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Category: Encryption

Creating a New CA (SHA-512, 4096-bit) with PKCS #11 Smart Card Storage and Subordinate CA

February 18, 2025April 19, 2026 Val

Today, I will walk through the process of creating a new Certificate Authority (CA) using a 4096-bit RSA key and SHA-512 as the signature hash algorithm. I will also store…

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Encryptionencryption mTLS RSA security SHA

Paperkey: How to backup your GnuPG keys on paper

August 13, 2018April 19, 2026 Val0 comments

To create a backup of your GPG Key, you may use one of the following commands paperkey –secret-key my-secret-key.gpg –output to-be-printed.txt Or using this if you have exported (not armored)…

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Linux Encryptionbackup encryption gpg paperkey

Reset your YubiKey to factory defaults using gpg-connect-agent

July 6, 2018April 19, 2026 Val0 comments

I’m using MacOS for my work, so here is how to reset your YubiKey using gpg-connect-agent. This is not a mine solution, I found this a while ago on github,…

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Encryption Uncategorized

Using YubiKey with GPG

January 28, 2018April 19, 2026 Val0 comments

Using Yubikey with GPG encryption Let me try to show my experience in using Yubikey as a Smartcard for storing signing and GPG encryption keys. There are a lot of…

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Linux DevOps Encryptiondecryption encryption gpg keys yubikey

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