In order to use the gpg option –passphrase-fd in GnuPG v2, you must specify the –batch parameter. I will first explain how –passphrase-fd works, and then get to the examples. –passphrase-fd tells GnuPG which file descriptor (-fd) to expect the passphrase to come from. The standard file descriptors are STDIN (0), STDOUT (1) and STDERR … Read more
If gpg –list-keys returns nothing, gpg –generate-key solves the problem.
The only way to use a specific public key file like a keyring is if the file is in the GPG (OpenPGP) file format and not an ASCII armoured version (e.g. pubkey.gpg not pubkey.asc). So this will verify the file: gpg –no-default-keyring –keyring /path/to/pubkey.gpg –verify /path/to/file.txt.gpg And this will not: gpg –no-default-keyring –keyring /path/to/pubkey.asc –verify … Read more
Even I had the above issue in Ubuntu 20 WSL, I tried all the below | above suggestions, but none worked for me. root@7400-9888K13:/mnt/c/Users/PKammari# wget -q -O – https://packages.cloudfoundry.org/debian/cli.cloudfoundry.org.key | sudo apt-key add – gpg: can’t connect to the agent: IPC connect call failed What did I do to resolve the issue? remove gpg install … Read more
Adding –batch –yes Example: gpg –batch –yes -u me@bbb.com -r “you@aaa.com” \ –output “OUTPUTFILENAME.xls.pgp” -a -s -e “FILE.xls” Complete example with passphrase file: gpg –batch –yes –passphrase-fd 0 -u me@bbb.com -r “you@aaa.com” \ –output “OUTPUTFILENAME.xls.pgp” -a -s -e “FILE.xls”< \ passphrase.txt
From apt-key sources, you can set APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE to a non-empty value to disable this warning. You can also use “grep -q” so you don’t need to redirect stdout in /dev/null either.
I stumbled upon this today and found the fix at Maven Central Repository Documentation. The SKS Keyserver Network is being deprecated and probably gone by now. Just use another GPG key server like: keyserver.ubuntu.com keys.openpgp.org pgp.mit.edu So for example gpg –keyserver keyserver.ubuntu.com –recv-key 908F435E
There is no in-built method for doing this, but it is simple enough to create a test that doesn’t modify anything and allows you to just check your passphrase. You didn’t specify, so I will assume you are using GnuPG version less than v2 and are on Linux with Bash for your commandline interpreter. I … Read more
There are several detail levels you can get when looking at OpenPGP key data: a basic summary, a machine-readable output of this summary or a detailed (and very technical) list of the individual OpenPGP packets. Basic Key Information For a brief peak at an OpenPGP key file, you can simply pass the filename as parameter … Read more