#12461 closed Bug report (fixed)
Unable to load Putty PPK Private key for SFTP connection while same works on CyberDuck
| Reported by: | Selva | Owned by: | |
|---|---|---|---|
| Priority: | normal | Component: | FileZilla Client |
| Keywords: | ssh, argon | Cc: | Selva |
| Component version: | 3.54.1 | Operating system type: | OS X |
| Operating system version: | 10.15.7 |
Description
The newly generated RSA 2048 key on Putty in Windows, and Mac is not loading on CyberDuck.
Steps:
- Generate a private key using PUTTY
- Open FileZilla
- Site Manager > New Site
- Select Logon type as 'Key file'
- select the attached PPK file from the ticket.
FileZilla will not accept the key nor display an error message. The same key works fine with https://cyberduck.io/
Attachments (1)
Change History (10)
by , 3 years ago
| Attachment: | id_akamai_sftp_key_temp.ppk added |
|---|
comment:1 by , 3 years ago
The key file format is too new. Please try the previous version of PuTTY.
comment:2 by , 3 years ago
ok - we will try that workaround. Any idea when the issue will be resolved?
follow-up: 5 comment:3 by , 3 years ago
In the latest version of PuttyGen, Go to Key in the top menu select Parameters for saving key file select the radio button for PPK file version 2 and press ok.
Then you can import the key and save as ppkv2 or create new keys in the old format.
comment:4 by , 3 years ago
| Keywords: | argon added |
|---|
comment:5 by , 3 years ago
Replying to ocephaso:
In the latest version of PuttyGen, Go to Key in the top menu select Parameters for saving key file select the radio button for PPK file version 2 and press ok.
Then you can import the key and save as ppkv2 or create new keys in the old format.
Thanks, good info here. I didn't know you could simply tell keygen to use the old format for now.
comment:6 by , 3 years ago
Good day,
Is there any plans to update Putty's components to support PPK v3 private key format?
Other popular FTP/SFTP apps already implemented it:
Cyberduck v8.0.0 (27.10.2021)
WinSCP v5.19 (25.11.2021)
follow-up: 9 comment:7 by , 3 years ago
I did a little digging and it looks like PuTTY PPK v3 was added in FileZilla 3.55.0:
- PuTTY 0.75 is where PPK v3 was introduced ("Upgraded private key file format to PPK3")
- FileZilla 3.55.0 is the first version that incorporates PuTTY components >= 0.75 (specifically beginning with PuTTY 0.76 starting with commit 10309)
I also empirically determined that FileZilla 3.55.0 successfully uses PPK v3, but FileZilla 3.54.0 does not.
comment:8 by , 3 years ago
| Resolution: | → fixed |
|---|---|
| Status: | new → closed |
comment:9 by , 3 years ago
Replying to Nalyzer:
- FileZilla 3.55.0 is the first version that incorporates PuTTY components >= 0.75 (specifically beginning with PuTTY 0.76 starting with commit 10309)
Thank you for investigation.
Looks like you're right.
In the current version (3.57.0) PPKv3 keys work.
But I am extremely surprised that such important change was not somehow highlighted in changelogs.
Most likely, this change was marked as "Updated SFTP components" in 3.55.0-rc1 (2021-07-02) update, but without analyzing commits it would be impossible to even guess what is included in this "update".
I hope in the future such important changes will be more clearly marked in changelogs .
privatekeyfile