Oracle PL/SQL Obfuscation replicate 3DES with java

I have an existing oracle functions that use the function DES3Encrypt and DES3Decrypt.

I need to write the equivalent of java version to replace the oracle those compatibiliy with encryption legacy system maintenance.

What are the functions of oracle:

FUNCTION encr(input_string IN VARCHAR2, key_string IN VARCHAR2)
  RETURN VARCHAR2 IS
  encrypted_string := NULL;
  len  := lengthb(input_string);
   --String must be a multiple of 8-byte length.
  rest := len MOD 8;
  IF rest > 0 THEN
  decrypted_string := rpad(input_string, len + 8 - rest, ' ');
  ELSE
  decrypted_string := input_string;
   END IF;

  dbms_obfuscation_toolkit.DES3Encrypt(input_string  => decrypted_string,
  key_string  => key_string,
  encrypted_string => encrypted_string);

   /* HEX notation to avoid UNICODE chars */
  SELECT RAWTOHEX(encrypted_string) INTO encrypted_string FROM DUAL;

  RETURN encrypted_string;
END;

//DECRYPTION
FUNCTION decr(input_string IN VARCHAR2, key_string IN VARCHAR2)
  RETURN VARCHAR2 IS
  decrypted_string := NULL;
  encrypted_string := input_string;

   /* HEX to ASCII */
  SELECT utl_raw.cast_to_varchar2(encrypted_string)
  INTO encrypted_string
  FROM DUAL;

  dbms_obfuscation_toolkit.DES3Decrypt(input_string  => encrypted_string,
  key_string  => key_string,
  decrypted_string => decrypted_string);

  RETURN rtrim(decrypted_string);
END;

Given the Decrypt function, for example, I wrote this java code:


import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;


public class DesHelper {
  

   private Cipher _dcipher;
       public DesHelper() {
           try {

               byte[] tdesKey = new byte[24];
               System.arraycopy("2557133392096270".getBytes(StandardCharsets.US_ASCII), 0, tdesKey, 0, 16);
               System.arraycopy("2557133392096270".getBytes(StandardCharsets.US_ASCII), 0, tdesKey, 16, 8);

               final SecretKey key = new SecretKeySpec(tdesKey, "DESede");
 
               _dcipher = Cipher.getInstance("DESede/CBC/NoPadding");
               final IvParameterSpec iv = new IvParameterSpec(new byte[8]);

               _dcipher.init(Cipher.DECRYPT_MODE, key,iv);

          } catch (final Exception e) {
              throw new RuntimeException(e);
          }
      }


      public String decrypt(final String str) {
          try {

              final byte[] dec1 = hexToBytes(str);
              final byte[] decryptedBytes = _dcipher.doFinal(dec1);  
              return new String(decryptedBytes, StandardCharacters.US_ASCII);
          } catch (final Exception e) {
              System.out.println("decrypting string failed: " + str + " (" + e.getMessage() + ")");
              return null;
          }
      }

     private static byte[] hexToBytes(final String hex) {
          final byte[] bytes = new byte[hex.length() / 2];
          for (int i = 0; i < bytes.length; i++) {
              bytes[i] = (byte) Integer.parseInt(hex.substring(i * 2, i * 2 + 2), 16);
          }
          return bytes;
     }

}

It's the main:

Public class MainClass {}

Public Shared Sub main (final String [] args) {}

String txtToBeDecrypted = "DA67C73756184F20ED92DF1614CB85ED";

final DesHelper h = new DesHelper();

String xc = h.decrypt (txtToBeDecrypted);

System.out.printls (XC);

}

}


But the printed result is still a mess of characters like these:

lZ5 ????rd     

where only "rd" is correct (being the last part of the decrypted Word).

the correct decrypted word should be 'MonMotpasse '.

If the password is transformed into mypasswordmypass (encrypted: 5543417F4834268A2799D9289D864BFB)... I get: lZ5? rdmypass-> it seems that the first 64 bits are always false.

What is the problem in my code? is it just a matter of encoding?

Message modificato da 3136775 added new snippet for completeness

I found that the tip is in the vector of inialization IV...

I wrote an algorithm to capture the right bytes value and it worked... it seems not oracle uses to manipulate the first 8 bytes.

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    As a newbie, I was presentede with a scheme of database with an invalid object of type CLASS JAVA.

    I need to know why they are not valid. Expected to find information in the USER_OBJECTS. But no information at hand.

    Is there a way to know, why a CLASS JAVA type object is INVALID?

