Questions tagged [public-key-encryption]

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Automating SSH authentication to GitHub - what should ~/.ssh/config file look like?

I'm trying to automate logins to GitHub using a private key, so that I can do "git pull/add/commit/push" from a BASH script. If I put this in ~/.ssh/config, it works: Hostname github.com User git ...
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0answers
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Is key generation algorithm(RSA/DSA) should always same as key exchange algorithm (RSA/DSA) for communication?

I have generated keys(public and private ) using SSH 2- RSA using putty key generator and configured public key in bitvise SSH server. when i am trying to connect it with using key exchange : RSA ...
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1answer
1k views

Encrypting properties with “eyaml edit” without a private key?

I would like to use eyaml edit to edit my Puppet/Hiera configuration files. My configuration files are a mixture of encrypted and plain text content. I want to use eyaml edit to encrypt certain ...
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2answers
1k views

How to tell SFTP which public key to use?

SFTP has an option "-i" to set the private key to use for public key authentication. However, there does not appear to be an option for which matching public key to use. Surely it must need this to ...
0
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1answer
242 views

Dovecot (scrambler-plugin) mysql password & user query fails

I currently try to update my mailserver to encrypt all mailboxes, using the posteo scrambler plugin. I have the following mysql DB: mysql> describe accounts; | Field | Type | ...
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1answer
11k views

SSH public key not Working - No supported authentication methods available

I'm trying to allow another developer to connect to a our ubuntu server and they are getting the below error in FileZilla. Disconnected: No supported authentication methods available (server sent: ...
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1answer
88 views

Protecting wired LAN from packet sniffers

How one encrypts traffic in wired LAN segment? Can IPv6 in combination with IPSec be configured for IKE/ISAKMP authentication? OR Will I drown in configuring appropriate IKE host-to-host rules for ...
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2answers
314 views

openssl smime message signing: why do I need a -certfile key?

Here is how one should sign a message with openssl smime? according to the docs openssl smime -sign -in in.txt -text -out mail.msg -signer mycert.pem \ -inkey mykey.pem -certfile mycerts.pem But ...
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2answers
57 views

About digital signatures. Are they really secure? [closed]

Let's suppose I want to send you an encrypted and signed message, to demonstrating authenticity and integrity, together with the natural security of asymmetric key cryptography. The procedure is, if I'...
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1answer
1k views

GPG Encryption: Am I using the right keys?

I have a process to encrypt a bank file using OpenPGP (via BouncyCastle) and SFTP the file to the bank for financial processing. They sent me a public key file, which I examined the key using the ...
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1answer
5k views

Why i am getting falied attemps inspite of having public key logins in centos

I am using amazon ec2 and i have public key encryption. I was checking the /var/log/secure file and i get this Jul 17 21:14:18 server sshd[26590]: Excess permission or bad ownership on file /var/log/...
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1answer
2k views

Is there a way to see which groups/users have access to an RSA key container?

I used aspnet_regiis to create an RSA key container (machine container). I want to secure it and I know I can use the -pa and -pr commands to specify access. But is there a way to see which ...
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1answer
183 views

Connecting to a remote server using SSH from a Mac

I have generated a public key file (id_rsa.pub) and a private key file (id_rsa) and placed them in my ~/.ssh folder According to the server admin, he has already added "my key" to the server for ...
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1answer
37 views

How to provide encryption across file, folder, and email for small company

I'm the 1/2 time IT person for a small company. We run a MS environment using a Server 2003 Domain Controller, MS Storage Server 2003, and Exchange 2003. It finally occurred to them that I as an ...
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4answers
19k views

sftp and public keys

I am trying to sftp into an a server hosted by someone else. To make sure this worked I did the standard sftp user@sftp.xxxxxx.com i was promted with the password and that worked fine. I am setting ...