Merge pull request '1.7.0 Release' (#10) from develop into main

Reviewed-on: Infendro/hash-kt#10

README.md

@@ -21,7 +21,7 @@ repositories {
 }
 
 dependencies {
-    implementation("com.infendro:hash:1.6.0")
+    implementation("com.infendro:hash:1.7.0")
 }
 ```
 
@@ -31,6 +31,6 @@ dependencies {
 fun main() {
     // hash some value using SHA-256
     val value = "Hello World!".encodeToByteArray()
-    val hash = `SHA-256`.hash(value)
+    val hash = `SHA-256`().hash(value)
 }
 ```

build.gradle.kts

@@ -5,7 +5,7 @@ import com.infendro.plugin.token
 import org.jetbrains.kotlin.gradle.ExperimentalWasmDsl
 
 group = "com.infendro"
-version = "1.6.0"
+version = "1.7.0"
 
 plugins {
     alias(libs.plugins.infendro)

gradle/libs.versions.toml

@@ -1,7 +1,7 @@
 [versions]
 infendro = "1.1.0"
 kotlin = "2.3.0"
-bytes = "1.4.0"
+bytes = "1.4.1"
 
 [plugins]
 infendro = { id = "com.infendro.plugin", version.ref = "infendro" }

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

@@ -0,0 +1,47 @@
+package com.infendro.hash
+
+import com.infendro.bytes.ByteOrder
+import com.infendro.bytes.int.copyInto
+import com.infendro.bytes.long.copyInto
+
+class Buffer(
+    val size: Int,
+) {
+    val value = ByteArray(size)
+    var offset = 0
+
+    val free: Int
+        get() = size - offset
+
+    fun isEmpty(): Boolean = offset == 0
+    fun isNotEmpty(): Boolean = !isEmpty()
+    fun isFull(): Boolean = offset == size
+
+    fun reset() {
+        value.fill(0x00)
+        offset = 0
+    }
+
+    fun jumpTo(offset: Int) {
+        this.offset = offset
+    }
+
+    fun append(byte: Byte) {
+        value[offset++] = byte
+    }
+
+    fun append(bytes: ByteArray, startIndex: Int = 0, endIndex: Int = bytes.size) {
+        bytes.copyInto(value, offset, startIndex, endIndex)
+        offset += (endIndex - startIndex)
+    }
+
+    fun append(n: Int, order: ByteOrder = ByteOrder.BIG_ENDIAN) {
+        n.copyInto(value, offset, order = order)
+        offset += 4
+    }
+
+    fun append(n: Long, order: ByteOrder = ByteOrder.BIG_ENDIAN) {
+        n.copyInto(value, offset, order = order)
+        offset += 8
+    }
+}

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

@@ -1,17 +1,67 @@
 package com.infendro.hash
 
-interface HashFunction {
-    val bytes: Int
+abstract class HashFunction(
+    val bytes: Int,
+    val block: Int,
+) {
     val bits: Int
         get() = bytes * 8
 
-    val block: Int
+    protected val buffer = Buffer(block)
+    protected var length = 0L
 
-    fun hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int = 0)
+    open fun reset() {
+        buffer.reset()
+        length = 0L
+    }
 
-    fun hash(value: ByteArray): ByteArray {
+    open fun update(byte: Byte) {
+        buffer.append(byte)
+        length++
+        if (buffer.isFull()) {
+            process()
+            buffer.reset()
+        }
+    }
+
+    open fun update(bytes: ByteArray) {
+        var i = 0
+
+        var free = buffer.free
+        while (i + free < bytes.size) {
+            buffer.append(bytes, startIndex = i, endIndex = i + free)
+            length += free
+            process()
+            buffer.reset()
+            free = buffer.free
+            i += block
+        }
+
+        buffer.append(bytes, startIndex = i)
+        length += (bytes.size - i)
+        if (buffer.isFull()) {
+            process()
+            buffer.reset()
+        }
+    }
+
+    protected abstract fun process()
+
+    abstract fun digestInto(destination: ByteArray, destinationOffset: Int = 0)
+
+    fun digest(): ByteArray {
         val result = ByteArray(bytes)
-        hashInto(value, result)
+        digestInto(result)
         return result
     }
+
+    fun hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int = 0) {
+        update(value)
+        digestInto(destination, destinationOffset)
+    }
+
+    fun hash(value: ByteArray): ByteArray {
+        update(value)
+        return digest()
+    }
 }

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

@@ -1,46 +1,85 @@
 package com.infendro.hash.blake
 
+import com.infendro.bytes.bytearray.copyInto
 import com.infendro.bytes.intarray.copyInto
-import com.infendro.bytes.long.copyInto
 import com.infendro.hash.HashFunction
-import com.infendro.hash.util.align
+import com.infendro.hash.blake.`Blake-256`.Companion.c
+import com.infendro.hash.blake.`Blake-256`.Companion.sigma
 
-object `Blake-224` : HashFunction {
-    override val bytes: Int
-        get() = 28
+class `Blake-224` : HashFunction(28, 64) {
+    private val h = initial.copyOf()
 
-    override val block: Int
-        get() = 64
+    private val m = IntArray(16)
+    private val v = IntArray(16)
 
+    override fun reset() {
+        super.reset()
+        initial.copyInto(h)
+    }
+
+    override fun process() = compress(buffer.value, length * 8L)
+
+    private fun finalize() {
+        buffer.append(0x80.toByte())
+        if (buffer.free < 8) {
+            process()
+            buffer.reset()
+        }
+        buffer.jumpTo(56)
+        buffer.append(length * 8L)
+
+        process()
+    }
+
+    override fun digestInto(destination: ByteArray, destinationOffset: Int) {
+        finalize()
+        h.copyInto(destination, destinationOffset, endIndex = 7)
+        reset()
+    }
+
+    private fun compress(block: ByteArray, t: Long) {
+        block.copyInto(m)
+        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.toInt()
+        for (i in 0..<2) v[i + 14] = c[i + 6] xor (t ushr 32).toInt()
+
+        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..<8) {
+            h[i] = h[i] xor v[i] xor v[i + 8]
+        }
+    }
+
+    private fun g(v: IntArray, a: Int, b: Int, c: Int, d: Int, x: Int, y: Int) {
+        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)
+    }
+
+    companion object {
         private val initial = intArrayOf(
             -0x3efa6128, +0x367cd507,
             +0x3070dd17, -0x08f1a6c7,
             -0x003ff4cf, +0x68581511,
             +0x64f98fa7, -0x4105b05c,
         )
-
-    override fun hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int) {
-        val length = value.size * 8L
-        val input = pad(value)
-        val h = initial.copyOf()
-        var t = 0
-
-        for (i in input.indices step block) {
-            t += minOf(length - t, 512).toInt()
-            val block = input.sliceArray(i..<(i + block))
-            `Blake-256`.compress(h, block, t)
-        }
-        h.copyInto(destination, destinationOffset, endIndex = 7)
-    }
-
-    private fun pad(value: ByteArray): ByteArray {
-        val length = value.size * 8L
-
-        val size = (value.size + 9).align(block)
-        return ByteArray(size).also {
-            value.copyInto(it)
-            it[value.size] = -0x80
-            length.copyInto(it, size - 8)
-        }
     }
 }

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

@@ -1,82 +1,47 @@
 package com.infendro.hash.blake
 
-import com.infendro.bytes.bytearray.toIntArray
+import com.infendro.bytes.bytearray.copyInto
 import com.infendro.bytes.intarray.copyInto
-import com.infendro.bytes.long.copyInto
 import com.infendro.hash.HashFunction
-import com.infendro.hash.util.align
 
-object `Blake-256` : HashFunction {
-    override val bytes: Int
-        get() = 32
+class `Blake-256` : HashFunction(32, 64) {
+    private val h = initial.copyOf()
 
-    override val block: Int
-        get() = 64
+    private val m = IntArray(16)
+    private val v = IntArray(16)
 
