Public-key cryptography (encryption is a misnomer) is the process of creating two keys during the encryption of plain text, one private and one public.

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How do you create an AES XTS key?

I am interested in hacking around with Gluster cloud FS whose most recent beta uses AES with XTS only. It also requires openssl >= 1.0.1. The 1.0.1f Jan 2014 openssl (with 64 bit lib) install for my ...
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How to get GPG working with Outlook 2013?

My OS is Windows 8.1 Update 1 x64. I have Outlook 2013 and just installed GPG4Win (latest, 2.2.2, full version). When I now launch Outlook 2013, I still don't see any UI/options to setup certificates ...
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Finding sshd log file

I'm experiencing some problems with SSHD on my server. I'm trying to set up passwordless (pub/pv keys) authentication. It worked for my other servers, but not for this one. The SSHD agent adds my ...
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153 views

SSH rsa key works with external IP not internal IP

I am using rackspace cloud hosting. I have 2 servers behind a load balancer. Each server has an external IP and an internal IP. I want to setup a sync job that uses SSH to transfer files. I made ...
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After Updating to SHA2, private and public doesn't match

I've upgraded to SHA2 certificate, but after upgrading the new certificate key doesn't match my old private key. Public key has changed after updating and it doesn't match to previous private key. ...
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Can you extend the expiration date of an already expired GPG key?

Lets say I add an expiration date to a GPG/PGP key, then for some reason am unable to extend the expiration date of the key before its time is up. Assuming I still have access to the private key (and ...
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216 views

Errors generating gpg keypair

I posted this originally on stackoverflow, but was told that it was offtopic and this would be the better place to post it, so I am reposting it here and deleting my original topic. I have a rather ...
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Is there a tool like dm-crypt/luks using RSA encryption?

Is there a library/tool available for linux, similar to dm-crypt/LUKS using RSA encryption instead of symmetric ciphers? I want the "public side" to only be able to create these volumes, and the ...
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How to decrypt a message sent via Pidgin-Encryption?

A friend sent me an offline Google Talk message that was encrypted via Pidgin-Encryption. It didn't appear in my Pidgin logs because I wasn't logged in when it was sent, but I do have the encrypted ...
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How can I allow a user to connect to my OpenVPN by knowing their public key?

Given the public key of a remote user, I would like to run OpenVPN and allow that user to connect to my network. I only need to be connected to one remote machine at a time. The options outlined in ...
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How to sniff passwords remembered by applications?

Suppose someone forgets their password for a web application such as gmail, facebook or some other application installed on the system such as skype, but the web browser or skype still remembers the ...
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Is it safe to use the same RSA key pair at the sender and the recipient?

Most questions on the internet are about using the same certificate on multiple clients, what about using the same certificate between two servers communicating with each other for example? Would that ...
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why does public key used to authenticate ssh seem to expire after a while?

I want to ssh from client to server without a password, so I append client's public key to server's authorized_keys. While previously I needed a password, immediately after I do the above, I don't ...
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SSH keys cached remotely?

I wanted to install a new public key on a remote server. I created a keypair using ssh-keygen -t rsa on my Macbook, then added its public key to authorized_keys on the remote server. It is the only ...