<?php 

require_once (‘KISA_SEED_CBC.php‘); 

$g_bszUser_key = null; 

if(isset($_POST[‘KEY’])) 

    $g_bszUser_key = $_POST[‘KEY’]; 

if($g_bszUser_key == null) 

{ 

    $g_bszUser_key = “88,E3,4F,8F,08,17,79,F1,E9,F3,94,37,0A,D4,05,89″; 

} 

$g_bszIV = null; 

if(isset($_POST[‘IV’])) 

    $g_bszIV = $_POST[‘IV’]; 

if($g_bszIV == null) 

{ 

    $g_bszIV = “26,8D,66,A7,35,A8,1A,81,6F,BA,D9,FA,36,16,25,01″; 

} 

function encrypt($bszIV, $bszUser_key, $str) { 

    $planBytes = explode(“,“,$str); 

    $keyBytes = explode(“,“,$bszUser_key); 

    $IVBytes = explode(“,“,$bszIV); 

    for($i = 0; $i < 16; $i++) 

    { 

        $keyBytes[$i] = hexdec($keyBytes[$i]); 

        $IVBytes[$i] = hexdec($IVBytes[$i]); 

    } 

    for ($i = 0; $i < count($planBytes); $i++) { 

        $planBytes[$i] = hexdec($planBytes[$i]); 

    } 

    if (count($planBytes) == 0) { 

        return $str; 

    } 

    $ret = null; 

    $bszChiperText = null; 

    $pdwRoundKey = array_pad(array(),32,0); 

    //방법 1 

    $bszChiperText = KISA_SEED_CBC::SEED_CBC_Encrypt($keyBytes, $IVBytes, $planBytes, 0, count($planBytes)); 

    $r = count($bszChiperText); 

    for($i=0;$i< $r;$i++) { 

        $ret .=  sprintf(“%02X”, $bszChiperText[$i]).“,”; 

    } 

    return substr($ret,0,strlen($ret)-1); 

/* 

    // 방법 2 

    $info = new KISA_SEED_INFO(); 

    $message_length = count($planBytes); 

    KISA_SEED_CBC::SEED_CBC_init( $info, KISA_ENC_DEC::KISA_ENCRYPT, $keyBytes, $IVBytes ); 

    $process_blockLeng = 32; 

    $outbuf = array_pad(array(), $process_blockLeng/4, 0); 

    for($i = 0; $i < $message_length-$process_blockLeng; ) 

    { 

        Common::arraycopy_system($planBytes, $i, $pbszPlainText, 0, $process_blockLeng); 

        $data = KISA_SEED_CBC::chartoint32_for_SEED_CBC($pbszPlainText, $process_blockLeng); 

        KISA_SEED_CBC::SEED_CBC_Process( $info, $data, $process_blockLeng, $outbuf, $nRetOutLeng ); 

        $cdata = KISA_SEED_CBC::int32tochar_for_SEED_CBC($outbuf, $nRetOutLeng); 

        Common::arraycopy_system($cdata, 0, $pbszCipherText, $i,  $nRetOutLeng ); 

        $i+= $nRetOutLeng; 

    } 

    $remainleng = $message_length%$process_blockLeng; 

    if($remainleng==0) 

    { 

        $remainleng = $process_blockLeng; 

    } 

    Common::arraycopy_system($planBytes, $i, $pbszPlainText, 0, $remainleng); 

    $data = KISA_SEED_CBC::chartoint32_for_SEED_CBC($pbszPlainText, $remainleng); 

    KISA_SEED_CBC::SEED_CBC_Process( $info, $data, $remainleng, $outbuf, $nRetOutLeng ); 

    $cdata = KISA_SEED_CBC::int32tochar_for_SEED_CBC($outbuf, $nRetOutLeng); 

    Common::arraycopy_system($cdata, 0, $pbszCipherText, $i,  $nRetOutLeng ); 

