To fix the “gpg: no valid OpenPGP data found” error on your Linux system, try these seven solutions:
- Update GPG and OpenPGP by running
sudo apt update && sudo apt upgradeand
sudo apt install gnupg. Restart GPG with
sudo systemctl restart gpg.
- Execute the
gpg --list-packetscommand to check for corrupted files or import the correct public key using the
- Install CA certificates by running
sudo apt update && sudo apt install ca-certificates.
- Open the .bashrc file with
nanocommand and add
export CURL_CA_BUNDLE=/etc/ssl/certs/ca-certificates.crtto change the path in the
- Refresh the keyring with the
- Check the keyring settings with the
gpg --list-keyscommand and fix them with the
- Check the keyserver settings with
gpgconfcommands. Update the keyserver settings with
gpgconf --homedircommand and verify the changes with
gpgconf --list-options gpg | grep keyservercommand.
To prevent the “gpg: no valid OpenPGP data found” error, it’s important to keep keyring settings up-to-date, verify data before decryption, backup the keyring, use reputable keyservers, check GPG keys and files before use, keep software up-to-date, and use trusted sources for OpenPGP data.
Learn more about how to fix the “gpg: no valid OpenPGP data found” error in the detailed guide below.
If you experience the “gpg: no valid OpenPGP data found” error, it is likely due to incorrect keyserver configuration, outdated software, or corrupted files. However, this error may also appear when using wget or curl, often caused by a certification issue or when the CA certification is located in the wrong path. To fix this error, I’ll guide you to the seven best methods in this article. Along with that, I’ll also share seven best practices to prevent this error from coming back on your Linux system.
How to Fix the gpg: no valid OpenPGP data found Error [7 Simple Ways]
To fix the “gpg: no valid OpenPGP data found” error, some solutions include updating outdated software, checking for improperly formatted or corrupted files, installing CA certificates, changing the path in the .bashrc file, refreshing the keyring, verifying keyring settings, updating keyserver configurations, and checking for firewall restrictions. Here’s the detailed troubleshooting guide for each of these methods:
1. Fix the Outdated Software
Make sure both GPG and OpenPGP software are up-to-date and compatible to avoid or fix the “gpg: no valid OpenPGP data found” error. Here are the steps to update GPG and OpenPGP:
- Check the newer version of GPG by running the command:
sudo apt update && sudo apt upgrade
- To install the newer version of GPG, use the command:
sudo apt install gnupg
- After running these commands, you’ll have this output:
- Now, restart GPG with the following commands:
gpgconf --list-dirs gpgconf --kill gpg-agent gpgconf --reload gpg-agent
Alternatively, you can use this command to restart GPG:
sudo systemctl restart gpg
- Now, try decrypting or verifying the OpenPGP data again.
gpg -c filename.extension
- Once you execute this command, you’ll have to enter the passphrase for this file.
- If the command is successful, you’ll see the following output:
2. Check for Improperly Formatted or Corrupted Files
Sometimes, you may see the “gpg: no valid OpenPGP data found” error when the files are corrupt or improperly formatted. If that’s the case, follow these steps:
- Check if the file is complete and not corrupted by running the command:
gpg --list-packets filename.extension.gpg
- Enter the passphrase that you had entered for this file to let the Terminal read the packets.
- You’ll see the following output:
- If the file is corrupted, try downloading it from a trusted source again. But if the file is complete but encrypted with a different public key, obtain the correct public key and import it into GPG using the command:
gpg --import publickey.asc
3. Install CA Certificates
If you are experiencing the “gpg: no valid OpenPGP data found” error while using GPG, installing the CA certificate onto your system can help to resolve the issue. This is because GPG relies on digital certificates to authenticate and encrypt messages, and the absence or corruption of these certificates can cause this error message to appear. To install the CA certificate on your system, you can follow these steps:
- Execute the following code to install CA certificates:
sudo apt update && sudo apt install ca-certificates
- Wait for the update and the new CA certificate installation process to complete.
- If your Linux packages and CA certificates are already updated and installed on your system, you will see a message indicating this on your Terminal.
4. Change the Path in the .bashrc File
If the “gpg: no valid OpenPGP data found” error is caused by the computer looking for the CA certification in the wrong path, you can change the path in the .bashrc file.
- Use the following command to open the .bashrc file executable script file:
- Once the file opens, add the following command to it:
- Press Ctrl + O to save the file and Ctrl + X to exit the nano editor.
- This command will add the correct path to the file, and the “gpg: no valid OpenPGP data found” error should no longer occur.
5. Refresh the Keyring
To fix the “gpg: no valid OpenPGP data found” error, try refreshing the keyring. To do this, you have to:
- Execute the following command in the Terminal app:
- Wait for the refreshing process to complete.
- Once this process is complete, try to decrypt the file or verify the OpenPGP signature and check if the error is resolved.
6. Verify the Keyring Settings
Ensure that the keyring settings are correct. Follow the steps below to verify the keyring settings:
- In the Terminal app, enter the following command:
- You’ll see the list of gpg keys stored on your Linux system.
