initial commit

.gitignore

@@ -0,0 +1,10 @@
+# IDE
+/.idea/
+
+# Gradle
+/.gradle/
+/gradle.properties
+
+# Kotlin
+/.kotlin/
+/build/

LICENSE

@@ -0,0 +1,165 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
+   function or data, the facility still operates, and performs
+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the object code with a copy of the GNU GPL and this license
+   document.
+
+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+   a) Give prominent notice with each copy of the Combined Work that
+   the Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
+   document.
+
+   c) For a Combined Work that displays copyright notices during
+   execution, include the copyright notice for the Library among
+   these notices, as well as a reference directing the user to the
+   copies of the GNU GPL and this license document.
+
+   d) Do one of the following:
+
+       0) Convey the Minimal Corresponding Source under the terms of this
+       License, and the Corresponding Application Code in a form
+       suitable for, and under terms that permit, the user to
+       recombine or relink the Application with a modified version of
+       the Linked Version to produce a modified Combined Work, in the
+       manner specified by section 6 of the GNU GPL for conveying
+       Corresponding Source.
+
+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
+       a copy of the Library already present on the user's computer
+       system, and (b) will operate properly with a modified version
+       of the Library that is interface-compatible with the Linked
+       Version.
+
+   e) Provide Installation Information, but only if you would otherwise
+   be required to provide such information under section 6 of the
+   GNU GPL, and only to the extent that such information is
+   necessary to install and execute a modified version of the
+   Combined Work produced by recombining or relinking the
+   Application with a modified version of the Linked Version. (If
+   you use option 4d0, the Installation Information must accompany
+   the Minimal Corresponding Source and Corresponding Application
+   Code. If you use option 4d1, you must provide the Installation
+   Information in the manner specified by section 6 of the GNU GPL
+   for conveying Corresponding Source.)
+
+  5. Combined Libraries.
+
+  You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
+   conveyed under the terms of this License.
+
+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+  Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
+  If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.

build.gradle.kts

@@ -0,0 +1,48 @@
+group = "com.infendro"
+version = "1.1.0"
+
+repositories {
+    mavenCentral()
+}
+
+plugins {
+    alias(libs.plugins.multiplatform)
+    id("maven-publish")
+}
+
+kotlin {
+    jvm()
+    js {
+        nodejs()
+    }
+    linuxX64()
+}
+
+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
+}

gradle/libs.versions.toml

@@ -0,0 +1,5 @@
+[versions]
+kotlin = "2.1.20"
+
+[plugins]
+multiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref = "kotlin" }

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#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
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,234 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       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
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "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.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+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.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="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
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle.kts

@@ -0,0 +1 @@
+rootProject.name = "hash"

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

@@ -0,0 +1,7 @@
+package com.infendro.hash
+
+sealed class HashFunction {
+    abstract fun hash(
+        value: ByteArray,
+    ): ByteArray
+}

