* sm/misc.c (transform_sigval): Support EdDSA.
* sm/certreqgen.c (create_request): Support EdDSA cert creation.
* sm/certcheck.c (gpgsm_check_cert_sig): Map some ECC algo OIDs to
hash algos.
* sm/call-agent.c (struct sethash_inq_parm_s): New.
(sethash_inq_cb): New.
(gpgsm_agent_pksign): Add mode to pass plain data for EdDSA.
--
Tested using a parameter file
Key-Type: EdDSA
Key-Length: 1024
Key-Grip: 09D9AE3D494F7888C93BE5106AD8A734A87617F0
Key-Usage: sign
Serial: random
Name-DN: CN=dummy test ed25519
where the keygrip is from a gpg generated Ed25519 key. ECDSA was
tested using
Key-Type: ECDSA
Key-Length: 1024
Key-Grip: 8E06A180EFFE4C65B812150CAF19BF30C0689A4C
Key-Usage: sign
Serial: random
Name-DN: CN=dummy test nistp256
and RSA using
Key-Type: RSA
Key-Length: 2048
Key-Grip: C6A6390E9388CDBAD71EAEA698233FE5E04F001E
Key-Usage: sign
Serial: random
Name-DN: CN=dummy test rsa
The command used in all cases is
gpgsm -v --gen-key --batch a.parm >a.crt
gpgsm -v --import <a.crt
More support, in particular in the user interface, is required and
will follow soon.
GnuPG-bug-id: 4888
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/agent.h (struct server_control_s): Add field digest.data.
* agent/gpg-agent.c (agent_deinit_default_ctrl): Free that field.
* agent/command.c (reset_notify): Ditto.
(start_command_handler): ditto.
(cmd_sethash): Add new option --inquire.
* agent/call-scd.c (agent_card_pksign): For now return an error if
inquire mode was used.
* agent/command-ssh.c (ssh_handler_sign_request): Make sure
digest.data is cleared.
* agent/divert-scd.c (divert_pksign): Implement inquire mode.
* agent/pksign.c (agent_pksign_do): Ditto.
--
This is required to support EdDSA according to RFC8410.
GnuPG-bug-id: 4888
* sm/certdump.c (gpgsm_get_serial): New.
* sm/certcheck.c (gpgsm_check_cert_sig): Support EdDSA signatures.
--
Note that this does not work with the self-signed RFC-8410 sample
certificate; see the code for comments.
The Ed488 case has not been tested due to a lack of support in
Libgcrypt.
Signed-off-by: Werner Koch <wk@gnupg.org>
* sm/gpgsm.h (struct certlist_s): Add helper field pk_algo.
* sm/sign.c (gpgsm_sign): Store the public key algo. Take the hash
algo from the curve. Improve diagnostic output in verbose mode.
--
GnuPG-bug-id: 4098
Signed-off-by: Werner Koch <wk@gnupg.org>
* sm/decrypt.c (ecdh_decrypt): Support
dhSinglePass-stdDH-sha1kdf-scheme. Factor key derive code out to ...
(ecdh_derive_kek): new global function. Allow for hashs shorter than
the key.
(hash_ecc_cms_shared_info): Make file-only.
* sm/encrypt.c (ecdh_encrypt): Replace derive code by a call to the
new ecdh_derive_kek. Add test code to create data using
dhSinglePass-stdDH-sha1kdf-scheme.
* sm/gpgsm.h (opt): Add member force_ecdh_sha1kdf.
* sm/gpgsm.c: Add option --debug-force-ecdh-sha1kdf.
--
I did some test against
Governikus_Signer: 2.9.2.0
MCard security Provider: 2.4.0
Algorithm catalog from: 05.12.2019
using a Signature Card v2.0 and a nistp256 certificate. Encrypting
with Governikus used the stdDH-sha1kdf scheme which we can now
decrypt. Encrypting with GPGSM uses for that curve the recommended
scheme sha256kdf but Governikus was not able to decrypt this (no
usable error message). Encrypting using stdDH-sha1kdf with GPGSM by
using the new --debug-force-ecdh-sha1kdf option showed that
Governikus was able to decrypt this.
FWIW: RFC5753 (Use of Elliptic Curve Cryptography (ECC) Algorithms)
has this requirement:
Implementations that support EnvelopedData with the
ephemeral-static ECDH standard primitive:
- MUST support the dhSinglePass-stdDH-sha256kdf-scheme key
agreement algorithm, the id-aes128-wrap key wrap algorithm, and
the id-aes128-cbc content encryption algorithm; and
which Governikus seems not to fulfill.