-    private val initial = intArrayOf(
-        +0x6a09e667, -0x4498517b,
-        +0x3c6ef372, -0x5ab00ac6,
-        +0x510e527f, -0x64fa9774,
-        +0x1f83d9ab, +0x5be0cd19,
-    )
-
-    private val c = intArrayOf(
-        +0x243f6a88, -0x7a5cf72d,
-        +0x13198a2e, +0x03707344,
-        -0x5bf6c7de, +0x299f31d0,
-        +0x082efa98, -0x13b19377,
-        +0x452821e6, +0x38d01377,
-        -0x41ab9931, +0x34e90c6c,
-        -0x3f53d649, -0x3683af23,
-        +0x3f84d5b5, -0x4ab8f6e9,
-    )
-
-    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 hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int) {
-        val length = value.size * 8L
-        val input = pad(value)
-        val h = initial.copyOf()
-        var t = 0
-
-        for (i in input.indices step block) {
-            t += minOf(length - t, 512).toInt()
-            val block = input.sliceArray(i..<(i + block))
-            compress(h, block, t)
+    override fun reset() {
+        super.reset()
+        initial.copyInto(h)
     }
+
+    override fun process() = compress(buffer.value, length * 8L)
+
+    private fun finalize() {
+        buffer.append(0x80.toByte())
+        if (buffer.free < 9) {
+            process()
+            buffer.reset()
+        }
+        buffer.jumpTo(55)
+        buffer.append(0x01.toByte())
+        buffer.append(length * 8L)
+
+        process()
+    }
+
+    override fun digestInto(destination: ByteArray, destinationOffset: Int) {
+        finalize()
         h.copyInto(destination, destinationOffset)
+        reset()
     }
 
-    private fun pad(value: ByteArray): ByteArray {
-        val length = value.size * 8L
-
-        val size = (value.size + 10).align(block)
-        return ByteArray(size).also {
-            value.copyInto(it)
-            it[value.size] = -0x80
-            it[size - 9] = 0x01
-            length.copyInto(it, size - 8)
-        }
-    }
-
-    internal fun compress(h: IntArray, block: ByteArray, t: Int) {
-        val m = block.toIntArray()
-        val v = IntArray(16)
+    private fun compress(block: ByteArray, t: Long) {
+        block.copyInto(m)
         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]
+        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] xor (t ushr 32).toInt()
 
         repeat(14) { r ->
             val s = sigma[r % 10]
@@ -107,4 +72,37 @@ object `Blake-256` : HashFunction {
         v[c] += v[d]
         v[b] = (v[b] xor v[c]).rotateRight(7)
     }
+
+    companion object {
+        private val initial = intArrayOf(
+            +0x6a09e667, -0x4498517b,
+            +0x3c6ef372, -0x5ab00ac6,
+            +0x510e527f, -0x64fa9774,
+            +0x1f83d9ab, +0x5be0cd19,
+        )
+
+        internal val c = intArrayOf(
+            +0x243f6a88, -0x7a5cf72d,
+            +0x13198a2e, +0x03707344,
+            -0x5bf6c7de, +0x299f31d0,
+            +0x082efa98, -0x13b19377,
+            +0x452821e6, +0x38d01377,
+            -0x41ab9931, +0x34e90c6c,
+            -0x3f53d649, -0x3683af23,
+            +0x3f84d5b5, -0x4ab8f6e9,
+        )
+
+        internal 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),
+        )
+    }
 }

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

@@ -1,46 +1,86 @@
 package com.infendro.hash.blake
 
-import com.infendro.bytes.long.copyInto
+import com.infendro.bytes.bytearray.copyInto
 import com.infendro.bytes.longarray.copyInto
 import com.infendro.hash.HashFunction
-import com.infendro.hash.util.align
+import com.infendro.hash.blake.`Blake-512`.Companion.c
+import com.infendro.hash.blake.`Blake-512`.Companion.sigma
 
-object `Blake-384` : HashFunction {
-    override val bytes: Int
-        get() = 48
+class `Blake-384` : HashFunction(48, 128) {
+    private val h = initial.copyOf()
 
-    override val block: Int
-        get() = 128
+    private val m = LongArray(16)
+    private val v = LongArray(16)
 
+    override fun reset() {
+        super.reset()
+        initial.copyInto(h)
+    }
+
+    override fun process() = compress(buffer.value, length * 8L)
+
+    private fun finalize() {
+        buffer.append(0x80.toByte())
+        if (buffer.free < 16) {
+            process()
+            buffer.reset()
+        }
+        buffer.jumpTo(112)
+        buffer.append(0L)
+        buffer.append(length * 8L)
+
+        process()
+    }
+
+    override fun digestInto(destination: ByteArray, destinationOffset: Int) {
+        finalize()
+        h.copyInto(destination, destinationOffset, endIndex = 6)
+        reset()
+    }
+
+    private fun compress(block: ByteArray, t: Long) {
+        block.copyInto(m)
+        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..<8) {
+            h[i] = h[i] xor v[i] xor v[i + 8]
+        }
+    }
+
+    private fun g(v: LongArray, a: Int, b: Int, c: Int, d: Int, x: Long, y: Long) {
+        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)
+    }
+
+    companion object {
         private val initial = longArrayOf(
             -0x344462a23efa6128, +0x629a292a367cd507,
             -0x6ea6fea5cf8f22e9, +0x152fecd8f70e5939,
             +0x67332667ffc00b31, -0x714bb57897a7eaef,
             -0x24f3d1f29b067059, +0x47b5481dbefa4fa4,
         )
-
-    override fun hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int) {
-        val length = value.size * 8L
-        val input = pad(value)
-        val h = initial.copyOf()
-        var t = 0L
-
-        for (i in input.indices step block) {
-            t += minOf(length - t, 1024)
-            val block = input.sliceArray(i..<(i + block))
-            `Blake-512`.compress(h, block, t)
-        }
-        h.copyInto(destination, destinationOffset, endIndex = 6)
-    }
-
-    private fun pad(value: ByteArray): ByteArray {
-        val length = value.size * 8L
-
-        val size = (value.size + 17).align(block)
-        return ByteArray(size).also {
-            value.copyInto(it)
-            it[value.size] = -0x80
-            length.copyInto(it, size - 8)
-        }
     }
 }

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

@@ -1,78 +1,44 @@
 package com.infendro.hash.blake
 
-import com.infendro.bytes.bytearray.toLongArray
-import com.infendro.bytes.long.copyInto
+import com.infendro.bytes.bytearray.copyInto
 import com.infendro.bytes.longarray.copyInto
 import com.infendro.hash.HashFunction
-import com.infendro.hash.util.align
 
-object `Blake-512` : HashFunction {
-    override val bytes: Int
-        get() = 64
+class `Blake-512` : HashFunction(64, 128) {
+    private val h = initial.copyOf()
 
-    override val block: Int
-        get() = 128
+    private val m = LongArray(16)
+    private val v = LongArray(16)
 
-    private val initial = longArrayOf(
-        +0x6a09e667f3bcc908L, -0x4498517a7b3558c5L,
-        +0x3c6ef372fe94f82bL, -0x5ab00ac5a0e2c90fL,
-        +0x510e527fade682d1L, -0x64fa9773d4c193e1L,
-        +0x1f83d9abfb41bd6bL, +0x5be0cd19137e2179L,
-    )
-
-    private val c = longArrayOf(
-        +0x243f6a8885a308d3L, +0x13198a2e03707344L,
-        -0x5bf6c7ddd660ce30L, +0x082efa98ec4e6c89L,
-        +0x452821e638d01377L, -0x41ab9930cb16f394L,
-        -0x3f53d6483683af23L, +0x3f84d5b5b5470917L,
-        -0x6de92a26768604e5L, -0x2ecef45967204a54L,
-        +0x2ffd72dbd01adfb7L, -0x471e501295d9816aL,
-        -0x45836fba0ed38067L, +0x24a19947b3916cf7L,
-        +0x0801f2e2858efc16L, +0x636920d871574e69L,
-    )
-
-    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 hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int) {
-        val length = value.size * 8L
-        val input = pad(value)
-        val h = initial.copyOf()
-        var t = 0L
-
-        for (i in input.indices step block) {
-            t += minOf(length - t, 1024)
-            val block = input.sliceArray(i..<(i + block))
-            compress(h, block, t)
+    override fun reset() {
+        super.reset()
+        initial.copyInto(h)
     }
+
+    override fun process() = compress(buffer.value, length * 8L)
+
+    private fun finalize() {
+        buffer.append(0x80.toByte())
+        if (buffer.free < 17) {
+            process()
+            buffer.reset()
+        }
+        buffer.jumpTo(111)
+        buffer.append(0x01.toByte())
+        buffer.append(0L)
+        buffer.append(length * 8L)
+
+        process()
+    }
+
+    override fun digestInto(destination: ByteArray, destinationOffset: Int) {
+        finalize()
         h.copyInto(destination, destinationOffset)
+        reset()
     }
 
