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Access Client SFTP server using SSH key instead of Password

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Posted on by NP-08050520-0

Hi Everyone,

I have developed integration between BC and SFTP. I have written C# code to fetch SFTP server and upload file in it using username and password. I am using this C# code as Azure function APP API in BC and added code to get data from BC and using this function app sending file to SFTP server.
This is working correctly with sftp username and password. But the problem is now client have changed their logics and only password is not enough to access their SFTP server.
They have provide me SSH Private Key and they want me to access their SFTP sever using that SSH key.

Does any one know how can I achieve that. It will be really helpful for me.

Is there any way to pass SSH key using Azure?

Thanks

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Dynamics 365 Business Central

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Jainam M. Kothari 12,148 Super User 2025 Season 2 on at

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Access Client SFTP server using SSH key instead of Password

Hello,

i have not much knowledge of this but May this can help : https://cloudinfrastructureservices.co.uk/sftp-authentication-methods-ssh-keys-passwords-or-host-based/

https://unix.stackexchange.com/questions/23291/how-to-ssh-to-remote-server-using-a-private-key

https://superuser.com/questions/1566901/how-do-i-connect-to-sftp-with-provided-ssh-key

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Gerardo Rentería Ga... 23,590 Most Valuable Professional on at

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Access Client SFTP server using SSH key instead of Password

Hi, good day
I hope this can help you, and give you some hints.

Dynamics 365 Business Central SaaS: save a file to an SFTP server – Stefano Demiliani

Best Regards
Gerardo

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Khushbu Rajvi. 19,182 Super User 2025 Season 2 on at

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Access Client SFTP server using SSH key instead of Password

Please check : https://demiliani.com/2020/03/31/dynamics-365-business-central-saas-save-a-file-to-an-sftp-server-the-logic-app-way/

https://community.dynamics.com/blogs/post/?postid=f3600461-2eba-4459-acfe-2b95fa47240b

https://learn.microsoft.com/en-us/azure/connectors/connectors-sftp-ssh?tabs=consumption

https://learn.microsoft.com/en-us/azure/logic-apps/connectors/built-in/reference/sftp/

https://ivansingleton.dev/how-to-read-files-via-sftp-in-business-central/

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Ramesh Kumar 7,519 Super User 2025 Season 2 on at

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Access Client SFTP server using SSH key instead of Password

You're on the right track — integrating Business Central → Azure Function → SFTP — and now the client has switched from username/password authentication to SSH key-based authentication, which is quite common for security-conscious environments. Here’s how you can update your Azure Function (in C#) to support SFTP with SSH private key authentication, and how to securely manage the SSH key in Azure.

Thanks, Ramesh

If this was helpful, please check the "Does this answer your question?" box and mark it as verified.

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YUN ZHU 93,135 Super User 2025 Season 2 on at

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Access Client SFTP server using SSH key instead of Password

Strictly speaking, this is not a BC problem. I suggest you submit this question to the Azure forum. I believe the experts there will give you better suggestions.

https://azure.microsoft.com/en-us/support/community

Thanks.

ZHU

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Vahid Ghafarpour 11,980 Super User 2025 Season 2 on at

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Access Client SFTP server using SSH key instead of Password

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