PHP版本DES加密解（对应.net版与JAVA版）

/** *  * DES FOR .NET版本 * @author Administrator * */class DES_NET{    var $key;    var $iv; //偏移量         function DES_NET( $key, $iv=0 ) {    //key长度8例如:1234abcd        $this->key = $key;        if( $iv == 0 ) {            $this->iv = $key; //默认以$key 作为 iv        } else {            $this->iv = $iv; //mcrypt_create_iv ( mcrypt_get_block_size (MCRYPT_DES, MCRYPT_MODE_CBC), MCRYPT_DEV_RANDOM );        }    }         function encrypt($str) {    //加密，返回大写十六进制字符串        $size = mcrypt_get_block_size ( MCRYPT_DES, MCRYPT_MODE_CBC );        $str = $this->pkcs5Pad ( $str, $size );        return strtoupper( bin2hex( mcrypt_cbc(MCRYPT_DES, $this->key, $str, MCRYPT_ENCRYPT, $this->iv ) ) );    }         function decrypt($str) {    //解密        $strBin = $this->hex2bin( strtolower( $str ) );        $str = mcrypt_cbc( MCRYPT_DES, $this->key, $strBin, MCRYPT_DECRYPT, $this->iv );        $str = $this->pkcs5Unpad( $str );        return $str;    }         function hex2bin($hexData) {        $binData = "";        for($i = 0; $i < strlen ( $hexData ); $i += 2) {            $binData .= chr ( hexdec ( substr ( $hexData, $i, 2 ) ) );        }        return $binData;    }     function pkcs5Pad($text, $blocksize) {        $pad = $blocksize - (strlen ( $text ) % $blocksize);        return $text . str_repeat ( chr ( $pad ), $pad );    }         function pkcs5Unpad($text) {        $pad = ord ( $text {strlen ( $text ) - 1} );        if ($pad > strlen ( $text ))            return false;        if (strspn ( $text, chr ( $pad ), strlen ( $text ) - $pad ) != $pad)            return false;        return substr ( $text, 0, - 1 * $pad );    }     }/** *  * DES JAVA版本 * @author Administrator * */class DES_JAVA{	var $key;		function DES_JAVA( $key ){		$this->key = $key;	}		function encrypt($encrypt) {		$encrypt = $this->pkcs5_pad($encrypt);		$iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_DES, MCRYPT_MODE_ECB), MCRYPT_RAND);		$passcrypt = mcrypt_encrypt(MCRYPT_DES, $this->key, $encrypt, MCRYPT_MODE_ECB, $iv);		return strtoupper( bin2hex($passcrypt) );	}		function decrypt($decrypt) {		// $decoded = base64_decode($decrypt);		$decoded = pack("H*", $decrypt);		$iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_DES, MCRYPT_MODE_ECB), MCRYPT_RAND);		$decrypted = mcrypt_decrypt(MCRYPT_DES, $this->key, $decoded, MCRYPT_MODE_ECB, $iv);		return $this->pkcs5_unpad($decrypted);	}		function pkcs5_unpad($text){		$pad = ord($text{strlen($text)-1});				if ($pad > strlen($text)) return $text;		if (strspn($text, chr($pad), strlen($text) - $pad) != $pad) return $text;		return substr($text, 0, -1 * $pad);	}		function pkcs5_pad($text){		$len = strlen($text);		$mod = $len % 8;		$pad = 8 - $mod;		return $text.str_repeat(chr($pad),$pad);	}	}