Challenge - The Crypto-Cube

Array("U","moveUp"), "2"=>Array("D","moveDown"), "3"=>Array("R","moveRight"), "4"=>Array("L","moveLeft") ) ) ; define("_direction_", 0); define("_function_", 1); define("_crypted_text_", 0); define("_crypted_sequence_", 1); define("REVERSE_MOVEMENT", Array("D"=>"moveUp", "U"=>"moveDown", "L"=>"moveRight", "R"=>"moveLeft" ) ) ; /* $str="12345678"; echo "string : $str

\n"; echo "Up : ".moveUp($str)."
\n"; echo "Down : ".moveDown($str)."
\n"; echo "Right : ".moveRight($str)."
\n"; echo "Left : ".moveLeft($str)."
\n"; echo "

"; $str="SoloLear"; echo "string : $str

\n"; echo "Up : ".moveUp($str)."
\n"; echo "Down : ".moveDown($str)."
\n"; echo "Right : ".moveRight($str)."
\n"; echo "Left : ".moveLeft($str)."
\n"; echo "

"; $strTest="SoloLear"; echo "test : $strTest

"; $strTest = moveUp($strTest); $strTest = moveUp($strTest); $strTest = moveRight($strTest); echo "test : (crypt: Up Up Right) $strTest

"; $strTest = moveLeft($strTest); $strTest = moveDown($strTest); $strTest = moveDown($strTest); echo "test : (decrypt: Left Down Down - in reverse order of crypted) $strTest

"; */ $encryptedCubeText = enCryptCube($_TEXT_VALUE); echo "

Crypted Text : ".$encryptedCubeText[0]."

\n"; echo "

Rotation Sequence : ".$encryptedCubeText[1]."

\n"; echo "

-------------------------------

"; $decryptedCubeText = deCryptCube($encryptedCubeText); echo "

Decrypted Text : $decryptedCubeText

\n"; //********************************************* function moveUp($str8){ //********************************************* $retStr = ""; $retStr .= substr($str8,2-1,1); // (0,0,0) $retStr .= substr($str8,6-1,1); // (1,0,0) $retStr .= substr($str8,7-1,1); // (1,1,0) $retStr .= substr($str8,3-1,1); // (0,1,0) $retStr .= substr($str8,1-1,1); // (0,0,1) $retStr .= substr($str8,5-1,1); // (0,1,1) $retStr .= substr($str8,8-1,1); // (1,1,1) $retStr .= substr($str8,4-1,1); // (1,0,1) return ($retStr); } //********************************************* function moveDown($str8){ //********************************************* $retStr = ""; $retStr .= substr($str8,5-1,1); // (0,0,0) $retStr .= substr($str8,1-1,1); // (1,0,0) $retStr .= substr($str8,4-1,1); // (1,1,0) $retStr .= substr($str8,8-1,1); // (0,1,0) $retStr .= substr($str8,6-1,1); // (0,0,1) $retStr .= substr($str8,2-1,1); // (0,1,1) $retStr .= substr($str8,3-1,1); // (1,1,1) $retStr .= substr($str8,7-1,1); // (1,0,1) return ($retStr); } //********************************************* function moveRight($str8){ //********************************************* $retStr = ""; $retStr .= substr($str8,5-1,1); // (0,0,0) $retStr .= substr($str8,6-1,1); // (1,0,0) $retStr .= substr($str8,2-1,1); // (1,1,0) $retStr .= substr($str8,1-1,1); // (0,1,0) $retStr .= substr($str8,8-1,1); // (0,0,1) $retStr .= substr($str8,7-1,1); // (0,1,1) $retStr .= substr($str8,3-1,1); // (1,1,1) $retStr .= substr($str8,4-1,1); // (1,0,1) return ($retStr); } //********************************************* function moveLeft($str8){ //********************************************* $retStr = ""; $retStr .= substr($str8,4-1,1); // (0,0,0) $retStr .= substr($str8,3-1,1); // (1,0,0) $retStr .= substr($str8,7-1,1); // (1,1,0) $retStr .= substr($str8,8-1,1); // (0,1,0) $retStr .= substr($str8,1-1,1); // (0,0,1) $retStr .= substr($str8,2-1,1); // (0,1,1) $retStr .= substr($str8,6-1,1); // (1,1,1) $retStr .= substr($str8,5-1,1); // (1,0,1) return ($retStr); } //********************************************* function enCryptCube($text){ //********************************************* $iSplit = 0; $rotationSequence = ""; $cryptedText = ""; echo "

Text to encrypt : $text

\n"; foreach( str_split($text, 8) as $str8){ // Split the word to encrypt in a string with 8 chars each $str8 = str_pad($str8, 8); // if len of splitted string (8 char) is minus of 8 chars, it fill and return a 8 chars strings echo "Cube N° $iSplit : (text to encrypt) $str8
\n"; $nRotation = random_int ( 1, MAX_ROTATIONS ); // Random number of rotations echo " - number rotations : $nRotation "; $directionMove = ""; $rotationSequence .= "$iSplit:"; // es.: "0:....1:....." for ($i=1; $i<=$nRotation; $i++ ){ $move = random_int ( 1, 4 ); // Random direction of rotation (1->UP, 2->DOWN, 3->RIGHT, 4->LEFT) $str8 = call_user_func ( MOVEMENT[$move][_function_], $str8 ); // Call the corresponding function for translate the vertex of cube echo "Move : ".MOVEMENT[$move][_direction_]." - [$str8] "; $directionMove .= MOVEMENT[$move][_direction_].":"; } echo "

\n"; $rotationSequence .= substr($directionMove,0,strlen($directionMove)-1).","; $cryptedText .= $str8; $iSplit++; } $rotationSequence = substr($rotationSequence,0,strlen($rotationSequence)-1); return ( Array($cryptedText, $rotationSequence) ); } //********************************************* function deCryptCube($aText){ // Array: in $aText[_crypted_text_] the cryptded text ; $aText[_crypted_sequence_] the crypted sequence //********************************************* $iSplit = 0; $decryptedText = ""; $aSequence = explode ( "," , $aText[_crypted_sequence_] ); // es.: aSequence[0]="0:D:D:D:R", aSequence[1]="1:R", ..... echo "

Text to decrypt : ".$aText[_crypted_text_]."

\n"; // es.: I ntsci' p eortogmt raiwh SoloLe ra n echo "

Rotation Sequence : ".$aText[_crypted_sequence_]."

\n"; // es.: 0:D:D:D:R,1:R,2:L:D:L:R,3:R:L,4:R foreach( str_split($aText[_crypted_text_], 8) as $str8){ // Split the word to dencrypt in a string with 8 chars each $aParSequence=explode(":", $aSequence[$iSplit]); //es.: aParSequence[0]=0, aParSequence[1]=D, aParSequence[2]=D echo "Cube N° $iSplit : (text to decrypt) $str8
\n"; echo " - number rotations : ".(count($aParSequence)-1)." "; // for ($i=1; $i=1; $i-- ){ // in inverse order from last to first (es.: L:D:L:R -> R:L:D:L ) $move = $aParSequence[$i]; $str8 = call_user_func ( REVERSE_MOVEMENT["$move"], $str8 ); // Call the corresponding reverse function for translate the vertex of cube echo "reverse move of: $move - [$str8] "; } echo "

\n"; $decryptedText .= $str8; $iSplit++; } return ($decryptedText); } ?>