    / Jorn

    Hello

    Use [change java | http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/statements_1010.htm#SQLRF00807]:

    create or replace and compile java source named "brokenJava"
as
public class brokenJava {
    public static void test() {
        Properties p = System.getProperties();
    }
}
  8  /

Warning: Java created with compilation errors.

SQL> alter java class "brokenJava" compile;

Warning: Java altered with compilation errors.

SQL> sho err
Errors for JAVA CLASS "brokenJava":

LINE/COL ERROR
-------- -----------------------------------------------------------------
0/0      ORA-29535: source requires recompilation
SQL> alter java source "brokenJava" compile;

Warning: Java altered with compilation errors.

SQL> sho err
Errors for JAVA SOURCE "brokenJava":

LINE/COL ERROR
-------- -----------------------------------------------------------------
0/0      brokenJava:3: cannot find symbol
0/0      symbol  : class Properties
0/0      1 error
0/0      Properties p = System.getProperties();
0/0      ^
0/0      location: class brokenJava

  • When I start my online banking, the options do not load. I get a message that the applet is not started because it has not been initialized (I think it has to do with Java). What should I do?

    I go on my site of the Fund and go to my accounts. And I can get into my account. But the menu that allows you, among other things, go to the online banking is not. Keep it from the page it says "start applet" and then immediately "uninitialized applet." How as it initialized? I think, but am not really sure that it has something to do with Java.

    To see if you need an update to the Java plugin, see the Oracle here test page:

    http://www.Java.com/en/download/testjava.jsp

    Who help me?

  • With the help of EQ with Java 7 Workgroup Manager

    Oracle is declining in favour of Java 6. How can I get Bishop Grp to work with java 7? I have a 5000 PS to fw version 6.02.

    Thank you.

    It's something on the browser side OS.   What browser do you use?  The Web page sees that it is a java applet and call Java Runtime on the host computer.

    I would like to clear the cache from my browser and java and try again.

  • Windows 7 starter edition does not work with Java 7 (unable to load the chat room) how to fix?

    Hello

    I have Windows 7 edition - starter and Java 7 when I try to use a school chatrooom - java won't load properly - tech school says it's because Windows 7 does not support Java 7 - any ideas on how to fix?
    THX,
    Maja

    If he believes that the school needs to get a new technology.

    To check if the problem is that the cat does not work with Java 7, uninstall Java 7 and install Java JRE 6 from here:

    http://www.Oracle.com/technetwork/Java/javase/downloads/index.html

    You must specify the exact error messages see you or post links on the screenshots so that your problem can be better understood.

  • DBD version is compatible with Java 1.6?

    Hello. What last DBD version is compatible with Java 1.6?

    To be clear, you ask about BDB Java Edition (JE), or the original BDB, the C-based product has a Java JNI interface?

    This is the forum of BDB I. The latest version of the EIS supporting Java 6 is I 5.0.x. Java 7 is required for I 6.x and higher.

    Older versions can be downloaded here:

    http://www.Oracle.com/technetwork/database/database-technologies/BerkeleyDB/downloads/index-098622.html

    -mark

  • How to use the nocopy with java stored procedures parameters

    
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
PL/SQL Release 11.2.0.3.0 - Production
CORE    11.2.0.3.0      Production
TNS for Linux: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production

    I'm a PL/SQL programmer, but not a Java programmer. I have the following java function that does what it's supposed to add a pdf at the end of another pdf document:

    import oracle.sql.BLOB;
import org.apache.pdfbox.util.PDFMergerUtility;
import oracle.jdbc.OracleConnection;
import oracle.jdbc.driver.OracleDriver;
import java.io.OutputStream;

public class PDFUtilities {
public static BLOB appendPDF(BLOB pdfdoc1, BLOB pdfdoc2) throws Exception {
       
        //create a connection object to the current instance
          OracleConnection conn = (OracleConnection)new OracleDriver().defaultConnection();
        //create the output blob using the connection
          BLOB outPDF = BLOB.createTemporary(conn, true ,BLOB.DURATION_SESSION);
        //create an output stream to the output blob
          OutputStream os = outPDF.setBinaryStream(0);               
        //instantiate the pdf merger utility
          PDFMergerUtility mergerUtility = new PDFMergerUtility();       
        //connect the merger to the output stream
          mergerUtility.setDestinationStream(os);
        //stream from each input blob into the merger utility
          mergerUtility.addSource(pdfdoc1.getBinaryStream());
          mergerUtility.addSource(pdfdoc2.getBinaryStream());
        //merge the 2 input pdfs
          mergerUtility.mergeDocuments();             
        //do not close the output stream
        //return the blob
        return outPDF;
    }

