SFTP profile fails to run with ED25519 key pair

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SFTP profile fails to run with ED25519 key pair

Postby probspot3 on Mon Jun 26, 2017 12:19 pm

Hi,

I'm trying to set up a backup profile to an SFTP destination. I'm using the public key authentication. According to advanced SSH settings of Syncovery, it does support ED25519 public keys and key exchange algorithm. However, the profile throws the following error when running:

Using client certificate "backup_ED25519" with D:\mypath\id_ed25519.pub and D:\mypath\id_ed25519.ppk
Error loading public key D:\mypath\id_ed25519.pub: Invalid public key
Error loading private key D:\mypath\id_ed25519.ppk: Unssupported algorithm
SSH authentication failed, type=2.TRUE
SSH error 114.

I tried to generate the keys both using "ssh-keygen" on Linux and the recent snapshot of PuttyGen on Windows. Both don't work. Am I missing something here?

By the way, there's also a typo in "Unssupported".

Thanks
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Re: SFTP profile fails to run with ED25519 key pair

Postby superflexible on Wed Jul 05, 2017 4:05 pm

Syncovery currently supports Curve25519 but not Ed25519.

I will fix the typo.
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Re: SFTP profile fails to run with ED25519 key pair

Postby superflexible on Mon Oct 21, 2019 3:49 am

Hello,
I have finally released the first beta version of Syncovery9, which
includes a new SFTP library with dramatically increased throughput.
It may also be able to accept these keys.

https://www.syncovery.com/syncovery9/

On the Internet/FTP dialog, you need to choose
Implementation: TGPuttyLib

It should be able to work with all keys that Putty can use.
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