HashFunction {
             v[0] = temp1 + temp2
         }
 
-        for (i in 0..7) {
+        for (i in 0..<8) {
             h[i] += v[i]
         }
     }

src/commonMain/kotlin/com/infendro/hash/sha2/SHA-384.kt

@@ -1,7 +1,6 @@
 package com.infendro.hash.sha2
 
-import com.infendro.bytearray.toUByteArray
+import com.infendro.bytes.longarray.copyInto
-import com.infendro.bytearray.toULongArray
 import com.infendro.hash.HashFunction
 
 object `SHA-384` : HashFunction {
@@ -16,93 +15,17 @@ object `SHA-384` : HashFunction {
         0x9159015a3070dd17UL, 0x152fecd8f70e5939UL,
         0x67332667ffc00b31UL, 0x8eb44a8768581511UL,
         0xdb0c2e0d64f98fa7UL, 0x47b5481dbefa4fa4UL,
-    )
+    ).asLongArray()
 
-    private val c = ulongArrayOf(
+    override fun hashInto(value: ByteArray, destination: ByteArray) {
-        0x428a2f98d728ae22UL, 0x7137449123ef65cdUL, 0xb5c0fbcfec4d3b2fUL, 0xe9b5dba58189dbbcUL,
+        val input = `SHA-512`.pad(value)
-        0x3956c25bf348b538UL, 0x59f111f1b605d019UL, 0x923f82a4af194f9bUL, 0xab1c5ed5da6d8118UL,
-        0xd807aa98a3030242UL, 0x12835b0145706fbeUL, 0x243185be4ee4b28cUL, 0x550c7dc3d5ffb4e2UL,
-        0x72be5d74f27b896fUL, 0x80deb1fe3b1696b1UL, 0x9bdc06a725c71235UL, 0xc19bf174cf692694UL,
-        0xe49b69c19ef14ad2UL, 0xefbe4786384f25e3UL, 0x0fc19dc68b8cd5b5UL, 0x240ca1cc77ac9c65UL,
-        0x2de92c6f592b0275UL, 0x4a7484aa6ea6e483UL, 0x5cb0a9dcbd41fbd4UL, 0x76f988da831153b5UL,
-        0x983e5152ee66dfabUL, 0xa831c66d2db43210UL, 0xb00327c898fb213fUL, 0xbf597fc7beef0ee4UL,
-        0xc6e00bf33da88fc2UL, 0xd5a79147930aa725UL, 0x06ca6351e003826fUL, 0x142929670a0e6e70UL,
-        0x27b70a8546d22ffcUL, 0x2e1b21385c26c926UL, 0x4d2c6dfc5ac42aedUL, 0x53380d139d95b3dfUL,
-        0x650a73548baf63deUL, 0x766a0abb3c77b2a8UL, 0x81c2c92e47edaee6UL, 0x92722c851482353bUL,
-        0xa2bfe8a14cf10364UL, 0xa81a664bbc423001UL, 0xc24b8b70d0f89791UL, 0xc76c51a30654be30UL,
-        0xd192e819d6ef5218UL, 0xd69906245565a910UL, 0xf40e35855771202aUL, 0x106aa07032bbd1b8UL,
-        0x19a4c116b8d2d0c8UL, 0x1e376c085141ab53UL, 0x2748774cdf8eeb99UL, 0x34b0bcb5e19b48a8UL,
-        0x391c0cb3c5c95a63UL, 0x4ed8aa4ae3418acbUL, 0x5b9cca4f7763e373UL, 0x682e6ff3d6b2b8a3UL,
-        0x748f82ee5defb2fcUL, 0x78a5636f43172f60UL, 0x84c87814a1f0ab72UL, 0x8cc702081a6439ecUL,
-        0x90befffa23631e28UL, 0xa4506cebde82bde9UL, 0xbef9a3f7b2c67915UL, 0xc67178f2e372532bUL,
-        0xca273eceea26619cUL, 0xd186b8c721c0c207UL, 0xeada7dd6cde0eb1eUL, 0xf57d4f7fee6ed178UL,
-        0x06f067aa72176fbaUL, 0x0a637dc5a2c898a6UL, 0x113f9804bef90daeUL, 0x1b710b35131c471bUL,
-        0x28db77f523047d84UL, 0x32caab7b40c72493UL, 0x3c9ebe0a15c9bebcUL, 0x431d67c49c100d4cUL,
-        0x4cc5d4becb3e42b6UL, 0x597f299cfc657e2aUL, 0x5fcb6fab3ad6faecUL, 0x6c44198c4a475817UL,
-    )
-
-    override fun hash(
-        value: UByteArray,
-    ): UByteArray {
         val h = initial.copyOf()
+        val w = LongArray(80)
+        val v = LongArray(8)
 