-    private fun pad(value: ByteArray): ByteArray {
-        val length = value.size * 8L
-
-        val size = (value.size + 18).align(block)
-        return ByteArray(size).also {
-            value.copyInto(it)
-            it[value.size] = -0x80
-            it[size - 17] = 0x01
-            length.copyInto(it, size - 8)
-        }
-    }
-
-    internal fun compress(h: LongArray, block: ByteArray, t: Long) {
-        val m = block.toLongArray()
-        val v = LongArray(16)
+    private fun compress(block: ByteArray, t: Long) {
+        block.copyInto(m)
         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
@@ -107,4 +73,37 @@ object `Blake-512` : HashFunction {
         v[c] += v[d]
         v[b] = (v[b] xor v[c]).rotateRight(11)
     }
+
+    companion object {
+        private val initial = longArrayOf(
+            +0x6a09e667f3bcc908L, -0x4498517a7b3558c5L,
+            +0x3c6ef372fe94f82bL, -0x5ab00ac5a0e2c90fL,
+            +0x510e527fade682d1L, -0x64fa9773d4c193e1L,
+            +0x1f83d9abfb41bd6bL, +0x5be0cd19137e2179L,
+        )
+
+        internal val c = longArrayOf(
+            +0x243f6a8885a308d3L, +0x13198a2e03707344L,
+            -0x5bf6c7ddd660ce30L, +0x082efa98ec4e6c89L,
+            +0x452821e638d01377L, -0x41ab9930cb16f394L,
+            -0x3f53d6483683af23L, +0x3f84d5b5b5470917L,
+            -0x6de92a26768604e5L, -0x2ecef45967204a54L,
+            +0x2ffd72dbd01adfb7L, -0x471e501295d9816aL,
+            -0x45836fba0ed38067L, +0x24a19947b3916cf7L,
+            +0x0801f2e2858efc16L, +0x636920d871574e69L,
+        )
+
+        internal 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),
+        )
+    }
 }

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

@@ -1,66 +1,72 @@
 package com.infendro.hash.blake2
 
 import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
-import com.infendro.bytes.bytearray.toLongArray
+import com.infendro.bytes.bytearray.copyInto
 import com.infendro.bytes.longarray.toByteArray
 import com.infendro.hash.HashFunction
-import com.infendro.hash.util.align
 
-class Blake2b(
-    override val bytes: Int,
-) : HashFunction {
+class Blake2b(bytes: Int) : HashFunction(bytes, 128) {
     init {
         require(bytes in 1..64)
     }
 
-    override val block: Int
-        get() = 128
-
-    private val initial = longArrayOf(
-        +0x6a09e667f3bcc908L, -0x4498517a7b3558c5L,
-        +0x3c6ef372fe94f82bL, -0x5ab00ac5a0e2c90fL,
-        +0x510e527fade682d1L, -0x64fa9773d4c193e1L,
-        +0x1f83d9abfb41bd6bL, +0x5be0cd19137e2179L,
-    )
-
-    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 hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int) {
-        val length = value.size.toLong()
-        val input = pad(value)
-        val h = initial.copyOf()
+    private val h = initial.copyOf()
+        .also { h ->
             h[0] = h[0] xor (0x01010000L or bytes.toLong())
-        var t = 0L
-
-        for (i in input.indices step block) {
-            t += minOf(length - t, 128)
-            val block = input.sliceArray(i..<(i + block))
-            compress(h, block, t, t < 1024)
         }
+
+    private val m = LongArray(16)
+    private val v = LongArray(16)
+
+    override fun reset() {
+        super.reset()
+        initial.copyInto(h)
+        h[0] = h[0] xor (0x01010000L or bytes.toLong())
+    }
+
+    override fun update(byte: Byte) {
+        if (buffer.isFull()) {
+            process()
+            buffer.reset()
+        }
+        buffer.append(byte)
+        length++
+    }
+
+    override fun update(bytes: ByteArray) {
+        if (buffer.isFull() && bytes.isNotEmpty()) {
+            process()
+            buffer.reset()
+        }
+
+        var i = 0
+
+        var free = buffer.free
+        while (i + free < bytes.size) {
+            buffer.append(bytes, startIndex = i, endIndex = i + free)
+            length += free
+            process()
+            buffer.reset()
+            free = buffer.free
+            i += block
+        }
+
+        buffer.append(bytes, startIndex = i)
+        length += (bytes.size - i)
+    }
+
+    override fun process() = compress(buffer.value, length, false)
+
+    private fun finalize() = compress(buffer.value, length, true)
+
+    override fun digestInto(destination: ByteArray, destinationOffset: Int) {
+        finalize()
         h.toByteArray(order = LITTLE_ENDIAN).copyInto(destination, destinationOffset, endIndex = bytes)
+        reset()
     }
 
-    private fun pad(value: ByteArray): ByteArray {
-        val size = maxOf(value.size.align(block), block)
-        return ByteArray(size).also {
-            value.copyInto(it)
-        }
-    }
-
-    private fun compress(h: LongArray, block: ByteArray, t: Long, last: Boolean) {
-        val m = block.toLongArray()
-        val v = LongArray(16)
+    private fun compress(block: ByteArray, t: Long, last: Boolean) {
+        block.copyInto(m)
         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
@@ -95,4 +101,26 @@ class Blake2b(
         v[c] += v[d]
         v[b] = (v[b] xor v[c]).rotateRight(63)
     }
+
+    companion object {
+        private val initial = longArrayOf(
+            +0x6a09e667f3bcc908L, -0x4498517a7b3558c5L,
+            +0x3c6ef372fe94f82bL, -0x5ab00ac5a0e2c90fL,
+            +0x510e527fade682d1L, -0x64fa9773d4c193e1L,
+            +0x1f83d9abfb41bd6bL, +0x5be0cd19137e2179L,
+        )
+
+        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),
+        )
+    }
 }

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

@@ -1,69 +1,76 @@
 package com.infendro.hash.blake2
 
 import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
-import com.infendro.bytes.bytearray.toIntArray
+import com.infendro.bytes.bytearray.copyInto
 import com.infendro.bytes.intarray.toByteArray
 import com.infendro.hash.HashFunction
-import com.infendro.hash.util.align
 
-class Blake2s(
-    override val bytes: Int,
-) : HashFunction {
+class Blake2s(bytes: Int) : HashFunction(bytes, 64) {
     init {
         require(bytes in 1..32)
     }
 
-    override val block: Int
-        get() = 64
-
-    private val initial = intArrayOf(
-        +0x6a09e667, -0x4498517b,
-        +0x3c6ef372, -0x5ab00ac6,
-        +0x510e527f, -0x64fa9774,
-        +0x1f83d9ab, +0x5be0cd19,
-    )
-
-    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 hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int) {
-        val length = value.size.toLong()
-        val input = pad(value)
-        val h = initial.copyOf()
+    private val h = initial.copyOf()
+        .also { h ->
             h[0] = h[0] xor (0x01010000 or bytes)
-        var t = 0
-
-        for (i in input.indices step block) {
-            t += minOf(length - t, 64).toInt()
-            val block = input.sliceArray(i..<(i + block))
-            compress(h, block, t, t < 1024)
         }
+
+    private val m = IntArray(16)
+    private val v = IntArray(16)
+
+    override fun reset() {
+        super.reset()
+        initial.copyInto(h)
+        h[0] = h[0] xor (0x01010000 or bytes)
+    }
+
+    override fun update(byte: Byte) {
+        if (buffer.isFull()) {
+            process()
+            buffer.reset()
+        }
+        buffer.append(byte)
+        length++
+    }
+
+    override fun update(bytes: ByteArray) {
+        if (buffer.isFull() && bytes.isNotEmpty()) {
+            process()
+            buffer.reset()
+        }
+
+        var i = 0
+
+        var free = buffer.free
+        while (i + free < bytes.size) {
+            buffer.append(bytes, startIndex = i, endIndex = i + free)
+            length += free
+            process()
+            buffer.reset()
+            free = buffer.free
+            i += block
+        }
+
+        buffer.append(bytes, startIndex = i)
+        length += (bytes.size - i)
+    }
+
+    override fun process() = compress(buffer.value, length, false)
+
+    private fun finalize() = compress(buffer.value, length, true)
+
+    override fun digestInto(destination: ByteArray, destinationOffset: Int) {
+        finalize()
         h.toByteArray(order = LITTLE_ENDIAN).copyInto(destination, destinationOffset, endIndex = bytes)
+        reset()
     }
 
