How to generate public key from Azure Logic App to connect to AWS S3 Bucket via SFTP-SSH connector

Question

How to generate public key from Azure Logic App to connect to AWS S3 Bucket via SFTP-SSH connector

Vivek Komarla Bhaskar 956

I need to connect to an AWS S3 bucket via SFTP, so my client needs the public key of the machine I use for the SFTP. As I'm using Azure Logic Apps -> SFTP-SSH connector to access the AWS S3 bucket, how do I generate a public key?

Screenshot 2023-09-27 at 10.33.16 am

2 answers

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Answer 1

MayankBargali-MSFT 70,986 Moderator

@Vivek Komarla Bhaskar Thanks for reaching out. The question is more towards the ssh keygen rather than logic app. You can ask the expert in stackoverflow .

Not and expert but you can try the below and in case if didn't work you can reach out to the ssh experts in stackoverflow.

To generate a public key, you can use the ssh-keygen command on your local machine. Here are the steps to generate a public key:

Open a terminal or command prompt on your local machine.
Run the following command: ssh-keygen -t rsa -b 4096
When prompted, enter a file name to save the key pair. The default is id_rsa.
When prompted, enter a passphrase for the key pair. This is optional but recommended for security.
The public key will be saved in a file with the same name as the private key, but with a .pub extension. For example, if the private key is id_rsa, the public key will be id_rsa.pub.

Once you have generated the public key, you can provide it to your SFTP client to connect to the AWS S3 bucket.

Please "Accept Answer" if the answer is helpful so that it can help others in the community.

Vivek Komarla Bhaskar 956 Reputation points

2023-09-28T22:32:17.61+00:00

Hi, @MayankBargali-MSFT Thanks for your reply!

I'm aware of generating a public key from a local machine or VM, my question was if I use the logic app instead of a VM or local machine, how to generate a public key?
MayankBargali-MSFT 70,986 Reputation points Moderator

2023-09-29T05:10:58.3133333+00:00

@Vivek Komarla Bhaskar There are no connector in logic app that can generate the public key from the private key.
Vivek Komarla Bhaskar 956 Reputation points

2023-10-03T10:27:23.9166667+00:00

Hi, @MayankBargali-MSFT So if my client is asking for a public key in order to establish setup. What do I do now if in case I need to use a logic app?
MayankBargali-MSFT 70,986 Reputation points Moderator

2023-10-04T10:22:18.3433333+00:00

@Vivek Komarla Bhaskar The SFTP-SSH connector supports both private key authentication and password authentication. You cannot use the public key for authentication. For more details you can refer to this document.
Vivek Komarla Bhaskar 956 Reputation points

2023-10-04T17:13:18.01+00:00

Hi, I don't think my question has been understood correctly. Leave about the connector, generally speaking, in order to successfully connect to an SFTP host, I must provide the host team with a public key. In this case, how do I generate a public key that I can share with the host team if I use Azure Logic App's: SFTP-SSH connector to connect to SFTP servers?
MayankBargali-MSFT 70,986 Reputation points Moderator

2023-10-05T02:40:33.2+00:00

@Vivek Komarla Bhaskar Apology for that. It looks like you want the steps in general how you can generate the public/private key that can used to any SFT client to connect (not specific to logic app). I have limited knowledge on key generation and as you are using the AWS S3 Bucket they would the right experts to confirm how the key can be generated at their end which can be used to logic app end.
Vivek Komarla Bhaskar 956 Reputation points

2023-10-11T12:19:46.0366667+00:00

Hi @MayankBargali-MSFT

I was able to find the solution and it worked. There is a service called SSH Keys on Azure, using this we can generate keys as required.

Answer 2

Hi.

I understand that you want to access your S3 bucket from Logic Apps using the SFTP protocol.

First, unfortunately Amazon S3 does not provide a method for direct SFTP access.

You have two options.

Access an S3 bucket via HTTPS using AWS SDKs or APIs without using SFTP. A connector for Amazon S3 is provided.
1. https://learn.microsoft.com/ja-jp/connectors/amazons3/
Deploy AWS Transfer Family on AWS and create and use a managed SFTP server. You can specify any S3 bucket for Transfer Family storage.
1. https://docs.aws.amazon.com/transfer/latest/userguide/create-server-sftp.html

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How to generate public key from Azure Logic App to connect to AWS S3 Bucket via SFTP-SSH connector

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