#!/bin/bash

function unarchive_all() {
  for f in *.zip
  do
    unzip $f -d "$(echo $f | cut -d . -f 1)"
    rm $f
  done

  for f in *.rar
  do
    mkdir "$(echo $f | cut -d . -f 1)"
    unrar e $f "$(echo $f | cut -d . -f 1)"
    rm $f
  done
}

function check_solutions() {
  for dir in *
  do
    echo "----------------------------------------------------------------------"
    echo "------------------------- $dir ---------------------------------------"
    key2=$(find $dir -type f -name "key2.bin.enc")
    message=$(find $dir -type f -name "message_2.enc")
    public=$(find $dir -type f -name "public.pem")
    sign=$(find $dir -type f -name "message_2.sign.sha256")
    instruction=$(find $dir -type f -name "instruction.txt")
    instructions=$(find $dir -type f -name "instructions.txt")

    echo "********"
    echo $key2
    echo $message
    echo $public
    echo $sign
    echo $instruction $instructions
    echo "********"

    openssl rsautl -decrypt -inkey ../alice.pem -in "$key2" -out "$key2.dec"
    openssl des-ecb -d -in "$message" -out "$message.dec" -pass "file:$key2.dec"
    openssl dgst -sha256 -verify "$public" -signature "$sign" "$message.dec" > "$sign.check"

    echo "......................................................................"
    echo "## KEY:"
    cat "$key2.dec"
    echo

    echo "## MESSAGE:"
    cat "$message.dec"
    echo

    echo "## SIGNATURE:"
    cat "$sign.check"
    echo

    echo "## PUBLIC KEY:"
    cat "$instruction" | grep "pkcs12"
    cat "$instructions" | grep "pkcs12"

    echo

  done
}

openssl rsa -in alice_private.pem -out alice.pem
pushd $1
unarchive_all
check_solutions