    $i+= $nRetOutLeng; 

    KISA_SEED_CBC::SEED_CBC_Close( $info, $outbuf, 0, $nPaddingLeng ); 

    $cdata = KISA_SEED_CBC::int32tochar_for_SEED_CBC($outbuf, $nPaddingLeng); 

    Common::arraycopy_system($cdata, 0, $pbszCipherText, $i,  $nPaddingLeng ); 

    $data = null; 

    $cdata = null; 

    $outbuf = null; 

    for($i=0;$i< sizeof($pbszCipherText);$i++) { 

        $ret .=  sprintf(“%02X”, $pbszCipherText[$i]).”,”; 

    } 

    return substr($ret,0,strlen($ret)-1); 

*/ 

} 

function decrypt($bszIV, $bszUser_key, $str) { 

    $planBytes = explode(“,“,$str); 

    $keyBytes = explode(“,“,$bszUser_key); 

    $IVBytes = explode(“,“,$bszIV); 

    for($i = 0; $i < 16; $i++) 

    { 

        $keyBytes[$i] = hexdec($keyBytes[$i]); 

        $IVBytes[$i] = hexdec($IVBytes[$i]); 

    } 

    for ($i = 0; $i < count($planBytes); $i++) { 

        $planBytes[$i] = hexdec($planBytes[$i]); 

    } 

    if (count($planBytes) == 0) { 

        return $str; 

    } 

    $pdwRoundKey = array_pad(array(),32,0); 

    $bszPlainText = null; 

    // 방법 1 

    $bszPlainText = KISA_SEED_CBC::SEED_CBC_Decrypt($keyBytes, $IVBytes, $planBytes, 0, count($planBytes)); 

    for($i=0;$i< sizeof($bszPlainText);$i++) { 

        $planBytresMessage .=  sprintf(“%02X”, $bszPlainText[$i]).“,”; 

    } 

    return substr($planBytresMessage,0,strlen($planBytresMessage)-1); 

/* 

    // 방법 2 

    $info = new KISA_SEED_INFO(); 

    $nCipherTextLen = count($pbszCipherText); 

    $EncryptedMessage_length = count($planBytes); 

    if($EncryptedMessage_length%KISA_SEED_CBC::BLOCK_SIZE_SEED) 

    { 

        return “”; 

    } 

    KISA_SEED_CBC::SEED_CBC_init( $info, KISA_ENC_DEC::KISA_DECRYPT, $keyBytes, $IVBytes ); 

    $process_blockLeng = 32; 

    $outbuf = array_pad(array(), $process_blockLeng/4, 0); 

    for($i = 0; $i < $EncryptedMessage_length-$process_blockLeng; ) 

    { 

        Common::arraycopy_system($planBytes, $i, $pbszCipherText, 0, $process_blockLeng); 

        $data = KISA_SEED_CBC::chartoint32_for_SEED_CBC($pbszCipherText,$process_blockLeng); 

        KISA_SEED_CBC::SEED_CBC_Process( $info, $data, $process_blockLeng, $outbuf, $nRetOutLeng ); 

        $cdata = KISA_SEED_CBC::int32tochar_for_SEED_CBC( $outbuf, $nRetOutLeng ); 

        Common::arraycopy_system($cdata, 0, $pbszPlainText, $i,  $nRetOutLeng ); 

        $i+= $nRetOutLeng; 

    } 

    $remainleng = $EncryptedMessage_length%$process_blockLeng; 

    if($remainleng==0) 

    { 

        $remainleng = $process_blockLeng; 

    }    

    Common::arraycopy_system($planBytes, $i, $pbszCipherText, 0, $remainleng); 

    $data = KISA_SEED_CBC::chartoint32_for_SEED_CBC($pbszCipherText,$remainleng); 

