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Is it possible to create GnuPG keys from a x509 cert/key pair?

I have a digital cert issued by my organization for signing email. It's imported into Thunderbird and the key and cert can be exported to a .p12 from within Thunderbird. I'd like to use the .p12 to ...
4
votes
1answer
105 views

Establishing trust between a device and a developer, TLS signal vs X.509, GnuPG (or both)

Let's say you wanted to implement a "secure sideloading" mechanism for your embedded device so that the device could establish trust with authorized 3rd party developers. Developers would have local ...
5
votes
1answer
2k 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 ...
9
votes
2answers
8k views

How to use a Yubikey NEO (or any OpenPGP card or GnuPG in general) to sign X.509 CSRs?

Since the Yubikey NEO can be used as an OpenPGP card (see here) with three 2048 bit RSA keys, I thought about creating a CA from one of its public keys. Since the private key cannot be extracted (...