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.
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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 ...
57
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1
answer
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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 ...
137
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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 ...
106
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3
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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 ...
23
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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 ...
18
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1
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gpg2 asking for passphrase when importing secret keys
I am trying to transfer my gpg secret keyring from gpg1 (1.4.21) to gpg2 (2.1.15) using
gpg2 --import ~/.gnupg/secring.gpg
gpg2 is asking for the passphrases of all the secret keys in the keyring.
...
10
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3
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what is PGP public key block?
There's PGP public key block posted on some websites (eg. http://phrack.org/index.html).
It's not hex code. it uses much more alphabet characters. What is it?
Why is this information posted? how can ...
1
vote
1
answer
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Best way to signal no longer used (lost) key
I have an old PGP key for which I don't have the secret anymore, nor the revocation certificate, and when I created the key I did it without expiration date.
So I know, I have to move on, and so I ...
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1
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Remove unnecessary under-the-hood GPG public key cryptography
Background:
Some existing programs, such as git-annex (git-annex encryption) and pass, delegate cryptography to GPG, "a complete and free implementation of the OpenPGP standard". More ...
23
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2
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How can you un-revoke PGP key in GPG?
Whilst playing with GPG (and trying to figure out a safe way to store my revocation cert so nobody else could use it), I accidentally revoked my PGP key.
The revocation was only local; not sent to a ...
21
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3
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How do I verify a PGP signature?
What GUI (no command line) software or websites can I use to verify a PGP signature?
If I have a message like this
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Because anyone can claim to be me. ...
16
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3
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Public/Private key locations with Enigmail and Thunderbird on Windows
Sorry if this is a simple answered question, I just cannot find what I'm looking for.
I'd like to find the location of my public/private key combinations on my Windows machine that I made through ...
15
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1
answer
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How to migrate my old PGP key to a more secure algorithm?
I have an old PGP using old GnuPG algorithm defaults. According to Best encryption and signing algorithm for GnuPG: RSA/RSA or DSA/Elgamal?, those algorithm settings are no longer sufficient, so I ...
12
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2
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How do I manage multiple e-mail addresses with GnuPG?
I feel like this is a question that should have plenty of coverage, yet I found nothing that explained this to me in a way that I understood.
It may be (and feels like it) that I misunderstood ...
12
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2
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PGP (GnuPG) - what was the original filename?
John wants to send 1.txt to Paul.
He encrypts it. Now the file is named myFile.pgp, and he sends it to Paul.
Paul gets the file.
How (if possible) can Paul know what the original file name (1.txt) ...
11
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2
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How to use gpg and SSH together? [duplicate]
Possible Duplicate:
Are GPG and SSH keys interchangable?
How to use gpg and SSH together?
I know the basic procedures of 1) using gpg to encrypt and decrypt text files and 2) generating and ...
8
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1
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How to use GnuPG to get the smallest possible output (symmetric encryption)?
I'm trying to produce very small OpenPGP-encrypted files that can be embedded into QR codes.
However, in comparison to for example OpenSSL, GnuPG seems to produce very large results for a simple ...
8
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2
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How do I display the usage flags for my encryption keys in a less hackish way?
I am trying to educate myself on the use of encryption keys and I've been experimenting with this old Linus Torvalds’ key that I found 956EB7BF449FA3AB.
I am interested to display the usage flags but ...
7
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2
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What is the relationship between an OpenPGP key and its subkey?
I'm coming from using plain old RSA with OpenSSL for all my asymmetric encryption needs, which I learned fairly well, but I'm having a bit of a hard time wrapping my head around the OpenPGP protocol.
...
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if one doesn't care about protecting a gpg secret key, is it still as secure as using gpg --symmetric?
Each of Alice and Bob is using gpg just to protect his/her own personal files and not using it as a way to send encrypted text to others. Alice has generated a key (gpg --gen-key) that she uses to ...
4
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How should GnuPG's `--desig-revoke` command be used?
How should the GnuPG command --desig-revoke be used, and in which cases should you use it? According to the manual:
--desig-revoke name
Generate a designated revocation certificate for a key. ...
4
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1
answer
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How to generate the revocation certificate after being made a revoker with GnuPG
I read the "How should GnuPG's `--desig-revoke` command be used?" question/answer, so now I know when to use the --desig-revoke.
So, I have two different private keys -- one at work (WORKWORK), ...
4
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2
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How can you let mutt encrypt mails in the sent-mail folder?
When i sent an encrypted mail, i was surprised that the copy in sent-mail was not encrypted.
Checking with a testmail, the mail is sent encrypted, but the copy in the sent-mail folder is plain text, ...
3
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2
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How can I perform PGP encryption and decryption method using openssl commands
I have a PGP public key of B. Now A wants to send an encrypted message to B using his PGP Public key by using PGP method. How can I do this with OpenSSL?
Edit
I have seen wiki page for PGP method ...
2
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1
answer
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How to convert gpg4win's binary to ascii, with Notepad++
I can reliably convert gpg4win's ascii to binary using Notepad++ option "Base64 Decode" (credit: James K Polk). Works every time.
But when I attempt the reverse, i.e. convert binary to ascii, it ...
2
votes
1
answer
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How to make thunderbird automatically encrypt emails if possible?
When I start to compose a new email in Thunderbird, I want it to automatically enable the Encrypt button after I type a recipient's email address into the To field, if I have that recipient's PGP key ...
2
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4
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GPG public key created with GnuPG is rejected by MS Outlook 2010, why?
I created a GPG keypair with GnuPG on the CentOS 7 command line and I have exported the public key into a .asc file and successfully used that public key to encrypt emails sent from another email ...