-    private fun pad(value: ByteArray): ByteArray {
-        val size = maxOf(value.size.align(block), block)
-        return ByteArray(size).also {
-            value.copyInto(it)
-        }
-    }
-
-    private fun compress(h: IntArray, block: ByteArray, t: Int, last: Boolean) {
-        val m = block.toIntArray()
-        val v = IntArray(16)
+    private fun compress(block: ByteArray, t: Long, last: Boolean) {
+        block.copyInto(m)
         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.toInt()
+        v[13] = v[13] xor (t ushr 32).toInt()
         if (last) v[14] = v[14].inv()
 
         repeat(10) { r ->
@@ -95,4 +102,26 @@ class Blake2s(
         v[c] += v[d]
         v[b] = (v[b] xor v[c]).rotateRight(7)
     }
+
+    companion object {
+        private val initial = intArrayOf(
+            +0x6a09e667, -0x4498517b,
+            +0x3c6ef372, -0x5ab00ac6,
+            +0x510e527f, -0x64fa9774,
+            +0x1f83d9ab, +0x5be0cd19,
+        )
+
+        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),
+        )
+    }
 }

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

@@ -4,68 +4,60 @@ import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
 import com.infendro.bytes.bytearray.copyInto
 import com.infendro.bytes.long.copyInto
 import com.infendro.hash.HashFunction
-import com.infendro.hash.util.align
 
 open class Keccak(
-    override val bytes: Int,
+    bytes: Int,
     private val rate: Int,
     private val domain: Byte,
-) : HashFunction {
+) : HashFunction(bytes, rate) {
     init {
         require(bytes > 0)
         require(rate in 8..192 step 8)
     }
 
-    override val block: Int
-        get() = rate
+    private var state = LongArray(25)
 
-    private val rc = longArrayOf(
-        +0x0000000000000001, +0x0000000000008082, -0x7fffffffffff7f76, -0x7fffffff7fff8000,
-        +0x000000000000808b, +0x0000000080000001, -0x7fffffff7fff7f7f, -0x7fffffffffff7ff7,
-        +0x000000000000008a, +0x0000000000000088, +0x0000000080008009, +0x000000008000000a,
-        +0x000000008000808b, -0x7fffffffffffff75, -0x7fffffffffff7f77, -0x7fffffffffff7ffd,
-        -0x7fffffffffff7ffe, -0x7fffffffffffff80, +0x000000000000800a, -0x7fffffff7ffffff6,
-        -0x7fffffff7fff7f7f, -0x7fffffffffff7f80, +0x0000000080000001, -0x7fffffff7fff7ff8,
-    )
+    private val w = LongArray(block / 8)
+    private val b = LongArray(25)
+    private val c = LongArray(5)
+    private val d = LongArray(5)
 
-    private val rotation = arrayOf(
-        intArrayOf(0, 36, 3, 41, 18),
-        intArrayOf(1, 44, 10, 45, 2),
-        intArrayOf(62, 6, 43, 15, 61),
-        intArrayOf(28, 55, 25, 21, 56),
-        intArrayOf(27, 20, 39, 8, 14),
-    )
-
-    override fun hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int) {
-        val input = pad(value)
-        val state = LongArray(25)
-
-        for (i in input.indices step block) {
-            val block = input.sliceArray(i..<(i + block))
-            absorb(state, block)
-            permute(state)
-        }
-        squeeze(state, destination, destinationOffset)
+    override fun reset() {
+        super.reset()
+        state.fill(0L)
     }
 
-    private fun pad(value: ByteArray): ByteArray {
-        val size = (value.size + 2).align(block)
-        return ByteArray(size).also {
-            value.copyInto(it)
-            it[value.size] = domain
-            it[size - 1] = -0x80
-        }
+    override fun process() {
+        absorb(buffer.value)
+        permute()
     }
 
-    private fun absorb(state: LongArray, block: ByteArray) {
-        val w = LongArray(this.block / 8)
+    private fun finalize() {
+        buffer.append(domain)
+        if (buffer.free < 1) {
+            process()
+            buffer.reset()
+        }
+        buffer.jumpTo(block - 1)
+        buffer.append(0x80.toByte())
+
+        process()
+    }
+
+    override fun digestInto(destination: ByteArray, destinationOffset: Int) {
+        finalize()
+        squeeze(destination, destinationOffset)
+        reset()
+    }
+
+    private fun absorb(block: ByteArray) {
         block.copyInto(w, order = LITTLE_ENDIAN)
         for (i in w.indices) {
             state[i] = state[i] xor w[i]
         }
     }
 
-    private fun squeeze(state: LongArray, destination: ByteArray, destinationOffset: Int) {
+    private fun squeeze(destination: ByteArray, destinationOffset: Int) {
         val buffer = ByteArray(8)
         val threshold = rate / 8
 
@@ -73,7 +65,7 @@ open class Keccak(
         var i = 0
         while (consumed < bytes) {
             if (i == threshold) {
-                permute(state)
+                permute()
                 i = 0
             }
 
@@ -86,10 +78,8 @@ open class Keccak(
         }
     }
 
-    private fun permute(a: LongArray) = repeat(24) { round ->
-        val b = LongArray(25)
-        val c = LongArray(5)
-        val d = LongArray(5)
+    private fun permute() = repeat(24) { round ->
+        val a = state
 
         // θ
         for (x in 0..4) {
@@ -115,4 +105,23 @@ open class Keccak(
         // ι
         a[0] = a[0] xor rc[round]
     }
+
+    companion object {
+        private val rc = longArrayOf(
+            +0x0000000000000001, +0x0000000000008082, -0x7fffffffffff7f76, -0x7fffffff7fff8000,
+            +0x000000000000808b, +0x0000000080000001, -0x7fffffff7fff7f7f, -0x7fffffffffff7ff7,
+            +0x000000000000008a, +0x0000000000000088, +0x0000000080008009, +0x000000008000000a,
+            +0x000000008000808b, -0x7fffffffffffff75, -0x7fffffffffff7f77, -0x7fffffffffff7ffd,
+            -0x7fffffffffff7ffe, -0x7fffffffffffff80, +0x000000000000800a, -0x7fffffff7ffffff6,
+            -0x7fffffff7fff7f7f, -0x7fffffffffff7f80, +0x0000000080000001, -0x7fffffff7fff7ff8,
+        )
+
+        private val rotation = arrayOf(
+            intArrayOf(0, 36, 3, 41, 18),
+            intArrayOf(1, 44, 10, 45, 2),
+            intArrayOf(62, 6, 43, 15, 61),
+            intArrayOf(28, 55, 25, 21, 56),
+            intArrayOf(27, 20, 39, 8, 14),
+        )
+    }
 }

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, 0x06)
+class `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, 0x06)
+class `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, 0x06)
+class `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, 0x06)
+class `SHA3-512` : Keccak(64, 72, 0x06)

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

@@ -1,79 +1,44 @@
 package com.infendro.hash.md
 
 import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
-import com.infendro.bytes.bytearray.toIntArray
+import com.infendro.bytes.bytearray.copyInto
 import com.infendro.bytes.intarray.copyInto
-import com.infendro.bytes.long.copyInto
 import com.infendro.hash.HashFunction
-import com.infendro.hash.util.align
 
