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RE: dbms_obfuscation package

From: Nelson, Greg <GNelson_at_banknorth.com>
Date: Wed, 21 Mar 2001 15:58:49 -0800
Message-ID: <F001.002D4108.20010321143730@fatcity.com>

I'm not too good at PL/SQL either and I struggled with using the dbms_obfuscation package to create functions to encrypt and decrypt data. We want to encrypt passwords for DBAs in a table. Now that I have the functions they can be used for other data too. The best thing I found was a tip by Tom Kyte in his column the Jan/Feb issue of Oramag. He says the trick to using it is to make the key and input data a length divisible by 8. Using that I finally figured how to do it. Check out the article for a good example. Its late in the day and I don't know PL/SQL good enuff to figure out your exact problem. You're welcome to contact me for my code if you like.

Greg
gnelson_at_banknorth.com

-----Original Message-----
Sent: Wednesday, March 21, 2001 4:30 PM
To: Multiple recipients of list ORACLE-L

help! I am by no means the world's best PL/SQL programmer (heck, I can barely program in it, PL/SQL 101 is on my desk at home)

I am trying to see how hard it would be to add encryption to sensitive data in our database, so I'm playing with DBMS_OBFUSCATION_TOOLKIT.

I created a table:
SQL> desc test_encrypt

Name                            Null?    Type
------------------------------- -------- ----
COL1                                     VARCHAR2(10)
COL2                                     VARCHAR2(10)

and wrote a quick and dirty PL/SQL anonymous block:

begin
declare

    encrypted_str varchar2(10);
    inp_string varchar2(10);

  begin

     inp_string := '123456';
dbms_obfuscation_toolkit.desencrypt(inp_string,'lksdjfasljf',encrypted_str);

     insert into test_encrypt values (inp_string,encrypted_str);
     commit;

  end;
end;
/

when I run this, I get the following error:

     dbms_obfuscation_toolkit.desencrypt (inp_string,'lksdjfasljf',encrypted_str);

     *
ERROR at line 7:

ORA-06550: line 7, column 6:
PLS-00307: too many declarations of 'DESENCRYPT' match this call
ORA-06550: line 7, column 6:

PL/SQL: Statement ignored

now, I KNOW that they overload the procedure, they say so in the dbmsobtk.sql file in $ORACLE_HOME/rdbms/admin

but what am I doing wrong that it's not recognizing that I'm using varchar not raw and accepting what I input???

Not urgent, but annoying

Rachel



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Author: Rachel Carmichael
  INET: carmichr_at_hotmail.com

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Author: Nelson, Greg
  INET: GNelson_at_banknorth.com
Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
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To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Wed Mar 21 2001 - 17:58:49 CST

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