How to sign a rpm package without typing password?

Question

I am trying to sign an RPM package that I created using GPG without typing the password, typing the password I can sign, however without typing the password is opening the message box Please enter the passphrase to unlock the OpenPGP secret key, I need the password not to be requested when signing the package, as this will be a script executed in "silent mode". I probably have the wrong command, but I'm having a hard time finding the solution.

This is the command I am trying to execute, and even then the password is requested:

gpg --batch --passphrase "78910" --clearsign test-1-0.x86_64.rpm

With this second command, the password is not requested:

echo "78910" | gpg --batch --passphrase-fd 0 --clearsign test-1-0.x86_64.rpm

However, the signature is not performed and returns the error described below:

gpg: signing failed: Inappropriate ioctl for device gpg: /test-1-0.x86_64.rpm: clear-sign failed: Inappropriate ioctl for device

With this third command, the reported error is different:

echo "78910" | gpg --batch --passphrase-fd 0 ~/.gnupg/trustdb.gpg --clearsign test-1-0.x86_64.rpm

Error message:

gpg: Note: '--clearsign' is not considered an option gpg: WARNING: no command supplied. Trying to guess what you mean ... usage: gpg [options] [filename]

This is my code to create the gpg key, i try create without password, but i receive error when the password value is empty.

#!/bin/bash
echo "Key-Type: 1" > gen-key-script
echo "Key-Length: 1024" >> gen-key-script
echo "Subkey-Type: 1" >> gen-key-script
echo "Subkey-Length: 1024" >> gen-key-script
echo "Name-Real: gpg test" >> gen-key-script
echo "Name-Email: [email protected]" >> gen-key-script
echo "Expire-Date: 0" >> gen-key-script
echo "Passphrase: 78910" >> gen-key-script
echo "" >> gen-key-script

#---------------------------------------------------------
# GENERATE THE KEY
#---------------------------------------------------------
gpg --batch --gen-key gen-key-script

#---------------------------------------------------------
# .RPMMACROS
#---------------------------------------------------------
echo "%_gpg_name gpg test <[email protected]>" > ~/.rpmmacros

Answer 1

In case your GPG passphrase is empty:

I am aware this is a bit late answer, but it works for me the best since I don't have GPG passphrase (empty passphrase). You can implement some techniques to pass it securely on CLI without typing it, anyway it you have empty passphrase I think this is a good solution.

echo "" | setsid rpmbuild -bb --sign <filename>.spec

SOURCE: https://rpm-list.redhat.narkive.com/7hkHM9bp/signing-rpms-without-a-passphrase#post4

Answer 2

If you don't want to type the password you'll need to store your private key on disk without being protected by a password. That means that everybody who has access to the key file can sign your packages. Decide if you want that.

---

If you don't want to protect the key use %no-protection, like this:

echo "%no-protection" > gen-key-script
echo "Key-Type: 1" >> gen-key-script
echo "Key-Length: 1024" >> gen-key-script
echo "Subkey-Type: 1" >> gen-key-script
echo "Subkey-Length: 1024" >> gen-key-script
echo "Name-Real: gpg test" >> gen-key-script
echo "Name-Email: [email protected]" >> gen-key-script
echo "Expire-Date: 0" >> gen-key-script
echo "" >> gen-key-script