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4
votes
1answer
51 views

Signing UIDs which do not belong to a RL person with full name

Sometimes I am asked to sign pseudonymous UIDs or see PGP keys which belong to organizations rather than single persons. These, by nature, do not contain the name of a real life person; hence there is ...
2
votes
1answer
17 views

Automatically finding and fetching signature paths from own key to target

This is a question about usage of Web of Trust. Let's suppose I've just generated a key pair and attended one or two Key Signing Parties. That gave me ~10 signatures on my public key, some of which ...
3
votes
1answer
34 views

Sign GnuPG master key with own X.509 certificate?

Can I use a trusted X.509 digital certificate to facilitate the expansion of my personal web of trust? To be more specific: Can I use my X.509 certificate to sign my personal GnuPG master key? Will ...
3
votes
1answer
35 views

Using the middle name instead of first name for OpenPGP?

I'm just getting started with OpenPGP. I've generated a key, talking to (very few) friends involved with the technology. But I have a concern: I go by my middle name (with all emails, friends, etc.) ...
1
vote
2answers
48 views

PGP Key Signing Robot DKIM Verified Emails

It occurred to me that DKIM verified emails, from major players (e.g., GMail), could open the door to more modern OpenPGP robot key signing authorities. The idea would be to ask people to send a key ...
1
vote
1answer
38 views

How is the signing of an OpenPGP public key realized technically?

I recently have signed the public OpenPGP key of a friend of mine. Curious to see, which effect this would have on the actual key, I compared the key before and after signing it. What I found was that ...
1
vote
1answer
36 views

Are PGP/GnuPG trust information transferred to key servers?

When signing a key X in the PGP Web of Trust model, I assign the key full validity. Other people who have my key in their key ring can regard X as valid as far as they fully trust me (owner trust). ...
5
votes
2answers
137 views

Why don't PGP keyservers enforce double-opt-in?

One thing that I found out when starting using PGP: When I uploaded my keys to the SKS keyserver, the keyserver did not take any action to verify that I am who I claim to be. Since a PGP key contains ...
0
votes
1answer
54 views

Web of Trust: What is “signatory trust”?

I am learning about the Web of Trust and how to use it. However, I have some issues to fully grasp the concept of Signatory Trust. What is an easily understandable definition of signatory trust? An ...
6
votes
1answer
172 views

Help - Somebody stole my OpenPGP key ID, what can I do?

I received a key transition statement because somebody found himself in the exact same situation described here. This issue will target more and more OpenPGP users in future, probably even all of ...
3
votes
3answers
106 views

Email Encryption

I'm hoping someone can point me in the right direction. If I wanted to implement email encryption within an organisation what would be the best way? I've been searching the web tonight but all my ...
2
votes
2answers
286 views

GPG Web-of-Trust Level [duplicate]

(and really sorry for my english) I have a question about Web-of-Trust of GPG. Let's say A and B signed each other's public keys and B and C signed each other's public keys. In this case A can trust ...
2
votes
1answer
160 views

Is an anonymity network like Tor viable on top of the GPG web of trust?

The web of trust is a graph where the vertices are GPG users (actually, their keys) and the edges are cross-signatures. If we put issues of owner trust aside and assume that all participants only sign ...
1
vote
1answer
264 views

What is the difference between “unknown” and “undefined” trust?

When you trust a GnuPG key, you can choose one of these five options (and I'm assuming the same options exist in other OpenPGP tools): 1 = I don't know or won't say (undefined) 2 = I do NOT ...
3
votes
2answers
914 views

What is the difference between “full” and “ultimate” trust? [duplicate]

When you trust a GnuPG key, you can choose one of these five options (and I'm assuming the same options exist in other OpenPGP tools): 1 = I don't know or won't say (undefined) 2 = I do NOT ...
3
votes
2answers
253 views

Is the PGP Web of Trust / Keyserver infrastructure permanently broken?

I love the idea of decentralized trust, the web of trust, and the fact that anyone can run their own keyserver and isn't beholden to a centralized point of failure. But does the decentralized ...
4
votes
1answer
40 views

safely changing distribution, is there a strategy to get an distro iso image untampered?

I can check that an Ubuntu iso file is indeed untampered using the public keys already present and trusted in my Ubuntu system. Now I want to switch from Ubuntu to Arch and I wonder how I can start ...
5
votes
3answers
238 views

What are you saying when you sign a PGP key?

When you sign a PGP/GPG key, what exactly are you saying to everyone who sees your signature? Are you validating the person, or the email address? To explain what I mean, take the following two ...
6
votes
3answers
267 views

Why can't PGP/GPG Web-of-Trust be automated?

We heard lots of complaints about hard to use crypto tools, and recent ideas of Google how to fix this. I had another idea about this which seems quite obvious, but couldn't find anything about it on ...
3
votes
3answers
691 views

“Web of trust” for self-signed SSL certificates?

SSL certificates, generally speaking, use a "chain of trust" model - a trusted certificate authority (CA) gets proof that a company such as Amazon owns amazon.com and issues an SSL certificate. ...
31
votes
2answers
3k views

If I sign someone else's key and later decide it was a bad idea, is it possible to un-sign it?

Let's say that I sign someone's key and then later decide that was a bad idea - either it was a bad idea at all, or I should have signed it with a different level of trust. Is it possible, both in a ...
2
votes
3answers
938 views

What is the web of trust?

I'm studying network and system security and I came across the phrase "web of trust". From Wikipedia: In cryptography, a web of trust is a concept used in PGP, GnuPG, and other ...
0
votes
1answer
109 views

Why has Convergence stalled out? [closed]

Convergence is a well-thought out system to replace certificate authorities built by Marlin Moxiespike back in 2011. Since it's debut, it seems to have largely stalled out, with no additional major ...
3
votes
1answer
266 views

Utility of multiple signing subkeys when we're restricted to a single encryption subkey in GnuPG (PGP)

As I understand it, GnuPG allows the creation of multiple subkeys, but multiple encryption subkeys are problematic because it's not clear which encryption subkey someone should use when sending a ...
1
vote
2answers
280 views

Using 1-day expiration GPG keys only… any disadvantages?

From the thread Does GPG key expiration add to security? , we know that the faster the keys expire, the greater our security. The minimum expiration for a GPG key seems to be 1 day. Thus, isn't it ...
5
votes
1answer
1k views

Is is typical to create both x509 and OpenPGP key pairs?

I'm looking into increasing my use of signed and encrypted "things" - LibreOffice Documents, Off-the-record chat, PDFs, emails, etc. I'm finding that some things only support x509 format-certificates, ...
2
votes
1answer
106 views

Are there negative influences in the Web of Trust? If not, are there theoretical alternatives?

Suppose I encounter a trusted PGP key that isn't really who they say they are. I don't want to sign their key and promote that entity. Can I somehow show my dissidence from the trust that everyone ...