Super User Stack Exchange
Super User Stack Exchange

Questions tagged [pgp]

PGP (Pretty Good Privacy) is a computer program for encryption and decryption of data that provides cryptographic privacy and authentication for data communication.

310 questions
141
votes
2 answers

How to manage GPG keys across multiple systems?

I'm new to using GnuPG and trying to understand how best to use it. I've reviewed Short, easy to understand explanation of GPG/PGP for nontechnical people?, but most guides explain PGP with a single-machine perspective. I want to use GnuPG on three…
Justin C
  • 2,491
  • 2
  • 16
  • 10
125
votes
4 answers

Where to upload PGP public key? Are KeyServers still surviving?

I want to upload my PGP public key on a public server. Till the time PGP was an independent organization, I heard a lot about KeyServers, but after Symantec acquired PGP, what is the future of these servers? Is there any other alternative way to…
RPK
  • 2,703
  • 7
  • 31
  • 41
123
votes
4 answers

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 the public key has only expired, not been…
IQAndreas
  • 3,727
  • 6
  • 29
  • 47
105
votes
3 answers

One GnuPG/PGP key pair, two emails?

I have two emails I use frequently, for both of which I'd like to use PGP keys generated/managed by GnuPG. I'd like to avoid creating a different key pair for each email, if possible, as that's unnecessary for my situation, i.e. I use the two emails…
Computist
  • 2,927
  • 6
  • 28
  • 32
57
votes
1 answer

Short, easy to understand explanation of GPG/PGP for nontechnical people?

Does anyone have a link to a good, but short (1-2 paragraphs) explanation of the benefits of using GPG/PGP signing and encryption for Email focused at non-technical readers? That is, why would someone care about email being signed? I've looked but…
jtimberman
  • 21,597
  • 12
  • 68
  • 77
54
votes
1 answer

Does the right half of the rsa public key matter?

In a public key file "id_rsa.pub" generated by ssh-keygen, does the part after the == matter? I ask because when I changed "[email protected]" to "root", it seems to still work. More generally, I am curious about what the purpose of that half is.
merlin2011
  • 1,855
  • 3
  • 23
  • 33
35
votes
4 answers

gpg remove passphrase

I want to remove the passphrase from gpg key after creating it. Why? . Because the tigase-kontalk documentation says so and I want to compile and setup my own version of this server . But am stuck at this point Create GPG key Create a GPG key for…
Dr Deo
  • 803
  • 3
  • 9
  • 14
34
votes
1 answer

ERROR: One or more PGP signatures could not be verified, arch linux

I recently switched to an arch based distro call Manjaro. I have problems installing some packages from the aur arch repository curl-7.54.0.tar.gz ... Passed curl-7.54.0.tar.gz.asc ... Skipped ==> Verifying source file signatures with…
nelaaro
  • 13,149
  • 30
  • 84
  • 111
31
votes
1 answer

What is a OpenPGP/GnuPG key ID?

I understand the utility of the key block itself, and of a hash of the key, but I don't know why additional information would be necessary, so I can't begin to guess the utility of an additional bit of information. Specifically, What does it…
Parthian Shot
  • 843
  • 2
  • 8
  • 23
28
votes
1 answer

How does S/MIME differ from PGP/GPG, for the purpose of signing and/or encrypting email?

In addition to the titular question, are the two technologies compatible? If so, under what circumstances? What are the relative benefits of the two technologies?
user11574
27
votes
1 answer

What file extensions should be used on GPG generated output?

In Linux file name extensions are irrelevant, but on a Windows system, many GPG users use GUI applications rather than the command line. They may want to be able to double click on an encrypted file, key, or signature and open it with their GPG…
IQAndreas
  • 3,727
  • 6
  • 29
  • 47
25
votes
1 answer

Are files encrypted with gpg compatible with pgp?

Are files encrypted with gpg compatible with pgp? What about the other way? I recently learned the very basics of the procedures of using gpg to encrypt and decrypt files. But I don't have a lot of knowledge or good understanding of cryptology…
qazwsx
  • 8,599
  • 24
  • 58
  • 86
24
votes
5 answers

Why does GPG/PGP by default use different keys for signing/encryption?

If you create a new GPG key, you'll by default get a signing-only master key pair and an encryption-only sub-key pair. pub 2048R/XXXXXXXX created: 2013-02-09 expires: 2014-02-09 usage: SC sec 2048R/XXXXXXXX 2013-02-09 [expires:…
Chaos_99
  • 918
  • 1
  • 12
  • 29
23
votes
3 answers

How do I create a PGP Key Revocation Certificate in Kleopatra

I was successfully able to create a PGP Key using Seahorse in Ubuntu's Passwords and Keys (13.04). I was also able to create a revocation certificate, if needed in the future, using the terminal in Ubuntu. My problem concerns doing this on a Windows…
rahi
  • 1,387
  • 1
  • 8
  • 19
23
votes
1 answer

PGP encrypt single message for multiple recipients

Is it possible to encrypt a message using PGP so that multiple recipients (each with their own public private keypair) can decrypt it? I'd like to email one message which can be decrypted by each person with their own keys.
ztnewman
  • 293
  • 2
  • 3
  • 5
1
2 3
…
20 21