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

@@ -0,0 +1,109 @@
+package com.infendro.hash
+
+import com.infendro.hash.util.ByteOrder.LITTLE_ENDIAN
+import com.infendro.hash.util.addAll
+import com.infendro.hash.util.toByteArray
+import com.infendro.hash.util.toUIntArray
+
+object MD5 : HashFunction() {
+    private val s = arrayOf(
+        7, 12, 17, 22,
+        7, 12, 17, 22,
+        7, 12, 17, 22,
+        7, 12, 17, 22,
+        5, 9, 14, 20,
+        5, 9, 14, 20,
+        5, 9, 14, 20,
+        5, 9, 14, 20,
+        4, 11, 16, 23,
+        4, 11, 16, 23,
+        4, 11, 16, 23,
+        4, 11, 16, 23,
+        6, 10, 15, 21,
+        6, 10, 15, 21,
+        6, 10, 15, 21,
+        6, 10, 15, 21,
+    )
+
+    private val k = arrayOf(
+        0xd76aa478U, 0xe8c7b756U, 0x242070dbU, 0xc1bdceeeU,
+        0xf57c0fafU, 0x4787c62aU, 0xa8304613U, 0xfd469501U,
+        0x698098d8U, 0x8b44f7afU, 0xffff5bb1U, 0x895cd7beU,
+        0x6b901122U, 0xfd987193U, 0xa679438eU, 0x49b40821U,
+        0xf61e2562U, 0xc040b340U, 0x265e5a51U, 0xe9b6c7aaU,
+        0xd62f105dU, 0x02441453U, 0xd8a1e681U, 0xe7d3fbc8U,
+        0x21e1cde6U, 0xc33707d6U, 0xf4d50d87U, 0x455a14edU,
+        0xa9e3e905U, 0xfcefa3f8U, 0x676f02d9U, 0x8d2a4c8aU,
+        0xfffa3942U, 0x8771f681U, 0x6d9d6122U, 0xfde5380cU,
+        0xa4beea44U, 0x4bdecfa9U, 0xf6bb4b60U, 0xbebfbc70U,
+        0x289b7ec6U, 0xeaa127faU, 0xd4ef3085U, 0x04881d05U,
+        0xd9d4d039U, 0xe6db99e5U, 0x1fa27cf8U, 0xc4ac5665U,
+        0xf4292244U, 0x432aff97U, 0xab9423a7U, 0xfc93a039U,
+        0x655b59c3U, 0x8f0ccc92U, 0xffeff47dU, 0x85845dd1U,
+        0x6fa87e4fU, 0xfe2ce6e0U, 0xa3014314U, 0x4e0811a1U,
+        0xf7537e82U, 0xbd3af235U, 0x2ad7d2bbU, 0xeb86d391U,
+    )
+
+    override fun hash(
+        value: ByteArray,
+    ): ByteArray {
+        var a0 = 0x67452301U
+        var b0 = 0xefcdab89U
+        var c0 = 0x98badcfeU
+        var d0 = 0x10325476U
+        val ml = value.size.toULong() * 8UL
+
+        val paddedValue = buildList {
+            addAll(value)
+            add(0x80.toByte())
+            while (size % 64 != 56) {
+                add(0x00.toByte())
+            }
+            addAll(ml.toByteArray(LITTLE_ENDIAN))
+        }
+
+        val chunks = paddedValue
+            .chunked(64)
+        for (chunk in chunks) {
+            val w = buildList {
+                addAll(chunk.toUIntArray(LITTLE_ENDIAN))
+            }
+
+            var a = a0
+            var b = b0
+            var c = c0
+            var d = d0
+
+            for (i in 0..<64) {
+                val f = when (i) {
+                    in 0..15 -> (b and c) or (b.inv() and d)
+                    in 16..31 -> (d and b) or (d.inv() and c)
+                    in 32..47 -> b xor c xor d
+                    else -> c xor (b or d.inv())
+                }
+                val g = when (i) {
+                    in 0..15 -> i
+                    in 16..31 -> (5 * i + 1) % 16
