* g10/revoke.c (gen_desig_revoke): Add additional parameter ctrl.
Check that the secret key is available. If not, display an error
message.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
Regression-due-to: 8459bcf9
* g10/main.h: Improve function documentation.
* g10/packet.h.h: Improve function documentation.
* g10/sig-check.c: Improve function documentation and some comments.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/misc.c (print_md5_rejected_note): Rename to ..
(print_digest_rejected_note): this. Parameterize function to take an
enum gcry_md_algos.
* g10/sig-check.c: Use print_digest_rejected_note() when rejecting
signatures.
--
76afaed65e allowed extra --weak-digests,
but removed the one call to print_md5_rejected_note(). This replaces
and generalizes that warning.
Signed-Off-By: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
* g10/options.h: Add additional_weak_digests linked list to opts.
* g10/main.h: Declare weakhash linked list struct and
additional_weak_digest() function to insert newly-declared weak
digests into opts.
* g10/misc.c: (additional_weak_digest): New function.
(print_digest_algo_note): Check for deprecated digests; use proper
gcry_md_algos type.
* g10/sig-check.c: (do_check): Reject weak digests in addition to MD5.
* g10/gpg.c: Add --weak-digest option to gpg.
* doc/gpg.texi: Document gpg --weak-digest option.
* g10/gpgv.c: Add --weak-digest option to gpgv.
* doc/gpgv.texi: Document gpgv --weak-digest option.
--
gpg and gpgv treat signatures made over MD5 as unreliable, unless the
user supplies --allow-weak-digests to gpg. Signatures over any other
digest are considered acceptable.
Despite SHA-1 being a mandatory-to-implement digest algorithm in RFC
4880, the collision-resistance of SHA-1 is weaker than anyone would
like it to be.
Some operators of high-value targets that depend on OpenPGP signatures
may wish to require their signers to use a stronger digest algorithm
than SHA1, even if the OpenPGP ecosystem at large cannot deprecate
SHA1 entirely today.
This changeset adds a new "--weak-digest DIGEST" option for both gpg
and gpgv, which makes it straightforward for anyone to treat any
signature or certification made over the specified digest as
unreliable.
This option can be supplied multiple times if the operator wishes to
deprecate multiple digest algorithms, and will be ignored completely
if the operator supplies --allow-weak-digests (as before).
MD5 is still always considered weak, regardless of any further
--weak-digest options supplied.
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
Capitialized some comments, shorted a line in do_check, and changed
subject to name the option. -wk
* g10/tofu.c (get_trust): If a conflict occurs when MAY_ASK is false,
set conflict to the key. When prompting the user, don't show the
conflicting key if the conflicting key is the current key.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/trustdb.c (tdb_get_validity_core): Silence a warning.
* g10/tofu.c (tofu_register): Move SIG_DIGEST computation to the top
so that it is not uninitialized in case of an early error.
Signed-off-by: Werner Koch <wk@gnupg.org>
* configure.ac: Check for sqlite3.
(SQLITE3_CFLAGS): AC_SUBST it.
(SQLITE3_LIBS): Likewise.
* g10/Makefile.am (AM_CFLAGS): Add $(SQLITE3_CFLAGS).
(gpg2_SOURCES): Add tofu.h and tofu.c.
(gpg2_LDADD): Add $(SQLITE3_LIBS).
* g10/tofu.c: New file.
* g10/tofu.h: New file.
* g10/options.h (trust_model): Define TM_TOFU and TM_TOFU_PGP.
(tofu_db_format): Define.
* g10/packet.h (PKT_signature): Add fields digest and digest_len.
* g10/gpg.c: Include "tofu.h".
(cmd_and_opt_values): Declare aTOFUPolicy, oTOFUDefaultPolicy,
oTOFUDBFormat.
(opts): Add them.
(parse_trust_model): Recognize the tofu and tofu+pgp trust models.
(parse_tofu_policy): New function.
(parse_tofu_db_format): New function.
(main): Initialize opt.tofu_default_policy and opt.tofu_db_format.
Handle aTOFUPolicy, oTOFUDefaultPolicy and oTOFUDBFormat.
* g10/mainproc.c (do_check_sig): If the signature is good, copy the
hash to SIG->DIGEST and set SIG->DIGEST_LEN appropriately.
* g10/trustdb.h (get_validity): Add arguments sig and may_ask. Update
callers.
(tdb_get_validity_core): Add arguments sig and may_ask. Update
callers.
* g10/trust.c (get_validity) Add arguments sig and may_ask. Pass them
to tdb_get_validity_core.
