[gentoo-commits] repo/gentoo:master commit in: sec-keys/openpgp-keys-gentoo-developers/, ...

[gentoo-commits] repo/gentoo:master commit in: sec-keys/openpgp-keys-gentoo-developers/, ...

[Sam James]

commit:     f74a1295ea1fbbee4d17db8556a0e925a3abf559
Author:     Sam James <sam <AT> gentoo <DOT> org>
AuthorDate: Fri Jul  8 05:30:14 2022 +0000
Commit:     Sam James <sam <AT> gentoo <DOT> org>
CommitDate: Tue Jul 12 23:46:34 2022 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=f74a1295

sec-keys/openpgp-keys-gentoo-developers: new package, add 20220707, 9999

Signed-off-by: Sam James <sam <AT> gentoo.org>

 sec-keys/openpgp-keys-gentoo-developers/Manifest   |   2 +
 .../files/keyring-mangler.py                       |  94 +++++++++
 .../openpgp-keys-gentoo-developers/metadata.xml    |   9 +
 .../openpgp-keys-gentoo-developers-20220711.ebuild | 214 +++++++++++++++++++++
 .../openpgp-keys-gentoo-developers-99999999.ebuild | 214 +++++++++++++++++++++
 5 files changed, 533 insertions(+)

diff --git a/sec-keys/openpgp-keys-gentoo-developers/Manifest b/sec-keys/openpgp-keys-gentoo-developers/Manifest
new file mode 100644
index 000000000000..9bc91da807c4
--- /dev/null
+++ b/sec-keys/openpgp-keys-gentoo-developers/Manifest
@@ -0,0 +1,2 @@
+DIST openpgp-keys-gentoo-developers-20220711-active-devs.gpg 3237775 BLAKE2B 511e4ea8907593b5ed05c79a0bf6ae131856f0511f3f6a744f393a077ad25fe3f6780caac60d4f94965d4c0aa14debae068599f50920caeaad44303a844bf7ed SHA512 c0122037a3bfde1eec0c3ca7a303ff82f532c518427b34814c12949572c18537f617db22563c15d40fd41f0c94e6c50bcd3e0d3d7d1175400057aafbe41ae2b2
+DIST openpgp-keys-gentoo-developers-99999999-active-devs.gpg 3237775 BLAKE2B 511e4ea8907593b5ed05c79a0bf6ae131856f0511f3f6a744f393a077ad25fe3f6780caac60d4f94965d4c0aa14debae068599f50920caeaad44303a844bf7ed SHA512 c0122037a3bfde1eec0c3ca7a303ff82f532c518427b34814c12949572c18537f617db22563c15d40fd41f0c94e6c50bcd3e0d3d7d1175400057aafbe41ae2b2

diff --git a/sec-keys/openpgp-keys-gentoo-developers/files/keyring-mangler.py b/sec-keys/openpgp-keys-gentoo-developers/files/keyring-mangler.py
new file mode 100644
index 000000000000..3100e6226375
--- /dev/null
+++ b/sec-keys/openpgp-keys-gentoo-developers/files/keyring-mangler.py
@@ -0,0 +1,94 @@
+#!/usr/bin/env python
+#
+# Distributed under the terms of the GNU General Public License v2
+#
+# Takes as input:
+# 1. authority keys as gentoo-auth.asc (sec-keys/openpgp-keys-gentoo-auth);
+# 2. a downloaded, unverified bundle of active developers from qa-reports.gentoo.org (https://qa-reports.gentoo.org/output/active-devs.gpg);
+#    but this must be converted to ASCII first(!), and
+# 3. an output file (armored).
+#
+# Outputs armored keyring with all expired keys dropped and all keys without
+# a signature from the L2 developer key dropped.