}


    CREATE OR REPLACE package PDFTOOLS.pkg_pdf_utilities
as
function f_get_merged_pdf (
          pi_pdf1       blob
        , pi_pdf2    blob
  )
  return blob;
end pkg_pdf_utilities;
/

CREATE OR REPLACE package body PDFTOOLS.pkg_pdf_utilities
as
function f_get_merged_pdf (
          pi_pdf1       blob
        , pi_pdf2    blob
  )
  return blob
  as language java name 
  'com.mycode.pdftools.PDFUtilities.appendPDF(oracle.sql.BLOB, oracle.sql.BLOB) return oracle.sql.BLOB';
end PDFTOOLS.pkg_pdf_utilities;
/

    It's very basic, but doesn't seem to work. However, I want to my function from PL/SQL to a procedure that looks like this:

    CREATE OR REPLACE package PDFTOOLS.pkg_pdf_utilities
as
procedure sp_append_pdf (
          pio_pdf2append2   IN OUT NOCOPY blob
        , pio_pdf2append   IN OUT NOCOPY blob
  )
end pkg_pdf_utilities;
/

    What is important, what I'm trying to do is to NOCOPY the BLOBs. Otherwise, I have to read my PDF files into 2 BLOBs and create a 3rd blob as output. I prefer to be able to keep the pio_pdf2append2 as the final output. What I actually do call thing in a loop to gradually add a PDF file to a big. I'm not linking this in one operation because of concerns over the use of the system and because the pdfbox library java has would have been question after 850 in PDF format, which is not completely unrealistic in my approach.

    How could I achieve this?

    Post edited by: Pollocks01 only formatted code blocks because atlassian {code} tags didn't work.

    Passage of an argument as input/OUTPUT requires the mapping to a Java array.

    Simplified example that adds one FOR the other:

    create or replace and compile java source named blob_appender_src as
import oracle.sql.BLOB;
import java.sql.SQLException;
import java.io.OutputStream;
import java.io.InputStream;
import java.io.IOException;

public class BLOBAppender {
    public static void run (BLOB[] p1, BLOB p2) throws SQLException, IOException { 

        InputStream is = p2.getBinaryStream();
        OutputStream os = p1[0].setBinaryStream(p1[0].length()+1);                

        byte[] buffer = new byte[1024];
        int len;
        while ((len = is.read(buffer)) != -1) {
            os.write(buffer, 0, len);
        }
        os.close();
        is.close();
    }
}

    create or replace procedure blob_append (
  p_lob1  in out nocopy blob
, p_lob2  in            blob
)
as language java name 'BLOBAppender.run(oracle.sql.BLOB[], oracle.sql.BLOB)' ;
/

    SQL> declare
  2    p_lob1  blob := utl_raw.cast_to_raw('ABC');
  3    p_lob2  blob := utl_raw.cast_to_raw('DEF');
  4  begin
  5    blob_append(p_lob1, p_lob2);
  6    dbms_output.put_line(utl_raw.cast_to_varchar2(p_lob1));
  7  end;
  8  /

ABCDEF

PL/SQL procedure successfully completed.

  • How to convert Oracle DB SQL?

    Hello everyone, nice to meet you!

    First of all I apologize for:

    -my pretty terrible English

    -the fact that I am a complete novice in databases and that my question may sound like proof full for most of you

    -the fact that there are probably a billion discussions on this subject, but after many hours lost in the research in this forum or elsewhere, I just dropped...

    So now that these points are mentioned, here's my problem with my own green words:

    Goal: Be able to log in and then convert it using SSMA SQL restore an Oracle DB from a dump file (.dmp).

    My first step was to be able to install Oracle Databese Express 11 GR 2.

    Then, I installed MASA and launch it to reach my goal.

    To connect to Oracle, I now have to choose a mode of connection, including one of these two ( https://msdn.microsoft.com/en-us/library/hh313203(v=sql.110).aspx text):

    1. If you select the Standard mode, provide the following values:
      1. In the server name box, type or select the name or the IP address of the database server.
      2. If the database server is not configured to accept connections on the default port (1521), type the port number that is used for connections in the Oracle Server port box.
      3. In the Oracle SID , enter the system identifier.
      4. In the user name box, enter an Oracle account that has the necessary permissions.
      5. In the password box, enter the password for the specified username.
    2. If you select the TNSNAME mode, provide the following values:
      1. Of the login , enter connect (aka TNS) of the database identifier.
      2. In the user name box, enter an Oracle account that has the necessary permissions.
      3. In the password box, enter the password for the specified username.

