Encrypt and Decrypt Data

[Former Member]

hi,

i'm looking for a way to encrypt or decrypt data before it's written or read from the database.

it should be possible to use some sort of key (or password) for the en- and decryption.

does somebody know some abap coding to take care that?

thanx in advance

[Former Member]

Dominik, your program actually works very good in my system.

Regards

Rich Heilman

[Former Member]

FIEB_PASSWORD_ENCRYPT and

FIEB_PASSWORD_DECRYPT are Function modules which does the same.

[Former Member]

thanx for the quick response. i just don't know how to use this functionmodules. i think i interpret the parameters wrong.

REPORT EN_DECRYPT_TEST.

*

Data enpwd(32) type c.

parameter pwd like enpwd .

• Encrypting *******************

CALL FUNCTION 'FIEB_PASSWORD_ENCRYPT'

EXPORTING

IM_DECRYPTED_PASSWORD = pwd

IMPORTING

EX_ENCRYPTED_PASSWORD = enpwd

.

• Decrypting *******************

CALL FUNCTION 'FIEB_PASSWORD_DECRYPT'

EXPORTING

IM_ENCRYPTED_PASSWORD = enpwd

IMPORTING

EX_DECRYPTED_PASSWORD = pwd

.

• Output **********************

write:/ 'Encrypt data=', enpwd,

/ 'Decrypt data=', pwd.

[Former Member]

Hi Dominik,

The usage of the Function module is correct but I am also lost as to how to explain the behavior of the decryption FM.

I'll explore some other Fms and get back to you.

Regards,

Ravi

[Former Member]

Is someone there who knows a solution?

[RichHeilman]

Dominik, your program actually works very good in my system.

Regards

Rich Heilman

[Former Member]

Dominik,

In the FIEB_PASSWORD_ENCRYPT function module, if you double click on <b>perform encrypt_password</b>, there is a FORM called <b>character_search</b>. Look for a line like this:

<b>* describe field im_string length l_length.</b>

If this line is commented out, the encryption function module will not work. This line is commented out in my 4.7 system's FIEB_PASSWORD_ENCRYPT function module. I had to copy the code to my own function module and it works fine now.

Hope this helps,

Vince.

[Former Member]

All,

We (still) have 4.6C system. These function modules work fine. I have couple of questions along this line though.

1) Do these FMs need SAPCrypto functionality for encryption and decryption? I don't beleive they do. If not, how does the FMs work?

2) Also, what type and level (RSA? 128-Bit) encryption do these modules use?

Appreciate your help.

-Thanks

[former_member215917]

Hi Vincent,

I have also copied FMs FIEB_PASSWORD_ENCRYPT and FIEB_PASSWORD_DECRYPT to uncomment piece of code you mentioned. But, I am not able to decypt the paswd properly. Help will be appriciated on how you have achieved this.

Gouri.

[indra_dewaji]

Maybe you can try this FM : DECODE_SLDPWD_BASE64 for 64 Bit encryption

[JonathanStross]

Hi Indra,

Base64 is no encryption! This is a dangerous recomendation.

Best,

Jon

[Former Member]

check this link , may be helpful

http://www.sap-img.com/abap/function-module-for-encryption-and-decryption.htm

[dellagustin]

Hi, check this article:

Best Regards,

Guilherme.