+#
+# Usage: python keyring-mangler.py <gentoo-auth.asc> <active-devs.gpg> <output for armored keys.asc>
+from xml.dom import ValidationErr
+
+import gnupg
+import os
+import sys
+
+AUTHORITY_KEYS = [
+    # Gentoo Authority Key L1
+    "ABD00913019D6354BA1D9A132839FE0D796198B1",
+    # Gentoo Authority Key L2 for Services
+    "18F703D702B1B9591373148C55D3238EC050396E",
+    # Gentoo Authority Key L2 for Developers
+    "2C13823B8237310FA213034930D132FF0FF50EEB",
+]
+
+L2_DEVELOPER_KEY = "30D132FF0FF50EEB"
+
+# logging.basicConfig(level=os.environ.get("LOGLEVEL", "DEBUG"))
+
+gentoo_auth = sys.argv[1]
+active_devs = sys.argv[2]
+armored_output = sys.argv[3]
+
+gpg = gnupg.GPG(verbose=False, gnupghome=os.environ["GNUPGHOME"])
+gpg.encoding = "utf-8"
+
+with open(gentoo_auth, "r", encoding="utf8") as keyring:
+    keys = keyring.read()
+    gpg.import_keys(keys)
+
+gpg.trust_keys([AUTHORITY_KEYS[0]], "TRUST_ULTIMATE")
+
+with open(active_devs, "r", encoding="utf8") as keyring:
+    keys = keyring.read()
+    gpg.import_keys(keys)
+
+# print(keys)
+# print(gpg.list_keys)
+
+good_keys = []
+
+for key in gpg.list_keys(sigs=True):
+    print(f"Checking key={key['keyid']}, uids={key['uids']}")
+
+    # pprint.pprint(key)
+
+    if key["fingerprint"] in AUTHORITY_KEYS:
+        # Just add this in.
+        good_keys.append(key["fingerprint"])
+        continue
+
+    # https://security.stackexchange.com/questions/41208/what-is-the-exact-meaning-of-this-gpg-output-regarding-trust
+    if key["trust"] == "e":
+        # If it's expired, drop the key, as we can't easily then
+        # verify it because of gpg limitations.
+        print(
+            f"Dropping expired {key['keyid']=}, {key['uids']=} (because this prevents validation)"
+        )
+        continue
+
+    if key["trust"] == "-":
+        print(f"Dropping {key['keyid']=}, {key['uids']=} because no trust calculated")
+        continue
+
+    if key["trust"] != "f":
+        print(
+            f"Dropping {key['keyid']=}, {key['uids']=} because not calculated as fully trusted"
+        )
+        continue
+
+    # As a sanity check, make sure each key has a signature from
+    # the L2 developer signing key.
+    got_l2_signature = any(sig[0] == "30D132FF0FF50EEB" for sig in key["sigs"])
+    if not got_l2_signature:
+        raise ValidationErr(f"{key['uids']=} lacks a signature from L2 key!")
+
+    good_keys.append(key["fingerprint"])
+
+with open(armored_output, "w", encoding="utf8") as keyring:
+    keyring.write(gpg.export_keys(good_keys))

diff --git a/sec-keys/openpgp-keys-gentoo-developers/metadata.xml b/sec-keys/openpgp-keys-gentoo-developers/metadata.xml
new file mode 100644
index 000000000000..7efb31b9e7f2
--- /dev/null
+++ b/sec-keys/openpgp-keys-gentoo-developers/metadata.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>sam@gentoo.org</email>
+		<name>Sam James</name>
+	</maintainer>
+	<stabilize-allarches/>
+</pkgmetadata>

diff --git a/sec-keys/openpgp-keys-gentoo-developers/openpgp-keys-gentoo-developers-20220711.ebuild b/sec-keys/openpgp-keys-gentoo-developers/openpgp-keys-gentoo-developers-20220711.ebuild
new file mode 100644
index 000000000000..4ff65eaaea85
--- /dev/null