* g10/trustdb.c: Include "tofu.h".
(trust_model_string): Handle TM_TOFU and TM_TOFU_PGP.
(tdb_get_validity_core): Add arguments sig and may_ask. If
OPT.TRUST_MODEL is TM_TOFU or TM_TOFU_PGP, compute the TOFU trust
level. Combine it with the computed PGP trust level, if appropriate.
* g10/keyedit.c: Include "tofu.h".
(show_key_with_all_names_colon): If the trust mode is tofu or
tofu+pgp, then show the trust policy.
* g10/keylist.c: Include "tofu.h".
(public_key_list): Also show the PGP stats if the trust model is
TM_TOFU_PGP.
(list_keyblock_colon): If the trust mode is tofu or
tofu+pgp, then show the trust policy.
* g10/pkclist.c: Include "tofu.h".
* g10/gpgv.c (get_validity): Add arguments sig and may_ask.
(enum tofu_policy): Define.
(tofu_get_policy): New stub.
(tofu_policy_str): Likewise.
* g10/test-stubs.c (get_validity): Add arguments sig and may_ask.
(enum tofu_policy): Define.
(tofu_get_policy): New stub.
(tofu_policy_str): Likewise.
* doc/DETAILS: Describe the TOFU Policy field.
* doc/gpg.texi: Document --tofu-set-policy, --trust-model=tofu,
--trust-model=tofu+pgp, --tofu-default-policy and --tofu-db-format.
* tests/openpgp/Makefile.am (TESTS): Add tofu.test.
(TEST_FILES): Add tofu-keys.asc, tofu-keys-secret.asc,
tofu-2183839A-1.txt, tofu-BC15C85A-1.txt and tofu-EE37CF96-1.txt.
(CLEANFILES): Add tofu.db.
(clean-local): Add tofu.d.
* tests/openpgp/tofu.test: New file.
* tests/openpgp/tofu-2183839A-1.txt: New file.
* tests/openpgp/tofu-BC15C85A-1.txt: New file.
* tests/openpgp/tofu-EE37CF96-1.txt: New file.
* tests/openpgp/tofu-keys.asc: New file.
* tests/openpgp/tofu-keys-secret.asc: New file.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
* g10/encrypt.c (use_mdc): Make it a global func.
* g10/sign.c (sign_symencrypt_file): Use that function to decide
whether to use an MDC.
* tests/openpgp/conventional-mdc.test: Add a simple test case.
--
We used --force-mdc in sign+symenc mode (-cs) only with --force-mdc.
That broke our assumption from commit 625e292 (GnuPG 2.1.9) that all
uses of modern ciphers are using MDC.
Reported-by: Ben Kibbey <bjk@luxsci.net>
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/options.h (opt): Add field "print_dane_records".
* g10/gpg.c (oPrintDANERecords): new.
(opts): Add --print-dane-records.
(main): Set that option.
* g10/export.c (do_export): Remove EXPORT_DANE_FORMAT handling.
(do_export_stream): Add EXPORT_DANE_FORMAT handling.
* g10/keylist.c (list_keyblock_pka): Implement DANE record printing.
* g10/gpgv.c (export_pubkey_buffer): New stub.
* g10/test-stubs.c (export_pubkey_buffer): New stub.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/dirmngr.c (parse_rereadable_options): Do tilde expansion and
check for cert file existance in option --hkp-cacert.
--
GnuPG-bug-id: 2120
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/mainproc.c (proc_encrypted): Fail for modern messages w/o MDC.
--
This change turns the missing MDC warning into an error if the message
has been encrypted using a cipher with a non-64 bit block length cipher
and it is not Twofish.
We can assume that such messages are created by code which should have
been able to create MDC packets. AES was introduced with 1.0.3 on
2000-09-18 shortly after MDC (1.0.2 on 2000-07-12). We need to
exclude Twofish because that might have been used before MDC.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/dirmngr-conf.skel: New.
* g10/Makefile.am (EXTRA_DIST): Add file.
(install-data-local, uninstall-local): Install that file.
* g10/openfile.c (copy_options_file): Add arg "name", return a value,
simplify with xstrconcat, and factor warning message out to:
(try_make_homedir): here. Also install dirmngr.conf.
* g10/options.skel: Remove --keyserver entry.
--
The option --keyserver in gpg has been deprecated in favor of
--keyserver in dirmngr.conf. Thus we need to install a skeleton file
for dirmngr to set a default keyserver.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/keyserver.c (keyserver_refresh): Change return type to
gpg_error_t. Use gpg_dirmngr_ks_list to print the name of the
keyserver to use.
