Update README.md

small rewording, link wikipedia article

.gitea/workflows/main.yaml

@@ -1,36 +0,0 @@
-on:
-  push:
-    branches:
-      - main
-
-env:
-  INFENDRO__TOKEN: ${{ secrets.TOKEN }}
-
-jobs:
-  publish:
-    runs-on: linux
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: actions/cache/restore@v4
-        with:
-          key: gradle
-          path: |
-            ~/.gradle/caches/
-            ~/.gradle/wrapper/
-            ~/.konan/
-
-      - uses: actions/setup-java@v4
-        with:
-          java-version: '24'
-          distribution: 'temurin'
-
-      - run: ./gradlew publish
-
-      - uses: actions/cache/save@v4
-        with:
-          key: gradle
-          path: |
-            ~/.gradle/caches/
-            ~/.gradle/wrapper/
-            ~/.konan/

.gitea/workflows/publish.yaml

@@ -0,0 +1,47 @@
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  publish:
+    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: Publish
+        run: ./gradlew publish
+        env:
+          INFENDRO__TOKEN: ${{ secrets.TOKEN }}

.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

@@ -1,15 +1,9 @@
-# Kotlin KDF
+# kdf.kt
 
-This library provides various [Key Derivation Function](https://en.wikipedia.org/wiki/Key_derivation_function)
-implementations in Kotlin Multiplatform.
+`kdf.kt` is a Kotlin Multiplatform library that provides common [Key Derivation Functions](https://en.wikipedia.org/wiki/Key_derivation_function).
 
-## Features
-
-* [PBKDF2](https://en.wikipedia.org/wiki/PBKDF2)
-* Multiplatform support
-    * JVM
-    * JavaScript
-    * Native (Linux)
+Supported algorithms:
+- PBKDF2
 
 ## Installation
 
@@ -21,24 +15,21 @@ repositories {
 }
 
 dependencies {
-    implementation("com.infendro:kdf:1.0.3")
+    implementation("com.infendro:kdf:1.2.1")
 }
 ```
 
 ## Usage
 
 ```kotlin
-import com.infendro.hash.SHA256
-import com.infendro.kdf.PBKDF2
-
 fun main() {
-    // create a PBKDF2 instance using HMAC SHA256
-    val kdf = PBKDF2(SHA256)
+    // create a PBKDF2 instance using HMAC SHA-256
+    //   this example uses 32 bytes of length and 100_000 iterations
+    val kdf = PBKDF2(32, 100_000, `SHA-256`())
 
