今天用ecshop时，发现了这个问题。
经过解码， 完美解决问题。
贴出解码代码，以供参考。
<?php // This file is protected by copyright law & provided under license. Copyright(C) 2005-2009 , All rights reserved.// This file is protected by copyright law & provided under license. Copyright(C) 2005-2009 , All rights reserved.define("DES_KEY", "SCUBEPGW");define("HASH_PAD", "0001ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff003021300906052b0e03021a05000414");bcscale(0);$private_key = array(); /*function hex2bin($hexdata) {$bindata = '';if (strlen($hexdata) % 2 == 1) {$hexdata = '0' . $hexdata;}for ($i = 0; $i < strlen($hexdata); $i+=2) {$bindata .= chr(hexdec(substr($hexdata, $i, 2)));}return $bindata;}*/ function padstr($src, $len = 256, $chr = '0', $d = 'L') {$ret = trim($src);$padlen = $len – strlen($ret);if ($padlen > 0) {$pad = str_repeat($chr, $padlen);if (strtoupper($d) == 'L') {$ret = $pad . $ret;} else {$ret = $ret . $pad;}}return $ret;} function bin2int($bindata) {$hexdata = bin2hex($bindata);return bchexdec($hexdata);} function bchexdec($hexdata) {$ret = '0';$len = strlen($hexdata);for ($i = 0; $i < $len; $i++) {$hex = substr($hexdata, $i, 1);$dec = hexdec($hex);$exp = $len – $i – 1;$pow = bcpow('16', $exp);$tmp = bcmul($dec, $pow);$ret = bcadd($ret, $tmp);}return $ret;} function bcdechex($decdata) {$s = $decdata;$ret = '';while ($s != '0') {$m = bcmod($s, '16');$s = bcdiv($s, '16');$hex = dechex($m);$ret = $hex . $ret;}return $ret;} function sha1_128($string) {$hash = sha1($string);$sha_bin = hex2bin($hash);$sha_pad = hex2bin(HASH_PAD);return $sha_pad . $sha_bin;} function mybcpowmod($num, $pow, $mod) {if (function_exists('bcpowmod')) {return bcpowmod($num, $pow, $mod);}return emubcpowmod($num, $pow, $mod);} function emubcpowmod($num, $pow, $mod) {$result = '1';do {if (!bccomp(bcmod($pow, '2'), '1')) {$result = bcmod(bcmul($result, $num), $mod);}$num = bcmod(bcpow($num, '2'), $mod);$pow = bcdiv($pow, '2');} while (bccomp($pow, '0'));return $result;} function rsa_encrypt($private_key, $input) {$p = bin2int($private_key["prime1"]);$q = bin2int($private_key["prime2"]);$u = bin2int($private_key["coefficient"]);$dP = bin2int($private_key["prime_exponent1"]);$dQ = bin2int($private_key["prime_exponent2"]);$c = bin2int($input);$cp = bcmod($c, $p);$cq = bcmod($c, $q);$a = mybcpowmod($cp, $dP, $p);$b = mybcpowmod($cq, $dQ, $q);if (bccomp($a, $b) >= 0) {$result = bcsub($a, $b);} else {$result = bcsub($b, $a);$result = bcsub($p, $result);}$result = bcmod($result, $p);$result = bcmul($result, $u);$result = bcmod($result, $p);$result = bcmul($result, $q);$result = bcadd($result, $b);$ret = bcdechex($result);$ret = strtoupper(padstr($ret));return (strlen($ret) == 256) ? $ret : false;} function rsa_decrypt($input) {global $private_key;$check = bchexdec($input);$modulus = bin2int($private_key["modulus"]);$exponent = bchexdec("010001");$result = bcpowmod($check, $exponent, $modulus);$rb = bcdechex($result);return strtoupper(padstr($rb));} function buildKey($key) {global $private_key;if (count($private_key) > 0) {foreach ($private_key as $name => $value) {unset($private_key[$name]);}}$ret = false;$key_file = parse_ini_file($key);if (!$key_file) {return $ret;}$hex = "";if (array_key_exists("MERID", $key_file)) {$ret = $key_file["MERID"];$private_key["MERID"] = $ret;$hex = substr($key_file["prikeyS"], 80);} elseif (array_key_exists("PGID", $key_file)) {$ret = $key_file["PGID"];$private_key["PGID"] = $ret;$hex = substr($key_file["pubkeyS"], 48);} else {return $ret;}$bin = hex2bin($hex);$private_key["modulus"] = substr($bin, 0, 128);$cipher = MCRYPT_DES;$iv = str_repeat("\x00", 8);$prime1 = substr($bin, 384, 64);$enc = mcrypt_cbc($cipher, DES_KEY, $prime1, MCRYPT_DECRYPT, $iv);$private_key["prime1"] = $enc;$prime2 = substr($bin, 448, 64);$enc = mcrypt_cbc($cipher, DES_KEY, $prime2, MCRYPT_DECRYPT, $iv);$private_key["prime2"] = $enc;$prime_exponent1 = substr($bin, 512, 64);$enc = mcrypt_cbc($cipher, DES_KEY, $prime_exponent1, MCRYPT_DECRYPT, $iv);$private_key["prime_exponent1"] = $enc;$prime_exponent2 = substr($bin, 576, 64);$enc = mcrypt_cbc($cipher, DES_KEY, $prime_exponent2, MCRYPT_DECRYPT, $iv);$private_key["prime_exponent2"] = $enc;$coefficient = substr($bin, 640, 64);$enc = mcrypt_cbc($cipher, DES_KEY, $coefficient, MCRYPT_DECRYPT, $iv);$private_key["coefficient"] = $enc;return $ret;} function sign($msg) {global $private_key;if (!array_key_exists("MERID", $private_key)) {return false;}$hb = sha1_128($msg);return rsa_encrypt($private_key, $hb);} function signOrder($merid, $ordno, $amount, $curyid, $transdate, $transtype) {if (strlen($merid) != 15)return false;if (strlen($ordno) != 16)return false;if (strlen($amount) != 12)return false;if (strlen($curyid) != 3)return false;if (strlen($transdate) != 8)return false;if (strlen($transtype) != 4)return false;$plain = $merid . $ordno . $amount . $curyid . $transdate . $transtype;return sign($plain);} function verify($plain, $check) {global $private_key;if (!array_key_exists("PGID", $private_key)) {return false;}if (strlen($check) != 256) {return false;}$hb = sha1_128($plain);$hbhex = strtoupper(bin2hex($hb));$rbhex = rsa_decrypt($check);return $hbhex == $rbhex ? true : false;} function verifyTransResponse($merid, $ordno, $amount, $curyid, $transdate, $transtype, $ordstatus, $check) {if (strlen($merid) != 15)return false;if (strlen($ordno) != 16)return false;if (strlen($amount) != 12)return false;if (strlen($curyid) != 3)return false;if (strlen($transdate) != 8)return false;if (strlen($transtype) != 4)return false;if (strlen($ordstatus) != 4)return false;if (strlen($check) != 256)return false;$plain = $merid . $ordno . $amount . $curyid . $transdate . $transtype . $ordstatus;return verify($plain, $check);}
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，一个背包，几本书，所有喜欢的歌，
