Getting error as Algorithm negotiation fail for SFTP adapter

[Former Member]

Hi experts,

I am working fille(NFS)-->PI-->SFTP, when i was trying to connect to the SFTP Server I am getting below error.

please help me on this issue

[Former Member]

I am closing this issue.

Thanks for the help guys.

[Former Member]

Hi,

We have been facing the same issue "Algorithm Negotiation : fails " with the receiver SFTP adapter.

We are using SAP PI 7.11.

Delivering the message to the application using connection SFTP_http://sap.com/xi/XI/SFTP failed, due to: com.sap.engine.interfaces.messaging.api.exception.MessagingException: javax.resource.ResourceException: com.jcraft.jsch.JSchException: Algorithm negotiation fail.

We have updated SFTP adapter with latest patch SP04, but still getting the same error.

Thanks & Regards

Anil Kumar

[Former Member]

This happens, if your SFTP server wants to use an encryption algorithm, that your PI does not support.

Before loging in the servers negotiate the algo. Every server and client has a priority of algos that are offered.

You can find out which ones are supported, you can use the PI-INSPECTOR and log the channel once.

Alternatively, the admin of the SFTP-Server should be able to check this setting.

[Former Member]

Hi Anil,

Issue got resolved after updating the PIB2B_SFTP component to SP3 which is  SP(n-1).

Please check the component version at the PI system as per the below steps

1) Open the NetWeaver System Information using following URL
     http://<host>:<port>/nwa/sysinfo

2) Open Tab “Components Info”

3) Search for SFTP

Regards,

Ashwin

[Former Member]

Hi Ashwin,

I have already updated SFTP adapter with latest patch SP04, but still the same issue.

Currently PI is authenticating SFTP server using userid/password and not Private key.

Thanks & Regards

Anil Kumar

[Former Member]

Hi,

Issue got resolved by updating the JCE File Policy & by applying latest patch SP04 to SFTP adapter.

Thanks & Regards

Anil Kumar