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Aug 31, 2018 · OpenPGP keys have 3 components: a master key, subkeys, and user ID(s). The private portion of the master key proves that you are the owner and have authority over creation and revocation of subkeys. The master key. The GPG master key will be used use to generate subkeys that will go on the Yubikey. gpg: using subkey XXXX instead of primary key YYYY Why would that be? I've noticed that when they send me an encrypted file, it also appears to be encrypted towards my subkey instead of my primary key. For me, this doesn't appear to be a problem; gpg (1.4.x, macosx) just handles it & moves on. Subkeys need only be self-signed (which is automatic). Trust from external signatures is provided transitively. (Edit - 19 Apr 2015) gpg automatically uses the newest subkey to sign/encrypt. Some Terms. It’s best that you have an understanding of data encryption and data signing using public key cryptography before you read this.

alice% gpg --output doc.gpg --encrypt --recipient [email protected] doc The --recipient option is used once for each recipient and takes an extra argument specifying the public key to which the document should be encrypted. The encrypted document can only be decrypted by someone with a private key that complements one of the recipients' public keys. Example session log. Here is an example session log to create newer ECC keys for GnuPG. At first, we should have LD_LIBRARY_PATH defined. And it is better to kill existing gpg-agent because it doesn't run with LD_LIBRARY_PATH defined. gpg --import ${mykeyid}_subkeys.gpg gpg --import ${mykeyid}.pub Make sure to transport the 'mykeyid_subkeys.gpg' file securely since those subkeys can encrypt and decrypt content. Keybase. Keybase.io aims to make life with GPG easier. It does a really good job but it encourages what I consider bad behavior in key management. selecting explicit subkeys to export requires a ! after the key id, for example (given 0xdeadbeef is your subkey ID) gpg --export-secret-subkeys 0xdeadbeef! Possible solutions to your problem are: Use GnuPG 2.1 (then you can merge the exported individual subkeys during import).

A few weeks ago I created my new GPG/PGP key with subkeys and a few people asked me why and how. The rationale for creating separate subkeys for signing and encryption is written very nicely in the subkeys page of the debian wiki.
Sep 30, 2017 · Generating the master key. The master key must be generated using the advanced mode, because by default when a new master key is generated, also a new subkey is created with all the capabilities (Authentication + Signing + Encryption), while we want something different. Note: PGP keys up to 4096 bits are only supported in YubiKey 4 models.

GPG subkeys marked with the "authenticate" capability can be used for public key authentication with SSH. This is done using gpg-agent which, using the --enable-ssh-support option, can implement the agent protocol used by SSH. Requirements. A working gpg2 setup is required. It may be possible to use gpg 1.4 but with gpg-agent compiled from gpg2. The qubes-gpg-client-wrapper script sets the QUBES_GPG_DOMAIN variable automatically based on the content of the file /rw/config/gpg-split-domain, which should be set to the name of the GPG backend VM. This file survives the AppVM reboot, of course. Oct 25, 2006 · $ gpg --send-keys D0FE7AFB gpg: sending key D0FE7AFB to hkp server subkeys.pgp.net Keyservers distribute public keys to anyone who requests them. Once you hav sent your key to a keyserver, others can request your key using the --recv-keys option: gpg --recv-keys D0FE7AFB .

What is a GPG subkey? A GPG key is actually a collection of keys. There is one primary key, which is typically used only for signing and certification. The suggested usage of GPG is to create a subkey for encryption. This subkey is a separate key that, for all intents and purposes, is signed by your primary key and transmitted at the same time.

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Feb 20, 2019 · Starting with GPG Suite 2018.4 (released 2018-09-21) GPG Keychain and GPG Mail users will see a warning, four weeks prior to an expiration. You can then easily extend your key for another two years with a single click. Should your key already be expired that is not a problem - how to extend your expired key: Extend key Oct 17, 2017 · GPG does not import secret subkeys from --export-secret-subkeys output if subkey stubs existed before ... then afterwards --import properly imports all the subkeys ...

The subkeys may be shorter (thus more efficient) because you define them to have a short lifetime (e.g. one or two years): you don't have to make them fat enough to survive advances in technology one or two decades from now. The master key doubles as "revocation key" in case one of your subkeys gets stolen. I import [E] subkey to different folder from ~/.gnupg, and export subkey's public key with --homedir option.. I can see subkey's public key has less lines than master's plublic, using diff results that they has some starting lines the same, but then different lines at the bottom so at the end it's still different public key. $ gpg --homedir ./gnupg-test --export-secret-subkeys --armor --output secret-subkeys.gpg 0xD93D03C13478D580 As with the first option, an export with only the subkeys has to be created with the command above. Additionally to the following commands, I suggest to also copy the gpg.conf used in the keyring to create the key to the daily-use-keyring.