    KISA_SEED_CBC::SEED_CBC_Process( $info, $data, $remainleng, $outbuf, $nRetOutLeng ); 

    if(KISA_SEED_CBC::SEED_CBC_Close( $info, $outbuf, $nRetOutLeng, $nPaddingLeng)) 

    { 

        $cdata = KISA_SEED_CBC::int32tochar_for_SEED_CBC( $outbuf, $remainleng-$nPaddingLeng ); 

        Common::arraycopy_system($cdata, 0, $pbszPlainText, $i, $remainleng-$nPaddingLeng ); 

        $message_length = $i+ $remainleng -$nPaddingLeng; 

        $result = array_pad(array(), $message_length, 0); 

        Common::arraycopy_system($pbszPlainText, 0, $result, 0, $message_length); 

        $data = null; 

        $cdata = null; 

        $outbuf = null; 

        for($i=0;$i< sizeof($result);$i++) { 

            $planBytresMessage .=  sprintf(“%02X”, $result[$i]).”,”; 

        } 

        return substr($planBytresMessage,0,strlen($planBytresMessage)-1); 

    } 

    return “”; 

*/ 

} 

$enc = null; 

$dec = null; 

$textin = null; 

$textout = null; 

if(isset($_POST[‘ENC’])) 

    $enc = $_POST[‘ENC’]; 

if(isset($_POST[‘DEC’])) 

    $dec = $_POST[‘DEC’]; 

if(isset($_POST[‘TEXTIN’])) 

    $textin = $_POST[‘TEXTIN’]; 

if($textin<>null) { //평문문자열이 있으면, 이것으로 평문 HEX 구성 

    //HEX 변환 

    $enc = strToHexCommaSeparated($textin); 

} 

if($enc==null) { 

    $enc2 = “”; 

} else { 

    //HEX 변환값으로 암호화 시작 

    $g_bszPlainText = $enc; 

    $enc2 = encrypt($g_bszIV, $g_bszUser_key, $g_bszPlainText); 

} 

if($dec==null) { 

    $dec2 = “”; 

} else { 

    //복호화 시작 

    $g_bszChiperText = $dec; 

    $dec2 = decrypt($g_bszIV, $g_bszUser_key, $g_bszChiperText); 

    $textout = hexCommaToStr($dec2);//문자로 변환 

} 

//일반 문자열을 HEX 로 변환하고, 콤마로 분리하여 리턴 

function strToHexCommaSeparated($string){ 

    $hex=”; 

    for ($i=0; $i < strlen($string); $i++){ 

        $hex .= ($hex ? “,”:“”) . dechex(ord($string[$i])); 

    } 

    return $hex; 

} 

//콤마로 분리되어 전달된 HEX 값에서 콤마를 제거하고 문자열로 변환하여 리턴 

function hexCommaToStr($hexComma){ 

    $hex = str_replace(“,”,““,$hexComma); 

    $string=”; 

    for ($i=0; $i < strlen($hex)-1; $i+=2){ 

        $string .= chr(hexdec($hex[$i].$hex[$i+1])); 

    } 

    return $string; 

} 

?> 

<html> 

<head> 

<meta http-equiv=“Content-Type” content=“text/html; charset=utf-8”>  

<title>국산암호 [SEED – CBC] 테스트 페이지</title> 

</head> 

<body> 

<center> 

<h1>국산 암호 [SEED-CBC] 테스트 페이지</h1> 

<form name=“myform“ method=“post” action=“./index.php“> 

<input type=“hidden” name=“method” id=“method” /> 

<table border=“0”> 

<tr> 

<td style=“text-align:center;”> 

<form method=“post” action=“./index.php“> 

<table border=“0”> 

<tr><td></td><td>&lt;암호화 예제&gt;</td></tr> 

<tr> 

<td>키(KEY) : </td>  

<td><textarea name=“KEY” style=“width:400px;height:100px;”><?=$g_bszUser_key?></textarea></td> 

