Initial commit

.gitignore

+### JetBrains template
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/artifacts
+# .idea/compiler.xml
+# .idea/jarRepositories.xml
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+
+### Example user template template
+### Example user template
+
+# IntelliJ project files
+.idea
+*.iml
+out
+gen
+### Gradle template
+.gradle
+**/build/
+!src/**/build/
+
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
+!gradle-wrapper.jar
+
+# Cache of project
+.gradletasknamecache
+
+# # Work around https://youtrack.jetbrains.com/issue/IDEA-116898
+# gradle/wrapper/gradle-wrapper.properties
+
+### Kotlin template
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+

LabProfile-v1.1.crypt

+\%&S%!m㉂{3ư!tA>:0Z!a9=&gtձY`#$NAnRa1틿2`p0j$ί||c@ٶiROa8 &VCUk4U9dĈO7"_+47~XGU
@zh\^cWEo2B<GYHꘆ=3_z3~, 
+y@:XOy2
?Zl	%zO*!E|Ҩ-[TB;o|wUTqRxm,dYї^l35$?;}T.61]<y`G~,"	8].Ohi/>s.W%YT\nFۺ{&XƦr%SG||Q_F2i(|WP`JIq;Bo^$`4MdvtW>0	"=.i"&tKa!DA.K(fVy	79>.;oe[RBC`C}	URf_RYƈu	f0gn5jl-wSi}p
+*1q6VPT6HFI7%
T+Pϼ LK1c10A
}KsY|{z	?^؊ztV:D`Fּ͖B8r(s~!tE,ć>
+:iAn7m7aǻu"E兤S
oPPhHm@<X$9(I}/Rtn8ug#'PRCςMN>J
fqwee~j
tq!e#il+`@[r)MLC9Io5	]»Djv"Uqct K},RVWd38[)10B#:\$
'/M\|ofk\E!z~ZFr:X8G
+ñfƥ
\ No newline at end of file

build.gradle.kts

+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+plugins {
+    kotlin("jvm") version "1.6.10"
+    application
+}
+
+group = "space.rethelyi"
+version = "1.0-SNAPSHOT"
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation(kotlin("test"))
+}
+
+tasks.test {
+    useJUnitPlatform()
+}
+
+tasks.withType<KotlinCompile> {
+    kotlinOptions.jvmTarget = "1.8"
+}
+
+application {
+    mainClass.set("MainKt")
+}
\ No newline at end of file

gradle.properties

+kotlin.code.style=official

gradle/wrapper/gradle-wrapper.properties

+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or 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 UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MSYS* | MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$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" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

gradlew.bat

+@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

+
+rootProject.name = "two-square"
+

src/main/kotlin/Main.kt

+import hex.hexing
+import twosquare.decrypted
+import twosquare.encrypted
+import twosquare.spacer
+
+fun main(args: Array<String>) {
+
+    spacer(encrypted)
+    spacer(decrypted)
+
+    hexing()
+}