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gniibe renamed this task from GnuPG 2.1 cannot import secret keys with missing primary key to GnuPG 2.1 cannot import secret keys from GnuPG secring.gpg directly (if it is expired by original expiration date). Apr 13 2018, 6:57 AM How to work with PGP keys using GnuPG. ... gpg --gen-key. This fires up the process, and you'll be asked a number of questions. The first bit of interactive output looks like this:

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Retrieving subkeys from backup is non-trivial; GPG will not use old keys from new YubiKey on its own; Retriving subkeys from a backup. Because moving subkey to a SmartCard (like YubiKey) is a destructive operation, you will need to retrieve the subkeys from your backup before you can move them to a new YubiKey The subkeys may be shorter (thus more efficient) because you define them to have a short lifetime (e.g. one or two years): you don't have to make them fat enough to survive advances in technology one or two decades from now. The master key doubles as "revocation key" in case one of your subkeys gets stolen.

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Sep 30, 2017 · Generating the master key. The master key must be generated using the advanced mode, because by default when a new master key is generated, also a new subkey is created with all the capabilities (Authentication + Signing + Encryption), while we want something different. Note: PGP keys up to 4096 bits are only supported in YubiKey 4 models. Oct 17, 2017 · GPG does not import secret subkeys from --export-secret-subkeys output if subkey stubs existed before ... then afterwards --import properly imports all the subkeys ... gpg --import ${mykeyid}_subkeys.gpg gpg --import ${mykeyid}.pub Make sure to transport the 'mykeyid_subkeys.gpg' file securely since those subkeys can encrypt and decrypt content. Keybase. Keybase.io aims to make life with GPG easier. It does a really good job but it encourages what I consider bad behavior in key management.

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Import back the private subkeys you have exported, and the updated public key: gpg --import pubkeys subkeys. Check with gpg --list-secret-keys YOURMASTERKEYID that you have all of the subkeys and that the master key shows sec# instead of just sec. You can now start using your new subkey, publish it on the keyservers, etc. Subkeys need only be self-signed (which is automatic). Trust from external signatures is provided transitively. (Edit - 19 Apr 2015) gpg automatically uses the newest subkey to sign/encrypt. Some Terms. It’s best that you have an understanding of data encryption and data signing using public key cryptography before you read this.

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alice% gpg --output doc.gpg --encrypt --recipient [email protected] doc The --recipient option is used once for each recipient and takes an extra argument specifying the public key to which the document should be encrypted. The encrypted document can only be decrypted by someone with a private key that complements one of the recipients' public keys.
Apr 01, 2016 · Use gpg to add an additional signing subkey to your keypair. This new subkey is linked to the first signing key. So we have three subkeys. Store your master keypair in a safe place, for its loss will be catastrophic. Use gpg to remove the original signing subkey, leaving on the new signing subkey & the encryption subkey. Create a regular GPG ...

gpg --export-secret-subkeys <email> > subkeys; Delete all secret keys, to remove the master key from your system entirely. Import your subkeys again, now that the master key is gone. (If you're doing this on a separate airgapped computer, import your updated subkeys on the work machines where you want the subkeys.) gpg --import subkeys Apr 15, 2008 · How-To: Import/Export GPG key pair 1 minute read This tutorial will show how you can export and import a set of GPG keys from one computer to another. This way, you can sign/encrypt the same way one different computer. A simple way of doing it would be to: $

Nov 24, 2013 · Generating More Secure GPG Keys: A Step-by-Step Guide (this post) Using an OpenPGP Smartcard with GnuPG In this post, I’ll will cover the generation of a new GPG key and removal of the primary key, one of two mitigation strategies mentioned in the previous post . Convert GPG keys to subkeys. From Exterior Memory. Jump to: navigation, search. This is a short log (how to) I converted my PGP key to PGP subkeys. When you add a user-id or subkey, it is self-signed with your master key. So, you would need to give your passphrase along with these commands. How to revoke key components of a GPG key? To revoke a subkey, use the revkey command. # gpg --edit-key [email protected] command> list command> key 1 command> revkey. View & Copy GPG subkeys marked with the "authenticate" capability can be used for public key authentication with SSH. This is done using gpg-agent which, using the --enable-ssh-support option, can implement the agent protocol used by SSH. Requirements. A working gpg2 setup is required. It may be possible to use gpg 1.4 but with gpg-agent compiled from gpg2. Aug 31, 2018 · OpenPGP keys have 3 components: a master key, subkeys, and user ID(s). The private portion of the master key proves that you are the owner and have authority over creation and revocation of subkeys. The master key. The GPG master key will be used use to generate subkeys that will go on the Yubikey. Primary key and subkeys. An OpenPGP key actually consists of one or more pairs of public and private keys — the primary key (or root key, in GLEP 63 naming), and zero or more subkeys. Ideally, the primary key is only used to create subkeys, UIDs, manipulate them and sign other people’s keys.