GnuPG-bug-id: 4098
Signed-off-by: Werner Koch <wk@gnupg.org>
* common/sexputil.c (cipher_mode_to_string): New.
* sm/decrypt.c (prepare_decryption): Show cipher algo and mode.
(gpgsm_decrypt): Show key algo and fingerprint
Signed-off-by: Werner Koch <wk@gnupg.org>
* common/sexputil.c (pubkey_algo_to_string): New.
* sm/certcheck.c (do_encode_md): Replace GCRY_PK_ECDSA by GCRY_PK_ECC.
* sm/certreqgen-ui.c (check_keygrip): Add all ECC algorithms.
* sm/gpgsm.c (our_pk_test_algo): Also allow EdDSA.
* sm/verify.c (gpgsm_verify): Map ECC algo to ECDSA. Use new pubkey
algo name function
Signed-off-by: Werner Koch <wk@gnupg.org>
* sm/verify.c (gpgsm_verify): Print the used algorithms.
--
Note that we now use the full fingerprint instead of the certificate
id. This better aligns with what we do in gpg.
Signed-off-by: Werner Koch <wk@gnupg.org>
* tools/card-call-scd.c (learn_status_cb): Always fill chvinfo.
* tools/gpg-card.h (struct card_info_s): Increase size of chvinfo and
chvmaxlen.
* tools/gpg-card.c (list_nks): New.
(print_a_version): Support single part version numbers.
(list_card): Call list_nks.
--
Note that chvmaxlen is not yet used with NKS.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-nks.c (get_dispserialno): Move more to the top.
(do_getattr): Add $DISPSERIALNO and SERIALNO. Make CHV-STATUS work
with NKS15.
(verify_pin): Use dedicated min. PIN lengths.
(parse_pwidstr): Support NKS15
--
GnuPG-bug-id: 4938
Signed-off-by: Werner Koch <wk@gnupg.org>
* sm/fingerprint.c (gpgsm_get_key_algo_info): Factor code out to ...
(gpgsm_get_key_algo_info2): new.
(gpgsm_pubkey_algo_string): New.
* sm/keylist.c (list_cert_colon): Put curve into field 17
(list_cert_raw): Print the unified key algotithm string instead of the
algo and size.
(list_cert_std): Ditto.
--
It is important to known whether a 256 bit ECC uses a NIST or a
Brainpool curve.
Signed-off-by: Werner Koch <wk@gnupg.org>
* sm/decrypt.c (ecdh_decrypt): Add arg nbits and detect bare secret.
(prepare_decryption): Add arg nbits and pass on.
(gpgsm_decrypt): Pass size of curve to prepare_decryption.
--
GnuPG-bug-id: 4098
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-nks.c (struct fid_cache_s): New.
(struct app_local_s): Add field 'fid_cache'.
(do_deinit): Release the cache.
(keygripstr_from_pk_file): Implement the cache.
(find_fid_by_keyref): New
(do_sign, do_decipher): Use new function.
(do_with_keygrip): New.
Signed-off-by: Werner Koch <wk@gnupg.org>
* sm/decrypt.c (hash_ecc_cms_shared_info): Make global.
* sm/encrypt.c (ecdh_encrypt): New.
(encrypt_dek): Add arg PK_ALGO and support ECDH.
(gpgsm_encrypt): Pass PK_ALGO.
--
Note: This has only been tested with a messages created and decrypted
by GnuPG.
GnuPG-bug-id: 4098
Signed-off-by: Werner Koch <wk@gnupg.org>
* sm/minip12.c [TEST]: Remove test code. Include util.h, tlv.h. and
openpgpdefs.h. Remove the class and tag constants and replace them by
those from tlv.h.
(builder_add_oid, builder_add_mpi): New.
(build_key_sequence): Rename to ...
(build_rsa_key_sequence): this.
(build_ecc_key_sequence): New.
(p12_build): Call RSA or ECC builder.
(p12_raw_build): Ditto.
* sm/export.c (gpgsm_p12_export): Use correct armor header for ECC.
(sexp_to_kparms): Support ECC.
* sm/t-minip12.c: New to replace the former TEST code in minip12.h.
--
GnuPG-bug-id: 4921
* common/tlv-builder.c: New.
* common/tlv.c: Remove stuff only used by GnuPG 1.
(put_tlv_to_membuf, get_tlv_length): Move to ...
* common/tlv-builder.c: here.
* common/tlv.h (tlv_builder_t): New.
--
Such code should actually go into libksba and we will eventually do
that. However, for now it is easier to keep it here.