</tr> 

<tr> 

<td>초기값(IV) : </td>  

<td><textarea name=“IV” style=“width:400px;height:100px;”><?=$g_bszIV?></textarea></td> 

</tr> 

<tr> 

<td>평문 문자열 : </td>  

<td><textarea name=“TEXTIN” style=“width:400px;height:100px;”><?=$textin?></textarea></td> 

</tr> 

<tr> 

<td>평문 HEX : </td>  

<td><textarea name=“ENC” style=“width:400px;height:100px;”><?=$enc?></textarea></td> 

</tr> 

<tr> 

<td></td> 

<td><input type=“submit” name=“gogo“ value=“▼ 암호화“> </td> 

</tr> 

<tr> 

<td>암호문 : </td>  

<td><textarea name=“ENC2” style=“width:400px;height:100px;”><?=$enc2?></textarea></td> 

</tr> 

</table> 

</form>  

</td> 

<td style=“width:1px;background-color:#aaaaff;”> 

</td> 

<td style=“text-align:center;”> 

<form method=“post” action=“./index.php“> 

<table border=“0”> 

<tr><td></td><td>&lt;복호화 예제&gt;</td></tr> 

<tr> 

<td>키(KEY) : </td>  

<td><textarea name=“KEY” style=“width:400px;height:100px;”><?=$g_bszUser_key?></textarea></td> 

</tr> 

<tr> 

<td>초기값(IV) : </td>  

<td><textarea name=“IV” style=“width:400px;height:100px;”><?=$g_bszIV?></textarea></td> 

</tr> 

<tr> 

<td>암호문 : </td>  

<td><textarea name=“DEC” style=“width:400px;height:100px;”><?=$dec?></textarea></td> 

</tr> 

<tr> 

<td></td> 

<td><input type=“submit” name=“gogo“ value=“▼ 복호화“></td> 

</tr> 

<tr> 

<td>평문 HEX: </td>  

<td><textarea name=“DEC2” style=“width:400px;height:100px;”><?=$dec2?></textarea></td> 

</tr> 

<tr> 

<td>평문 TEXT: </td>  

<td><textarea name=“TEXTOUT” style=“width:400px;height:100px;”><?=$textout?></textarea></td> 

</tr> 

</table> 

</form>  

</td> 

</tr> 

</table> 

</form>  

</td> 

</tr> 

</table> 

<div style=“margin-top:20px;margin-bottom:20px;”><font color=“#ff0000”>※ 평문 문자열이 기록되면, 평문 HEX는 자동생성됩니다.</font></div> 

<div style=“margin-top:20px;margin-bottom:20px;”><font color=“#ff0000”>※ 평문 및 암호문은 Hex 값의 0x를 제외하고 콤마로 구분하여 띄어쓰기 없이 입력합니다.(ex : 00,01,0A,0B)</font></div> 

<div style=“border: 1px solid #aaaaff; background-color:#ddddff;”> 

<table border=“0”> 

<tr> 

<td>&lt;키(KEY)&gt; : </td> 

<td>88,E3,4F,8F,08,17,79,F1,E9,F3,94,37,0A,D4,05,89</td> 

</tr> 

<tr> 

<td>&lt;초기값(IV)&gt; : </td> 

<td>26,8D,66,A7,35,A8,1A,81,6F,BA,D9,FA,36,16,25,01</td> 

</tr> 

<tr> 

<td>&lt;평문&gt; : </td> 

<td>00,01,02,03,04,05,06,07,08,09,0A,0B,0C,0D,0E,0F</td> 

</tr> 

<tr> 

<td>&lt;암호문&gt; : </td> 

<td>75,DD,A4,B0,65,FF,86,42,7D,44,8C,54,03,D3,5A,07,D3,5A,AB,86,7C,8B,F2,55,7D,82,38,8E,A7,C0,D0,F1</td> 

</tr> 

</table> 

</div> 

</form> 

</center> 

</body> 

</html>