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56 Commits

Author SHA1 Message Date
NIIBE Yutaka
9128d81bb7
agent:kem:ecc: Support a key on smartcard.
* agent/agent.h (agent_card_ecc_kem): New.
* agent/divert-scd.c (agent_card_ecc_kem): New.
* agent/pkdecrypt.c (ecc_extract_pk_from_key): New.
(ecc_extract_sk_from_key): New.
(ecc_raw_kem, get_cardkey, ecc_get_curve): New.
(ecc_pgp_kem_decrypt): Support a key on smartcard for ECC.
(composite_pgp_kem_decrypt): Handle a case of a key on smartcard.
* common/sexputil.c (get_ecc_curve_from_key): New.
* common/util.h (get_ecc_curve_from_key): New.

--

GnuPG-bug-id: 7097
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2024-04-26 14:18:03 +09:00
NIIBE Yutaka
02b056ef77
agent:kem: Fix memory leaks.
* agent/pkdecrypt.c (composite_pgp_kem_decrypt): Release shadow_info
memory.

--

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2024-04-25 13:51:47 +09:00
NIIBE Yutaka
a45243548e
agent:kem: Factor out ECC KEM operation from composite KEM.
* agent/pkdecrypt.c (ecc_pgp_kem_decrypt): New.
(composite_pgp_kem_decrypt): Use ecc_pgp_kem_decrypt.

--

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2024-04-24 15:08:41 +09:00
NIIBE Yutaka
d1f8caafb4
agent: Simplify diverting operation to the smartcard.
* agent/pkdecrypt.c (agent_pkdecrypt): Remove no_shadow_info variable.

--

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2024-04-24 14:01:41 +09:00
Werner Koch
dd650b2c7b
gpg: Support Kyber with Brainpool512r1.
* common/openpgp-oid.c (oidtable): Add GCRY_KEM_RAW_BP512.
* agent/pkdecrypt.c (ecc_table): Support bp512
* g10/pkglue.c (do_encrypt_kem): Ditto.

* tests/openpgp/samplekeys: Add sample keys for kyber_bp256, bp384,
and bp512.
* tests/openpgp/privkeys: Add corresponding private keys.
* tests/openpgp/samplemsgs:  Add sample messages for those keys.
--

GnuPG-bug-id: 6815
2024-04-23 17:41:28 +02:00
Werner Koch
f305e703d5
Require Libgcrypt 1.11.0
* configure.ac (NEED_LIBGCRYPT_VERSION): Set to 1.11.0
* agent/pkdecrypt.c (struct ecc_params): Move constants to the top.
--

It does not make anymore sense to allow building with older Libgcrypt
versions.  After all PQ key support is a major feature and for this we
need Libgcrypt.
2024-04-23 11:09:40 +02:00
NIIBE Yutaka
af98a3e5fa
agent:kem: More fix for PQC KEM with X448.
* agent/pkdecrypt.c (struct ecc_params): Remove NAME_LEN field.
(ecc_table): Update.
(get_ecc_params): Use strcmp.
(composite_pgp_kem_decrypt): Fix the call of gnupg_kem_combiner.

--

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2024-04-23 16:09:02 +09:00
NIIBE Yutaka
65833eefb2
agent:kem: Support other ML-KEM variants.
* agent/pkdecrypt.c (composite_pgp_kem_decrypt): Care about
ML-KEM 512 and 1024.

--

Co-authored-by: Werner Koch <wk@gnupg.org>
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2024-04-23 14:40:27 +09:00
NIIBE Yutaka
d5c6b52e59
agent:kem: Support other ECC curves.
* agent/pkdecrypt.c (ecc_table): New.
(get_ecc_params): New.
(composite_pgp_kem_decrypt): Support other curves.

--

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2024-04-23 14:23:27 +09:00
Werner Koch
61717fb0a7
agent: Add more diagnostics to PQC decryption.
* agent/pkdecrypt.c (composite_pgp_kem_decrypt): Use %d for
correctness.  Add error diagnostics and one extra check.
--

GnuPG-bug-id: 7014
2024-04-11 15:48:16 +02:00
NIIBE Yutaka
f2fd4f1a9e
agent: Rename the function using the word "composite"
* agent/pkdecrypt.c (composite_pgp_kem_decrypt): Rename.

--

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2024-04-11 15:30:27 +09:00
NIIBE Yutaka
172d53d636
agent: Fix PQC decryption.
* agent/pkdecrypt.c (agent_hybrid_pgp_kem_decrypt): Change the format
of SEXP in the protocol for symmetric cipher algorithm identifier.