-object MD5 : HashFunction {
-    override val bytes: Int
-        get() = 16
+class MD5 : HashFunction(16, 64) {
+    private val h = initial.copyOf()
 
-    override val block: Int
-        get() = 64
+    private val w = IntArray(16)
+    private val v = IntArray(4)
 
-    private val initial = intArrayOf(
-        +0x67452301, -0x10325477,
-        -0x67452302, +0x10325476,
-    )
-
-    private val c = intArrayOf(
-        -0x28955b88, -0x173848aa, +0x242070db, -0x3e423112,
-        -0x0a83f051, +0x4787c62a, -0x57cfb9ed, -0x02b96aff,
-        +0x698098d8, -0x74bb0851, -0x0000a44f, -0x76a32842,
-        +0x6b901122, -0x02678e6d, -0x5986bc72, +0x49b40821,
-        -0x09e1da9e, -0x3fbf4cc0, +0x265e5a51, -0x16493856,
-        -0x29d0efa3, +0x02441453, -0x275e197f, -0x182c0438,
-        +0x21e1cde6, -0x3cc8f82a, -0x0b2af279, +0x455a14ed,
-        -0x561c16fb, -0x03105c08, +0x676f02d9, -0x72d5b376,
-        -0x0005c6be, -0x788e097f, +0x6d9d6122, -0x021ac7f4,
-        -0x5b4115bc, +0x4bdecfa9, -0x0944b4a0, -0x41404390,
-        +0x289b7ec6, -0x155ed806, -0x2b10cf7b, +0x04881d05,
-        -0x262b2fc7, -0x1924661b, +0x1fa27cf8, -0x3b53a99b,
-        -0x0bd6ddbc, +0x432aff97, -0x546bdc59, -0x036c5fc7,
-        +0x655b59c3, -0x70f3336e, -0x00100b83, -0x7a7ba22f,
-        +0x6fa87e4f, -0x01d31920, -0x5cfebcec, +0x4e0811a1,
-        -0x08ac817e, -0x42c50dcb, +0x2ad7d2bb, -0x14792c6f,
-    )
-
-    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 hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int) {
-        val input = pad(value)
-        val h = initial.copyOf()
-
-        for (i in input.indices step block) {
-            val block = input.sliceArray(i..<(i + block))
-            process(h, block)
+    override fun reset() {
+        super.reset()
+        initial.copyInto(h)
     }
+
+    override fun process() = process(buffer.value)
+
+    private fun finalize() {
+        buffer.append(0x80.toByte())
+        if (buffer.free < 8) {
+            process()
+            buffer.reset()
+        }
+        buffer.jumpTo(56)
+        buffer.append(length * 8, LITTLE_ENDIAN)
+
+        process()
+    }
+
+    override fun digestInto(destination: ByteArray, destinationOffset: Int) {
+        finalize()
         h.copyInto(destination, destinationOffset, order = LITTLE_ENDIAN)
+        reset()
     }
 
-    private fun pad(value: ByteArray): ByteArray {
-        val length = value.size * 8L
-
-        val size = (value.size + 9).align(block)
-        return ByteArray(size).also {
-            value.copyInto(it)
-            it[value.size] = -0x80
-            length.copyInto(it, size - 8, order = LITTLE_ENDIAN)
-        }
-    }
-
-    private fun process(h: IntArray, block: ByteArray) {
-        val w = block.toIntArray(order = LITTLE_ENDIAN)
-        val v = h.copyOf()
+    private fun process(block: ByteArray) {
+        block.copyInto(w, order = LITTLE_ENDIAN)
+        h.copyInto(v)
 
         repeat(64) { i ->
             var f = when (i) {
@@ -99,4 +64,49 @@ object MD5 : HashFunction {
             h[i] += v[i]
         }
     }
+
+    companion object {
+        private val initial = intArrayOf(
+            +0x67452301, -0x10325477,
+            -0x67452302, +0x10325476,
+        )
+
+        private val c = intArrayOf(
+            -0x28955b88, -0x173848aa, +0x242070db, -0x3e423112,
+            -0x0a83f051, +0x4787c62a, -0x57cfb9ed, -0x02b96aff,
+            +0x698098d8, -0x74bb0851, -0x0000a44f, -0x76a32842,
+            +0x6b901122, -0x02678e6d, -0x5986bc72, +0x49b40821,
+            -0x09e1da9e, -0x3fbf4cc0, +0x265e5a51, -0x16493856,
+            -0x29d0efa3, +0x02441453, -0x275e197f, -0x182c0438,
+            +0x21e1cde6, -0x3cc8f82a, -0x0b2af279, +0x455a14ed,
+            -0x561c16fb, -0x03105c08, +0x676f02d9, -0x72d5b376,
+            -0x0005c6be, -0x788e097f, +0x6d9d6122, -0x021ac7f4,
+            -0x5b4115bc, +0x4bdecfa9, -0x0944b4a0, -0x41404390,
+            +0x289b7ec6, -0x155ed806, -0x2b10cf7b, +0x04881d05,
+            -0x262b2fc7, -0x1924661b, +0x1fa27cf8, -0x3b53a99b,
+            -0x0bd6ddbc, +0x432aff97, -0x546bdc59, -0x036c5fc7,
+            +0x655b59c3, -0x70f3336e, -0x00100b83, -0x7a7ba22f,
+            +0x6fa87e4f, -0x01d31920, -0x5cfebcec, +0x4e0811a1,
+            -0x08ac817e, -0x42c50dcb, +0x2ad7d2bb, -0x14792c6f,
+        )
+
+        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,
+        )
+    }
 }

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

@@ -2,57 +2,45 @@ package com.infendro.hash.sha1
 
 import com.infendro.bytes.bytearray.copyInto
 import com.infendro.bytes.intarray.copyInto
-import com.infendro.bytes.long.copyInto
 import com.infendro.hash.HashFunction
-import com.infendro.hash.util.align
 
-object SHA1 : HashFunction {
-    override val bytes: Int
-        get() = 20
+class SHA1 : HashFunction(20, 64) {
+    private val h = initial.copyOf()
 
-    override val block: Int
-        get() = 64
+    private val w = IntArray(80)
+    private val v = IntArray(5)
 
-    private val initial = intArrayOf(
-        +0x67452301, -0x10325477,
-        -0x67452302, +0x10325476,
-        -0x3c2d1e10,
-    )
-
-    private val k = intArrayOf(
-        +0x5a827999, +0x6ed9eba1,
-        -0x70e44324, -0x359d3e2a,
-    )
-
-    override fun hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int) {
-        val input = pad(value)
-        val h = initial.copyOf()
-
-        for (i in input.indices step block) {
-            val block = input.sliceArray(i..<(i + block))
-            process(h, block)
+    override fun reset() {
+        super.reset()
+        initial.copyInto(h)
     }
+
+    override fun process() = process(buffer.value)
+
+    private fun finalize() {
+        buffer.append(0x80.toByte())
+        if (buffer.free < 8) {
+            process()
+            buffer.reset()
+        }
+        buffer.jumpTo(56)
+        buffer.append(length * 8)
+
+        process()
+    }
+
+    override fun digestInto(destination: ByteArray, destinationOffset: Int) {
+        finalize()
         h.copyInto(destination, destinationOffset)
+        reset()
     }
 
-    private fun pad(value: ByteArray): ByteArray {
-        val length = value.size * 8L
-
-        val size = (value.size + 9).align(block)
-        return ByteArray(size).also {
-            value.copyInto(it)
-            it[value.size] = -0x80
-            length.copyInto(it, size - 8)
-        }
-    }
-
-    private fun process(h: IntArray, block: ByteArray) {
-        val w = IntArray(80)
+    private fun process(block: ByteArray) {
         block.copyInto(w)
         for (i in 16..<80) {
             w[i] = (w[i - 3] xor w[i - 8] xor w[i - 14] xor w[i - 16]).rotateLeft(1)
         }
-        val v = h.copyOf()
+        h.copyInto(v)
 
         repeat(80) { i ->
             val f = when (i) {
@@ -73,4 +61,17 @@ object SHA1 : HashFunction {
             h[i] += v[i]
         }
     }
+
+    companion object {
+        private val initial = intArrayOf(
+            +0x67452301, -0x10325477,
+            -0x67452302, +0x10325476,
+            -0x3c2d1e10,
+        )
+
+        private val k = intArrayOf(
+            +0x5a827999, +0x6ed9eba1,
+            -0x70e44324, -0x359d3e2a,
+        )
+    }
 }

