Dear Hareesh,
The link was quite helpful and informative. Our scenario is also similar, except that we would require to use of SFTP adapter in place of the SOAP adapter. Can WSSE be configured for SFTP adapters the same way as shown with SOAP?
Also, we are using PFX certificate..can that be used to sign using this method? Is it supported?
Converting PFX to PEM is also possible and feasible for us.