--

GnuPG-bug-id: 7014
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2024-04-11 15:30:16 +09:00
NIIBE Yutaka
c21237ac27
agent:kem: Externalize FIXED_INFO.
* agent/pkdecrypt.c (agent_hybrid_pgp_kem_decrypt): Don't hard code
the value of FIXED_INFO.  Get it from frontend.

--

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2024-04-10 12:52:13 +09:00
NIIBE Yutaka
04b81ec236
common,agent: Factor out KEM functions into common/kem.c.
* common/util.h (compute_kmac256): Remove.
(gnupg_ecc_kem_kdf, gnupg_kem_combiner): New.
* common/kmac.c (compute_kmac256): Don't expose.
(gnupg_ecc_kem_kdf, gnupg_kem_combiner): New.
* agent/pkdecrypt.c (agent_hybrid_pgp_kem_decrypt): Use
gnupg_ecc_kem_kdf and gnupg_kem_combiner.

--

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2024-04-10 11:09:29 +09:00
Werner Koch
ce8b25270b
agent: Make "PKDECRYPT --kem" with optional value work.
* agent/command.c (cmd_pkdecrypt): Fix comparison.

* agent/agent.h (enum kemids): Rename type and strip trailing comma.

* agent/pkdecrypt.c (agent_hybrid_pgp_kem_decrypt): Allow building
with Libgcrypt < 1.11
--

Eventually we should change the libgcrypt requirement in configure.
2024-04-05 11:22:38 +02:00
NIIBE Yutaka
131dd2a351
agent: Add initial support for hybrid ECC+PQC decryption with KEM.
* agent/agent.h (enum kemid): New.
(agent_kem_decrypt): New.
* agent/command.c (cmd_pkdecrypt): Support --kem option to call
agent_kem_decrypt.
* agent/pkdecrypt.c (reverse_buffer): New.
(agent_hybrid_pgp_kem_decrypt): New.
(agent_kem_decrypt): New.

--

Now, it only supports X25519 + ML-KEM.

GnuPG-bug-id: 7014
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2024-04-05 14:17:25 +09:00
Werner Koch
1aaadede76
agent: Show "no secret key" instead of "card removed".
* agent/findkey.c (agent_key_from_file): Check the error of
read_key_file again.
* agent/pkdecrypt.c (agent_pkdecrypt): Restore error if no card was
found.  Also remove useless condition.
--

The first patch fixes a likely merge error.  The second is about the
actual return code: If we have no smardcard but simply try to decrypt
with the current smartcard we should return the originla error code.

GnuPG-bug-id: 5170
Fixes-commit: eda3c688fc2e85c7cd63029cb9caf06552d203b4
2023-03-01 16:49:40 +01:00
NIIBE Yutaka
6a37240cf2 agent: Move confirmation handling into findkey.c.
* agent/agent.h (divert_tpm2_pksign, divert_tpm2_pkdecrypt): Fix API.
(divert_pksign, divert_pkdecrypt): Likewise.
* agent/divert-scd.c (ask_for_card): Remove.
(divert_pksign, divert_pkdecrypt): Don't call ask_for_card.
* agent/divert-tpm2.c (divert_tpm2_pksign, divert_tpm2_pkdecrypt):
Remove DESC_TEXT argument.
* agent/findkey.c (prompt_for_card): New (was: ask_for_card).
(agent_key_from_file): Call prompt_for_card when it's a key
on card.
* agent/pkdecrypt.c (agent_pkdecrypt): Follow the change of API.
* agent/pksign.c (agent_pksign_do): Likewise.

--

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2022-05-20 13:43:08 +09:00
NIIBE Yutaka
09357d7eae agent: Supply GRIP=NULL for agent_key_from_file, for real use.
* agent/findkey.c (agent_key_from_file): Change the semantics of
GRIP.  Now, it's NULL for use by PKDECRYPT and PKSIGN/PKAUTH.
* agent/pkdecrypt.c (agent_pkdecrypt): Set GRIP=NULL.
* agent/pksign.c (agent_pksign_do): Likewise.

--

GnuPG-bug-id: 5099
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2022-05-19 14:04:33 +09:00
NIIBE Yutaka
c795be79c1 agent: Use "Created:" field for creation time.
* agent/agent.h (agent_key_from_file): Change the declaration.
* agent/findkey.c (agent_key_from_file): Return timestamp.
* agent/pkdecrypt.c (agent_pkdecrypt): Follow the change.
* agent/pksign.c (agent_pkdecrypt): Likewise.
* agent/command.c (cmd_passwd, cmd_export_key): Likewise.
(cmd_keytocard): Use timestamp in private key file in "Created:".