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

@@ -1,30 +1,79 @@
 package com.infendro.hash.sha2
 
+import com.infendro.bytes.bytearray.copyInto
 import com.infendro.bytes.intarray.copyInto
 import com.infendro.hash.HashFunction
+import com.infendro.hash.sha2.`SHA-256`.Companion.c
 
-object `SHA-224` : HashFunction {
-    override val bytes: Int
-        get() = 28
+class `SHA-224` : HashFunction(28, 64) {
+    private val h = initial.copyOf()
 
-    override val block: Int
-        get() = 64
+    private val w = IntArray(64)
+    private val v = IntArray(8)
 
+    override fun reset() {
+        super.reset()
+        initial.copyInto(h)
+    }
+
+    override fun process() = process(buffer.value)
+
+    private fun finalize() {
+        buffer.append(0x80.toByte())
+        if (buffer.free < 8) {
+            process(buffer.value)
+            buffer.reset()
+        }
+        buffer.jumpTo(56)
+        buffer.append(length * 8)
+
+        process(buffer.value)
+    }
+
+    override fun digestInto(destination: ByteArray, destinationOffset: Int) {
+        finalize()
+        h.copyInto(destination, destinationOffset, endIndex = 7)
+        reset()
+    }
+
+    private fun process(block: ByteArray) {
+        block.copyInto(w)
+        for (i in 16..<64) {
+            val s0 = w[i - 15].rotateRight(7) xor w[i - 15].rotateRight(18) xor (w[i - 15] ushr 3)
+            val s1 = w[i - 2].rotateRight(17) xor w[i - 2].rotateRight(19) xor (w[i - 2] ushr 10)
+            w[i] = (w[i - 16] + s0 + w[i - 7] + s1)
+        }
+        h.copyInto(v)
+
+        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 + 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..<8) {
+            h[i] += v[i]
+        }
+    }
+
+    companion object {
         private val initial = intArrayOf(
             -0x3efa6128, +0x367cd507,
             +0x3070dd17, -0x08f1a6c7,
             -0x003ff4cf, +0x68581511,
             +0x64f98fa7, -0x4105b05c,
         )
-
-    override fun hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int) {
-        val input = `SHA-256`.pad(value)
-        val h = initial.copyOf()
-
-        for (i in input.indices step block) {
-            val block = input.sliceArray(i..<(i + block))
-            `SHA-256`.process(h, block)
-        }
-        h.copyInto(destination, destinationOffset, endIndex = 7)
     }
 }

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

@@ -2,72 +2,53 @@ package com.infendro.hash.sha2
 
 import com.infendro.bytes.bytearray.copyInto
 import com.infendro.bytes.intarray.copyInto
-import com.infendro.bytes.long.copyInto
 import com.infendro.hash.HashFunction
-import com.infendro.hash.util.align
 
-object `SHA-256` : HashFunction {
-    override val bytes: Int
-        get() = 32
+class `SHA-256` : HashFunction(32, 64) {
+    private val h = initial.copyOf()
 
-    override val block: Int
-        get() = 64
+    private val w = IntArray(64)
+    private val v = IntArray(8)
 
-    private val initial = intArrayOf(
-        +0x6a09e667, -0x4498517b,
-        +0x3c6ef372, -0x5ab00ac6,
-        +0x510e527f, -0x64fa9774,
-        +0x1f83d9ab, +0x5be0cd19,
-    )
-
-    private val c = intArrayOf(
-        +0x428a2f98, +0x71374491, -0x4a3f0431, -0x164a245b, +0x3956c25b, +0x59f111f1, -0x6dc07d5c, -0x54e3a12b,
-        -0x27f85568, +0x12835b01, +0x243185be, +0x550c7dc3, +0x72be5d74, -0x7f214e02, -0x6423f959, -0x3e640e8c,
-        -0x1b64963f, -0x1041b87a, +0x0fc19dc6, +0x240ca1cc, +0x2de92c6f, +0x4a7484aa, +0x5cb0a9dc, +0x76f988da,
-        -0x67c1aeae, -0x57ce3993, -0x4ffcd838, -0x40a68039, -0x391ff40d, -0x2a586eb9, +0x06ca6351, +0x14292967,
-        +0x27b70a85, +0x2e1b2138, +0x4d2c6dfc, +0x53380d13, +0x650a7354, +0x766a0abb, -0x7e3d36d2, -0x6d8dd37b,
-        -0x5d40175f, -0x57e599b5, -0x3db47490, -0x3893ae5d, -0x2e6d17e7, -0x2966f9dc, -0x0bf1ca7b, +0x106aa070,
-        +0x19a4c116, +0x1e376c08, +0x2748774c, +0x34b0bcb5, +0x391c0cb3, +0x4ed8aa4a, +0x5b9cca4f, +0x682e6ff3,
-        +0x748f82ee, +0x78a5636f, -0x7b3787ec, -0x7338fdf8, -0x6f410006, -0x5baf9315, -0x41065c09, -0x398e870e,
-    )
-
-    override fun hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int) {
-        val input = pad(value)
-        val h = initial.copyOf()
-
-        for (i in input.indices step block) {
-            val block = input.sliceArray(i..<(i + block))
-            process(h, block)
+    override fun reset() {
+        super.reset()
+        initial.copyInto(h)
     }
+
+    override fun process() = process(buffer.value)
+
+    private fun finalize() {
+        buffer.append(0x80.toByte())
+        if (buffer.free < 8) {
+            process(buffer.value)
+            buffer.reset()
+        }
+        buffer.jumpTo(56)
+        buffer.append(length * 8)
+
+        process(buffer.value)
+    }
+
+    override fun digestInto(destination: ByteArray, destinationOffset: Int) {
+        finalize()
         h.copyInto(destination, destinationOffset)
+        reset()
     }
 
-    internal fun pad(value: ByteArray): ByteArray {
-        val length = value.size * 8L
-
-        val size = (value.size + 9).align(block)
-        return ByteArray(size).also {
-            value.copyInto(it)
-            it[value.size] = -0x80
-            length.copyInto(it, size - 8)
-        }
-    }
-
-    internal fun process(h: IntArray, block: ByteArray) {
-        val w = IntArray(64)
+    private fun process(block: ByteArray) {
         block.copyInto(w)
         for (i in 16..<64) {
             val s0 = w[i - 15].rotateRight(7) xor w[i - 15].rotateRight(18) xor (w[i - 15] ushr 3)
             val s1 = w[i - 2].rotateRight(17) xor w[i - 2].rotateRight(19) xor (w[i - 2] ushr 10)
             w[i] = (w[i - 16] + s0 + w[i - 7] + s1)
         }
-        val v = h.copyOf()
+        h.copyInto(v)
 
         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 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
 
@@ -85,4 +66,24 @@ object `SHA-256` : HashFunction {
             h[i] += v[i]
         }
     }
+
+    companion object {
+        private val initial = intArrayOf(
+            +0x6a09e667, -0x4498517b,
+            +0x3c6ef372, -0x5ab00ac6,
+            +0x510e527f, -0x64fa9774,
+            +0x1f83d9ab, +0x5be0cd19,
+        )
+
+        internal val c = intArrayOf(
+            +0x428a2f98, +0x71374491, -0x4a3f0431, -0x164a245b, +0x3956c25b, +0x59f111f1, -0x6dc07d5c, -0x54e3a12b,
+            -0x27f85568, +0x12835b01, +0x243185be, +0x550c7dc3, +0x72be5d74, -0x7f214e02, -0x6423f959, -0x3e640e8c,
+            -0x1b64963f, -0x1041b87a, +0x0fc19dc6, +0x240ca1cc, +0x2de92c6f, +0x4a7484aa, +0x5cb0a9dc, +0x76f988da,
+            -0x67c1aeae, -0x57ce3993, -0x4ffcd838, -0x40a68039, -0x391ff40d, -0x2a586eb9, +0x06ca6351, +0x14292967,
+            +0x27b70a85, +0x2e1b2138, +0x4d2c6dfc, +0x53380d13, +0x650a7354, +0x766a0abb, -0x7e3d36d2, -0x6d8dd37b,
+            -0x5d40175f, -0x57e599b5, -0x3db47490, -0x3893ae5d, -0x2e6d17e7, -0x2966f9dc, -0x0bf1ca7b, +0x106aa070,
+            +0x19a4c116, +0x1e376c08, +0x2748774c, +0x34b0bcb5, +0x391c0cb3, +0x4ed8aa4a, +0x5b9cca4f, +0x682e6ff3,
+            +0x748f82ee, +0x78a5636f, -0x7b3787ec, -0x7338fdf8, -0x6f410006, -0x5baf9315, -0x41065c09, -0x398e870e,
+        )
+    }
 }