(keyserver_search): Do not print the "no keyserver" error
message. The same error is anyway returned from dirmngr.
* g10/call-dirmngr.c (ks_status_parm_s): Add field "keyword".
(ks_status_cb): Handle other status keywords.
(gpg_dirmngr_ks_list): New.
* tools/gpgconf-comp.c (gc_options_gpg): Deprecate "keyserver".
(gc_options_dirmngr): Add "Keyserver" group and "keyserver".
--
Along with the corresponding dirmngr change this option allows to
configure the keyserver only in dirmngr.conf. Existing
configurations will continue to work. However, GUIs using gpgconf
now the keyserver option under the dirmngr (aka Key Acquirer) tab
unless they are in export mode in which the keyserver option is also
show for gpg.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/keyedit.c (print_and_check_one_sig): Add arg "extended" and
print an asterisk for the chosen selfsig.
(check_all_keysigs): Add arg "only_selfsig"
(keyedit_menu) <cmdCHECK>: Add optional arg "selfsig".
--
Using "check selfsig" prints only the self-signatures and indicates
the chosen selfsig with an asterisk.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/sig-check.c (signature_check2): Avoid copying PK to RET_PK.
Instead, directly use the provided storage. If none is provided
allocate some.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
* g10/sign.c (do_sign): Let verify signature by gpg-agent.
* agent/pksign.c (agent_pksign_do): Call gcry_pk_verify for RSA.
--
RSA signature verification should be done to prevent attacks against
RSA CRT implementations and not to return invalid signature to
adversary. Newer libgcrypt does so. For older libgcrypt and
smartcards, gpg-agent does signature verification.
* g10/call-dirmngr.c (create_context): Send option and print a verbose
error.
--
It is in general a bad idea to use honor-keyserver-url but if Dirmngr
is running in TOR mode we should not allow this option at all. We let
Dirmngr know about the use of this option and let Dirmngr tell use
whether TOR mode is active so that we can print a hint to disable that
keyserver option.
A future extension in gpgconf may disable that option directly but a
user may still override that and thus we better check.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/trustdb.c (search_skipfnc): Fix dummy argument
--
This is required due to the prototype change in
commit 9acbeac236
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/keyedit.c (keyedit_menu): When complaining that a user ID or key
must be selected, indicate what command to use to do this.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
* g10/getkey.c (merge_selfsigs_main): Stop looking for self-signed
data belonging to the public key when we encounter an attribute packet
or a subkey packet, not just a user id packet. When looking for
self-signed data belonging to a user id packet, stop when we see a
user attribute packet.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
* g10/getkey.c (skip_unusable): Also mark the key as unusable if it
has been revoked or has expired.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
* g10/getkey.c: Improve documentation and comments for most
functions. Move documentation for public functions from here...
* g10/keydb.h: ... to here.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
* g10/getkey.c (have_secret_key_with_kid): Once we find the relevent
key or subkey, stop searching.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
Only a single key or subkey will ever be selected per keyblock.
* g10/getkey.c (lookup): Also don't skip legacy keys if the search
mode is KEYDB_SEARCH_MODE_NEXT.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
We currently don't skip keys if the search mode is
KEYDB_SEARCH_MODE_FIRST. Since we change KEYDB_SEARCH_MODE_FIRST to
KEYDB_SEARCH_MODE_NEXT (to avoid a reset), it only makes sense to have
the same semantics for KEYDB_SEARCH_MODE_NEXT.
* g10/keydb.h (get_seckey_byname): Rename from this...
(get_seckey_default): ... to this. Drop the parameter name. Update
users.
* g10/getkey.c (get_seckey_byname): Rename from this...
(get_seckey_default): ... to this. Drop the parameter name. Drop the
code which assumed that NAME is not NULL.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
* g10/keydb.h (get_keyblock_byfprint): Remove prototype. Replace use
of this function with get_pubkey_byfprint.
* g10/getkey.c (get_pubkey_byname): Remove function.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
* g10/getkey.c (get_pubkey_byname): If R_KEYBLOCK is not NULL, return
the keyblock in R_KEYBLOCK independent of whether PK is set or not.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
Currently, no caller invokes get_pubkey_byname with PK==NULL and
R_KEYBLOCK != NULL. Thus, this change does not change any behavior.
* g10/getkey.c (get_pubkey_byname): Remove function.
(lookup): Replace use of get_pubkey_byname by get_pubkey_byfprint.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
* g10/keydb.h (get_pubkey_end): Remove declaration. Replace use of
function with getkey_end.
* g10/getkey.c (get_pubkey_byname): Remove function.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