+++ b/sec-keys/openpgp-keys-gentoo-developers/openpgp-keys-gentoo-developers-20220711.ebuild
@@ -0,0 +1,214 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{9..11} )
+inherit edo python-any-r1
+
+DESCRIPTION="Gentoo Authority Keys (GLEP 79)"
+HOMEPAGE="https://www.gentoo.org/downloads/signatures/"
+if [[ ${PV} == 9999* ]] ; then
+	SRC_URI="https://qa-reports.gentoo.org/output/active-devs.gpg -> ${P}-active-devs.gpg"
+	PROPERTIES="live"
+else
+	SRC_URI="https://qa-reports.gentoo.org/output/keys/active-devs-${PV}.gpg -> ${P}-active-devs.gpg"
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~x86"
+fi
+
+S="${WORKDIR}"
+
+LICENSE="public-domain"
+SLOT="0"
+IUSE="test"
+RESTRICT="!test? ( test )"
+
+BDEPEND="
+	$(python_gen_any_dep 'dev-python/python-gnupg[${PYTHON_USEDEP}]')
+	sec-keys/openpgp-keys-gentoo-auth
+	test? (
+		app-crypt/gnupg
+	)
+"
+
+python_check_deps() {
+	python_has_version "dev-python/python-gnupg[${PYTHON_USEDEP}]"
+}
+
+src_compile() {
+	export GNUPGHOME="${T}"/.gnupg
+
+	local mygpgargs=(
+		--no-autostart
+		--no-default-keyring
+		--homedir "${GNUPGHOME}"
+	)
+
+	# From verify-sig.eclass:
+	# "GPG upstream knows better than to follow the spec, so we can't
+	# override this directory.  However, there is a clean fallback
+	# to GNUPGHOME."
+	addpredict /run/user
+
+	mkdir "${GNUPGHOME}" || die
+	chmod 700 "${GNUPGHOME}" || die
+
+	# Convert the binary keyring into an armored one so we can process it
+	edo gpg "${mygpgargs[@]}" --import "${DISTDIR}"/${P}-active-devs.gpg
+	edo gpg "${mygpgargs[@]}" --export --armor > "${WORKDIR}"/gentoo-developers.asc
+
+	# Now strip out the keys which are expired and/or missing a signature
+	# from our L2 developer authority key
+	edo "${EPYTHON}" "${FILESDIR}"/keyring-mangler.py \
+			"${BROOT}"/usr/share/openpgp-keys/gentoo-auth.asc \
+			"${WORKDIR}"/gentoo-developers.asc \
+			"${WORKDIR}"/gentoo-developers-sanitised.asc
+}
+
+src_test() {
+	export GNUPGHOME="${T}"/tests/.gnupg
+
+	local mygpgargs=(
+		# We don't have --no-autostart here because we need
+		# to let it spawn an agent for the key generation.
+		--no-default-keyring
+		--homedir "${GNUPGHOME}"
+	)
+
+	# From verify-sig.eclass:
+	# "GPG upstream knows better than to follow the spec, so we can't
+	# override this directory.  However, there is a clean fallback
+	# to GNUPGHOME."
+	addpredict /run/user
+
+	# Check each of the keys to verify they're trusted by
+	# the L2 developer key.
+	mkdir -p "${GNUPGHOME}" || die
+	chmod 700 "${GNUPGHOME}" || die
+	cd "${T}"/tests || die
+
+	# First, grab the L1 key, and mark it as ultimately trusted.
+	edo gpg "${mygpgargs[@]}" --import "${BROOT}"/usr/share/openpgp-keys/gentoo-auth.asc
+	edo gpg "${mygpgargs[@]}" --import-ownertrust "${BROOT}"/usr/share/openpgp-keys/gentoo-auth-ownertrust.txt
+
+	# Generate a temporary key which isn't signed by anything to check
+	# whether we're detecting unexpected keys.
+	#
+	# The test is whether this appears in the sanitised keyring we
+	# produce in src_compile (it should not be in there).
+	#
+	# https://www.gnupg.org/documentation/manuals/gnupg/Unattended-GPG-key-generation.html
+	edo gpg "${mygpgargs[@]}" --batch --gen-key <<-EOF
+		%echo Generating temporary key for testing...
