SQL Encryption -- MIDRANGE-L

I found an article in the May 2005 copy of iSeries News regarding the SQL 
ENCRYPT and DECRYPT functions ad they seem to be the answer to a privacy issue 
I'm trying to address.
I set up a small test scenario to get some hands-on experience but end up 
having trouble with the DECRYPT function. Here is the sequence of events:

*       I created a simple table with the increased field sizes as defined in 
the article  -

         CREATE TABLE ANVMXP/ENCRYPT (CARD CHAR ( 28), PNUMBER DEC ( 15, 2), 
         ZNUMBER NUMERIC ( 15, 2))                                           
         Table ENCRYPT in ANVMXP created but could not be journaled.     
            
*       I inserted 3 records and encrypted the values placed into the CARD 
column (note that 'abcdef' is the passsword) -

        INSERT INTO ANVMXP/ENCRYPT                                   
        VALUES(encrypt('mickey mouse','abcdef'), 7654321, 8765432)   
        1 rows inserted in ENCRYPT in ANVMXP.                        
        INSERT INTO ANVMXP/ENCRYPT                                   
        VALUES(encrypt('donald duck','abcdef'), 7654321, 8765432)    
        1 rows inserted in ENCRYPT in ANVMXP.                        
        INSERT INTO ANVMXP/ENCRYPT                                   
        VALUES(encrypt('pluto dog','abcdef'), 7654321, 8765432)      
        1 rows inserted in ENCRYPT in ANVMXP.                        

*       When I view the contents, I can see that the field CARD has been 
encrypted -

        select * from anvmxp/encrypt   
        SELECT statement run complete. 

         CARD                                       PNUMBER                
ZNUMBER 
         *ÃÃÅÅÅNx=L***fJÃc*ÃÂ**m0              7,654,321.00           
8,765,432.00 
         *ÃÂÅÅÅNÂ{gju/*EÃÃLÃÂVÃÃ               7,654,321.00         
  8,765,432.00 
         **UÅÅÅNsÅ**|o8Ã*****Ã*f~              7,654,321.00           
8,765,432.00 

*       When I try to view the CARD column in unencrypted form I get -

SELECT decrypt_char(card,'abcdef'), PNUMBER, ZNUMBER FROM  
anvmxp/encrypt  

 Argument 01 of function DECRYPT_CHAR not valid. 

This error translates to SQL0171, but I can't see anything that helps me there. 

Any one else tried this and succeeded?   


Thanks.
                                        

*       
Mike Pantzopoulos

EIG-Ansvar Limited
Tel  : 61 (3) 9614 3535
Fax: 61 (3) 9614 2740



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