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

@@ -1,30 +1,79 @@
 package com.infendro.hash.sha2
 
+import com.infendro.bytes.bytearray.copyInto
 import com.infendro.bytes.longarray.copyInto
 import com.infendro.hash.HashFunction
+import com.infendro.hash.sha2.`SHA-512`.Companion.c
 
-object `SHA-384` : HashFunction {
-    override val bytes: Int
-        get() = 48
+class `SHA-384` : HashFunction(48, 128) {
+    private val h = initial.copyOf()
 
-    override val block: Int
-        get() = 128
+    private val w = LongArray(80)
+    private val v = LongArray(8)
 
+    override fun reset() {
+        super.reset()
+        initial.copyInto(h)
+    }
+
+    override fun process() = process(buffer.value)
+
+    private fun finalize() {
+        buffer.append(0x80.toByte())
+        if (buffer.free < 16) {
+            process(buffer.value)
+            buffer.reset()
+        }
+        buffer.jumpTo(112)
+        buffer.append(length * 8)
+
+        process(buffer.value)
+    }
+
+    override fun digestInto(destination: ByteArray, destinationOffset: Int) {
+        finalize()
+        h.copyInto(destination, destinationOffset, endIndex = 6)
+        reset()
+    }
+
+    private fun process(block: ByteArray) {
+        block.copyInto(w)
+        for (i in 16..<80) {
+            val s0 = w[i - 15].rotateRight(1) xor w[i - 15].rotateRight(8) xor (w[i - 15] ushr 7)
+            val s1 = w[i - 2].rotateRight(19) xor w[i - 2].rotateRight(61) xor (w[i - 2] ushr 6)
+            w[i] = (w[i - 16] + s0 + w[i - 7] + s1)
+        }
+        h.copyInto(v)
+
+        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 + 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..<8) {
+            h[i] += v[i]
+        }
+    }
+
+    companion object {
         private val initial = longArrayOf(
             -0x344462a23efa6128, +0x629a292a367cd507,
             -0x6ea6fea5cf8f22e9, +0x152fecd8f70e5939,
             +0x67332667ffc00b31, -0x714bb57897a7eaef,
             -0x24f3d1f29b067059, +0x47b5481dbefa4fa4,
         )
-
-    override fun hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int) {
-        val input = `SHA-512`.pad(value)
-        val h = initial.copyOf()
-
-        for (i in input.indices step block) {
-            val block = input.sliceArray(i..<(i + block))
-            `SHA-512`.process(h, block)
-        }
-        h.copyInto(destination, destinationOffset, endIndex = 6)
     }
 }

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

@@ -1,79 +1,48 @@
 package com.infendro.hash.sha2
 
 import com.infendro.bytes.bytearray.copyInto
-import com.infendro.bytes.long.copyInto
 import com.infendro.bytes.longarray.copyInto
 import com.infendro.hash.HashFunction
-import com.infendro.hash.util.align
 
-object `SHA-512` : HashFunction {
-    override val bytes: Int
-        get() = 64
+class `SHA-512` : HashFunction(64, 128) {
+    private val h = initial.copyOf()
 
-    override val block: Int
-        get() = 128
+    private val w = LongArray(80)
+    private val v = LongArray(8)
 
-    private val initial = longArrayOf(
-        +0x6a09e667f3bcc908, -0x4498517a7b3558c5,
-        +0x3c6ef372fe94f82b, -0x5ab00ac5a0e2c90f,
-        +0x510e527fade682d1, -0x64fa9773d4c193e1,
-        +0x1f83d9abfb41bd6b, +0x5be0cd19137e2179,
-    )
-
-    private val c = longArrayOf(
-        +0x428a2f98d728ae22, +0x7137449123ef65cd, -0x4a3f043013b2c4d1, -0x164a245a7e762444,
-        +0x3956c25bf348b538, +0x59f111f1b605d019, -0x6dc07d5b50e6b065, -0x54e3a12a25927ee8,
-        -0x27f855675cfcfdbe, +0x12835b0145706fbe, +0x243185be4ee4b28c, +0x550c7dc3d5ffb4e2,
-        +0x72be5d74f27b896f, -0x7f214e01c4e9694f, -0x6423f958da38edcb, -0x3e640e8b3096d96c,
-        -0x1b64963e610eb52e, -0x1041b879c7b0da1d, +0x0fc19dc68b8cd5b5, +0x240ca1cc77ac9c65,
-        +0x2de92c6f592b0275, +0x4a7484aa6ea6e483, +0x5cb0a9dcbd41fbd4, +0x76f988da831153b5,
-        -0x67c1aead11992055, -0x57ce3992d24bcdf0, -0x4ffcd8376704dec1, -0x40a680384110f11c,
-        -0x391ff40cc257703e, -0x2a586eb86cf558db, +0x06ca6351e003826f, +0x142929670a0e6e70,
-        +0x27b70a8546d22ffc, +0x2e1b21385c26c926, +0x4d2c6dfc5ac42aed, +0x53380d139d95b3df,
-        +0x650a73548baf63de, +0x766a0abb3c77b2a8, -0x7e3d36d1b812511a, -0x6d8dd37aeb7dcac5,
-        -0x5d40175eb30efc9c, -0x57e599b443bdcfff, -0x3db4748f2f07686f, -0x3893ae5cf9ab41d0,
-        -0x2e6d17e62910ade8, -0x2966f9dbaa9a56f0, -0x0bf1ca7aa88edfd6, +0x106aa07032bbd1b8,
-        +0x19a4c116b8d2d0c8, +0x1e376c085141ab53, +0x2748774cdf8eeb99, +0x34b0bcb5e19b48a8,
-        +0x391c0cb3c5c95a63, +0x4ed8aa4ae3418acb, +0x5b9cca4f7763e373, +0x682e6ff3d6b2b8a3,
-        +0x748f82ee5defb2fc, +0x78a5636f43172f60, -0x7b3787eb5e0f548e, -0x7338fdf7e59bc614,
-        -0x6f410005dc9ce1d8, -0x5baf9314217d4217, -0x41065c084d3986eb, -0x398e870d1c8dacd5,
-        -0x35d8c13115d99e64, -0x2e794738de3f3df9, -0x15258229321f14e2, -0x0a82b08011912e88,
-        +0x06f067aa72176fba, +0x0a637dc5a2c898a6, +0x113f9804bef90dae, +0x1b710b35131c471b,
-        +0x28db77f523047d84, +0x32caab7b40c72493, +0x3c9ebe0a15c9bebc, +0x431d67c49c100d4c,
-        +0x4cc5d4becb3e42b6, +0x597f299cfc657e2a, +0x5fcb6fab3ad6faec, +0x6c44198c4a475817,
-    )
-
-    override fun hashInto(value: ByteArray, destination: ByteArray, destinationOffset: Int) {
-        val input = pad(value)
-        val h = initial.copyOf()
-
-        for (i in input.indices step block) {
-            val block = input.sliceArray(i..<(i + block))
-            process(h, block)
+    override fun reset() {
+        super.reset()
+        initial.copyInto(h)
     }
+
+    override fun process() = process(buffer.value)
+
+    private fun finalize() {
+        buffer.append(0x80.toByte())
+        if (buffer.free < 16) {
+            process(buffer.value)
+            buffer.reset()
+        }
+        buffer.jumpTo(112)
+        buffer.append(length * 8)
+
+        process(buffer.value)
+    }
+
+    override fun digestInto(destination: ByteArray, destinationOffset: Int) {
+        finalize()
         h.copyInto(destination, destinationOffset)
+        reset()
     }
 