+
+		%no-protection
+		%transient-key
+		%pubring ${P}-ebuild-test-key.asc
+
+		Key-Type: 1
+		Key-Length: 2048
+		Subkey-Type: 1
+		Subkey-Length: 2048
+		Name-Real: Larry The Cow
+		Name-Email: larry@example.com
+		Expire-Date: 0
+		Handle: ${P}-ebuild-test-key
+
+		%commit
+		%echo Temporary key generated!
+	EOF
+
+	# Import the new injected key that shouldn't be signed by anything into a temporary testing keyring
+	edo gpg "${mygpgargs[@]}" --import "${T}"/tests/${P}-ebuild-test-key.asc
+
+	# Sign a tiny file with the to-be-injected key for testing rejection below
+	echo "Hello world!" > "${T}"/tests/signme || die
+	edo gpg "${mygpgargs[@]}" -u "Larry The Cow <larry@example.com>" --sign "${T}"/tests/signme || die
+
+	edo gpg "${mygpgargs[@]}" --export --armor > "${T}"/tests/tainted-keyring.asc
+
+	# keyring-mangler.py should now produce a keyring *without* it
+	edo "${EPYTHON}" "${FILESDIR}"/keyring-mangler.py \
+			"${BROOT}"/usr/share/openpgp-keys/gentoo-auth.asc \
+			"${T}"/tests/tainted-keyring.asc \
+			"${T}"/tests/gentoo-developers-sanitised.asc | tee "${T}"/tests/keyring-mangler.log
+	assert "Key mangling in tests failed?"
+
+	# Check the log to verify the injected key got detected
+	grep -q "Dropping key.*Larry The Cow" "${T}"/tests/keyring-mangler.log || die "Did not remove injected key from test keyring!"
+
+	# gnupg doesn't have an easy way for us to actually just.. ask
+	# if a key is known via WoT. So, sign a file using the key
+	# we just made, and then try to gpg --verify it, and check exit code.
+	#
+	# Let's now double check by seeing if a file signed by the injected key
+	# is rejected.
+	if gpg "${mygpgargs[@]}" --keyring "${T}"/tests/gentoo-developers-sanitised.asc --verify "${T}"/tests/signme.gpg ; then
+		die "'gpg --verify' using injected test key succeeded! This shouldn't happen!"
+	fi
+
+	# Bonus lame sanity check
+	edo gpg "${mygpgargs[@]}" --check-trustdb 2>&1 | tee "${T}"/tests/trustdb.log
+	assert "trustdb call failed!"
+
+	check_trust_levels() {
+		local mode=${1}
+
+		while IFS= read -r line; do
+			# gpg: depth: 0  valid:   1  signed:   2  trust: 0-, 0q, 0n, 0m, 0f, 1u
+			# gpg: depth: 1  valid:   2  signed:   0  trust: 0-, 0q, 0n, 0m, 2f, 0u
+			if [[ ${line} == *depth* ]] ; then
+				depth=$(echo ${line} | grep -Po "depth: [0-9]")
+				trust=$(echo ${line} | grep -Po "trust:.*")
+
+				trust_uncalculated=$(echo ${trust} | grep -Po "[0-9]-")
+				[[ ${trust_uncalculated} == 0 ]] || ${mode}
+
+				trust_insufficient=$(echo ${trust} | grep -Po "[0-9]q")
+				[[ ${trust_insufficient} == 0 ]] || ${mode}
+
+				trust_never=$(echo ${trust} | grep -Po "[0-9]n")
+				[[ ${trust_never} == 0 ]] || ${mode}
+
+				trust_marginal=$(echo ${trust} | grep -Po "[0-9]m")
+				[[ ${trust_marginal} == 0 ]] || ${mode}
+
+				trust_full=$(echo ${trust} | grep -Po "[0-9]f")
+				[[ ${trust_full} != 0 ]] || ${mode}
+
+				trust_ultimate=$(echo ${trust} | grep -Po "[0-9]u")
+				[[ ${trust_ultimate} == 1 ]] || ${mode}
+
+				echo "${trust_uncalculated}, ${trust_insufficient}"
+			fi
+		done < "${T}"/tests/trustdb.log
+	}
+
+	# First, check with the bad key still in the test keyring.