     // securely hash value with some salt
-    //   this example uses 100_000 iterations and 32 bytes of length
     val value = "password".encodeToByteArray()
-    val salt = "...".encodeToByteArray()
-    val hash = kdf.hash(value, salt, 100_000, 32)
+    val salt = "salt".encodeToByteArray()
+    val hash = kdf.hash(value, salt)
 }
 ```

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 = "1.1.0"
+version = "1.2.1"
 
 plugins {
     alias(libs.plugins.infendro)
@@ -12,10 +15,14 @@ plugins {
 
 kotlin {
     jvm()
-    js {
-        nodejs()
-    }
     linuxX64()
+    linuxArm64()
+    mingwX64()
+    macosX64()
+    macosArm64()
+    js { nodejs() }
+    wasmJs { nodejs() }
+    wasmWasi { nodejs() }
 
     repositories {
         infendro()
@@ -24,18 +31,14 @@ kotlin {
 
     sourceSets {
         commonMain.dependencies {
-            implementation(libs.mac)
+            implementation(libs.bytes)
             implementation(libs.hash)
-            implementation(libs.bytearray)
+            implementation(libs.mac)
         }
         commonTest.dependencies {
             implementation(libs.test)
         }
     }
-
-    compilerOptions {
-        freeCompilerArgs.add("-opt-in=kotlin.ExperimentalUnsignedTypes")
-    }
 }
 
 publishing.repositories {

gradle/libs.versions.toml

@@ -1,16 +1,16 @@
 [versions]
-infendro = "1.0.0"
-kotlin = "2.2.21"
-mac = "1.2.0"
-hash = "1.3.2"
-bytearray = "1.2.4"
+infendro = "1.1.0"
+kotlin = "2.3.0"
+bytes = "1.4.2"
+hash = "1.7.0"
+mac = "1.5.0"
 
 [plugins]
 infendro = { id = "com.infendro.plugin", version.ref = "infendro" }
 multiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref = "kotlin" }
 
 [libraries]
-mac = { module = "com.infendro:mac", version.ref = "mac" }
+bytes = { module = "com.infendro:bytes", version.ref = "bytes" }
 hash = { module = "com.infendro:hash", version.ref = "hash" }
-bytearray = { module = "com.infendro:bytearray", version.ref = "bytearray" }
+mac = { module = "com.infendro:mac", version.ref = "mac" }
 test = { module = "org.jetbrains.kotlin:kotlin-test", version.ref = "kotlin" }

src/commonMain/kotlin/com/infendro/kdf/KDF.kt

@@ -5,8 +5,11 @@ interface KDF {
     val bits: Int
         get() = bytes * 8
 
-    fun hash(
-        value: UByteArray,
-        salt: UByteArray,
-    ): UByteArray
+    fun hashInto(value: ByteArray, salt: ByteArray, destination: ByteArray, destinationOffset: Int = 0)
+
+    fun hash(value: ByteArray, salt: ByteArray): ByteArray {
+        val result = ByteArray(bytes)
+        hashInto(value, salt, result)
+        return result
+    }
 }

src/commonMain/kotlin/com/infendro/kdf/PBKDF2.kt

@@ -1,10 +1,10 @@
 package com.infendro.kdf
 
-import com.infendro.bytearray.toUByteArray
-import com.infendro.bytearray.xor
+import com.infendro.bytes.bytearray.xorWith
+import com.infendro.bytes.int.toByteArray
 import com.infendro.hash.HashFunction
+import com.infendro.kdf.util.ceilDiv
 import com.infendro.mac.HMAC
-import kotlin.math.min
 
 class PBKDF2(
     override val bytes: Int,
@@ -12,38 +12,30 @@ class PBKDF2(
     function: HashFunction,
 ) : KDF {
     init {
-        if (bytes < 1) throw IllegalArgumentException()
-        if (iterations < 1) throw IllegalArgumentException()
+        require(bytes > 0)
+        require(iterations > 0)
     }
 
-    private val mac = HMAC(function)