--

GnuPG-bug-id: 5538
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2022-03-25 14:10:46 +09:00
James Bottomley
1f995b9ba4
agent: Add new shadow key type and functions to call tpm2daemon
* agent/call-tpm2d.c: New.
* divert-tpm2.c: New.
* agent/Makefile.am: Add new files.
* agent/agent.h (DAEMON_TPM2D): New.  Add stub fucntions.
* agent/call-daemon.c (GNUPG_MODULE_NAME_TPM2DAEMON): New.
* agent/command.c (do_one_keyinfo): Handle tpmv2.
* agent/gpg-agent.c (oTpm2daemonProgram): New.
(opts): New option --tpm2daemon-program.
(parse_rereadable_options): Handle option.
* agent/pkdecrypt.c (agent_pkdecrypt): Divert to tpm2d.
(agent_pksign_do): Ditto.
---

A new shadow key type: "tpm2-v1" is introduced signalling that the
shadowed key is handled by the tpm2daemon.  A function to identify
this type is introduced and diversions to the tpm2daemon functions are
conditioned on this function for pkign and pkdecrypt where the same
diversions to scd are currently done.  The (info) field of the
shadowed key stores the actual TPM key.  The TPM key is encrypted so
only the physical TPM it was created on can read it (so no special
protection is required for the info filed), but if the (info) field
becomes corrupt or damaged, the key will be lost (unlike the token
case, where the key is actually moved inside the token).

Note, this commit adds handling for existing TPM format shadow keys,
but there is still no way to create them.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

Additional changes:
* Add ChangeLog entries.
* Some minor indentation fixes.
* agent/Makefile.am (gpg_agent_SOURCES): Change to make distcheck
  work.
* agent/agent.h [!HAVE_LIBTSS]: Do not return -EINVAL but an
  gpg_error_t.  Mark args as unused.
* agent/protect.c (agent_is_tpm2_key): Free BUF.

Signed-off-by: Werner Koch <wk@gnupg.org>
2021-03-10 13:23:05 +01:00
NIIBE Yutaka
eda3c688fc agent: Allow decryption with card but no file.
* agent/pkdecrypt.c (agent_pkdecrypt): Support decryption with card
but without a stub key.

--

GnuPG-bug-id: 5170
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2020-12-08 15:15:45 +09:00
NIIBE Yutaka
9beab36dfa agent: Clean up the API of agent_pkdecrypt.
* agent/agent.h (agent_pkdecrypt): Use gpg_error_t type.
* agent/pkdecrypt.c (agent_pkdecrypt): Use gpg_error_t type.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2020-12-08 15:06:33 +09:00
NIIBE Yutaka
1091f22511 agent: Support scdaemon operation using KEYGRIP.
* agent/agent.h (struct card_key_info_s): New.
(divert_pksign, divert_pkdecrypt): New API.
* agent/call-scd.c (card_keyinfo_cb): New.
(agent_card_free_keyinfo, agent_card_keyinfo): New.
* agent/divert-scd.c (ask_for_card): Having GRIP argument,
ask scdaemon with agent_card_keyinfo.
(divert_pksign, divert_pkdecrypt): Ditto.
* agent/pkdecrypt.c (agent_pkdecrypt): Supply GRIP.
* agent/pksign.c (agent_pksign_do): Ditto.

--

We are going to relax the requirment for SERIALNO of card.  It's OK,
when a card doesn't have recorded SERIALNO.  If a card has a key
with GRIP, it can be used.

GnuPG-bug-id: 2291, 4301
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2019-05-15 17:13:32 +09:00
Werner Koch
54e96c6fd2
agent: Replace most assert by log_assert.
--
2019-05-14 10:31:46 +02:00
Werner Koch
b56dfdfc18
Use the gpgrt log functions if possible.
* common/logging.c: Do not build any code if we can use the gpgrt_log
functions.
(log_logv_with_prefix): Rename to log_logv_prefix and change order of
args so that this function matches its printf like counterpart
gpgrt_logv_prefix.  Change all callers.
(log_debug_with_string): Rename to log_debug_string. Change all
callers.
(log_printhex): Move first arg to end so that this function matches
its printf like counterpart gpgrt_log_printhex.  Change all callers.
* common/logging.h: Divert to gpgrt/libgpg-error if we can use the
gpgrt_log functions.
(bug_at): Add inline versions if we can use the gpgrt_log functions.
* configure.ac (GPGRT_ENABLE_LOG_MACROS): Add to AH_BOTTOM.
(mycflags): Add -Wno-format-zero-length.
--

This patch enables the use of the log function from libgpgrt (aka
libgpg-error).  Instead of checking a version number, we enable them
depending on macros set by recent gpg-error versions.  Eventually the
whole divert stuff can be removed.