+                    in 32..47 -> (3 * i + 5) % 16
+                    else -> (7 * i) % 16
+                }
+                a = d
+                d = c
+                c = b
+                b += (f + a + k[i] + w[g]).rotateLeft(s[i])
+            }
+
+            a0 += a
+            b0 += b
+            c0 += c
+            d0 += d
+        }
+
+        return byteArrayOf(
+            *a0.toByteArray(LITTLE_ENDIAN),
+            *b0.toByteArray(LITTLE_ENDIAN),
+            *c0.toByteArray(LITTLE_ENDIAN),
+            *d0.toByteArray(LITTLE_ENDIAN),
+        )
+    }
+}

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

@@ -0,0 +1,80 @@
+package com.infendro.hash
+
+import com.infendro.hash.util.addAll
+import com.infendro.hash.util.toByteArray
+import com.infendro.hash.util.toUIntArray
+
+object SHA1 : HashFunction() {
+    override fun hash(
+        value: ByteArray,
+    ): ByteArray {
+        var h0 = 0x67452301U
+        var h1 = 0xefcdaB89U
+        var h2 = 0x98badcfeU
+        var h3 = 0x10325476U
+        var h4 = 0xc3d2e1f0U
+        val ml = value.size.toULong() * 8UL
+
+        val paddedValue = buildList {
+            addAll(value)
+            add(0x80.toByte())
+            while (size % 64 != 56) {
+                add(0x00.toByte())
+            }
+            addAll(ml.toByteArray())
+        }
+
+        val chunks = paddedValue
+            .chunked(64)
+        for (chunk in chunks) {
+            val w = buildList {
+                addAll(chunk.toUIntArray())
+                for (i in 16..<80) {
+                    val word = (get(i - 3) xor get(i - 8) xor get(i - 14) xor get(i - 16)).rotateLeft(1)
+                    add(word)
+                }
+            }
+
+            var a = h0
+            var b = h1
+            var c = h2
+            var d = h3
+            var e = h4
+
+            for (i in 0..<80) {
+                val f = when (i) {
+                    in 0..<20 -> (b and c) or (b.inv() and d)
+                    in 20..<40 -> b xor c xor d
+                    in 40..<60 -> (b and c) or (b and d) or (c and d)
+                    else -> b xor c xor d
+                }
+                val k = when (i) {
+                    in 0..<20 -> 0x5a827999U
+                    in 20..<40 -> 0x6ed9eba1U
+                    in 40..<60 -> 0x8f1bbcdcU
+                    else -> 0xca62c1d6U
+                }
+                val temp = a.rotateLeft(5) + f + e + k + w[i]
+                e = d
+                d = c
+                c = b.rotateLeft(30)
+                b = a
+                a = temp
+            }
+
+            h0 += a
+            h1 += b
+            h2 += c
+            h3 += d
+            h4 += e
+        }
+
+        return byteArrayOf(
+            *h0.toByteArray(),
+            *h1.toByteArray(),
+            *h2.toByteArray(),
+            *h3.toByteArray(),
+            *h4.toByteArray(),
+        )
+    }
+}