+    private val hmac = HMAC(function)
+    private val buffer = ByteArray(hmac.bytes)
 
-    override fun hash(
-        value: UByteArray,
-        salt: UByteArray,
-    ): UByteArray {
-        return buildList {
-            var i = 1
-            while (size < bytes) {
-                addAll(
-                    f(value, salt, i)
-                        .sliceArray(0..<min(bytes - size, mac.bytes))
-                )
-                i++
-            }
-        }.toUByteArray()
-    }
+    override fun hashInto(value: ByteArray, salt: ByteArray, destination: ByteArray, destinationOffset: Int) {
+        hmac.init(value)
 
-    private fun f(
-        value: UByteArray,
-        salt: UByteArray,
-        iteration: Int,
-    ): UByteArray {
-        return buildList {
-            add(mac.hash(value, salt + iteration.toUByteArray()))
+        for (block in 1..bytes.ceilDiv(hmac.bytes)) {
+            val offset = (block - 1) * hmac.bytes
+            val bytes = minOf(bytes - offset, hmac.bytes)
+
+            hmac.update(salt)
+            hmac.update(block.toByteArray())
+            hmac.digestInto(buffer)
+            buffer.copyInto(destination, destinationOffset + offset, endIndex = bytes)
             repeat(iterations - 1) {
-                add(mac.hash(value, last()))
-            }
-        }.reduce { acc, bytes -> acc xor bytes }
+                hmac.update(buffer)
+                hmac.digestInto(buffer)
+                val offset = destinationOffset + offset
+                destination.xorWith(buffer, offset, offset + bytes)
+            }
+        }
     }
 }

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

@@ -0,0 +1,4 @@
+package com.infendro.kdf.util
+
+internal fun Int.ceilDiv(n: Int): Int =
+    (this + n - 1) / n

src/commonTest/kotlin/com/infendro/kdf/PBKDF2.kt

@@ -1,118 +1,117 @@
 package com.infendro.kdf
 
-import com.infendro.bytearray.encodeToUByteArray
 import com.infendro.hash.sha2.`SHA-256`
 import kotlin.test.Test
 import kotlin.test.assertContentEquals
 
 class `PBKDF2 Test` {
     @Test
-    fun `32 bytes, 1 iteration`() {
-        val function = PBKDF2(32, 1, `SHA-256`)
+    fun `32 bytes 1 iteration`() {
+        val function = PBKDF2(32, 1, `SHA-256`())
 
-        val expected = ubyteArrayOf(
-            0x12U, 0x0fU, 0xb6U, 0xcfU, 0xfcU, 0xf8U, 0xb3U, 0x2cU,
-            0x43U, 0xe7U, 0x22U, 0x52U, 0x56U, 0xc4U, 0xf8U, 0x37U,
-            0xa8U, 0x65U, 0x48U, 0xc9U, 0x2cU, 0xccU, 0x35U, 0x48U,
-            0x08U, 0x05U, 0x98U, 0x7cU, 0xb7U, 0x0bU, 0xe1U, 0x7bU,
+        val expected = byteArrayOf(
+            +0x12, +0x0f, -0x4a, -0x31, -0x04, -0x08, -0x4d, +0x2c,
+            +0x43, -0x19, +0x22, +0x52, +0x56, -0x3c, -0x08, +0x37,
+            -0x58, +0x65, +0x48, -0x37, +0x2c, -0x34, +0x35, +0x48,
+            +0x08, +0x05, -0x68, +0x7c, -0x49, +0x0b, -0x1f, +0x7b,
         )
         val actual = function.hash(
-            "password".encodeToUByteArray(),
-            "salt".encodeToUByteArray(),
+            "password".encodeToByteArray(),
+            "salt".encodeToByteArray(),
         )
         assertContentEquals(expected, actual)
     }
 
     @Test
-    fun `32 bytes, 2 iterations`() {
-        val function = PBKDF2(32, 2, `SHA-256`)
+    fun `32 bytes 2 iterations`() {
