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* gpg: Some support to allow Kyber decryption.Werner Koch2024-04-091-1/+1
| | | | | | | | | | | | | | | | | | * g10/call-agent.c (agent_pkdecrypt): Support dual keygrips and switch to KEM mode. * g10/ecdh.c (pk_ecdh_decrypt): Add an extra length check. * g10/keyid.c (do_hash_public_key): Fix Kyber fingerprint computation. * g10/mainproc.c (release_list): Free all 4 data elements. (proc_pubkey_enc): Copy all 4 data elements. * g10/misc.c (openpgp_pk_test_algo2): Map Kyber to KEM. * g10/parse-packet.c (parse_pubkeyenc): Fix Kyber parser. * g10/pubkey-enc.c (get_session_key): Allow Kyber. (get_it): Support Kyber. -- GnuPG-bug-id: 6815
* gpg: Initial support for generating Kyber subkeys.Werner Koch2024-04-031-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * common/openpgpdefs.h (PUBKEY_ALGO_KY768_25519): Remove. (PUBKEY_ALGO_KY1024_448): Remove. (PUBKEY_ALGO_KYBER): New. Use them everywhere instead of the removed. * g10/build-packet.c (gpg_mpi_write_nohdr): Rename to (gpg_mpi_write_opaque_nohdr): this. Change callers. (gpg_mpi_write_opaque_32): New. (do_key): Support Kyber keys using the revised format. * g10/gpg.h (MAX_EXTERN_KEYPARM_BITS): New. * g10/parse-packet.c (read_octet_string): Add arg nbytes so support reading with a length prefix. Adjust callers. (parse_key): Parse Kyber public keys. * g10/misc.c (pubkey_get_npkey): Support Kyber. (pubkey_get_nskey): Ditto. * g10/keyid.c (pubkey_string): Support dual algorithms. (do_hash_public_key): Support Kyber. (nbits_from_pk): Ditto. (keygrip_from_pk): Return the Kyber part for the ECC+Kyber dual algo. * g10/keygen.c (struct common_gen_cb_parm_s): Add genkey_result2. Note that this callback is not yet used. (ecckey_from_sexp): Add optional arg sexp2 and use it for Kyber. Change callers. (ecckey_from_sexp): Do not leak LIST in case of an error. (common_gen): Add arg keyparms2, change callers, and support Kyber. (gen_kyber): New. (get_keysize_range): Support Kyber. (fixup_keysize): Simplify and support Kyber. (do_create): Handle Kyber. (parse_key_parameter_part): Remove algo strings "ky768" and "ky1024" and add a generic "kyber" with default parameters. -- This uses a revised format which is more aligned with the usual OpenPGP structure. A lot of things are still missing. For example support for handling two keygrips and checking both of them in a -K listing. There is also only ky768_bp384 as fixed algorithm for now. No passphrase for the Kyber part of the dual algorithm is on purpose. A test was done using gpg --quick-gen-key pqc1 nistp256 and then running gpg -v --quick-add-key <fingerprint> kyber which creates a v5 subkey on a v4 primary key. A second test using gpg --quick-gen-key pqc2 Ed448 followed by a --quick-add-key created a v5 key with a v5 subkey. GnuPG-bug-id: 6815
* gpg: Clean up pk_ecdh_decrypt function.NIIBE Yutaka2024-01-261-14/+11
| | | | | | | | | * g10/ecdh.c (pk_ecdh_decrypt): Allocate just the right size of memory for the session key, simplifying the decrypt process. -- Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Use GCRY_KDF_ONESTEP_KDF with newer libgcrypt in future.NIIBE Yutaka2022-10-141-0/+23
| | | | | | | | | | | | | | * g10/ecdh.c (derive_kek): Use GCRY_KDF_ONESTEP_KDF. -- This change is not yet enabled. We will be able to use the code when we update NEED_LIBGCRYPT_VERSION to 1.11.0. Before the update, gpg compiled with libgcrypt 1.11.0 can't work with older libgcrypt runtime. GnuPG-bug-id: 5964 Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Don't use malloc for kek_params.NIIBE Yutaka2021-11-121-8/+5
| | | | | | | | | * g10/ecdh.c (pk_ecdh_default_params): Use stack for kek_params. -- GnuPG-bug-id: 5393 Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Allow ECDH with a smartcard returning just the x-ccordinate.Werner Koch2021-03-291-7/+16
| | | | | * g10/ecdh.c (extract_secret_x): Add extra safety check. Allow for x-only coordinate.