src/main/kotlin/hex/hex.kt

+package hex
+
+import java.io.File
+
+fun hexing() {
+    val v1 = File("/home/blint/projects/bme-vi/itsec/two-square/LabProfile-v1.crypt")
+        .readBytes()
+        .asUnsigned()
+        .toBlocks(16)
+        .drop(8)
+
+    val v1_1 = File("/home/blint/projects/bme-vi/itsec/two-square/LabProfile-v1.1.crypt")
+        .readBytes()
+        .asUnsigned()
+        .toBlocks(16)
+        .drop(8)
+
+    val xoredBlocks = v1 xor v1_1
+    val decodedBlocks = mutableListOf<List<Int>>()
+    var lastDecoded = List(16) { 0x20 }
+    var decodedString = ""
+
+    for (element in xoredBlocks) {
+        lastDecoded = element xor lastDecoded
+        decodedBlocks += lastDecoded
+        decodedString += lastDecoded.toASCII()
+    }
+
+    println(decodedString)
+
+    // print last 4 unprintable char
+    for (i in 12..15) {
+        print(lastDecoded[i].toString(16).padStart(2, '0'))
+    }
+    println()
+}
+
+fun ByteArray.asUnsigned() :List<Int> {
+    val hexList: MutableList<Int> = mutableListOf()
+    this.forEach { byte -> hexList.add(byte.toInt() and 0xFF) }
+    return hexList
+}
+
+fun List<Int>.toBlocks(blockSize: Int) : List<List<Int>> {
+    val retList = mutableListOf<List<Int>>()
+    repeat(this.size / blockSize) {
+        retList += this.subList(it * blockSize, (it + 1) * blockSize)
+    }
+    return retList
+}
+
+fun List<List<Int>>.drop(n: Int) : List<List<Int>> {
+    return this.subList(n, this.size)
+}
+
+fun List<Int>.toASCII(): String {
+    var ret = ""
+    for (i in this) {
+        ret += i.toChar()
+    }
+    return ret
+}
+
+infix fun List<Int>.xor(l : List<Int>) : List<Int> {
+    var retList = mutableListOf<Int>()
+    repeat(minOf(this.size, l.size)) {
+        retList.add(this[it] xor l[it])
+    }
+    return retList
+}
+
+@JvmName("xorInt")
+infix fun List<List<Int>>.xor(l: List<List<Int>>) : List<List<Int>> {
+    val xoredBlocks = mutableListOf<List<Int>>()
+    repeat(minOf(this.size, l.size)) {
+        xoredBlocks += this[it] xor l[it]
+    }
+    return xoredBlocks
+}
\ No newline at end of file

src/main/kotlin/twosquare/twosquare.kt

+package twosquare
+
+fun spacer(str: String) {
+    for (i in str.indices) {
+        if (i.mod(2) == 0) {
+            print(" " + str[i])
+        } else {
+            print(str[i])
+        }
+    }
+    println()
+}
+
+val encrypted = """
+        KTOUOFKERKVZFARSWFYUCEABLUBEPCNA
+        RSEPNRTANCBUWHDOWFDUZMSAXPYUOJLC
+        DIGRPUFCABVMWFBUIOBEMNWLLHMTADVR
+        ICROUVNTTBABMTVMWFBUIOYUMYKKIGMT
+        AXONTAOPZMSURUCJMTADVRICROUVNTTB
+        ABPULAVMZAXTDIGRPUJSFCZAOCSURVVS
+        GCOTHCFCPBDPYUOJOSKCLESBEKSPOLJG
+        ADOUKCLESBDIGRPUJHOSKCDFIFYUZAXT
+        VMYPCRZKGRPUJXWFISISABKARRDEZKIU
+        VUPBNSPAABNCDW
+    """.trimIndent().replace("\n","")
+
+val decrypted = """
+        ...............................C
+        IRCUMSTANCES....................
+        ................................
+        ................................
+        ................................
+        ................................
+        ................................
+        ......................CIPHERTEXT
+        INCRYPTOGRAPHY..................
+        ..............
+    """.trimIndent().replace("\n","")
\ No newline at end of file

two-square-with-spaces

+cipher: KT OU OF KE RK VZ FA RS WF YU CE AB LU BE PC NA RS EP NR TA NC BU WH DO WF DU ZM SA XP YU OJ LC DI GR PU FC AB VM WF BU IO BE MN WL LH MT AD VR IC RO UV NT TB AB MT VM WF BU IO YU MY KK IG MT AX ON TA OP ZM SU RU CJ MT AD VR IC RO UV NT TB AB PU LA VM ZA XT DI GR PU JS FC ZA OC SU RV VS GC OT HC FC PB DP YU OJ OS KC LE SB EK SP OL JG AD OU KC LE SB DI GR PU JH OS KC DF IF YU ZA XT VM YP CR ZK GR PU JX WF IS IS AB KA RR DE ZK IU VU PB NS PA AB NC DW
+plain : .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .C IR CU MS TA NC ES .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. CI PH ER TE XT IN CR YP TO GR AP HY .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
+
+