Tell me what to do to obtain gpg?

@gpg --gen-key

login: gpglogin


    zcash_version: v1.0.0-rc2
    gpg_key_name: 'gpglogin'
    git_name: 'gitlogin'
git_email: ''

I begin to build get an error

You need a passphrase to unlock the secret key for
user: "gitlogin (siski) <>"
2048-bit RSA key, ID 72463A1B, created 2016-11-26

gpg-agent[19680]: command get_passphrase failed: Operation cancelled
gpg: cancelled by user
gpg: skipped "gitlogin": Operation cancelled
gpg: signing failed: Operation cancelled
./bin/gsign:11:in `system!': failed to run gpg2 --detach-sign -u "gitlogin" "../gitian.sigs/v1.0.3/gitlogin/zcash-1.0.3-build.assert" (RuntimeError)
	from ./bin/gsign:93:in `<main>'

I do not understand what requires gpg_key_name: ?