How to create checksum of a report to insert into RSECACHK (Secure Store)?

[Former Member]

Hi SDN Security Experts,

I want to use the ABAP secure store to implement a YubiKey authentication server in ABAP. I've already published a [ABAP Class for YubiKey authentication against the Yubico Web Service API|https://www.sdn.sap.com/irj/sdn/weblogs?blog=/pub/wlg/10661] [original link is broken] [original link is broken] [original link is broken];.

Here's my problem:

I can successfully use the secure store using the demo repots SECSTORE01 and SECSTORE02. But when I want to use the secure store in my own report I only get the error message:

Access to the secure store denied

Message no. SECSTORE026

This is caused by a missing entry for my report in the RSECACHK table. But this table does not only needs the report name, it also needs a cryptographic check sum. But I haven't found a documentation how this check sum is created.

Does anybody knows what algorithm is used to calculate this checksum?

Best regards

Gregor

[Bernhard_SAP]

Hi Gregor,

please refer to [SAP Note 502422|https://service.sap.com/sap/support/notes/502422] -> explanation for SECSTORE026.

The important lines are:

""Using the secure storage in customer programs is not allowed and

will always return this error. ""

b.rgds, Bernhard

[gregorw]

Hi Bernhard,

is there a special reason to do so? With WebAS ABAP 7.00 there is a namespace defined which can be used by the application. So I don't get a general access to the secure store.

Best regards

Gregor

[gregorw]

Hi Everybody,

I've just got an answer from OSS that it is not possible to use the secure store because of German export restrictions. Customers have to use the [Secure Store and Forward (SSF)|http://help.sap.com/saphelp_nw70/helpdata/EN/6c/5b0b37233f7c6fe10000009b38f936/frameset.htm] functionality.

Best regards

Gregor