src/commonMain/kotlin/com/infendro/hash/SHA224.kt

@@ -0,0 +1,100 @@
+package com.infendro.hash
+
+import com.infendro.hash.util.addAll
+import com.infendro.hash.util.toByteArray
+import com.infendro.hash.util.toUIntArray
+
+object SHA224 : HashFunction() {
+    private val k = arrayOf(
+        0x428a2f98U, 0x71374491U, 0xb5c0fbcfU, 0xe9b5dba5U, 0x3956c25bU, 0x59f111f1U, 0x923f82a4U, 0xab1c5ed5U,
+        0xd807aa98U, 0x12835b01U, 0x243185beU, 0x550c7dc3U, 0x72be5d74U, 0x80deb1feU, 0x9bdc06a7U, 0xc19bf174U,
+        0xe49b69c1U, 0xefbe4786U, 0x0fc19dc6U, 0x240ca1ccU, 0x2de92c6fU, 0x4a7484aaU, 0x5cb0a9dcU, 0x76f988daU,
+        0x983e5152U, 0xa831c66dU, 0xb00327c8U, 0xbf597fc7U, 0xc6e00bf3U, 0xd5a79147U, 0x06ca6351U, 0x14292967U,
+        0x27b70a85U, 0x2e1b2138U, 0x4d2c6dfcU, 0x53380d13U, 0x650a7354U, 0x766a0abbU, 0x81c2c92eU, 0x92722c85U,
+        0xa2bfe8a1U, 0xa81a664bU, 0xc24b8b70U, 0xc76c51a3U, 0xd192e819U, 0xd6990624U, 0xf40e3585U, 0x106aa070U,
+        0x19a4c116U, 0x1e376c08U, 0x2748774cU, 0x34b0bcb5U, 0x391c0cb3U, 0x4ed8aa4aU, 0x5b9cca4fU, 0x682e6ff3U,
+        0x748f82eeU, 0x78a5636fU, 0x84c87814U, 0x8cc70208U, 0x90befffaU, 0xa4506cebU, 0xbef9a3f7U, 0xc67178f2U,
+    )
+
+    override fun hash(
+        value: ByteArray,
+    ): ByteArray {
+        var h0 = 0xc1059ed8U
+        var h1 = 0x367cd507U
+        var h2 = 0x3070dd17U
+        var h3 = 0xf70e5939U
+        var h4 = 0xffc00b31U
+        var h5 = 0x68581511U
+        var h6 = 0x64f98fa7U
+        var h7 = 0xbefa4fa4U
+        val ml = value.size.toULong() * 8UL
+
+        val paddedValue = buildList {
+            addAll(value)
+            add(0x80.toByte())
+            while (size % 64 != 56) {
+                add(0x00.toByte())
+            }
+            addAll(ml.toByteArray())
+        }
+
+        val chunks = paddedValue
+            .chunked(64)
+        for (chunk in chunks) {
+            val w = buildList {
+                addAll(chunk.toUIntArray())
+                for (i in 16..<64) {
+                    val s0 = get(i - 15).rotateRight(7) xor get(i - 15).rotateRight(18) xor (get(i - 15) shr 3)
+                    val s1 = get(i - 2).rotateRight(17) xor get(i - 2).rotateRight(19) xor (get(i - 2) shr 10)
+                    add(get(i - 16) + s0 + get(i - 7) + s1)
+                }
+            }
+
+            var a = h0
+            var b = h1
+            var c = h2
+            var d = h3
+            var e = h4
+            var f = h5
+            var g = h6
+            var h = h7
+
+            for (i in 0..<64) {
+                val s1 = e.rotateRight(6) xor e.rotateRight(11) xor e.rotateRight(25)
+                val ch = (e and f) xor (e.inv() and g)
+                val temp1 = h + s1 + ch + k[i] + w[i]
+                val s0 = a.rotateRight(2) xor a.rotateRight(13) xor a.rotateRight(22)
+                val maj = (a and b) xor (a and c) xor (b and c)
+                val temp2 = s0 + maj
+
+                h = g
+                g = f
+                f = e
+                e = d + temp1
+                d = c
+                c = b
+                b = a
+                a = temp1 + temp2
+            }
+
+            h0 += a
+            h1 += b
+            h2 += c
+            h3 += d
+            h4 += e
+            h5 += f
+            h6 += g
+            h7 += h
+        }
+
+        return byteArrayOf(
+            *h0.toByteArray(),
+            *h1.toByteArray(),
+            *h2.toByteArray(),
+            *h3.toByteArray(),
+            *h4.toByteArray(),
+            *h5.toByteArray(),
+            *h6.toByteArray(),
+        )
+    }
+}