+        val function = PBKDF2(32, 2, `SHA-256`())
 
-        val expected = ubyteArrayOf(
-            0xaeU, 0x4dU, 0x0cU, 0x95U, 0xafU, 0x6bU, 0x46U, 0xd3U,
-            0x2dU, 0x0aU, 0xdfU, 0xf9U, 0x28U, 0xf0U, 0x6dU, 0xd0U,
-            0x2aU, 0x30U, 0x3fU, 0x8eU, 0xf3U, 0xc2U, 0x51U, 0xdfU,
-            0xd6U, 0xe2U, 0xd8U, 0x5aU, 0x95U, 0x47U, 0x4cU, 0x43U,
+        val expected = byteArrayOf(
+            -0x52, +0x4d, +0x0c, -0x6b, -0x51, +0x6b, +0x46, -0x2d,
+            +0x2d, +0x0a, -0x21, -0x07, +0x28, -0x10, +0x6d, -0x30,
+            +0x2a, +0x30, +0x3f, -0x72, -0x0d, -0x3e, +0x51, -0x21,
+            -0x2a, -0x1e, -0x28, +0x5a, -0x6b, +0x47, +0x4c, +0x43,
         )
         val actual = function.hash(
-            "password".encodeToUByteArray(),
-            "salt".encodeToUByteArray(),
+            "password".encodeToByteArray(),
+            "salt".encodeToByteArray(),
         )
         assertContentEquals(expected, actual)
     }
 
     @Test
-    fun `32 bytes, 4096 iterations`() {
-        val function = PBKDF2(32, 4096, `SHA-256`)
+    fun `32 bytes 4096 iterations`() {
+        val function = PBKDF2(32, 4096, `SHA-256`())
 
-        val expected = ubyteArrayOf(
-            0xc5U, 0xe4U, 0x78U, 0xd5U, 0x92U, 0x88U, 0xc8U, 0x41U,
-            0xaaU, 0x53U, 0x0dU, 0xb6U, 0x84U, 0x5cU, 0x4cU, 0x8dU,
-            0x96U, 0x28U, 0x93U, 0xa0U, 0x01U, 0xceU, 0x4eU, 0x11U,
-            0xa4U, 0x96U, 0x38U, 0x73U, 0xaaU, 0x98U, 0x13U, 0x4aU,
+        val expected = byteArrayOf(
+            -0x3b, -0x1c, +0x78, -0x2b, -0x6e, -0x78, -0x38, +0x41,
+            -0x56, +0x53, +0x0d, -0x4a, -0x7c, +0x5c, +0x4c, -0x73,
+            -0x6a, +0x28, -0x6d, -0x60, +0x01, -0x32, +0x4e, +0x11,
+            -0x5c, -0x6a, +0x38, +0x73, -0x56, -0x68, +0x13, +0x4a,
         )
         val actual = function.hash(
-            "password".encodeToUByteArray(),
-            "salt".encodeToUByteArray(),
+            "password".encodeToByteArray(),
+            "salt".encodeToByteArray(),
         )
         assertContentEquals(expected, actual)
     }
 
     @Test
-    fun `40 bytes, 4096 iterations`() {
-        val function = PBKDF2(40, 4096, `SHA-256`)
+    fun `40 bytes 4096 iterations`() {
+        val function = PBKDF2(40, 4096, `SHA-256`())
 
-        val expected = ubyteArrayOf(
-            0xc5U, 0xe4U, 0x78U, 0xd5U, 0x92U, 0x88U, 0xc8U, 0x41U,
-            0xaaU, 0x53U, 0x0dU, 0xb6U, 0x84U, 0x5cU, 0x4cU, 0x8dU,
-            0x96U, 0x28U, 0x93U, 0xa0U, 0x01U, 0xceU, 0x4eU, 0x11U,
-            0xa4U, 0x96U, 0x38U, 0x73U, 0xaaU, 0x98U, 0x13U, 0x4aU,
-            0xf7U, 0xadU, 0x98U, 0xc1U, 0xb4U, 0x58U, 0xceU, 0x3fU,
+        val expected = byteArrayOf(
+            -0x3b, -0x1c, +0x78, -0x2b, -0x6e, -0x78, -0x38, +0x41,
+            -0x56, +0x53, +0x0d, -0x4a, -0x7c, +0x5c, +0x4c, -0x73,
+            -0x6a, +0x28, -0x6d, -0x60, +0x01, -0x32, +0x4e, +0x11,
+            -0x5c, -0x6a, +0x38, +0x73, -0x56, -0x68, +0x13, +0x4a,
+            -0x09, -0x53, -0x68, -0x3f, -0x4c, +0x58, -0x32, +0x3f,
         )
         val actual = function.hash(
-            "password".encodeToUByteArray(),
-            "salt".encodeToUByteArray(),
+            "password".encodeToByteArray(),
+            "salt".encodeToByteArray(),
         )
         assertContentEquals(expected, actual)
     }
 
     @Test
