Update README.md

small rewording, link wikipedia article

.gitea/workflows/main.yaml

@@ -1,36 +0,0 @@
-on:
-  push:
-    branches:
-      - main
-
-env:
-  GIT__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

@@ -0,0 +1,35 @@
+# kdf.kt
+
+`kdf.kt` is a Kotlin Multiplatform library that provides common [Key Derivation Functions](https://en.wikipedia.org/wiki/Key_derivation_function).
+
+Supported algorithms:
+- PBKDF2
+
+## Installation
+
+Add the following to your `build.gradle.kts`.
+
+```kotlin
+repositories {
+    maven("https://git.infendro.com/api/packages/Infendro/maven")
+}
+
+dependencies {
+    implementation("com.infendro:kdf:1.2.1")
+}
+```
+
+## Usage
+
+```kotlin
+fun main() {
+    // 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
+    val value = "password".encodeToByteArray()
+    val salt = "salt".encodeToByteArray()
+    val hash = kdf.hash(value, salt)
+}
+```

build.gradle.kts

@@ -1,56 +1,46 @@
-group = "com.infendro"
-version = "1.0.0"
+@file:OptIn(ExperimentalWasmDsl::class)
 
-repositories {
-    maven("https://git.infendro.com/api/packages/Infendro/maven")
-    mavenCentral()
-}
+import com.infendro.plugin.infendro
+import com.infendro.plugin.token
+import org.jetbrains.kotlin.gradle.ExperimentalWasmDsl
+
+group = "com.infendro"
+version = "1.2.1"
 
 plugins {
+    alias(libs.plugins.infendro)
     alias(libs.plugins.multiplatform)
     id("maven-publish")
 }
 
 kotlin {
     jvm()
-    js {
-        nodejs()
-    }
     linuxX64()
+    linuxArm64()
+    mingwX64()
+    macosX64()
+    macosArm64()
+    js { nodejs() }
+    wasmJs { nodejs() }
+    wasmWasi { nodejs() }
+
+    repositories {
+        infendro()
+        mavenCentral()
+    }
 
     sourceSets {
         commonMain.dependencies {
-            implementation(libs.mac)
+            implementation(libs.bytes)
             implementation(libs.hash)
+            implementation(libs.mac)
+        }
+        commonTest.dependencies {
+            implementation(libs.test)
         }
     }
 }
 
-publishing {
-    repositories {
-        maven {
-            url = uri("https://git.infendro.com/api/packages/Infendro/maven")
-            authentication.create("header", HttpHeaderAuthentication::class)
-            credentials(HttpHeaderCredentials::class) {
-                val token = secret("git.token") ?: throw GradleException()
-
-                name = "Authorization"
-                value = "token $token"
-            }
-        }
-    }
-}
-
-fun secret(
-    key: String,
-): String? {
-    val property = key
-    val environment = key
-        .uppercase()
-        .replace(".", "__")
-
-    val prop = properties[property] as String?
-    val env = System.getenv(environment)
-
-    return prop ?: env
+publishing.repositories {
+    infendro(token)
 }

gradle/libs.versions.toml

@@ -1,11 +1,16 @@
 [versions]
-kotlin = "2.1.20"
-mac = "1.1.0"
-hash = "1.2.0"
+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" }
+mac = { module = "com.infendro:mac", version.ref = "mac" }
+test = { module = "org.jetbrains.kotlin:kotlin-test", version.ref = "kotlin" }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,7 @@
-#Sun May 18 00:11:37 CEST 2025
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.10.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -15,6 +15,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 
 ##############################################################################
 #
@@ -55,7 +57,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -80,13 +82,11 @@ do
     esac
 done
 
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
-
-APP_NAME="Gradle"
+# This is normally unused
+# shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
-
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -114,7 +114,7 @@ case "$( uname )" in                #(
   NONSTOP* )        nonstop=true ;;
 esac
 
-CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+CLASSPATH="\\\"\\\""
 
 
 # Determine the Java command to use to start the JVM.
@@ -133,22 +133,29 @@ location of your Java installation."
     fi
 else
     JAVACMD=java
-    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 
 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
+    fi
 fi
 
 # Increase the maximum file descriptors if we can.
 if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
     case $MAX_FD in  #(
       '' | soft) :;; #(
       *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
@@ -193,18 +200,28 @@ if "$cygwin" || "$msys" ; then
     done
 fi
 
-# Collect all arguments for the java command;
-#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
-#     shell script including quotes and variable substitutions, so put them in
-#     double quotes to make sure that they get re-expanded; and
-#   * put everything else in single quotes, so that it's not re-expanded.
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
         -classpath "$CLASSPATH" \
-        org.gradle.wrapper.GradleWrapperMain \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
         "$@"
 
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
 # Use "xargs" to parse quoted args.
 #
 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.

gradlew.bat

@@ -13,8 +13,10 @@
 @rem See the License for the specific language governing permissions and
 @rem limitations under the License.
 @rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
 
-@if "%DEBUG%" == "" @echo off
+@if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
 @rem  Gradle startup script for Windows
@@ -25,7 +27,8 @@
 if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
@@ -40,13 +43,13 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto execute
+if %ERRORLEVEL% equ 0 goto execute
 
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
 
 goto fail
 
@@ -56,32 +59,34 @@ set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 
 if exist "%JAVA_EXE%" goto execute
 
