topic Encryption and Decryption of ABAP Code in Application Development and Automation Discussions

Encryption and Decryption of ABAP Code

former_member646690 — Mon, 28 Jul 2014 06:42:12 GMT

Hi All,

Is it possible to Encryption and Decryption of ABAP Code ?

For Encryption : I have found if i

* append *special* character 1st line to hide source code

Like : APPEND '*@#@@[SAP]' to report

Than my Report will be ecrypted ? how to decrypted the report else any other way around for Encryption and Decryption of ABAP Code?

Re: Encryption and Decryption of ABAP Code

Former Member — Mon, 28 Jul 2014 07:01:04 GMT

Hello,

Please refer to this link in SCN.

http://scn.sap.com/people/kathirvel.balakrishnan2/blog/2006/11/21/encryption-decryption-of-data-using-abap

You can also use the following FM to encrypt

CALL FUNCTION 'FIEB_PASSWORD_ENCRYPT'

Use the following FM to decrypt

CALL FUNCTION 'FIEB_PASSWORD_DECRYPT'

By these FM you can encrypt & decrypt any fields of the Program.

Two more things:
1. You can't use these FM to decode user passwords.

2. Although their import parameters are case sensitive, when you test them from se37, the import parameters are converted to uppercase (thus, it may seem that they aren't working). A suggestion: encapsulate them in a custom FM that receives a string to be encrytped/decrypted and a parameter that says if you want to encrypt or decrypt and call this fm from your program. Test them very carefully, because once the string has been encrypted the decryption side is the only way to get it back.

function zsecurtext.
*"----------------------------------------------------------------------
*"*"Interfase local
*" IMPORTING
*"     REFERENCE(INTEXT) TYPE FIEB_DECRYPTED_PASSWD OPTIONAL
*"     REFERENCE(ENCRYPT) TYPE C OPTIONAL
*" EXPORTING
*"     REFERENCE(OUTTEXT) TYPE FIEB_DECRYPTED_PASSWD
*"----------------------------------------------------------------------
** NOTE: This code doesn't work if run from se37. You should
** encrypt
if encrypt = 'X'.
    call function 'FIEB_PASSWORD_ENCRYPT'
         exporting
              im_decrypted_password = intext
         importing
              ex_encrypted_password = outtext.
   else.
******** Decrypting *******************
    call function 'FIEB_PASSWORD_DECRYPT'
         exporting
              im_encrypted_password = intext
         importing
              ex_decrypted_password = outtext.
endif.

endfunction.

Hope it helps.

Regards,

Yovish.

Re: Encryption and Decryption of ABAP Code

former_member646690 — Mon, 28 Jul 2014 09:17:46 GMT

Thanks Yovish for your prompt .

But My objective is to hide or encrypt whole code from any other user .

I achieved Hiding the ABAP Code

Code :

DATA: GT_CODE(72) TYPE C OCCURS 0,
            GV_CODE      LIKE LINE OF GT_CODE,
            GT_CODE2(72) TYPE C OCCURS 0.

PARAMETERS: PROGRAM LIKE SY-REPID.

START-OF-SELECTION.

READ REPORT PROGRAM INTO GT_CODE.

IF SY-SUBRC NE 0.
    MESSAGE E398(00) WITH 'Report' PROGRAM 'not found.'.
ENDIF.

READ TABLE GT_CODE INDEX 1 INTO GV_CODE.

APPEND '*@#@@[SAP]' TO GT_CODE2.

LOOP AT GT_CODE INTO GV_CODE.
    APPEND GV_CODE TO GT_CODE2.
ENDLOOP.

INSERT REPORT PROGRAM FROM GT_CODE2.

WRITE :/ PROGRAM , ' Encrypted Sucessful !!!'.

This I have tried but Decrypting is not working ...

Please Suggest