Modify Secure Key Exchange Algorithm for SFTP

Hello,

We use Wells Fargo as our bank and receive data via SFTP. They recently notified us that they would no longer be supporting SHA1 algorithms for SFTP connections and asked us to switch to one of the more secure exchange key algorithms below:

• DH_GROUP_EXCHANGE_SHA256
• ECDH_NISTP256

Could someone please guide me as to what specific SAP PI changes need to be made to accomplish this?

Thanks,

Brenda