The -Wno-format-zero-length is required because log_printhex can be
called with an empty format string.  Note that this is fully specified
standard C behaviour.

Signed-off-by: Werner Koch <wk@gnupg.org>
2017-11-27 15:00:25 +01:00
NIIBE Yutaka
5c8fe54809 Spelling fixes in docs and comments.
--

In addition, fix trailing spaces in tests/inittests.

GnuPG-bug-id: 3121
Reported-by: ka7 (klemens)
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2017-04-28 10:06:33 +09:00
Werner Koch
78d875a0f8
agent: Prepare to pass an additional parameter to the getpin callback.
* agent/call-scd.c (writekey_parm_s, inq_needpin_s): Merge into ...
(inq_needpin_parm_s): new struct.  Add new field 'getpin_cb_desc'.
Change users to set all fields.
(inq_needpin): Pass GETPIN_CB_DESC to the GETPIN_CB.
(agent_card_pksign): Add arg 'desc_text' and change arg 'getpin_cb' to
take an additional arg 'desc_text'.
(agent_card_pkdecrypt): Ditto.
(agent_card_writekey): Change arg 'getpin_cb' to take an additional
arg 'desc_text'.
(agent_card_scd): Ditto.
* agent/divert-scd.c (getpin_cb): Add new arg 'desc_text'.
(divert_pksign): Add new arg 'desc_text' and pass is to
agent_card_pksign.
(divert_pkdecrypt): Add new arg 'desc_text' and pass is to
agent_card_pkdecrypt.
* agent/pkdecrypt.c (agent_pkdecrypt): Pass DESC_TEXT to
divert_pkdecrypt.
* agent/pksign.c (agent_pksign_do):  Pass DESC_TEXT to
divert_pksign.
--

Signed-off-by: Werner Koch <wk@gnupg.org>
2017-02-22 09:40:50 +01:00
Werner Koch
4d7dc432b5
Change all http://www.gnu.org in license notices to https://
--
2016-11-05 12:02:19 +01:00
Werner Koch
fabcf1440a agent: Replace some sprintf.
* agent/call-scd.c (agent_card_pksign): Replace sprintf by bin2hex.
* agent/command-ssh.c (ssh_identity_register): Ditto.
* agent/pkdecrypt.c (agent_pkdecrypt): Replace sprintf by
put_membuf_printf.

Signed-off-by: Werner Koch <wk@gnupg.org>
2014-12-02 14:13:53 +01:00
Werner Koch
3981ff15f3 agent: Return NO_SECKEY instead of ENONET for PKSIGN and others.
* agent/pksign.c (agent_pksign_do): Replace ENONET by NO_SECKEY.
* agent/findkey.c (agent_key_from_file): No diagnostic for NO_SECKEY.
* agent/pkdecrypt.c (agent_pkdecrypt): Replace checking for ENOENT.
2014-08-18 15:42:54 +02:00
NIIBE Yutaka
ac5a1a3ccb agent: API change of agent_key_from_file.
* agent/findkey.c (agent_key_from_file): Always return S-expression.
* agent/command.c (cmd_passwd): Distinguish by SHADOW_INFO.
(cmd_export_key): Likewise.  Free SHADOW_INFO.
(cmd_keytocard): Likewise.  Release S_SKEY.
* agent/pkdecrypt.c (agent_pkdecrypt): Likewise.
* agent/pksign.c (agent_pksign_do): Likewise.  Use the S-expression to
know the key type.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
2014-03-11 16:03:01 +09:00
Werner Koch
780ba32336 gpg: Make decryption with the OpenPGP card work.
* scd/app-common.h (APP_DECIPHER_INFO_NOPAD): New.
* scd/app-openpgp.c (do_decipher): Add arg R_INFO.
* scd/app-nks.c (do_decipher): Add arg R_INFO as a dummy.
* scd/app.c (app_decipher): Add arg R_INFO.
* scd/command.c (cmd_pkdecrypt): Print status line "PADDING".
* agent/call-scd.c (padding_info_cb): New.
(agent_card_pkdecrypt): Add arg R_PADDING.
* agent/divert-scd.c (divert_pkdecrypt): Ditto.
* agent/pkdecrypt.c (agent_pkdecrypt): Ditto.
* agent/command.c (cmd_pkdecrypt):  Print status line "PADDING".
* g10/call-agent.c (padding_info_cb): New.
(agent_pkdecrypt): Add arg R_PADDING.
* g10/pubkey-enc.c (get_it): Use padding info.
--

Decryption using a card never worked in gpg 2.1 because the
information whether the pkcs#1 padding needs to be removed was not
available.  Gpg < 2.1 too this info from the secret sub key but that
has gone in 2.1.

