diff options
| author | David Kalnischkies <david@kalnischkies.de> | 2015-06-24 19:31:22 +0200 |
|---|---|---|
| committer | David Kalnischkies <david@kalnischkies.de> | 2015-08-10 17:25:26 +0200 |
| commit | b0d408547734100bf86781615f546487ecf390d9 (patch) | |
| tree | 8e88e2394ce15a4ac5a070b59a0cf4b74d748859 /cmdline | |
| parent | 0741daeb7ab870b4dd62a93fa12a1cf6330f9a72 (diff) | |
implement Signed-By option for sources.list
Limits which key(s) can be used to sign a repository. Not immensely useful
from a security perspective all by itself, but if the user has
additional measures in place to confine a repository (like pinning) an
attacker who gets the key for such a repository is limited to its
potential and can't use the key to sign its attacks for an other (maybe
less limited) repository… (yes, this is as weak as it sounds, but having
the capability might come in handy for implementing other stuff later).
Diffstat (limited to 'cmdline')
| -rw-r--r-- | cmdline/apt-key.in | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/cmdline/apt-key.in b/cmdline/apt-key.in index 2a66ad74d..16887bd50 100644 --- a/cmdline/apt-key.in +++ b/cmdline/apt-key.in @@ -199,7 +199,7 @@ remove_key_from_keyring() { foreach_keyring_do() { local ACTION="$1" shift - # if a --keyring was given, just remove from there + # if a --keyring was given, just work on this one if [ -n "$FORCED_KEYRING" ]; then $ACTION "$FORCED_KEYRING" "$@" else @@ -279,7 +279,14 @@ merge_back_changes() { } setup_merged_keyring() { - if [ -z "$FORCED_KEYRING" ]; then + if [ -n "$FORCED_KEYID" ]; then + foreach_keyring_do 'import_keys_from_keyring' "${GPGHOMEDIR}/allrings.gpg" + FORCED_KEYRING="${GPGHOMEDIR}/forcedkeyid.gpg" + TRUSTEDFILE="${FORCED_KEYRING}" + GPG="$GPG --keyring $TRUSTEDFILE" + # ignore error as this "just" means we haven't found the forced keyid and the keyring will be empty + $GPG_CMD --batch --yes --keyring "${GPGHOMEDIR}/allrings.gpg" --export "$FORCED_KEYID" | $GPG --batch --yes --import || true + elif [ -z "$FORCED_KEYRING" ]; then foreach_keyring_do 'import_keys_from_keyring' "${GPGHOMEDIR}/pubring.gpg" if [ -r "${GPGHOMEDIR}/pubring.gpg" ]; then cp -a "${GPGHOMEDIR}/pubring.gpg" "${GPGHOMEDIR}/pubring.orig.gpg" @@ -328,12 +335,17 @@ while [ -n "$1" ]; do TRUSTEDFILE="$1" FORCED_KEYRING="$1" ;; + --keyid) + shift + FORCED_KEYID="$1" + ;; --secret-keyring) shift FORCED_SECRET_KEYRING="$1" ;; --readonly) merge_back_changes() { true; } + create_new_keyring() { true; } ;; --fakeroot) requires_root() { true; } @@ -460,7 +472,11 @@ case "$command" in verify) setup_merged_keyring if which gpgv >/dev/null 2>&1; then - gpgv --homedir "${GPGHOMEDIR}" --keyring "${GPGHOMEDIR}/pubring.gpg" --ignore-time-conflict "$@" + if [ -n "$FORCED_KEYRING" ]; then + gpgv --homedir "${GPGHOMEDIR}" --keyring "${FORCED_KEYRING}" --ignore-time-conflict "$@" + else + gpgv --homedir "${GPGHOMEDIR}" --keyring "${GPGHOMEDIR}/pubring.gpg" --ignore-time-conflict "$@" + fi else $GPG --verify "$@" fi |