+	# This is supposed to fail, so we want it to return 1
+	check_trust_levels "return 1" && die "Trustdb passed when it should have failed!"
+
+	# Now check without the bad key in the test keyring.
+	# This one should pass.
+	#
+	# Drop the bad key first (https://superuser.com/questions/174583/how-to-delete-gpg-secret-keys-by-force-without-fingerprint)
+	keys=$(gpg "${mygpgargs[@]}" --fingerprint --with-colons --batch "Larry The Cow <larry@example.com>" \
+		| grep "^fpr" \
+		| sed -n 's/^fpr:::::::::\([[:alnum:]]\+\):/\1/p')
+
+	for key in ${keys[@]} ; do
+		nonfatal edo gpg "${mygpgargs[@]}" --batch --yes --delete-secret-keys ${key}
+	done
+
+	edo gpg "${mygpgargs[@]}" --batch --yes --delete-keys "Larry The Cow <larry@example.com>"
+	check_trust_levels "return 0" || die "Trustdb failed when it should have passed!"
+
+	gpgconf --kill gpg-agent || die
+}
+
+src_install() {
+	insinto /usr/share/openpgp-keys
+	newins gentoo-developers-sanitised.asc gentoo-developers.asc
+
+	# TODO: install an ownertrust file like sec-keys/openpgp-keys-gentoo-auth?
+}

diff --git a/sec-keys/openpgp-keys-gentoo-developers/openpgp-keys-gentoo-developers-99999999.ebuild b/sec-keys/openpgp-keys-gentoo-developers/openpgp-keys-gentoo-developers-99999999.ebuild
new file mode 100644
index 000000000000..e1500e00b9e0
--- /dev/null
+++ b/sec-keys/openpgp-keys-gentoo-developers/openpgp-keys-gentoo-developers-99999999.ebuild
@@ -0,0 +1,214 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{9..11} )
+inherit edo python-any-r1
+
+DESCRIPTION="Gentoo Authority Keys (GLEP 79)"
+HOMEPAGE="https://www.gentoo.org/downloads/signatures/"
+if [[ ${PV} == 9999* ]] ; then
+	SRC_URI="https://qa-reports.gentoo.org/output/active-devs.gpg -> ${P}-active-devs.gpg"
+	PROPERTIES="live"
+else
+	SRC_URI="https://qa-reports.gentoo.org/output/keys/active-devs-${PV}.gpg -> ${P}-active-devs.gpg"
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+fi
+
+S="${WORKDIR}"
+
+LICENSE="public-domain"
+SLOT="0"
+IUSE="test"
+RESTRICT="!test? ( test )"
+
+BDEPEND="
+	$(python_gen_any_dep 'dev-python/python-gnupg[${PYTHON_USEDEP}]')
+	sec-keys/openpgp-keys-gentoo-auth
+	test? (
+		app-crypt/gnupg
+	)
+"
+
+python_check_deps() {
+	python_has_version "dev-python/python-gnupg[${PYTHON_USEDEP}]"
+}
+
+src_compile() {
+	export GNUPGHOME="${T}"/.gnupg
+
+	local mygpgargs=(
+		--no-autostart
+		--no-default-keyring
+		--homedir "${GNUPGHOME}"
+	)
+
+	# From verify-sig.eclass:
+	# "GPG upstream knows better than to follow the spec, so we can't
+	# override this directory.  However, there is a clean fallback
+	# to GNUPGHOME."