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
 
 goto fail
 
 :execute
 @rem Setup the command line
 
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+set CLASSPATH=
 
 
 @rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
 
 :end
 @rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
+if %ERRORLEVEL% equ 0 goto mainEnd
 
 :fail
 rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
 rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
 
 :mainEnd
 if "%OS%"=="Windows_NT" endlocal

settings.gradle.kts

@@ -1 +1,6 @@
 rootProject.name = "kdf"
+
+pluginManagement.repositories {
+    maven("https://git.infendro.com/api/packages/Infendro/maven")
+    mavenCentral()
+}

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

@@ -0,0 +1,15 @@
+package com.infendro.kdf
+
+interface KDF {
+    val bytes: Int
+    val bits: Int
+        get() = bytes * 8
+
+    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

@@ -1,45 +1,41 @@
 package com.infendro.kdf
 
+import com.infendro.bytes.bytearray.xorWith
+import com.infendro.bytes.int.toByteArray
 import com.infendro.hash.HashFunction
-import com.infendro.kdf.util.addAll
-import com.infendro.kdf.util.toByteArray
-import com.infendro.kdf.util.xor
+import com.infendro.kdf.util.ceilDiv
 import com.infendro.mac.HMAC
 
 class PBKDF2(
+    override val bytes: Int,
+    private val iterations: Int,
     function: HashFunction,
-) {
-    private val size = function.bytes
+) : KDF {
+    init {
+        require(bytes > 0)
+        require(iterations > 0)
+    }
+
     private val hmac = HMAC(function)
+    private val buffer = ByteArray(hmac.bytes)
 
-    fun hash(
-        value: ByteArray,
-        salt: ByteArray,
-        iterations: Int,
-        length: Int,
-    ): ByteArray {
-        val key = mutableListOf<Byte>()
+    override fun hashInto(value: ByteArray, salt: ByteArray, destination: ByteArray, destinationOffset: Int) {
+        hmac.init(value)
 
-        for (i in 1..(length + size - 1) / size) {
-            val input = salt + i.toUInt().toByteArray()
+        for (block in 1..bytes.ceilDiv(hmac.bytes)) {
+            val offset = (block - 1) * hmac.bytes
+            val bytes = minOf(bytes - offset, hmac.bytes)
 
-            var u = hmac.hash(value, input)
-            var result = u
+            hmac.update(salt)
+            hmac.update(block.toByteArray())
+            hmac.digestInto(buffer)
+            buffer.copyInto(destination, destinationOffset + offset, endIndex = bytes)
             repeat(iterations - 1) {
-                u = hmac.hash(value, u)
-                result = result xor u
-            }
-
-            key.addAll(result)
-
-            if (key.size >= length) {
-                println(key.size)
-                break
+                hmac.update(buffer)
+                hmac.digestInto(buffer)
+                val offset = destinationOffset + offset
+                destination.xorWith(buffer, offset, offset + bytes)
             }
         }
-
-        return key
-            .take(length)
-            .toByteArray()
     }
 }

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

@@ -1,26 +0,0 @@
-package com.infendro.kdf.util
-
-import kotlin.experimental.xor
-
-internal infix fun ByteArray.xor(
-    that: ByteArray,
-): ByteArray {
-    if (this.size != that.size) throw Exception()
-
-    return ByteArray(size) { i ->
-        this[i] xor that[i]
-    }
-}
-
-internal fun MutableCollection<Byte>.addAll(
-    bytes: ByteArray,
-): Boolean {
-    return addAll(bytes.toList())
-}
-
-internal fun UInt.toByteArray(): ByteArray {
-    return ByteArray(4) { i ->
-        val offset = (3 - i) * 8
-        (this shr offset).toByte()
-    }
-}

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

@@ -0,0 +1,118 @@
+package com.infendro.kdf
+
+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`())
+
+        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".encodeToByteArray(),
+            "salt".encodeToByteArray(),
+        )
+        assertContentEquals(expected, actual)
+    }
+
+    @Test
+    fun `32 bytes 2 iterations`() {
+        val function = PBKDF2(32, 2, `SHA-256`())
+
+        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".encodeToByteArray(),
+            "salt".encodeToByteArray(),
+        )
+        assertContentEquals(expected, actual)
+    }
+
+    @Test
+    fun `32 bytes 4096 iterations`() {
+        val function = PBKDF2(32, 4096, `SHA-256`())
+
+        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".encodeToByteArray(),
+            "salt".encodeToByteArray(),
+        )
+        assertContentEquals(expected, actual)
+    }
+
+    @Test
+    fun `40 bytes 4096 iterations`() {
+        val function = PBKDF2(40, 4096, `SHA-256`())
+
+        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".encodeToByteArray(),
+            "salt".encodeToByteArray(),
+        )
+        assertContentEquals(expected, actual)
+    }
+
+    @Test
+    fun `64 bytes 1 iteration`() {
+        val function = PBKDF2(64, 1, `SHA-256`())
+
+        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".encodeToByteArray(),
+            "salt".encodeToByteArray(),
+        )
+        assertContentEquals(expected, actual)
+    }
+
+    @Test
+    fun `64 bytes 80000 iterations`() {
+        val function = PBKDF2(64, 80_000, `SHA-256`())
+
+        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(),
+            "NaCl".encodeToByteArray(),
+        )
+        assertContentEquals(expected, actual)
+    }
+}