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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How much information is included with a GPG signature?

Let's say you verify someone's signature with GPG: $ gpg --decrypt statement.txt.sig "I am not a crook." gpg: Signature made 17 Nov 1973 9:31:50 AM CDT using RSA key ID 92861D99 gpg: Good signature ...
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PGP Public Key expiration GPG

I'm in the process of importing a public key from a business partner. We have always use GPG and never had a problem. I’m importing this key using: gpg --import "FileName.asc" gpg: key AC260214: ...
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How to update PGP public key after new uid is added?

I have a PGP keypair to which I just added a new uid. Is the previously exported public key and private key still valid? If I export a new public key with armor, it does look different and longer ...
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Associate specific PGP subkeys with specific UIDs

It seems to me like PGP keys contain a "collection" of UIDs and also contain a collection of subkeys. Moreover, there doesn't seem to be a way to add comments to a subkey. Is there any way for me to ...
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Use RSA keypair for PGP encrypt and decrypt

I use PKI smartcard. I generated public and private key on my smartcard and store keys in it. I want use these keys for PGP encryption and decryption. However, I don't know Can I make this?
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Enigmail stopped working: KEYEXPIRED/SIGEXPIRED

Since a recent update I cant send encrypted mail with thunderbird and the enigmail plugin anymore. Whenever I try to send the mail, and enter the passphrase for my key, I get the following error ...
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How can I fix a corrupted PGP file?

I've encrypted a file with PGP but for "security reasons" I thought it would be good to damage the header and add some extra bytes so that even if someone finds it it won't know for sure it's a PGP ...
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How to generate an OpenPGP Signed Message with GPG?

In RFC 4880, there is section 11.3 which specifies the different formats an OpenPGP Message block can have: 11.3. OpenPGP Messages An OpenPGP message is a packet or sequence of packets that ...
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What is introducing quoted-printables into my PGP-encrypted emails?

I've set up PGP email encryption on two computers using Enigmail and Thunderbird. One is running Mac OS X, and the other is running Arch Linux. Everything functions fine from within Thunderbird on ...
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pgp pass phrase not working in enigmail but does in command line

Hi I've been strugling with this issue of pass phrase and due to the amount of mail I have encrypted, I can't seriously change my pass phrase. Here's the issue : Enigmail don't recognize my pass ...
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How to create new PGP key?

I'm using GNU GPG. I want to replace my old keypair with a new one, and I have a couple of specific questions as I haven't done this before! My keyring currently contains both the new and old ...
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58 views

Trying to verify file signature in GPG4win: Not enough information to check signature validity

I've downloaded enigmail for Thunderbird and I'm trying to verify the PGP signature with GPG4win. I imported the public certificate, certified it with my own, downloaded the Open PGP signature, and ...
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PGP: encrypt all parts as one or each separate

When I receive emails in my K9-Mail on Android with APG installed some mails I can press "decrypt" right away inside the email, to read it, and some others, I only get the encrypted message as an ...
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35 views

Is it possible to setup Enigmail for Thunderbird, so that signatures are sent as attachments?

In a PGP sign only email, I find that when I use Enigmail, the signature is part of the body of the email and is pretty painful to read on say a browser. I have seen others send signed email where the ...
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102 views

Bad sector with PGP Whole Disk Encryption on MacOS X Mountain Lion

I have a MacBook Air from late 2012 that is running Mountain Lion. I also have PGP Whole Disk Encryption 10.2.1 installed and use it. On Monday night, I suddenly encountered a bad sector and the ...
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121 views

What is a GPG key ID?

After some google-fu and poking around on here, I'm still not clear on this. I understand the utility of the key block itself, and of a hash of the key, but I don't know why additional information ...
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84 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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32 views

What is the default symmetric algorithm for encrypting the secret key in GnuPG 1.4.11?

When generating a GPG key, you are asked for a pass-phrase that will correspond to the private key (or keys to be exact). My question is what is the default crypto algorithm for encrypting your key ...
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254 views

How to use PGP private key with K-9 Mail on Android 4.x

Where do I copy which file from my OpenPGP installation on Ubuntu 14.04 on my Android 4.0 device to be able to import it into APG which is the en-/decryption provider I use in the K-9 Mail client?
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409 views

Use PGP key with MS Outlook 2010

How do I use a PGP/GNUPG key to encrypt/decrypt emails sent using MS Outlook 2010? I understand the basics of PGP/GNUPG, and have a public/private key setup. I just want to know how to use this with ...
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29 views

symantec PGP - reformat the disk?

If a machine has it's whole disk encrypted with Symantec PGP - the one that brings up the grey screen for a password before the OS boots - can I reformat the disk and reinstall the OS without removing ...
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34 views

Setting up PGP on Win7

I got a problem getting PGP to work properly on win7, 64bit. What i want is a automatic encryption, if i have the public key of the recipient and an permanent decryption of received mails. As far as i ...
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48 views

PGP Decryption with plain text key only.

I have been given a gpg file and a plain text key. I was expecting an .asc file. What would the syntax be to decrypt this file with a plain text key. For example: pgp --decrypt filename.gpg keyname ...
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108 views

GnuTLS test 'chat' equivalent of OpenSSL s_client s_server

How can I set up a test encrypted "chat" with GnuTLS, equivalent to the OpenSSL s_client and s_server using GPG credentials? I would like to tell GnuTLS-serv and -cli to use keys generated with GPG ...
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Can I sign my emails with both S/MIME and PGP/GPG?

And if it possible, is there any benefit from doing so in one order or the other? signWithSMIME(signWithPGP(message)) versus signWithPGP(signWithSMIME(message)) Also, are there any reason not to ...
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How can I change the time my PGP Desktop passphrase stays cached?

I have a PGP Desktop 10.0.0 installation on Windows 7 that prompts me for my passphrase far too often - is there any way I can increase the timeout for this? I would prefer to only have to enter the ...
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105 views

How do I find my public key on my Mac?

I'm using an OS X machine, and I've noticed that in the process of setting up an automated backup a long time ago, I must have also installed a Mac implementation of OpenPGP (though I unfortunately ...
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86 views

How can I determine what encryption algorithm someone used if I have their PGP Key ID and Fingerprint?

I just learned how to lookup a user's info on pgp.mit.edu. Is there some way to determine what algorithm the user is using?
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313 views

Import PGP key to windows user for SSIS

I have used Kleopatra to generate a pgp key. In SQL Server I am running an SSIS package that should decrypt files using the above key. The SSIS packages runs as ImportFiles which has the identity of ...
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2answers
505 views

Encrypt file using PGP/GPG having multiple recipients [duplicate]

I have used GPG for some time and know a little about the inner workings. For example I know how to encrypt a file with your public key so only you can open it with your private key, neat. But ...
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stdout error using cross-compiled gpg

I compiled gnupg(ftp://ftp.gnupg.org/gcrypt/gnupg/gnupg-1.4.16.tar.bz2) for an armv5l processor using the ulibc cross compiler ...
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pgp semaphores management on linux

I've an issue with pgp semaphores management. As far as I see pgp (version 6.5.8) creates 4 semaphores while starting to encrypt the file but only 2 of them are then destroyed at the end. To ...
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How to verify a digital signature in pgp?

I am very inexperienced with cryptography, please answer using minimum technical terms. I encountered this site. The person claiming to be the owner of this site published his signature in pgp to ...
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PGP encrypted mails

I am using Thunderbird with EnigMAIL, have my own keys generated, and downloaded the receivers public key. Now when I send the e-mail, I understand that my system encrypts the message using THEIR ...
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616 views

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. ...
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GPG: Different trust “categories”

I'm getting started with GPG and sent my key to the PGP Global Directory. When I verified my email address, they signed my key, and I've got a question. In one case, I might not really care about ...
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300 views

unable to decrypt certain files with secret key pgp 6.5.8, any advice?

Ok so I do some stuff for a client of ours that requires me to decrypt some of their suppliers messages, the thing is, something weird happened the other day and I can only decrypt some files with an ...
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84 views

GnuPG — encrypt already signed message

I'm working on a program that encrypts email after receiving so that at least it can be stored encrypted on the receiving mail server (although still would be transmitted in plain text). While it is ...
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340 views

How to restrict the usage flags for primary key-pairs in OpenPGP certificates?

More than one time I read recommendations to use the primary key-pair in my OpenPGP certificate only to sign sub-key-pairs and not for general daily use (even to keep the private key stored on a ...
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625 views

Windows 7 slowly freezing (app by app)

I think this is different from other "win 7 freeze" questions. :) I consider myself pretty experienced user but this is just too much for me. Let me explain what happens: Some program freezes ...
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432 views

Encrypting a document with multiple keys, and making people accountable for those keys

Hypothetical here. You have a highly sensitive file that you don't want to become public ever, other people also don't want it to be public. To reduce likelihood of being murdered you publish an ...
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248 views

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, ...
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110 views

How to export PGP key (in clear text?)?

I created a set of PGP keys in Kleopatra using GPG4Win. I want to use my private and public keys to encrypt and decrypt emails with this Chrome extension: ...
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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 ...
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186 views

How to show (for copy&paste) a secret GPG/PGP key without creating a file

I need to access my secret GPG/PGP key to copy/paste it into another application. How do I show my secret key without generating too much traces of it? I only know of the export command to gpg (or ...
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What are the advantages / disadvantes of using a PGP key without email address? [closed]

Can a PGP-Key without an e-mail address be an advantage? Reasons, why this might be a good idea: - Avoid SPAM on the address - i am using many different E-Mail addresses, too many to add them all as ...
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4k views

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 ...
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Scan for Unencrypted Data

I need a program that scans for unencrypted files. The files are encrypted with PGP, GPG, and WinZipAES256, so the program needs to be able to recognize these formats as encrypted. Since I need to ...
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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 ...
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608 views

Un-revoke PGP key

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 ...