+	addpredict /run/user
+
+	mkdir "${GNUPGHOME}" || die
+	chmod 700 "${GNUPGHOME}" || die
+
+	# Convert the binary keyring into an armored one so we can process it
+	edo gpg "${mygpgargs[@]}" --import "${DISTDIR}"/${P}-active-devs.gpg
+	edo gpg "${mygpgargs[@]}" --export --armor > "${WORKDIR}"/gentoo-developers.asc
+
+	# Now strip out the keys which are expired and/or missing a signature
+	# from our L2 developer authority key
+	edo "${EPYTHON}" "${FILESDIR}"/keyring-mangler.py \
+			"${BROOT}"/usr/share/openpgp-keys/gentoo-auth.asc \
+			"${WORKDIR}"/gentoo-developers.asc \
+			"${WORKDIR}"/gentoo-developers-sanitised.asc
+}
+
+src_test() {
+	export GNUPGHOME="${T}"/tests/.gnupg
+
+	local mygpgargs=(
+		# We don't have --no-autostart here because we need
+		# to let it spawn an agent for the key generation.
+		--no-default-keyring
+		--homedir "${GNUPGHOME}"
+	)
+
+	# From verify-sig.eclass:
+	# "GPG upstream knows better than to follow the spec, so we can't
+	# override this directory.  However, there is a clean fallback
+	# to GNUPGHOME."
+	addpredict /run/user
+
+	# Check each of the keys to verify they're trusted by
+	# the L2 developer key.
+	mkdir -p "${GNUPGHOME}" || die
+	chmod 700 "${GNUPGHOME}" || die
+	cd "${T}"/tests || die
+
+	# First, grab the L1 key, and mark it as ultimately trusted.
+	edo gpg "${mygpgargs[@]}" --import "${BROOT}"/usr/share/openpgp-keys/gentoo-auth.asc
+	edo gpg "${mygpgargs[@]}" --import-ownertrust "${BROOT}"/usr/share/openpgp-keys/gentoo-auth-ownertrust.txt
+
+	# Generate a temporary key which isn't signed by anything to check
+	# whether we're detecting unexpected keys.
+	#
+	# The test is whether this appears in the sanitised keyring we
+	# produce in src_compile (it should not be in there).
+	#
+	# https://www.gnupg.org/documentation/manuals/gnupg/Unattended-GPG-key-generation.html
+	edo gpg "${mygpgargs[@]}" --batch --gen-key <<-EOF
+		%echo Generating temporary key for testing...
+
+		%no-protection
+		%transient-key
+		%pubring ${P}-ebuild-test-key.asc
+
+		Key-Type: 1
+		Key-Length: 2048
+		Subkey-Type: 1
+		Subkey-Length: 2048
+		Name-Real: Larry The Cow
+		Name-Email: larry@example.com
+		Expire-Date: 0
+		Handle: ${P}-ebuild-test-key
+
+		%commit
+		%echo Temporary key generated!
+	EOF
+
+	# Import the new injected key that shouldn't be signed by anything into a temporary testing keyring
+	edo gpg "${mygpgargs[@]}" --import "${T}"/tests/${P}-ebuild-test-key.asc
+
+	# Sign a tiny file with the to-be-injected key for testing rejection below
+	echo "Hello world!" > "${T}"/tests/signme || die
+	edo gpg "${mygpgargs[@]}" -u "Larry The Cow <larry@example.com>" --sign "${T}"/tests/signme || die
+
+	edo gpg "${mygpgargs[@]}" --export --armor > "${T}"/tests/tainted-keyring.asc
+
+	# keyring-mangler.py should now produce a keyring *without* it
+	edo "${EPYTHON}" "${FILESDIR}"/keyring-mangler.py \
+			"${BROOT}"/usr/share/openpgp-keys/gentoo-auth.asc \
+			"${T}"/tests/tainted-keyring.asc \
+			"${T}"/tests/gentoo-developers-sanitised.asc | tee "${T}"/tests/keyring-mangler.log
+	assert "Key mangling in tests failed?"