-        val blocks = pad(value)
+        for (i in input.indices step block) {
-            .chunked(128) { it.toUByteArray() }
+            `SHA-512`.process(h, input, i, w, v)
-        for (block in blocks) {
-            process(h, block)
-        }
-
-        return h.sliceArray(0..5).toUByteArray()
-    }
-
-    private fun pad(
-        value: UByteArray,
-    ): UByteArray {
-        val l = value.size.toULong() * 8UL
-        return buildList {
-            addAll(value)
-            add(0x80U)
-            while (size % 128 != 120) {
-                add(0x00U)
-            }
-            addAll(l.toUByteArray())
-        }.toUByteArray()
-    }
-
-    private fun process(
-        h: ULongArray,
-        block: UByteArray,
-    ) {
-        val w = buildList {
-            addAll(block.toULongArray())
-            for (i in 16..79) {
-                val s0 = get(i - 15).rotateRight(1) xor get(i - 15).rotateRight(8) xor (get(i - 15) shr 7)
-                val s1 = get(i - 2).rotateRight(19) xor get(i - 2).rotateRight(61) xor (get(i - 2) shr 6)
-                add(get(i - 16) + s0 + get(i - 7) + s1)
-            }
-        }.toULongArray()
-        val v = h.copyOf()
-
-        repeat(80) { i ->
-            val s0 = v[0].rotateRight(28) xor v[0].rotateRight(34) xor v[0].rotateRight(39)
-            val s1 = v[4].rotateRight(14) xor v[4].rotateRight(18) xor v[4].rotateRight(41)
-            val ch = (v[4] and v[5]) xor (v[4].inv() and v[6])
-            val temp1 = v[7] + s1 + ch + this.c[i] + w[i]
-            val maj = (v[0] and v[1]) xor (v[0] and v[2]) xor (v[1] and v[2])
-            val temp2 = s0 + maj
-
-            v[7] = v[6]
-            v[6] = v[5]
-            v[5] = v[4]
-            v[4] = v[3] + temp1
-            v[3] = v[2]
-            v[2] = v[1]
-            v[1] = v[0]
-            v[0] = temp1 + temp2
-        }
-
-        for (i in 0..7) {
-            h[i] += v[i]
         }
+        h.copyInto(destination, endIndex = 6)
     }
 }

src/commonMain/kotlin/com/infendro/hash/sha2/SHA-512.kt

@@ -1,8 +1,10 @@
 package com.infendro.hash.sha2
 
-import com.infendro.bytearray.toUByteArray
+import com.infendro.bytes.bytearray.copyInto
-import com.infendro.bytearray.toULongArray
+import com.infendro.bytes.longarray.copyInto
+import com.infendro.bytes.ulong.copyInto
 import com.infendro.hash.HashFunction
+import com.infendro.hash.util.ceilPow2
 
 object `SHA-512` : HashFunction {
     override val bytes: Int
@@ -16,7 +18,7 @@ object `SHA-512` : HashFunction {
         0x3c6ef372fe94f82bUL, 0xa54ff53a5f1d36f1UL,
         0x510e527fade682d1UL, 0x9b05688c2b3e6c1fUL,
         0x1f83d9abfb41bd6bUL, 0x5be0cd19137e2179UL,
-    )
+    ).asLongArray()
 
     private val c = ulongArrayOf(
         0x428a2f98d728ae22UL, 0x7137449123ef65cdUL, 0xb5c0fbcfec4d3b2fUL, 0xe9b5dba58189dbbcUL,
@@ -39,55 +41,45 @@ object `SHA-512` : HashFunction {
         0x06f067aa72176fbaUL, 0x0a637dc5a2c898a6UL, 0x113f9804bef90daeUL, 0x1b710b35131c471bUL,
         0x28db77f523047d84UL, 0x32caab7b40c72493UL, 0x3c9ebe0a15c9bebcUL, 0x431d67c49c100d4cUL,
         0x4cc5d4becb3e42b6UL, 0x597f299cfc657e2aUL, 0x5fcb6fab3ad6faecUL, 0x6c44198c4a475817UL,
-    )
+    ).asLongArray()
 