- If you see an error message, the keyring settings are incorrect. To fix the settings, enter the following command:
gpg --recv-keys <key-id>
Replace <key-id> with the correct ID for your key.
7. Incorrect GPG Keyserver Configuration
Another reason for the “gpg: no valid OpenPGP data found” error is the incorrect GPG keyserver configuration. To ensure that it is properly configured, follow these steps:
- Check the keyserver settings by running the command:
- Look for the Home entry in the output and note the location of the configuration file.
- Now, check the current keyserver settings by running the following command:
gpgconf --list-options gpg | grep keyserver
- This command will display the current keyserver settings in the Terminal Window.
- If the keyserver settings are wrong or outdated, update it with the command below while replacing the
/.gnupgwith the path to your GPG home directory:
gpgconf --homedir ~/home/farah/.gnupg --kill all && gpgconf --homedir /home/farah/.gnupg --reload gpg
- To verify that the keyserver settings have been updated to the default keyserver, run the following command:
gpgconf --list-options gpg | grep keyserver
- You’ll see the following output:
7 Tips to Prevent “gpg: no valid OpenPGP data found” Error
To prevent the “gpg: no valid OpenPGP data found” error from occurring in the future, it’s important to follow best practices. Here are some of them to consider:
- 🔑 Keep keyring settings and GPG up-to-date: Update the keyring settings so that GPG can find the necessary key to decrypt files and verify OpenPGP signatures. You can run
sudo apt-get update && sudo apt-get install gnupgto update the package list and install the GnuPG package. Then, execute
gpg --refresh-keysto fetch the latest public key updates from the key servers and refresh your keyring.
- 🔍 Verify OpenPGP data before decryption: Verify the validity of OpenPGP data before decrypting a file to prevent corrupted or invalid data issues, including the “gpg: no valid OpenPGP data found” error. You can run
gpg --verify <filename>to verify the OpenPGP data.
- 💾 Keep a backup of the keyring: Use
gpg --export-secret-keys > mykeyring_backup.ascto keep a backup of the keyring. This command will export your secret keys and save them to a file named “mykeyring_backup.asc” in your current working directory. You can then copy this file to a secure location, such as an external hard drive or a cloud storage service.
- 🔍 Use reputable keyservers for public keys: To ensure key authenticity, it’s important to use reputable keyservers to obtain public keys. Some examples of reputable keyservers include keyserver.ubuntu.com and keys.openpgp.org.
- 🔍 Check GPG keys and files before use: Before using GPG keys and files, it’s important to verify that they’re not corrupted. This can help prevent issues related to corrupted files, which may cause the “gpg: no valid OpenPGP data found” error. You can use the
gpg --check-sigs <filename>command to check the GPG keys and files.
- 🔍 Use trusted sources for OpenPGP data: To prevent issues related to malicious data, only use trusted sources when obtaining OpenPGP data. It can help you to avoid the “gpg: no valid OpenPGP data found” error due to the use of untrusted data.
To Sum Up
Experiencing the “gpg: no valid OpenPGP data found” error can be frustrating, but the solution is often simple. By following the troubleshooting steps outlined in this article, you can quickly fix the issue and get your GPG system running smoothly again. It’s important to keep keyring settings up-to-date, verify OpenPGP data before decryption, keep a backup of the keyring, use reputable keyservers for public keys, check GPG keys and files before use, keep GPG and related software up-to-date, and use trusted sources for OpenPGP data to prevent encountering errors in the future.
Want to learn more about Linux? Read my practical guides on fixing wget errors and No Wi-Fi Adapter. You can also check out the Linux commands cheat sheet to learn the best practices for using all-time popular Linux commands.
Frequently Asked Questions
What is the relationship between OpenPGP and GPG?
OpenPGP is a standard that defines a set of methods for encrypting and signing data using public key cryptography. GPG, or GNU Privacy Guard, is a popular and widely used implementation of this standard. GPG provides a free and open-source software solution for encrypting and signing data, allowing users to secure their sensitive information.
Can I encrypt and sign emails using GPG?
Yes, GPG can be used to encrypt and sign emails. A variety of email clients, including Microsoft Outlook and Thunderbird, offer plugins that enable the use of GPG for email encryption and signing. By using GPG to encrypt and sign emails, you can ensure that your communications are secure and that only the intended recipient can read the content.
Is GPG the sole encryption software available for Linux systems?
No, Linux systems have a variety of encryption software options available. In addition to GPG, popular encryption software for Linux includes Libsodium, NaCl, and OpenSSL, among others. Each option provides different features and benefits, so choosing the encryption software that best fits your needs is important.
Can the “gpg: no valid OpenPGP data found” error harm my system?
Typically, “gpg: no valid OpenPGP data found” error is the software-related issue and do not cause any harm to your system. But if you are working with sensitive data, it is critical to ensure that your encryption software is operating correctly to prevent any security breaches. So, if you experience GPG errors, it is important to troubleshoot and resolve them promptly to ensure that your encrypted data remains secure.