src/commonMain/kotlin/com/infendro/hash/SHA256.kt

@@ -0,0 +1,101 @@
+package com.infendro.hash
+
+import com.infendro.hash.util.addAll
+import com.infendro.hash.util.toByteArray
+import com.infendro.hash.util.toUIntArray
+
+object SHA256 : HashFunction() {
+    private val k = arrayOf(
+        0x428a2f98U, 0x71374491U, 0xb5c0fbcfU, 0xe9b5dba5U, 0x3956c25bU, 0x59f111f1U, 0x923f82a4U, 0xab1c5ed5U,
+        0xd807aa98U, 0x12835b01U, 0x243185beU, 0x550c7dc3U, 0x72be5d74U, 0x80deb1feU, 0x9bdc06a7U, 0xc19bf174U,
+        0xe49b69c1U, 0xefbe4786U, 0x0fc19dc6U, 0x240ca1ccU, 0x2de92c6fU, 0x4a7484aaU, 0x5cb0a9dcU, 0x76f988daU,
+        0x983e5152U, 0xa831c66dU, 0xb00327c8U, 0xbf597fc7U, 0xc6e00bf3U, 0xd5a79147U, 0x06ca6351U, 0x14292967U,
+        0x27b70a85U, 0x2e1b2138U, 0x4d2c6dfcU, 0x53380d13U, 0x650a7354U, 0x766a0abbU, 0x81c2c92eU, 0x92722c85U,
+        0xa2bfe8a1U, 0xa81a664bU, 0xc24b8b70U, 0xc76c51a3U, 0xd192e819U, 0xd6990624U, 0xf40e3585U, 0x106aa070U,
+        0x19a4c116U, 0x1e376c08U, 0x2748774cU, 0x34b0bcb5U, 0x391c0cb3U, 0x4ed8aa4aU, 0x5b9cca4fU, 0x682e6ff3U,
+        0x748f82eeU, 0x78a5636fU, 0x84c87814U, 0x8cc70208U, 0x90befffaU, 0xa4506cebU, 0xbef9a3f7U, 0xc67178f2U,
+    )
+
+    override fun hash(
+        value: ByteArray,
+    ): ByteArray {
+        var h0 = 0x6a09e667U
+        var h1 = 0xbb67ae85U
+        var h2 = 0x3c6ef372U
+        var h3 = 0xa54ff53aU
+        var h4 = 0x510e527fU
+        var h5 = 0x9b05688cU
+        var h6 = 0x1f83d9abU
+        var h7 = 0x5be0cd19U
+        val ml = value.size.toULong() * 8UL
+
+        val paddedValue = buildList {
+            addAll(value)
+            add(0x80.toByte())
+            while (size % 64 != 56) {
+                add(0x00.toByte())
+            }
+            addAll(ml.toByteArray())
+        }
+
+        val chunks = paddedValue
+            .chunked(64)
+        for (chunk in chunks) {
+            val w = buildList {
+                addAll(chunk.toUIntArray())
+                for (i in 16..<64) {
+                    val s0 = get(i - 15).rotateRight(7) xor get(i - 15).rotateRight(18) xor (get(i - 15) shr 3)
+                    val s1 = get(i - 2).rotateRight(17) xor get(i - 2).rotateRight(19) xor (get(i - 2) shr 10)
+                    add(get(i - 16) + s0 + get(i - 7) + s1)
+                }
+            }
+
+            var a = h0
+            var b = h1
+            var c = h2
+            var d = h3
+            var e = h4
+            var f = h5
+            var g = h6
+            var h = h7
+
+            for (i in 0..<64) {
+                val s0 = a.rotateRight(2) xor a.rotateRight(13) xor a.rotateRight(22)
+                val s1 = e.rotateRight(6) xor e.rotateRight(11) xor e.rotateRight(25)
+                val ch = (e and f) xor (e.inv() and g)
+                val temp1 = h + s1 + ch + k[i] + w[i]
+                val maj = (a and b) xor (a and c) xor (b and c)
+                val temp2 = s0 + maj
+
+                h = g
+                g = f
+                f = e
+                e = d + temp1
+                d = c
+                c = b
+                b = a
+                a = temp1 + temp2
+            }
+
+            h0 += a
+            h1 += b
+            h2 += c
+            h3 += d
+            h4 += e
+            h5 += f
+            h6 += g
+            h7 += h
+        }
+
+        return byteArrayOf(
+            *h0.toByteArray(),
+            *h1.toByteArray(),
+            *h2.toByteArray(),
+            *h3.toByteArray(),
+            *h4.toByteArray(),
+            *h5.toByteArray(),
+            *h6.toByteArray(),
+            *h7.toByteArray(),
+        )
+    }
+}

