cryptocard | Java API for credit cards cryptography | Ecommerce library

I make an API fetch which gets back this data:

I learned that it's not good practice to have a setState(() AND a FutureBuilder together. When I delete my setState((), I noticed that the isWaiting variable no longer updates into the MakeCards class and stays at True. But when I leave in my setState, even if it's empty setState((){ } then isWaiting properly updates to False as it should. I need help with understanding why that is and how I can update isWaiting to False inside the MakeCards while deleting my setState(().

I know this question has already been asked on other posts, but I couldn't find any satisfying answer.

I'm using the Renci.SSH (SSH.NET version 2016.1.0 in C#) to connect to SFTP. I have an SFTP server which I connect using an SSH key and password.

When I connect through WinSCP on my computer, it works perfectly. I would like to do the same from my C# code but I get:

Renci.SshNet.Common.SshAuthenticationException: 'Permission denied (password).'

My PPP file was generated by PuTTYgen and it seems that Renci.SSH doesn't support PuTTY format. Actually, using the ppk file as it is, I get a:

Renci.SshNet.Common.SshException: 'Invalid private key file.'.

So, I had to convert my .ppk to OpenSSH format using the PuTTY key generator Conversions --> Export OpenSSH Key using RSA.

Here bellow an example of the resulting .ppk file:

I'm using Renci SSH.NET to upload files to a server. I can do it easily with SFTP server IP, but when I try to set my server domain I recieve an exception

No connection could be made because the target machine actively refused it.

I am able to use both the IP and the full computer name with FTP and FTPS, but with SFTP I can only do it with IP. Is it possible to connect to SFTP through the full computer name? Here is my code:

I was trying to SSH into an Ubuntu machine using WinSCP from Powershell, upload a shell script and run it. In the script I had set -o errexit to make sure it stops when it fails. Accidentally I forgot to use sudo when running the script, so a command like chmod u=rwx,g=,o= some-folder failed as the SSH user was not permitted to do that. This was to be expected and I could see the script had terminated like it should.

From Powershell however, I was doing something like:

I am trying to automate the transfer of a file via SFTP using PowerShell. The SFTP connection requires public/private key and username/password. I am using WinSCP to do the transfer in PowerShell. After the authentication via the keys it fails right afterwards. It seems to have to do with Interactive mode being required. If I was using FileZilla to manually do this I have to do it in Interactive mode and type the password in after the keys are exchanged to get connected.

I have a scheduled job to perform secure file transfers daily through WinSCP. The flow starts with 2 ssrs file share subscriptions which drops 2 files in a local directory. Then the sql server agent job I scheduled kicks off a powershell script which initiates the winscp sftp transfer of the 2 files to the remote SFTP server.

The job and file transfers were all working fine and dandy for 2 months until randomly last week when the job started failing on some days (but not others). The logs show a cryptic network error "Software caused connection abort". I've checked winscp's support docs here https://winscp.net/eng/docs/message_software_caused_connection_abort, here https://winscp.net/eng/docs/message_unexpected_close here https://winscp.net/eng/docs/faq_connection_refused and other sources here https://www.hostingride.in/content/solved-network-error-software-caused-connection-abort-winscp-error-putty-keepalives

Based on suggestions found I:

a) Added an exception to windows firewall to allow winscp through.

b) Enabled "Executing dummy protocol commands" under Keepalives in WinSCP Advanced Site Settings

c) Increased the server response timeout and seconds between keepalives to 360 seconds each

None of these fixed the problem. And oddly the file transfer is not consistently failing every day. Running the job repeatedly (same code) fails usually but occasionally succeeds (see powershell screenshot attached)

If anyone is familiar with how to fix this issue please let me know. See log entry and powershell screenshot attached.

I am having difficulty setting up "SFTP Only" login with two factor authentication of "Public Key" and "Password".

I am running on Ubuntu 16 and using openssh-server.

Regular users are able to log in successfully using a Public Key and Password. However, my "SFTP Only" users are getting errors logging in.

vim /etc/ssh/sshd_config

Running a SSHD with following setting for SFTP connection: