PGP is short for "Pretty Good Privacy". It is a data encryption and decryption computer program that provides cryptographic privacy and authentication for data communication. PGP is often used for signing, encrypting and decrypting texts, E-mails, files, directories and whole disk partitions to ...

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2answers
126 views

How to properly transition from standard PGP keys to using subkeys?

When I initially set up PGP, PGPTools didn't prompt me to create separate subkeys, as explained in the article "Creating the Perfect PGP Keypair". Now that I've learned a bit more about PGP, I'd like ...
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votes
2answers
64 views

Is it possible that to sign a message with a PGP key in a way that leakes the key

Alice provides a software for signing messages. The software runs in a airgapped enviroment. The software is given the message that's to be signed and the private key. The software then produces a ...
3
votes
1answer
33 views

How to decrypt email with revoked key in enigmail?

Is it possible to decrypt a message which is encrypted with a revoked PGP key? I still have the private key, but Enigmail doesn't show me revoked keys neither does automatic decryption. Edit: I ...
2
votes
0answers
347 views

Emacs and EasyPG not performing public key encryption

I have a file which I edit and encrypt following this guide : http://emacs.wordpress.com/2008/07/18/keeping-your-secrets-secret/ I'm a noob as far as security goes and thought that the point of ...
1
vote
0answers
33 views

OpenPGP (RFC4880) - do you agree with my SimpleS2K (string-to-key) implementation?

Background: I'm writing a GPL Python OpenPGP to JSON parser which I'm testing on files generated with GPG 1.4.16. If given a passphrase, the parser will generate keys using the string-to-key methods ...
1
vote
0answers
93 views

Secure self-concealing symmetric encryption (non-verifiable decryption)?

From what I observed using standard encryption tools such as OpenSSH and GPG, the decryption only succeeds when the correct password/key is provided (or at most a few others, in case of collision). ...
1
vote
0answers
131 views

Location of passphrase digest in opengpg secring.gpg

I'm trying to understand the file format of the secring.gpg file. I couldn't really find any official documentation of the file format so I decided to create a new key-pair and use the S2K ...
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0answers
20 views

What user interface is most useful to users who use PGP Key Splitting, or other Shamir-based keys?

I am developing an application that uses Shamir-based key splitting, and am looking at various products and am looking for a user-friendly, possibly dynamic graph that helps users build and manage key ...
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0answers
49 views

Converting PGP2.x UIDs on a GPG key

I have a couple of keys which were created many years ago, before GPG came out. (But let's pretend there's only one key involved.) The key has a mix of GPG and PGP-2.x-style UIDs. I've made one of ...