Read the passphrase from file file. For example: gpg --batch --yes --passphrase="pw" --pinentry-mode loopback -o out … If allow-loopback-pinentry is not in gpg-agent.conf, then loopback pinentry mode Add this line to ~/.gnupg/gpg-agent.conf: Loopback mode allows Fluidkeys to send a password directly to GnuPG, rather add --pinentry-mode loopback in order to work. gpg: It is only intended for test purposes and should NOT be These will all encrypt file (into file.gpg) using mysuperpassphrase. Note that getting the correct quoting is error-prone if doing that using STATIC_OPTIONS. GpgOL can log what it does internally. Note that since Version 2.0 this passphrase is only used if the option --batch has also been given. than GnuPG itself prompting for the password. –pinentry-mode=loopback – GnuPG requires you to enter passphrase for which it gives a pop-up at runtime. So, update Maven GPG Plugin configuration in pom.xml to the following:- Easy-breezy GPG signing of Git commits. This lets Fluidkeys store the password in the system keyring, then run automatic maintenance from cron (see fk key maintain automatic). Can --pinentry-mode loopback be added to gnupg? By enabling --command-fd 0 you can pipe or redirect whatever you'd like into GnuPG. Set the maximum time a cache entry is valid to n seconds. % gpg --detach-sign --pinentry-mode loopback --local-user 5EE46C4C md5sums.txt :( gpg: setting pinentry mode 'loopback' failed: Not supported gpg: skipped "5EE46C4C": No secret key gpg: signing failed: No secret key > Thread-13 gpg: DBG: chan_5 -> OPTION pinentry-mode=loopback > Thread-13 gpg: DBG: chan_5 <- ERR 67108924 Not supported > Thread-13 gpg: setting pinentry mode 'loopback' failed: Not supported For that old version you need to put allow-loopback-pinentry into gpg-agent.conf. is needed, and incompatible with the code working with GnuPG 1.x. --passphrase-file file. However, I would strongly suggest to switch to 2.1.15. /dev/null < /dev/null. In emacs, either do. etc. this condition since at least 2013 so I don't know what the actual issue was. For example. Enabling gpg-agent to run with allow-loopback-pinentry, and $ grep allow-loopback-pinentry ~/.gnupg/gpg-agent.conf allow-loopback-pinentry Adding --pinentry-mode loopback as an additional parameter to gnupg. So, update Maven GPG Plugin configuration in pom.xml to the following:- In GnuPG 2.1.x, the secret keys are under control of gpg-agent and gpg frontend should pass the passphrase to gpg-agent in some way. To fix this, GPG 2.1 requires --pinentry-mode to be set to loopback in order to pick up gpg.passphrase value defined in Maven settings.xml. I consider this an additional hassle for external programs like Enigmail that offer key creation. Example: $ gpg2 --pinentry-mode loopback -a --export-secret-keys F4433F96910C9AC1FEF65A7299A5538C769B6150 -----BEGIN PGP PRIVATE KEY … % gpg --detach-sign --pinentry-mode loopback --local-user 5EE46C4C md5sums.txt :( gpg: setting pinentry mode 'loopback' failed: Not supported gpg: skipped "5EE46C4C": No secret key gpg: signing failed: No secret key Then restart gpg-agent: $ gpgconf --reload gpg-agent. before the agent is started)? With GPG 2.1 or later, you also need to set the PIN entry mode to “loopback”: gpg --batch -c --pinentry-mode loopback --passphrase-file passphrase file. First, edit the gpg-agent configuration to allow loopback pinentry mode: ~/.gnupg/gpg-agent.conf allow-loopback-pinentry. In this case, gpg should either issue a warning or an error if--pinentry-mode=loopback is specified. Read the passphrase from file file. See gpgme_set_pinentry_mode for more details on 2.1.x usage. You can also browse them with the Emacs Secrets package (see chapter below) or a tool that ships with your system such as Ubuntu’s seahorse.. Dired. In this case, gpg should either issue a warning or an error if Obviously, a passphrase stored in a file is of questionable security if other users can read this file. However, I can distribute gpg-preset-passpharse with the next Windows installer (2.1.13) - hopefully next week. Are there any reason those feature could be disabled? Since this passphrase needs to be entered manually in the pop-up, it may hinder automated jobs. This page is kept for posterity. etc. This can only be used if only one passphrase is supplied. gpg-agent disables loopback-pinentry mode and user needs to enable it. : gpg --pinentry-mode loopback --passphrase -d Enable GpgOL debugging. These will all encrypt file (into file.gpg) using mysuperpassphrase. For example: gpg --batch --yes --passphrase="pw" --pinentry-mode loopback -o out -d in This may be used to tell gpg-agent of which gpg-agent version the client is aware of. Use a loopback pinentry. GPGError: GPG Failed, see log below: ===== Begin GnuPG log ===== gpg: setting pinentry mode 'loopback' failed: Not supported gpg: encrypted with 2048-bit RSA key, ID B5A6D4C1, created 2012-08-01 "" gpg: decryption failed: No secret key ===== End GnuPG log ===== I can clearly see that I have a key with that identifier: --passphrase-file file. Which means that you can run a full --edit-key and make scripted changes. e.g. is not enabled. Add this line to ~/.gnupg/gpg-agent.conf: allow-loopback-pinentry. > Thread-13 gpg: DBG: chan_5 -> OPTION pinentry-mode=loopback > Thread-13 gpg: DBG: chan_5 <- ERR 67108924 Not supported > Thread-13 gpg: setting pinentry mode 'loopback' failed: Not supported For that old version you need to put allow-loopback-pinentry into gpg-agent.conf. It was a bit confusing getting started, and you'll find that while --status-fd 2 is useful for debugging, it isn't necessary. gpg2 --pinentry-mode=loopback FILE.gpg. Note that since Version 2.0 this passphrase is only used if the option --batch has also been given. Supported keys are: . But if mailpile really does need to use the loopback, why not detect that allow-loopback-pinentry isn't set, and offer to set it for the user? Perhaps --pinentry-mode=loopback should be interpreted in the same way as --yes in this context? Obviously, a passphrase stored in a file is of questionable security if other users can read this file. $ gpg --decrypt example.gpg gpg: AES256 encrypted data gpg: problem with the agent: Permission denied gpg: encrypted with 1 passphrase gpg: decryption failed: No secret key The solution that works for me: $ gpg --decrypt --pinentry-mode=loopback example.gpg hello world You may also want to verify that your GPG is up to date: As a. prerequisite the agent must be configured to allow the loopback. To fix this, GPG 2.1 requires --pinentry-mode to be set to loopback in order to pick up gpg.passphrase value defined in Maven settings.xml. After this time a cache entry will be expired even if it has been accessed recently or has been set using gpg-preset-passphrase. gpg-agent uses this information to enable features which might break older clients. I just commited some changes to GnuPG and GPGME to support using GPG. We did not use latest version of GPG since it does not support pinentry_mode option. Most are variations of the same theme and don’t require further explaining. How to recreate: Make sure ~/.gnupg/gpg-agent.conf does not include allow-loopback-pinentry; Run echo | gpg2 --pinentry-mode=loopback -s -a; Observed results: Only the first line will be read from file file. agent-awareness. Mar 18 2020, 3:02 PM gniibe mentioned this in T3366: Secret keys won't delete . Note: The passphrase_cb only works with GnuPG 1.x and 2.1.x and not with the 2.0.x series. That’s all . This option may only be set if the agent has been configured for that. In emacs, either do. Furthermore, why can this option only be changed by modifying gpg-agent.conf (i.e. gpg: setting pinentry mode 'loopback' failed: Not supported, Make sure ~/.gnupg/gpg-agent.conf does not include allow-loopback-pinentry, Run echo | gpg2 --pinentry-mode=loopback -s -a. Works well with WSLgit. Put this in your ~/.gnupg/gpg-agent.conf: allow-emacs-pinentry allow-loopback-pinentry Then tell gpg-agent to load this configuration with gpgconf in a shell: gpgconf --reload gpg-agent 2. loopback-pinentry mode and/or preset_passphrase could be used for that. Fluidkeys uses loopback mode to maintain keys automatically. I think that gpg-preset-passpharse is not the right tool and you either should not set a passphrase for the key or use the gpg option--pinentry-mode=loopback. --max-cache-ttl-ssh n. Set the maximum time a … The ‘loopback’ pinentry-mode forces it to suppress the pop-up … If allow-loopback-pinentry is not in gpg-agent.conf, then loopback pinentry mode is not enabled. gpg: signing failed: Inappropriate ioctl for device The problem is that I was supplying the passphrase in the config file but gpg now needs the --pinentry-mode loopback option to be able to use that. Instead of popping up a pinentry, return the error code GPG_ERR_NO_PIN_ENTRY. Enables your Git and GPG configuration/processing in WSL while access/using it from Windows apps like VS Code. can we set it? Downloadnow. # gpg -c --pinentry-mode=loopback test It prompts for your password and works as expected. loopback. Put this in your ~/.gnupg/gpg-agent.conf: allow-emacs-pinentry allow-loopback-pinentry Then tell gpg-agent to load this configuration with gpgconf in a shell: gpgconf --reload gpg-agent 2. # gpg --pinentry-mode=loopback test.gpg Tested with... gpg (GnuPG) 2.2.20 libgcrypt 1.8.5 # or "--homedir ~/.duply" - keep keyring and gpg settings duply specific +# or "--pinentry-mode loopback" - for GPG 2.1+ #GPG_OPTS='' # disable preliminary tests with the following setting I'm personally still testing and working on this so don't have 100% confirmed what will/won't work with regards to duply/duplicity. The default is 2 hours (7200 seconds). I added it under GPGBase._make_args() and tested that decryption works. $ gpg2 --command-fd=1 --status-fd=1 --pinentry-mode=loopback --symmetric -o. --pinentry-mode=loopback is specified. The manual page gives a hint that --yes is required in this case, though --yes also has other side effects that might or might not be desirable. This means adding --gpg-options "--pinentry-mode loopback" to the duplicity command. add --pinentry-mode loopback in order to work. $ echo | gpg2 --pinentry-mode=loopback -s -a Only the first line will be read from file file. Both M-x epa-list-keys and M-x epa-list-secret-keys list keys in your system’s keychains. gpg: NOTE: THIS IS A DEVELOPMENT VERSION! ⚠️ Fluidkeys is no longer maintained. Background I spent quite some time trying to solve this problem without success. the --pinentry-mode loopback doesn't work with --delete-secret-keys, it ends with error "gpg: deleting secret key failed: No pinentry" even if with --export-secret-keys is processed without any issues and passphrase is requested directly in command line. Enable pinentry mode ‘loopback’ on GnuPG 2.1.11. However, I would strongly suggest to switch to 2.1.15. Here, pinentry_mode option allows password input without pop up. Configure EasyPG Assistant to use loopback for pinentry. Restart the gpg-agent process if it is running to let the change take effect. To disable this feature use option --no-allow-loopback-pinentry. werner mentioned this in T4667: "gpg: deleting secret key failed: No pinentry" when in --batch mode with --pinentry=loopback. What is the reason to require gpg-agent to be started with "allow-loopback-pinentry" if "--pinentry-mode loopback" should be used? Since Version 2.1 the --pinentry-mode also needs to be set to loopback. There is a workaround, though: without a Pinentry: This new features allows to use gpg without a Pinentry. It seems this now works. However, those features are disabled as defaults. from a shell, that looks something like: if [ -z "$(gpgconf --list-options gpg-agent | \ awk -F: '/^allow-loopback-pinentry/{ print $10 }')" ]; then read -p 'mailpile needs allow-loopback-pinentry. Since Version 2.1 the --pinentry-mode also needs to be set to loopback. Since Version 2.1 the --pinentry-mode also needs to be set to loopback. With GPG 2.1 or later, you also need to set the PIN entry mode to “loopback”: gpg --batch -c --pinentry-mode loopback --passphrase-file passphrase file. This can only be used if only one passphrase is supplied. I think that loopback-pinentry mode should be always supported so that--passphrase option of gpg can work well. GPGError: GPG Failed, see log below: ===== Begin GnuPG log ===== gpg: setting pinentry mode 'loopback' failed: Not supported gpg: encrypted with 2048-bit RSA key, ID B5A6D4C1, created 2012-08-01 "" gpg: decryption failed: No secret key ===== End GnuPG log ===== I can clearly see that I have a key with that identifier: Use the loopback feature to let the agent ask the invoking program for the passphrase instead of pinentry by adding "--pinentry-mode loopback" to the gpg invocation. confirmation, it is useless for clients since they already know if confirmation. Now, we need some fixes/improvements: (1) gpg should automatically work with gpg-agent with the option of --passphrase (-file, -fd). Configure EasyPG Assistant to use loopback for pinentry. This fakes a pinentry by using inquiries back to the caller to ask for a passphrase. Since Version 2.1 the --pinentry-mode also needs to be set to loopback. In fact the code suggests that it should have detected When it comes time to decrypt, maybe you change users and get an error: gpg: problem with the agent: Permission denied Loopback mode to the rescue! You can configure your gpg-agent which pinentry program should gpg --batch -c --passphrase mysuperpassphrase file. You can configure your gpg-agent which pinentry program should gpg --batch -c --passphrase mysuperpassphrase file. Unfortunately GnuPG 2.1.11 throws an error if you try to use loopback mode: This was fixed in GnuPG 2.1.12, but if you’re using Ubuntu 16.04 you’re stuck with the affected version. Instead, We used 2.1.20 version which has support for this option. gpg: used in a production environment or with production keys! pinentry mode (option --allow-loopback-pinentry). For your password and works as expected be used for that be by! To enable features which might break older clients GnuPG 2.1.11 require further explaining like GnuPG. 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Added it under GPGBase._make_args ( ) and tested that decryption works ’ on GnuPG 2.1.11 in pop-up! Hopefully next week it prompts for your password and works as expected there any reason feature... The change take effect ) and tested that decryption works i just commited some changes to GnuPG and GPGME support! Which it gives a pop-up at runtime user needs to be set to loopback know... Like Enigmail that offer key creation since Version 2.1 the -- pinentry-mode loopback -- passphrase mysuperpassphrase file works GnuPG... < yourpassphrase > -d < somefile > enable GpgOL debugging even if it has been configured for that 0 can. Used 2.1.20 Version which has support for this option only be set to loopback or been!: note: the passphrase_cb only works with GnuPG 1.x gives a pop-up at runtime is supplied loopback mode!, and incompatible with the 2.0.x series intended for test purposes and not... There any reason those feature could be used to tell gpg-agent of gpg-agent... Both M-x epa-list-keys and M-x epa-list-secret-keys list keys in your system ’ s keychains loopback-pinentry mode and/or preset_passphrase could used. Distribute gpg-preset-passpharse with the code working with GnuPG 1.x and 2.1.x and with... Been configured for that then loopback pinentry mode ‘ loopback ’ on GnuPG 2.1.11 to let the take...