Signed-off-by: Werner Koch <wk@gnupg.org>
* sm/decrypt.c: Include tlv.h.
(string_from_gcry_buffer): New.
(hash_ecc_cms_shared_info): New.
(ecdh_decrypt): New.
(prepare_decryption): Support ECDH. Add arg pk_algo.
(gpgsm_decrypt): Lift some variables from an inner code block.
--
Note: This has only been tested with a single messages created by
OpenSSL and taken from the Mozilla bug tracker. In particular the
code to included UserKeyingMaterial (ukm) has not been tested.
GnuPG-bug-id: 4098
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app-nks.c: Major rework to support non-RSA cards.
--
This is a fist step so support this ECC card. The code has been
reworked while taking care that old cards should keep on working.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/app.c (send_card_and_app_list): Detect no app case.
--
This is a minor nug fix to return a better error message.
Signed-off-by: Werner Koch <wk@gnupg.org>
* sm/certchain.c (find_up): Disable external lookups in offline mode.
Always allow AKI lookup if CRLs are also enabled.
--
GnuPG-bug-id: 4898
Signed-off-by: Werner Koch <wk@gnupg.org>
* sm/call-dirmngr.c (gpgsm_dirmngr_lookup): Add optional arg URL and
adjust all callers.
* sm/certchain.c (oidstr_caIssuers): New.
(struct find_up_store_certs_s): Add additional fields.
(find_up_store_certs_cb): Store the fingerprint.
(find_up_via_auth_info_access): New.
(find_up): Try the AIA URI first.
--
Note that --auto-issuer-key-retrieve is required to use that.
GnuPG-bug-id: 4898
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/decrypt-data.c (decrypt_data): Move aead algo detection up.
--
Note that the AEAD modes are not yet approved for --compliance=de-vs
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/main.h (DEFAULT_AEAD_ALGO): Set to OCB.
--
With the old code and using libgcrypt 1.9 would have switched from the
high performance OCB to the ugly EAX mode. We are free software, we
are OCB.
* dirmngr/validate.c (hash_algo_from_buffer): New.
(uint_from_buffer): New.
(check_cert_sig): Support rsaPSS.
* sm/certcheck.c (gpgsm_check_cert_sig): Fix small memory leak on
error.
--
Yes, I know that there is a lot of code duplication. In fact some of
the code is ugly and it would be better if we enhance Libgcrypt to
guarantee that returned memory buffers via gcry_sexp_extract_param are
allways Nul terminated and we should also enhance that function to
directly extract into an unsigned int or char *.
GnuPG-bug-id: 4538
Signed-off-by: Werner Koch <wk@gnupg.org>
* common/sexputil.c (hash_algo_to_string): New.
--
Libgcrypt expects lowercase names and it is cumbersome to downcase
those retrieved via gcry_md_algo_name. It is easier and also faster
to use a dedicated map function.
* scd/app-p15.c (make_pin_prompt): Factor some code out to ...
(get_dispserialno): this.
(do_getattr): Use new fucntion for a $DISPSERIALNO.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/pubkey-enc.c (get_it): Remove check which mandates shorter
padding.
--
According to the section 8 of RFC 6637, the sender MAY use 21 bytes of
padding for AES-128 to provide 40-byte "m".
Reported-by: Metin Savignano
GnuPG-bug-id: 4908
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-p15.c (struct prkdf_object_s): New fields common_name and
serial_number.
(release_prkdflist): Free them.
(keygrip_from_prkdf): Parse cert and set them.
(any_control_or_space): New.
(make_pin_prompt): New.
(verify_pin): Construct a pretty PIN prompt.
(do_sign): Remove debug output.
--
The D-Trust card has the SerialNumber part of the Subject printed on
the front matter, we assume this is also possible with other cards and
thus we show this as serial number.
The holder of the card is also extracted from the card's subject.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/iso7816.c (map_sw): Detect 0x63Cn status code.
--
I really wonder when that got lost and we ended up with a simple card
error.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/iso7816.c (iso7816_select_mf): New.
* scd/app-p15.c (card_product_t): New.
(struct app_local_s): Add field 'card_product'.
(read_ef_tokeninfo): Detect D-Trust card.
(prepare_verify_pin): Switch to D-Trust AID.
(do_decipher): Restore a SE for D-TRust cards. Chnage the passing
indicator to 0x81.
--
Using what I learned from a USB trace running the Governikus Signer
Software on Windows this fixes the left over problem with the new
D-Trust card support.
Signed-off-by: Werner Koch <wk@gnupg.org>