-    fun `64 bytes, 1 iteration`() {
-        val function = PBKDF2(64, 1, `SHA-256`)
+    fun `64 bytes 1 iteration`() {
+        val function = PBKDF2(64, 1, `SHA-256`())
 
-        val expected = ubyteArrayOf(
-            0x55U, 0xacU, 0x04U, 0x6eU, 0x56U, 0xe3U, 0x08U, 0x9fU,
-            0xecU, 0x16U, 0x91U, 0xc2U, 0x25U, 0x44U, 0xb6U, 0x05U,
-            0xf9U, 0x41U, 0x85U, 0x21U, 0x6dU, 0xdeU, 0x04U, 0x65U,
-            0xe6U, 0x8bU, 0x9dU, 0x57U, 0xc2U, 0x0dU, 0xacU, 0xbcU,
-            0x49U, 0xcaU, 0x9cU, 0xccU, 0xf1U, 0x79U, 0xb6U, 0x45U,
-            0x99U, 0x16U, 0x64U, 0xb3U, 0x9dU, 0x77U, 0xefU, 0x31U,
-            0x7cU, 0x71U, 0xb8U, 0x45U, 0xb1U, 0xe3U, 0x0bU, 0xd5U,
-            0x09U, 0x11U, 0x20U, 0x41U, 0xd3U, 0xa1U, 0x97U, 0x83U,
+        val expected = byteArrayOf(
+            +0x55, -0x54, +0x04, +0x6e, +0x56, -0x1d, +0x08, -0x61,
+            -0x14, +0x16, -0x6f, -0x3e, +0x25, +0x44, -0x4a, +0x05,
+            -0x07, +0x41, -0x7b, +0x21, +0x6d, -0x22, +0x04, +0x65,
+            -0x1a, -0x75, -0x63, +0x57, -0x3e, +0x0d, -0x54, -0x44,
+            +0x49, -0x36, -0x64, -0x34, -0x0f, +0x79, -0x4a, +0x45,
+            -0x67, +0x16, +0x64, -0x4d, -0x63, +0x77, -0x11, +0x31,
+            +0x7c, +0x71, -0x48, +0x45, -0x4f, -0x1d, +0x0b, -0x2b,
+            +0x09, +0x11, +0x20, +0x41, -0x2d, -0x5f, -0x69, -0x7d,
         )
         val actual = function.hash(
-            "passwd".encodeToUByteArray(),
-            "salt".encodeToUByteArray(),
+            "passwd".encodeToByteArray(),
+            "salt".encodeToByteArray(),
         )
         assertContentEquals(expected, actual)
     }
 
     @Test
-    fun `64 bytes, 80,000 iterations`() {
-        val function = PBKDF2(64, 80_000, `SHA-256`)
+    fun `64 bytes 80000 iterations`() {
+        val function = PBKDF2(64, 80_000, `SHA-256`())
 
-        val expected = ubyteArrayOf(
-            0x4dU, 0xdcU, 0xd8U, 0xf6U, 0x0bU, 0x98U, 0xbeU, 0x21U,
-            0x83U, 0x0cU, 0xeeU, 0x5eU, 0xf2U, 0x27U, 0x01U, 0xf9U,
-            0x64U, 0x1aU, 0x44U, 0x18U, 0xd0U, 0x4cU, 0x04U, 0x14U,
-            0xaeU, 0xffU, 0x08U, 0x87U, 0x6bU, 0x34U, 0xabU, 0x56U,
-            0xa1U, 0xd4U, 0x25U, 0xa1U, 0x22U, 0x58U, 0x33U, 0x54U,
-            0x9aU, 0xdbU, 0x84U, 0x1bU, 0x51U, 0xc9U, 0xb3U, 0x17U,
-            0x6aU, 0x27U, 0x2bU, 0xdeU, 0xbbU, 0xa1U, 0xd0U, 0x78U,
-            0x47U, 0x8fU, 0x62U, 0xb3U, 0x97U, 0xf3U, 0x3cU, 0x8dU,
+        val expected = byteArrayOf(
+            +0x4d, -0x24, -0x28, -0x0a, +0x0b, -0x68, -0x42, +0x21,
+            -0x7d, +0x0c, -0x12, +0x5e, -0x0e, +0x27, +0x01, -0x07,
+            +0x64, +0x1a, +0x44, +0x18, -0x30, +0x4c, +0x04, +0x14,
+            -0x52, -0x01, +0x08, -0x79, +0x6b, +0x34, -0x55, +0x56,
+            -0x5f, -0x2c, +0x25, -0x5f, +0x22, +0x58, +0x33, +0x54,
+            -0x66, -0x25, -0x7c, +0x1b, +0x51, -0x37, -0x4d, +0x17,
+            +0x6a, +0x27, +0x2b, -0x22, -0x45, -0x5f, -0x30, +0x78,
+            +0x47, -0x71, +0x62, -0x4d, -0x69, -0x0d, +0x3c, -0x73,
         )
         val actual = function.hash(
-            "Password".encodeToByteArray().toUByteArray(),
-            "NaCl".encodeToByteArray().toUByteArray()
+            "Password".encodeToByteArray(),
+            "NaCl".encodeToByteArray(),
         )
         assertContentEquals(expected, actual)
     }