    .. .but I don't know even how to find the SID of the Oracle... I tried with the name of the server: localhost, Oracle SID: XE and SYSTEM and password, but it didn't work.

    So I tried with the TNSNAME, identifier of connection mode: XE (found on my default tnsnames.ora file), SYSTEM/password and it still does not work.

    It would be really nice of you to reflect on this and share your ideas on how to get through this stage of the process and the weather, you have an idea to do the rest (BD restoration/conversion) too!

    Thank you very much.

    VMAT wrote:

    EdStevens wrote:

    [...] or if the database IS local, an ORACLE_SID incorrectly specified.  [...]

    This is my point of view. I don't know what means the "ORACLE_SID". "XE"? Something else? I don't know where to find it!

    Everything we've seen up to this says that your ORACLE_SID is XE.

    BTW, ORACLE_SID is the name of an environment variable.  The value associated with this variable should be "XE".

    As I said, I'm stuck at level zero here.

    I certainly miss to run a crucial step for, I don't know, to create a standard database where I could connect or something I don't know, but the fact is that I can not even use impdp on my .dmp file because I can't seem to log on before...

    Everything that I did is to install Oracle DB Express and MASA in practice. I missed something to do after that?

    If your installation of Oracle DB Express went well, you should have a database named XE and you should be able to connect to it.

  • JDK. DIO with Java SE instead of Java ME

    Sorry for posting in the Java ME Community. It's really a question SE with libraries of jdk.dio me.

    After my problems not solved with opening/dev/servoblaster pipe of Java ME (see my other post), I went to Java SE and added jdk.dio, netbeans libraries both on IP to raspberries.

    Opening servoblaster works very well but now a new problem:

    I am trying the same code that worked perfectly in Java ME to open a GPIO PIN for entries, as shown below. Doing this in Java SE with jdk.dio causes a nullpointerexception on the last statement when I try to check if the PIN is open. I get the same error when I try to set a value for the axis. No error message on the declaration of DeviceManager.open.

    Because it works without problem in the Java ME environment, that I suspect is has something to do with the installation of the remote device and the related authorizations.

    I SE the remote device configuration is different and I think I don't see approval in the same way as for a Java ME embeddeddevice. In netbeans, I defined the Pi as a platform for remote execution and during the generation, it connects and compile without problem.

    Permissions, I put on the invoice, pro forma. Since I found the safety instructions fairly clear, I added GPIOPin GPIOPort and DeviceMgmt permissions to several folders (better safe than sorry :-))

    /dev/test/Java.policy

    usr/lib/JVM/JDK-8-Oracle-ARM-VFP-hflt/jre/lib/security/java. Policy

    / HOMR/pi/NetBeansProjects/MyProjectName/dist/GPIO. Policy

    but it does make a difference.

    I've also set the pins GPIO B + extra in /dev/config/dio.properties-raspberrypi

    No idea why it does not work? All advice appreciated.

    Kind regards

    Willem

    code used:

    GPIOPinConfig config2 = new GPIOPinConfig (portID, 12, GPIOPinConfig.DIR_INPUT_ONLY, DeviceConfig.DEFAULT, GPIOPinConfig.TRIGGER_BOTH_EDGES, false);

    try {}
    HCSR04Receive = DeviceManager.open (config2);
    } catch (IOException ex) {}
    Logger.getLogger (hcsr04me.class.getName ()) .log (Level.SEVERE, null, ex);
    }

    System.out.println (HCSR04Receive.IsOpen ());

    Thank you

    I solved it myself a minute ago.

    I found this article: https://www.voxxed.com/blog/2014/12/device-io-api/ and then followed step by step, applying to my project.

    He ran my project without problem and between listing 3 and 4, he copy a number of files with the command cp - r/build/deviceio/lib / * home/pi / $ JAVA_HOME/jre/lib (although you need to run it as sudo and it only says not in the instructions).

    After that she also connected my NetBeans project, so I guess that these missing files caused problems.

    So now I'm going to continue my project using:

    • Java SE in order to open/dev/servoblaster, which is not possible in Java ME
    • using PI4J with WiringPi libraries for implementing good implementation of the software PWM
    • using the jdk.dio for any other control gpio libraries

    Thank you

    Willem

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