Signed-off-by: Werner Koch <wk@gnupg.org>
2013-08-28 17:40:32 +02:00
Werner Koch
b008274afd Nuked almost all trailing white space.
We better do this once and for all instead of cluttering all future
commits with diffs of trailing white spaces.  In the majority of cases
blank or single lines are affected and thus this change won't disturb
a git blame too much.  For future commits the pre-commit scripts
checks that this won't happen again.
2011-02-04 12:57:53 +01:00
Werner Koch
54591341a4 More agent support for gpg. 2010-10-13 15:57:08 +00:00
Werner Koch
bfbd80feb9 Exporting secret keys via gpg-agent is now basically supported.
A couple of forward ported changes.
Doc updates.
2010-10-01 20:33:53 +00:00
Werner Koch
31bc3c8edd s/CACHE_MODE_IMPGEN/CACHE_MODE_NONCE/.
Prepare for more use cases of the cache nonce.
2010-09-01 11:07:16 +00:00
Werner Koch
002f51031a Fix bug #1053
Add option --qualitybar to command GET_PASSPHRASE.
2009-05-15 11:16:28 +00:00
Werner Koch
ceb42db4dd Print NO_SECKEY status line in gpgsm.
This fixes bug#1020.
2009-03-25 16:05:16 +00:00
Werner Koch
93d3811abc Changed to GPLv3.
Removed intl/.
2007-07-04 19:49:40 +00:00
Werner Koch
eef036df23 The big Assuan error code removal. 2006-09-06 16:35:52 +00:00
Werner Koch
d8602648b8 See ChangeLogs 2006-08-29 16:18:30 +00:00
Werner Koch
f98537733a Updated FSF's address. 2006-06-20 17:21:37 +00:00
Werner Koch
deeba405a9 gcc-4 defaults forced me to edit many many files to get rid of the
char * vs. unsigned char * warnings.  The GNU coding standards used to
say that these mismatches are okay and better than a bunch of casts.
Obviously this has changed now.
2005-06-16 08:12:03 +00:00
Werner Koch
3370164182 New debugging optionhs, updates to the manual. 2005-06-07 19:09:18 +00:00
Werner Koch
18fd4964f6 * call-scd.c (init_membuf, put_membuf, get_membuf): Removed. We
now use the identical implementation from ../common/membuf.c.

* pksign.c (agent_pksign): Changed arg OUTFP to OUTBUF and use
membuf functions to return the value.
* pkdecrypt.c (agent_pkdecrypt): Ditto.
* genkey.c (agent_genkey): Ditto.
* command.c (cmd_pksign, cmd_pkdecrypt, cmd_genkey): Replaced
assuan_get_data_fp() by a the membuf scheme.
(clear_outbuf, write_and_clear_outbuf): New.

* membuf.c (put_membuf): Wipe out buffer after a failed realloc.
2004-12-20 08:32:56 +00:00
Werner Koch
cbff0b05e5 * command.c (cmd_setkeydesc): New.
(register_commands): Add command SETKEYDESC.
(cmd_pksign, cmd_pkdecrypt): Use the key description.
(reset_notify): Reset the description.
* findkey.c (unprotect): Add arg DESC_TEXT.
(agent_key_from_file): Ditto.
* pksign.c (agent_pksign): Ditto.
* pkdecrypt.c (agent_pkdecrypt): Ditto. Made CIPHERTEXT an
unsigned char*.
2004-02-13 17:06:34 +00:00
Werner Koch
31de2267ec * findkey.c (agent_key_from_file): Extra paranoid wipe.
* protect.c (agent_unprotect): Ditto.
(merge_lists): Ditto. Add arg RESULTLEN.
* pkdecrypt.c (agent_pkdecrypt): Don't show the secret key even in
debug mode.

* protect.c: Add DSA and Elgamal description.
2004-02-03 16:24:37 +00:00
Werner Koch
671f696e55 * findkey.c (agent_key_from_file): Now return an error code so
that we have more detailed error messages in the upper layers.
This fixes the handling pinentry's cancel button.
* pksign.c (agent_pksign): Changed accordingly.
* pkdecrypt.c (agent_pkdecrypt): Ditto.
* command.c (cmd_passwd): Ditto.
2004-01-16 17:39:58 +00:00
Werner Koch
dba40e5e45 Mainly changes to adjust for the changed KSBA API. 2003-11-12 15:17:44 +00:00