SFTP Connection

[CodersArcade]

I need to connect to clients SFTP which goes something like SFTP-Cloud have shared a file with me which i am guessing is a public key gies something like sftp-cloud ssh-rsa AADDDBBBBB..... so on. How do i connect to their SFTP?

how to ass their public key doe the format needs to be 

***BEGIN PUBLIC KEY? If yes how to convert? Any documents for reference. Thanks all  

[CodersArcade]

Anyone. I meant can I connect to client sftp with only their public key? 

[pavan-narayan]

Hello @CodersArcade  
Can you try below choose type as Public/private key pair