-    internal fun pad(value: ByteArray): ByteArray {
-        val length = value.size * 8L
-
-        val size = (value.size + 17).align(block)
-        return ByteArray(size).also {
-            value.copyInto(it)
-            it[value.size] = -0x80
-            length.copyInto(it, size - 8)
-        }
-    }
-
-    internal fun process(h: LongArray, block: ByteArray) {
-        val w = LongArray(80)
+    private fun process(block: ByteArray) {
         block.copyInto(w)
         for (i in 16..<80) {
             val s0 = w[i - 15].rotateRight(1) xor w[i - 15].rotateRight(8) xor (w[i - 15] ushr 7)
             val s1 = w[i - 2].rotateRight(19) xor w[i - 2].rotateRight(61) xor (w[i - 2] ushr 6)
             w[i] = (w[i - 16] + s0 + w[i - 7] + s1)
         }
-        val v = h.copyOf()
+        h.copyInto(v)
 
         repeat(80) { i ->
             val s0 = v[0].rotateRight(28) xor v[0].rotateRight(34) xor v[0].rotateRight(39)
@@ -97,4 +66,36 @@ object `SHA-512` : HashFunction {
             h[i] += v[i]
         }
     }
+
+    companion object {
+        private val initial = longArrayOf(
+            +0x6a09e667f3bcc908, -0x4498517a7b3558c5,
+            +0x3c6ef372fe94f82b, -0x5ab00ac5a0e2c90f,
+            +0x510e527fade682d1, -0x64fa9773d4c193e1,
+            +0x1f83d9abfb41bd6b, +0x5be0cd19137e2179,
+        )
+
+        internal val c = longArrayOf(
+            +0x428a2f98d728ae22, +0x7137449123ef65cd, -0x4a3f043013b2c4d1, -0x164a245a7e762444,
+            +0x3956c25bf348b538, +0x59f111f1b605d019, -0x6dc07d5b50e6b065, -0x54e3a12a25927ee8,
+            -0x27f855675cfcfdbe, +0x12835b0145706fbe, +0x243185be4ee4b28c, +0x550c7dc3d5ffb4e2,
+            +0x72be5d74f27b896f, -0x7f214e01c4e9694f, -0x6423f958da38edcb, -0x3e640e8b3096d96c,
+            -0x1b64963e610eb52e, -0x1041b879c7b0da1d, +0x0fc19dc68b8cd5b5, +0x240ca1cc77ac9c65,
+            +0x2de92c6f592b0275, +0x4a7484aa6ea6e483, +0x5cb0a9dcbd41fbd4, +0x76f988da831153b5,
+            -0x67c1aead11992055, -0x57ce3992d24bcdf0, -0x4ffcd8376704dec1, -0x40a680384110f11c,
+            -0x391ff40cc257703e, -0x2a586eb86cf558db, +0x06ca6351e003826f, +0x142929670a0e6e70,
+            +0x27b70a8546d22ffc, +0x2e1b21385c26c926, +0x4d2c6dfc5ac42aed, +0x53380d139d95b3df,
+            +0x650a73548baf63de, +0x766a0abb3c77b2a8, -0x7e3d36d1b812511a, -0x6d8dd37aeb7dcac5,
+            -0x5d40175eb30efc9c, -0x57e599b443bdcfff, -0x3db4748f2f07686f, -0x3893ae5cf9ab41d0,
+            -0x2e6d17e62910ade8, -0x2966f9dbaa9a56f0, -0x0bf1ca7aa88edfd6, +0x106aa07032bbd1b8,
+            +0x19a4c116b8d2d0c8, +0x1e376c085141ab53, +0x2748774cdf8eeb99, +0x34b0bcb5e19b48a8,
+            +0x391c0cb3c5c95a63, +0x4ed8aa4ae3418acb, +0x5b9cca4f7763e373, +0x682e6ff3d6b2b8a3,
+            +0x748f82ee5defb2fc, +0x78a5636f43172f60, -0x7b3787eb5e0f548e, -0x7338fdf7e59bc614,
+            -0x6f410005dc9ce1d8, -0x5baf9314217d4217, -0x41065c084d3986eb, -0x398e870d1c8dacd5,
+            -0x35d8c13115d99e64, -0x2e794738de3f3df9, -0x15258229321f14e2, -0x0a82b08011912e88,
+            +0x06f067aa72176fba, +0x0a637dc5a2c898a6, +0x113f9804bef90dae, +0x1b710b35131c471b,
+            +0x28db77f523047d84, +0x32caab7b40c72493, +0x3c9ebe0a15c9bebc, +0x431d67c49c100d4c,
+            +0x4cc5d4becb3e42b6, +0x597f299cfc657e2a, +0x5fcb6fab3ad6faec, +0x6c44198c4a475817,
+        )
+    }
 }

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

@@ -1,6 +0,0 @@
-package com.infendro.hash.util
-
-internal fun Int.align(n: Int): Int = when {
-    n and (n - 1) == 0 -> (this + n - 1) and (n - 1).inv()
-    else -> ((this + n - 1) / n) * n
-}

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

@@ -5,7 +5,7 @@ import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 
 class `Blake-224_Test` {
-    val function = `Blake-224`
+    val function = `Blake-224`()
 
     @Test
     fun `bytes and block`() {

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

@@ -5,7 +5,7 @@ import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 
 class `Blake-256_Test` {
-    val function = `Blake-256`
+    val function = `Blake-256`()
 
     @Test
     fun `bytes and block`() {

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

@@ -5,7 +5,7 @@ import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 
 class `Blake-384_Test` {
-    val function = `Blake-384`
+    val function = `Blake-384`()
 
     @Test
     fun `bytes and block`() {

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

@@ -5,7 +5,7 @@ import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 
 class `Blake-512_Test` {
-    val function = `Blake-512`
+    val function = `Blake-512`()
 
     @Test
     fun `bytes and block`() {

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

@@ -5,7 +5,7 @@ import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 
 class `SHA3-224_Test` {
-    val function = `SHA3-224`
+    val function = `SHA3-224`()
 
     @Test
     fun `bytes and block`() {

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

@@ -5,7 +5,7 @@ import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 
 class `SHA3-256_Test` {
-    val function = `SHA3-256`
+    val function = `SHA3-256`()
 
     @Test
     fun `bytes and block`() {

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

@@ -5,7 +5,7 @@ import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 
 class `SHA3-384_Test` {
-    val function = `SHA3-384`
+    val function = `SHA3-384`()
 
     @Test
     fun `bytes and block`() {

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

@@ -5,7 +5,7 @@ import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 
 class `SHA3-512_Test` {
-    val function = `SHA3-512`
+    val function = `SHA3-512`()
 
     @Test
     fun `bytes and block`() {

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

@@ -5,7 +5,7 @@ import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 
 class MD5_Test {
-    val function = MD5
+    val function = MD5()
 
     @Test
     fun `bytes and block`() {

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

@@ -5,7 +5,7 @@ import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 
 class SHA1_Test {
-    val function = SHA1
+    val function = SHA1()
 
     @Test
     fun `bytes and block`() {

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

@@ -5,7 +5,7 @@ import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 
 class `SHA-224_Test` {
-    val function = `SHA-224`
+    val function = `SHA-224`()
 
     @Test
     fun `bytes and block`() {

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

@@ -5,7 +5,7 @@ import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 
 class `SHA-256_Test` {
-    val function = `SHA-256`
+    val function = `SHA-256`()
 
     @Test
     fun `bytes and block`() {

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

@@ -5,7 +5,7 @@ import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 
 class `SHA-384_Test` {
-    val function = `SHA-384`
+    val function = `SHA-384`()
 
     @Test
     fun `bytes and block`() {

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

@@ -5,7 +5,7 @@ import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 
 class `SHA-512_Test` {
-    val function = `SHA-512`
+    val function = `SHA-512`()
 
     @Test
     fun `bytes and block`() {