src/commonMain/kotlin/com/infendro/hash/SHA384.kt

@@ -0,0 +1,107 @@
+package com.infendro.hash
+
+import com.infendro.hash.util.addAll
+import com.infendro.hash.util.toByteArray
+import com.infendro.hash.util.toULongArray
+
+object SHA384 : HashFunction() {
+    private val k = arrayOf(
+        0x428a2f98d728ae22UL, 0x7137449123ef65cdUL, 0xb5c0fbcfec4d3b2fUL, 0xe9b5dba58189dbbcUL, 0x3956c25bf348b538UL,
+        0x59f111f1b605d019UL, 0x923f82a4af194f9bUL, 0xab1c5ed5da6d8118UL, 0xd807aa98a3030242UL, 0x12835b0145706fbeUL,
+        0x243185be4ee4b28cUL, 0x550c7dc3d5ffb4e2UL, 0x72be5d74f27b896fUL, 0x80deb1fe3b1696b1UL, 0x9bdc06a725c71235UL,
+        0xc19bf174cf692694UL, 0xe49b69c19ef14ad2UL, 0xefbe4786384f25e3UL, 0x0fc19dc68b8cd5b5UL, 0x240ca1cc77ac9c65UL,
+        0x2de92c6f592b0275UL, 0x4a7484aa6ea6e483UL, 0x5cb0a9dcbd41fbd4UL, 0x76f988da831153b5UL, 0x983e5152ee66dfabUL,
+        0xa831c66d2db43210UL, 0xb00327c898fb213fUL, 0xbf597fc7beef0ee4UL, 0xc6e00bf33da88fc2UL, 0xd5a79147930aa725UL,
+        0x06ca6351e003826fUL, 0x142929670a0e6e70UL, 0x27b70a8546d22ffcUL, 0x2e1b21385c26c926UL, 0x4d2c6dfc5ac42aedUL,
+        0x53380d139d95b3dfUL, 0x650a73548baf63deUL, 0x766a0abb3c77b2a8UL, 0x81c2c92e47edaee6UL, 0x92722c851482353bUL,
+        0xa2bfe8a14cf10364UL, 0xa81a664bbc423001UL, 0xc24b8b70d0f89791UL, 0xc76c51a30654be30UL, 0xd192e819d6ef5218UL,
+        0xd69906245565a910UL, 0xf40e35855771202aUL, 0x106aa07032bbd1b8UL, 0x19a4c116b8d2d0c8UL, 0x1e376c085141ab53UL,
+        0x2748774cdf8eeb99UL, 0x34b0bcb5e19b48a8UL, 0x391c0cb3c5c95a63UL, 0x4ed8aa4ae3418acbUL, 0x5b9cca4f7763e373UL,
+        0x682e6ff3d6b2b8a3UL, 0x748f82ee5defb2fcUL, 0x78a5636f43172f60UL, 0x84c87814a1f0ab72UL, 0x8cc702081a6439ecUL,
+        0x90befffa23631e28UL, 0xa4506cebde82bde9UL, 0xbef9a3f7b2c67915UL, 0xc67178f2e372532bUL, 0xca273eceea26619cUL,
+        0xd186b8c721c0c207UL, 0xeada7dd6cde0eb1eUL, 0xf57d4f7fee6ed178UL, 0x06f067aa72176fbaUL, 0x0a637dc5a2c898a6UL,
+        0x113f9804bef90daeUL, 0x1b710b35131c471bUL, 0x28db77f523047d84UL, 0x32caab7b40c72493UL, 0x3c9ebe0a15c9bebcUL,
+        0x431d67c49c100d4cUL, 0x4cc5d4becb3e42b6UL, 0x597f299cfc657e2aUL, 0x5fcb6fab3ad6faecUL, 0x6c44198c4a475817UL,
+    )
+
+    override fun hash(
+        value: ByteArray,
+    ): ByteArray {
+        var h0 = 0xcbbb9d5dc1059ed8UL
+        var h1 = 0x629a292a367cd507UL
+        var h2 = 0x9159015a3070dd17UL
+        var h3 = 0x152fecd8f70e5939UL
+        var h4 = 0x67332667ffc00b31UL
+        var h5 = 0x8eb44a8768581511UL
+        var h6 = 0xdb0c2e0d64f98fa7UL
+        var h7 = 0x47b5481dbefa4fa4UL
+        val ml = value.size.toULong() * 8UL
+
+        val paddedValue = buildList {
+            addAll(value)
+            add(0x80.toByte())
+            while (size % 128 != 120) {
+                add(0x00.toByte())
+            }
+            addAll(ml.toByteArray())
+        }
+
+        val chunks = paddedValue
+            .chunked(128)
+        for (chunk in chunks) {
+            val w = buildList {
+                addAll(chunk.toULongArray())
+                for (i in 16..<80) {
+                    val s0 = get(i - 15).rotateRight(1) xor get(i - 15).rotateRight(8) xor (get(i - 15) shr 7)
+                    val s1 = get(i - 2).rotateRight(19) xor get(i - 2).rotateRight(61) xor (get(i - 2) shr 6)
+                    add(get(i - 16) + s0 + get(i - 7) + s1)
+                }
+            }
+
+            var a = h0
+            var b = h1
+            var c = h2
+            var d = h3
+            var e = h4
+            var f = h5
+            var g = h6
+            var h = h7
+
+            for (i in 0..<80) {
+                val s0 = a.rotateRight(28) xor a.rotateRight(34) xor a.rotateRight(39)
+                val s1 = e.rotateRight(14) xor e.rotateRight(18) xor e.rotateRight(41)
+                val ch = (e and f) xor (e.inv() and g)
+                val temp1 = h + s1 + ch + k[i] + w[i]
+                val maj = (a and b) xor (a and c) xor (b and c)
+                val temp2 = s0 + maj
+
+                h = g
+                g = f
+                f = e
+                e = d + temp1
+                d = c
+                c = b
+                b = a
+                a = temp1 + temp2
+            }
+
+            h0 += a
+            h1 += b
+            h2 += c
+            h3 += d
+            h4 += e
+            h5 += f
+            h6 += g
+            h7 += h
+        }
+
+        return byteArrayOf(
+            *h0.toByteArray(),
+            *h1.toByteArray(),
+            *h2.toByteArray(),
+            *h3.toByteArray(),
+            *h4.toByteArray(),
+            *h5.toByteArray(),
+        )
+    }
+}

