SAP PI SFTP Adapter - Change to cipher AES256-CBC..?

Hello.

I have a problem in a scenario.

From SAP PI I need to read files with SFTP from a bank and process then and send idocs to SAP ERP.

We tested the scenario in an internal SFTP server and all connection, transformation and reception of idoc were ok.

When we want to connect to the bank

Our connection authentication method is password (no key) no proxy needed the company open connection...

When we connect directo to the bank with FileZilla client for example connect perfect.

But with SAP PI we encounter this error:

Exception received: com.jcraft.jsch.JSchException: Algorithm negotiation fail

From technical people they said the Bank server is not acepting the cipher method.

I can see (from FileZilla) that the Bank use: AES256-CBC

My question is:

Can I change the SAP PI SFTP Adapter cipher with some additional parameter or aditional standar module...?

Regards

Thanks!

Martin