2
votes
0answers
19 views

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 ...
0
votes
2answers
31 views

Is there a way to revoke a GPG encryption key?

OK, so as I understand it, the key revocation mechanism is used to revoke a signing key in your web of trust: so you say to other GPG users that your previously-used identity has been compromised, and ...
0
votes
1answer
47 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 ...
0
votes
1answer
88 views

What is the role of cakey.pem and cacert.pem in addition to .key and .crt based encryption

I have .key file which holds the private key data, .crt file which would be certificate with public key and, to my knowledge, that's it for public key encryption, right? Not exactly. In order to ...
1
vote
1answer
177 views

Signature Verification using OpenSSL

I have been experimenting with OpenSSL and OpenSSH and I have been unable to sign and verify using RSA key pairs. I did the following Generated key pairs: $ ssh-genkey -b 2048 -t rsa ...
5
votes
1answer
1k views

How can I use GnuPG with ECDSA keys?

I'd like to generate an ECDSA (rather than RSA, DSA, or ElGamal) key using GnuPG, and use it as I might otherwise use an OpenPGP-compatible master key. I've read that gpg2has support for ECDSA keys, ...
0
votes
2answers
300 views

GPG4WIN Keys and Transferring them

I have installed www.gpg4win.org and have generated a keys that will allow me to both sign and encrypt files. On windows it uses the (KDE) / Kleopatra Certificate Manager - Version 2.1.0. What is the ...
1
vote
1answer
731 views

gpg: import failure key xxxxxxxx: no valid user IDs

i am getting this error while importing a public key on gpg (GnuPG) 1.4.2 gpg: armor header: Version: GnuPG v2.0.14 (GNU/Linux) gpg: pub xxxxx/xxxxxxxx 2012-05-25 abcd xyz <email@address.com> ...
81
votes
4answers
44k views

How can I use encryption with Gmail?

I'm currently reading Cory Doctorow's novel Little Brother which includes a part about encrypted messaging, and even wrapping messages first in my private key and then your public key. I'd like to ...
0
votes
2answers
202 views

Is there a user friendly desktop software that encrypts given text using PGP or GPG? [closed]

I was searching for a simple software that encrypts given text using either PGP or GPG. The alternatives I have found so far are very complicated and hard to operate. Are there any encryption ...
22
votes
4answers
14k views

How does SSH encryption work?

I've read about generating 2 keys (private and public) on client host and copying the public key to the server host. As I understand it, (correct me if i'm wrong): The server encrypts data with the ...
1
vote
1answer
2k views

How does gpg handle multiple keys in a keypair?

As I understand it, keypairs used with gpg generally have more than one associated key: one for signing and one for encryption. How are these multiple keys managed when using gpg (to push to a ...
4
votes
1answer
154 views

When I encrypt a message with my public key, can I read it with the same public key?

On a process that is using asymmetric encryption(such as ssh), when I want to send a message to someone using my public key, can I decrypt and read this message with my public key (the same that I ...
2
votes
4answers
470 views

Encrypt tar file asymmetrically

I want to achieve something like tar -c directory | openssl foo > encrypted_tarfile.dat I need the openssl tool to use public key encryption. I found an earlier question about symmetric ...
1
vote
1answer
68 views

Creating encrypted database for work

My boss posed this problem to me: Encrypted: We need an encrypted database for miscellanious passwords we use at work that are currently only in people's head. Easily accessable: Someone needs to be ...
4
votes
2answers
322 views

How can I get a new / non-technical user to verify my GnuPG / PGP signed email?

I'm looking for a web front-end or some easy way to get a user who's never been exposed to cryptography / digital signatures etc. to simply copy/paste my GPG signed (not encrypted) email and specify ...