src/commonMain/kotlin/com/infendro/hash/SHA512.kt

@@ -0,0 +1,109 @@
+package com.infendro.hash
+
+import com.infendro.hash.util.addAll
+import com.infendro.hash.util.toByteArray
+import com.infendro.hash.util.toULongArray
+
+object SHA512 : HashFunction() {
+    private val k = arrayOf(
+        0x428a2f98d728ae22UL, 0x7137449123ef65cdUL, 0xb5c0fbcfec4d3b2fUL, 0xe9b5dba58189dbbcUL, 0x3956c25bf348b538UL,
+        0x59f111f1b605d019UL, 0x923f82a4af194f9bUL, 0xab1c5ed5da6d8118UL, 0xd807aa98a3030242UL, 0x12835b0145706fbeUL,
+        0x243185be4ee4b28cUL, 0x550c7dc3d5ffb4e2UL, 0x72be5d74f27b896fUL, 0x80deb1fe3b1696b1UL, 0x9bdc06a725c71235UL,
+        0xc19bf174cf692694UL, 0xe49b69c19ef14ad2UL, 0xefbe4786384f25e3UL, 0x0fc19dc68b8cd5b5UL, 0x240ca1cc77ac9c65UL,
+        0x2de92c6f592b0275UL, 0x4a7484aa6ea6e483UL, 0x5cb0a9dcbd41fbd4UL, 0x76f988da831153b5UL, 0x983e5152ee66dfabUL,
+        0xa831c66d2db43210UL, 0xb00327c898fb213fUL, 0xbf597fc7beef0ee4UL, 0xc6e00bf33da88fc2UL, 0xd5a79147930aa725UL,
+        0x06ca6351e003826fUL, 0x142929670a0e6e70UL, 0x27b70a8546d22ffcUL, 0x2e1b21385c26c926UL, 0x4d2c6dfc5ac42aedUL,
+        0x53380d139d95b3dfUL, 0x650a73548baf63deUL, 0x766a0abb3c77b2a8UL, 0x81c2c92e47edaee6UL, 0x92722c851482353bUL,
+        0xa2bfe8a14cf10364UL, 0xa81a664bbc423001UL, 0xc24b8b70d0f89791UL, 0xc76c51a30654be30UL, 0xd192e819d6ef5218UL,
+        0xd69906245565a910UL, 0xf40e35855771202aUL, 0x106aa07032bbd1b8UL, 0x19a4c116b8d2d0c8UL, 0x1e376c085141ab53UL,
+        0x2748774cdf8eeb99UL, 0x34b0bcb5e19b48a8UL, 0x391c0cb3c5c95a63UL, 0x4ed8aa4ae3418acbUL, 0x5b9cca4f7763e373UL,
+        0x682e6ff3d6b2b8a3UL, 0x748f82ee5defb2fcUL, 0x78a5636f43172f60UL, 0x84c87814a1f0ab72UL, 0x8cc702081a6439ecUL,
+        0x90befffa23631e28UL, 0xa4506cebde82bde9UL, 0xbef9a3f7b2c67915UL, 0xc67178f2e372532bUL, 0xca273eceea26619cUL,
+        0xd186b8c721c0c207UL, 0xeada7dd6cde0eb1eUL, 0xf57d4f7fee6ed178UL, 0x06f067aa72176fbaUL, 0x0a637dc5a2c898a6UL,
+        0x113f9804bef90daeUL, 0x1b710b35131c471bUL, 0x28db77f523047d84UL, 0x32caab7b40c72493UL, 0x3c9ebe0a15c9bebcUL,
+        0x431d67c49c100d4cUL, 0x4cc5d4becb3e42b6UL, 0x597f299cfc657e2aUL, 0x5fcb6fab3ad6faecUL, 0x6c44198c4a475817UL,
+    )
+
+    override fun hash(
+        value: ByteArray,
+    ): ByteArray {
+        var h0 = 0x6a09e667f3bcc908UL
+        var h1 = 0xbb67ae8584caa73bUL
+        var h2 = 0x3c6ef372fe94f82bUL
+        var h3 = 0xa54ff53a5f1d36f1UL
+        var h4 = 0x510e527fade682d1UL
+        var h5 = 0x9b05688c2b3e6c1fUL
+        var h6 = 0x1f83d9abfb41bd6bUL
+        var h7 = 0x5be0cd19137e2179UL
+        val ml = value.size.toULong() * 8UL
+
+        val paddedValue = buildList {
+            addAll(value)
+            add(0x80.toByte())
+            while (size % 128 != 120) {
+                add(0x00.toByte())
+            }
+            addAll(ml.toByteArray())
+        }
+
+        val chunks = paddedValue
+            .chunked(128)
+        for (chunk in chunks) {
+            val w = buildList {
+                addAll(chunk.toULongArray())
+                for (i in 16..<80) {
+                    val s0 = get(i - 15).rotateRight(1) xor get(i - 15).rotateRight(8) xor (get(i - 15) shr 7)
+                    val s1 = get(i - 2).rotateRight(19) xor get(i - 2).rotateRight(61) xor (get(i - 2) shr 6)
+                    add(get(i - 16) + s0 + get(i - 7) + s1)
+                }
+            }
+
+            var a = h0
+            var b = h1
+            var c = h2
+            var d = h3
+            var e = h4
+            var f = h5
+            var g = h6
+            var h = h7
+
+            for (i in 0..<80) {
+                val s0 = a.rotateRight(28) xor a.rotateRight(34) xor a.rotateRight(39)
+                val s1 = e.rotateRight(14) xor e.rotateRight(18) xor e.rotateRight(41)
+                val ch = (e and f) xor (e.inv() and g)
+                val temp1 = h + s1 + ch + k[i] + w[i]
+                val maj = (a and b) xor (a and c) xor (b and c)
+                val temp2 = s0 + maj
+
+                h = g
+                g = f
+                f = e
+                e = d + temp1
+                d = c
+                c = b
+                b = a
+                a = temp1 + temp2
+            }
+
+            h0 += a
+            h1 += b
+            h2 += c
+            h3 += d
+            h4 += e
+            h5 += f
+            h6 += g
+            h7 += h
+        }
+
+        return byteArrayOf(
+            *h0.toByteArray(),
+            *h1.toByteArray(),
+            *h2.toByteArray(),
+            *h3.toByteArray(),
+            *h4.toByteArray(),
+            *h5.toByteArray(),
+            *h6.toByteArray(),
+            *h7.toByteArray(),
+        )
+    }
+}

