I can do a test with ssfrfc.exe. And it's telling me that the DLL cannot be loaded.
I found one more DLL: secgss.dll.
This one was loaded successfully, but doesn't have functions that I'm interested in.
=================================================
=== SSF INITIALIZATION:
===... SSF initialization file ssfrfc.ini found.
===...SSF library is C:\Program Files (x86)\SAP\FrontEnd\SapGui\Encryption\secgss.dll .
===...SSF trace level is 3 .
===...SSF hash algorithm is MD5 .
===...SSF symmetric encryption algorithm is DES-CBC .
===...completed.
================================================= =================================================
=== LOAD SSF FUNCTIONS:
===...SSF library C:\Program Files (x86)\SAP\FrontEnd\SapGui\Encryption\secgss.dll loaded successfully.
===... could not load function SsfVersion from SSF library.
===... could not load function SsfEncode from SSF library.
===... could not load function SsfDecode from SSF library.
===... could not load function SsfSign from SSF library.
===... could not load function SsfVerify from SSF library.
===... could not load function SsfEnvelope from SSF library.
===... could not load function SsfDevelope from SSF library.
===... could not load function SsfAddSign from SSF library.
===... could not load function SsfDigest from SSF library.
===... could not load function SsfDELSsfOctetstring from SSF library.
===... could not load function SsfNEWSigRcpSsfInfo from SSF library.
===... could not load function SsfDELSigRcpSsfInfo from SSF library.
===... could not load function SsfINSSigRcpSsfInfo from SSF library.
===... could not load function SsfDELSigRcpSsfInfoList from SSF library.
===... could not load function SsfQueryProperties from SSF library.
Best regards
Ana