-    override fun hash(
+    override fun hashInto(value: ByteArray, destination: ByteArray) {
-        value: UByteArray,
+        val input = pad(value)
-    ): UByteArray {
         val h = initial.copyOf()
+        val w = LongArray(80)
+        val v = LongArray(8)
 
-        val blocks = pad(value)
+        for (i in input.indices step block) {
-            .chunked(128) { it.toUByteArray() }
+            process(h, input, i, w, v)
-        for (block in blocks) {
+        }
-            process(h, block)
+        h.copyInto(destination)
     }
 
-        return h.toUByteArray()
+    internal fun pad(value: ByteArray): ByteArray {
+        val length = value.size.toULong() * 8UL
+
+        val size = ceilPow2(value.size + 17, block)
+        val result = ByteArray(size)
+        value.copyInto(result)
+        result[value.size] = 0x80U.toByte()
+        length.copyInto(result, result.size - 8)
+        return result
     }
 
-    private fun pad(
+    internal fun process(h: LongArray, value: ByteArray, offset: Int, w: LongArray, v: LongArray) {
-        value: UByteArray,
+        value.copyInto(w, startIndex = offset, endIndex = offset + block)
-    ): UByteArray {
+        for (i in 16..<80) {
-        val l = value.size.toULong() * 8UL
+            val s0 = w[i - 15].rotateRight(1) xor w[i - 15].rotateRight(8) xor (w[i - 15] ushr 7)
-        return buildList {
+            val s1 = w[i - 2].rotateRight(19) xor w[i - 2].rotateRight(61) xor (w[i - 2] ushr 6)
-            addAll(value)
+            w[i] = (w[i - 16] + s0 + w[i - 7] + s1)
-            add(0x80U)
-            while (size % 128 != 120) {
-                add(0x00U)
         }
-            addAll(l.toUByteArray())
+        h.copyInto(v)
-        }.toUByteArray()
-    }
-
-    private fun process(
-        h: ULongArray,
-        block: UByteArray,
-    ) {
-        val w = buildList {
-            addAll(block.toULongArray())
-            for (i in 16..79) {
-                val s0 = get(i - 15).rotateRight(1) xor get(i - 15).rotateRight(8) xor (get(i - 15) shr 7)
-                val s1 = get(i - 2).rotateRight(19) xor get(i - 2).rotateRight(61) xor (get(i - 2) shr 6)
-                add(get(i - 16) + s0 + get(i - 7) + s1)
-            }
-        }.toULongArray()
-        val v = h.copyOf()
 
         repeat(80) { i ->
             val s0 = v[0].rotateRight(28) xor v[0].rotateRight(34) xor v[0].rotateRight(39)
             val s1 = v[4].rotateRight(14) xor v[4].rotateRight(18) xor v[4].rotateRight(41)
             val ch = (v[4] and v[5]) xor (v[4].inv() and v[6])
-            val temp1 = v[7] + s1 + ch + this.c[i] + w[i]
+            val temp1 = v[7] + s1 + ch + c[i] + w[i]
             val maj = (v[0] and v[1]) xor (v[0] and v[2]) xor (v[1] and v[2])
             val temp2 = s0 + maj
 
@@ -101,7 +93,7 @@ object `SHA-512` : HashFunction {
             v[0] = temp1 + temp2
         }
 
-        for (i in 0..7) {
+        for (i in 0..<8) {
             h[i] += v[i]
         }
     }

src/commonMain/kotlin/com/infendro/hash/util/Math.kt

@@ -0,0 +1,7 @@
+package com.infendro.hash.util
+
+internal fun ceil(x: Int, n: Int): Int =
+    ((x + n - 1) / n) * n
+
+internal fun ceilPow2(x: Int, n: Int): Int =
+    (x + n - 1) and (n - 1).inv()