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

@@ -0,0 +1,119 @@
+package com.infendro.hash.util
+
+import com.infendro.hash.util.ByteOrder.BIG_ENDIAN
+import com.infendro.hash.util.ByteOrder.LITTLE_ENDIAN
+
+internal fun MutableCollection<Byte>.addAll(
+    bytes: ByteArray,
+) {
+    addAll(bytes.toList())
+}
+
+enum class ByteOrder {
+    BIG_ENDIAN,
+    LITTLE_ENDIAN,
+}
+
+internal fun UInt.toByteArray(
+    order: ByteOrder = BIG_ENDIAN,
+): ByteArray {
+    val bytes = ByteArray(4) { i ->
+        val offset = (3 - i) * 8
+        (this shr offset).toByte()
+    }
+
+    return when (order) {
+        BIG_ENDIAN -> bytes
+        LITTLE_ENDIAN -> bytes.reversedArray()
+    }
+}
+
+internal fun ULong.toByteArray(
+    order: ByteOrder = BIG_ENDIAN,
+): ByteArray {
+    val bytes = ByteArray(8) { i ->
+        val offset = (7 - i) * 8
+        (this shr offset).toByte()
+    }
+
+    return when (order) {
+        BIG_ENDIAN -> bytes
+        LITTLE_ENDIAN -> bytes.reversedArray()
+    }
+}
+
+internal fun ByteArray.toUInt(
+    order: ByteOrder = BIG_ENDIAN,
+): UInt {
+    if (size != 4) throw Exception()
+
+    val bytes = when (order) {
+        BIG_ENDIAN -> this
+        LITTLE_ENDIAN -> this.reversedArray()
+    }
+
+    return bytes.fold(0U) { acc, byte ->
+        (acc shl 8) or (byte.toUInt() and 0xFFU)
+    }
+}
+
+internal fun Collection<Byte>.toUInt(
+    order: ByteOrder = BIG_ENDIAN,
+): UInt {
+    return toByteArray().toUInt(order)
+}
+
+internal fun ByteArray.toULong(
+    order: ByteOrder = BIG_ENDIAN,
+): ULong {
+    if (size != 8) throw Exception()
+
+    val bytes = when (order) {
+        BIG_ENDIAN -> this
+        LITTLE_ENDIAN -> this.reversedArray()
+    }
+
+    return bytes.fold(0UL) { acc, byte ->
+        (acc shl 8) or (byte.toULong() and 0xFFUL)
+    }
+}
+
+internal fun Collection<Byte>.toULong(
+    order: ByteOrder = BIG_ENDIAN,
+): ULong {
+    return toByteArray().toULong(order)
+}
+
+internal fun ByteArray.toUIntArray(
+    order: ByteOrder = BIG_ENDIAN,
+): UIntArray {
+    if (size % 4 != 0) throw Exception()
+
+    return toList()
+        .chunked(4)
+        .map { it.toUInt(order) }
+        .toUIntArray()
+}
+
+internal fun Collection<Byte>.toUIntArray(
+    order: ByteOrder = BIG_ENDIAN,
+): UIntArray {
+    return toByteArray().toUIntArray(order)
+}
+
+internal fun ByteArray.toULongArray(
+    order: ByteOrder = BIG_ENDIAN,
+): ULongArray {
+    if (size % 8 != 0) throw Exception()
+
+    return toList()
+        .chunked(8)
+        .map { it.toULong(order) }
+        .toULongArray()
+}
+
+internal fun Collection<Byte>.toULongArray(
+    order: ByteOrder = BIG_ENDIAN,
+): ULongArray {
+    return toByteArray().toULongArray(order)
+}