Creating a new GPG key. GnuPG in debian unfortunately defaults to a 2048-bit RSA key as the primary with SHA1 as the preferred hash. Due to weaknesses found with the SHA1 hashing algorithm Debian prefers to use keys that prefer SHA2. The subkeys may be shorter (thus more efficient) because you define them to have a short lifetime (e.g. one or two years): you don't have to make them fat enough to survive advances in technology one or two decades from now. The master key doubles as "revocation key" in case one of your subkeys gets stolen. When you add a user-id or subkey, it is self-signed with your master key. So, you would need to give your passphrase along with these commands. How to revoke key components of a GPG key? To revoke a subkey, use the revkey command. # gpg --edit-key [email protected] command> list command> key 1 command> revkey. View & Copy To find your GPG key ID click on the My Personal Keys tab and look in the Key ID column next to the newly created key. In most cases, if you are asked for the key ID, you should prepend "0x" to the key ID, as in "0x6789ABCD". Now you should make a backup of your private key. Creating GPG Keys Using the KDE Desktop Import back the private subkeys you have exported, and the updated public key: gpg --import pubkeys subkeys. Check with gpg --list-secret-keys YOURMASTERKEYID that you have all of the subkeys and that the master key shows sec# instead of just sec. You can now start using your new subkey, publish it on the keyservers, etc.

You're trying to delete a user ID, not a subkey. Use key [n] and delkey instead. From the help comand inside gpg --edit-key: uid select user ID N key select subkey N deluid delete selected user IDs delkey delete selected subkeys If you already shared your key with others, better revoke the key instead of deleting it. By deleting it, other's ... A few weeks ago I created my new GPG/PGP key with subkeys and a few people asked me why and how. The rationale for creating separate subkeys for signing and encryption is written very nicely in the subkeys page of the debian wiki. When you add a user-id or subkey, it is self-signed with your master key. So, you would need to give your passphrase along with these commands. How to revoke key components of a GPG key? To revoke a subkey, use the revkey command. # gpg --edit-key [email protected] command> list command> key 1 command> revkey. View & Copy Apr 01, 2016 · Use gpg to add an additional signing subkey to your keypair. This new subkey is linked to the first signing key. So we have three subkeys. Store your master keypair in a safe place, for its loss will be catastrophic. Use gpg to remove the original signing subkey, leaving on the new signing subkey & the encryption subkey. Create a regular GPG ...

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Budurwar kauye part 1Nov 24, 2013 · Generating More Secure GPG Keys: A Step-by-Step Guide (this post) Using an OpenPGP Smartcard with GnuPG In this post, I’ll will cover the generation of a new GPG key and removal of the primary key, one of two mitigation strategies mentioned in the previous post . If no keys are specified, then all known secret keys are listed. A # after the initial tags sec or ssb means that the secret key or subkey is currently not usable. We also say that this key has been taken offline (for example, a primary key can be taken offline by exporting the key using the command --export-secret-subkeys). Nov 24, 2013 · Generating More Secure GPG Keys: A Step-by-Step Guide (this post) Using an OpenPGP Smartcard with GnuPG In this post, I’ll will cover the generation of a new GPG key and removal of the primary key, one of two mitigation strategies mentioned in the previous post . Apr 01, 2016 · Use gpg to add an additional signing subkey to your keypair. This new subkey is linked to the first signing key. So we have three subkeys. Store your master keypair in a safe place, for its loss will be catastrophic. Use gpg to remove the original signing subkey, leaving on the new signing subkey & the encryption subkey. Create a regular GPG ...

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Creating a new GPG key. GnuPG in debian unfortunately defaults to a 2048-bit RSA key as the primary with SHA1 as the preferred hash. Due to weaknesses found with the SHA1 hashing algorithm Debian prefers to use keys that prefer SHA2. Feb 12, 2020 · GPG's Signing Subkey Cross-Certification documentation has more detail on cross certification, and gpg v2.2.1 notes "subkey does not sign and so does not need to be cross-certified". hokey may also indicate a problem (red text) with Key expiration times: [] on the primary key (see Note #3 about not setting an expiry for the primary key). Export

I want to know if it is possible to get GPG running on an Android phone without the use of third-party apps. Android runs on a Linux kernel, and correct me if I'm wrong, but Linux inherently supports GPG. My use case is that I have an old Samsung phone that I want to use solely for accessing GPG encrypted data on a USB drive.

gniibe renamed this task from GnuPG 2.1 cannot import secret keys with missing primary key to GnuPG 2.1 cannot import secret keys from GnuPG secring.gpg directly (if it is expired by original expiration date). Apr 13 2018, 6:57 AM What is a GPG subkey? A GPG key is actually a collection of keys. There is one primary key, which is typically used only for signing and certification. The suggested usage of GPG is to create a subkey for encryption. This subkey is a separate key that, for all intents and purposes, is signed by your primary key and transmitted at the same time.

Apr 01, 2016 · Use gpg to add an additional signing subkey to your keypair. This new subkey is linked to the first signing key. So we have three subkeys. Store your master keypair in a safe place, for its loss will be catastrophic. Use gpg to remove the original signing subkey, leaving on the new signing subkey & the encryption subkey. Create a regular GPG ...