+
+	# Check the log to verify the injected key got detected
+	grep -q "Dropping key.*Larry The Cow" "${T}"/tests/keyring-mangler.log || die "Did not remove injected key from test keyring!"
+
+	# gnupg doesn't have an easy way for us to actually just.. ask
+	# if a key is known via WoT. So, sign a file using the key
+	# we just made, and then try to gpg --verify it, and check exit code.
+	#
+	# Let's now double check by seeing if a file signed by the injected key
+	# is rejected.
+	if gpg "${mygpgargs[@]}" --keyring "${T}"/tests/gentoo-developers-sanitised.asc --verify "${T}"/tests/signme.gpg ; then
+		die "'gpg --verify' using injected test key succeeded! This shouldn't happen!"
+	fi
+
+	# Bonus lame sanity check
+	edo gpg "${mygpgargs[@]}" --check-trustdb 2>&1 | tee "${T}"/tests/trustdb.log
+	assert "trustdb call failed!"
+
+	check_trust_levels() {
+		local mode=${1}
+
+		while IFS= read -r line; do
+			# gpg: depth: 0  valid:   1  signed:   2  trust: 0-, 0q, 0n, 0m, 0f, 1u
+			# gpg: depth: 1  valid:   2  signed:   0  trust: 0-, 0q, 0n, 0m, 2f, 0u
+			if [[ ${line} == *depth* ]] ; then
+				depth=$(echo ${line} | grep -Po "depth: [0-9]")
+				trust=$(echo ${line} | grep -Po "trust:.*")
+
+				trust_uncalculated=$(echo ${trust} | grep -Po "[0-9]-")
+				[[ ${trust_uncalculated} == 0 ]] || ${mode}
+
+				trust_insufficient=$(echo ${trust} | grep -Po "[0-9]q")
+				[[ ${trust_insufficient} == 0 ]] || ${mode}
+
+				trust_never=$(echo ${trust} | grep -Po "[0-9]n")
+				[[ ${trust_never} == 0 ]] || ${mode}
+
+				trust_marginal=$(echo ${trust} | grep -Po "[0-9]m")
+				[[ ${trust_marginal} == 0 ]] || ${mode}
+
+				trust_full=$(echo ${trust} | grep -Po "[0-9]f")
+				[[ ${trust_full} != 0 ]] || ${mode}
+
+				trust_ultimate=$(echo ${trust} | grep -Po "[0-9]u")
+				[[ ${trust_ultimate} == 1 ]] || ${mode}
+
+				echo "${trust_uncalculated}, ${trust_insufficient}"
+			fi
+		done < "${T}"/tests/trustdb.log
+	}
+
+	# First, check with the bad key still in the test keyring.
+	# This is supposed to fail, so we want it to return 1
+	check_trust_levels "return 1" && die "Trustdb passed when it should have failed!"
+
+	# Now check without the bad key in the test keyring.
+	# This one should pass.
+	#
+	# Drop the bad key first (https://superuser.com/questions/174583/how-to-delete-gpg-secret-keys-by-force-without-fingerprint)
+	keys=$(gpg "${mygpgargs[@]}" --fingerprint --with-colons --batch "Larry The Cow <larry@example.com>" \
+		| grep "^fpr" \
+		| sed -n 's/^fpr:::::::::\([[:alnum:]]\+\):/\1/p')
+
+	for key in ${keys[@]} ; do
+		nonfatal edo gpg "${mygpgargs[@]}" --batch --yes --delete-secret-keys ${key}
+	done
+
+	edo gpg "${mygpgargs[@]}" --batch --yes --delete-keys "Larry The Cow <larry@example.com>"
+	check_trust_levels "return 0" || die "Trustdb failed when it should have passed!"
+
+	gpgconf --kill gpg-agent || die
+}
+
+src_install() {
+	insinto /usr/share/openpgp-keys
+	newins gentoo-developers-sanitised.asc gentoo-developers.asc
+
+	# TODO: install an ownertrust file like sec-keys/openpgp-keys-gentoo-auth?
+}