* gpg: Support ECDH with v5 key.NIIBE Yutaka2021-03-241-1/+8
| | | | | | | | * g10/ecdh.c (build_kdf_params): Use the first 20 octets. * g10/pkglue.c (pk_encrypt): Remove length check to 20. * g10/pubkey-enc.c (get_it): Likewise. Signed-off-by: NIIBE Yutaka <[email protected]>
* ecc: Use "cv448" to specify key using X448.NIIBE Yutaka2020-06-231-1/+1
| | | | | | | | | | | | | * common/openpgp-oid.c (oidtable): Use "cv448". (oid_cv448): Rename from oid_x448. (openpgp_oidbuf_is_cv448, openpgp_oid_is_cv448): Likewise. * common/util.h (openpgp_oid_is_cv448): Follow the change. * g10/ecdh.c (pk_ecdh_generate_ephemeral_key): Likewise. * g10/keygen.c (gen_ecc, ask_algo): Use "cv448". (parse_key_parameter_part): Likewise. * g10/pkglue.c (get_data_from_sexp): Fix for debug output. Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Use bytes for ECDH.NIIBE Yutaka2020-06-091-42/+24
| | | | | | | | | | | | | | | * g10/ecdh.c (extract_secret_x): Use byte * instead of MPI. (prepare_ecdh_with_shared_point): Use char * instead of MPI. (pk_ecdh_encrypt_with_shared_point): Likewise. (pk_ecdh_decrypt): Likewise. * g10/pkglue.h (pk_ecdh_encrypt_with_shared_point, pk_ecdh_decrypt): Change declaration. * g10/pkglue.c (get_data_from_sexp): New. (pk_encrypt): Use get_data_from_sexp instead of get_mpi_from_sexp. Follow the change of pk_ecdh_encrypt_with_shared_point. * g10/pubkey-enc.c (get_it): Follow the change of pk_ecdh_decrypt. Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Add X448 support.NIIBE Yutaka2020-06-091-2/+27
| | | | | | | | | | | | | * common/openpgp-oid.c (oidtable): Add X448. (oid_x448,openpgp_oidbuf_is_x448,openpgp_oid_is_x448): New. * common/util.h (openpgp_oid_is_x448): New. * g10/ecdh.c (gen_k): Add handling of opaque MPI and support endianness. (pk_ecdh_generate_ephemeral_key): X448 requires opaque MPI. * g10/keygen.c (gen_ecc): Add support for X448. (ask_algo, parse_key_parameter_part): Likewise. Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Clean up ECDH code path (5).NIIBE Yutaka2020-05-221-115/+134
| | | | | | | | | | | * g10/ecdh.c (pk_ecdh_encrypt_with_shared_point): Now, it's only for encrytion. (pk_ecdh_decrypt): Use prepare_ecdh_with_shared_point and move decrypt code path in original pk_ecdh_encrypt_with_shared_point here. * g10/pkglue.h (pk_ecdh_encrypt_with_shared_point): Change API. * g10/pkglue.c (pk_encrypt): Follow the change. Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Clean up ECDH code path (4).NIIBE Yutaka2020-05-221-167/+186
| | | | | | | | * g10/ecdh.c (prepare_ecdh_with_shared_point): New. (pk_ecdh_encrypt_with_shared_point): Fixing error paths for closing the cipher handle, use prepare_ecdh_with_shared_point. Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Clean up ECDH code path (3).NIIBE Yutaka2020-05-221-36/+52
| | | | | | | * g10/ecdh.c (derive_kek): New. (pk_ecdh_encrypt_with_shared_point): Use derive_kek. Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Clean up ECDH code path (2).NIIBE Yutaka2020-05-221-65/+72
| | | | | | | | * g10/ecdh.c (build_kdf_params): New. (pk_ecdh_encrypt_with_shared_point): Use build_kdf_params, and check things before extract_secret_x. Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Clean up ECDH code path (1).NIIBE Yutaka2020-05-221-49/+61
| | | | | | | * g10/ecdh.c (extract_secret_x): New. (pk_ecdh_encrypt_with_shared_point): Use extract_secret_x. Signed-off-by: NIIBE Yutaka <[email protected]>
* Fix the previous commit.NIIBE Yutaka2019-03-131-1/+1
| | | | | | | | | | | | * g10/ecdh.c (kek_params_table): Revert the change. * scd/app-openpgp.c (ecdh_params): Use CIPHER_ALGO_AES256 for 384-bit key. -- Avoiding CIPHER_ALGO_AES192 is intentional here. Signed-off-by: NIIBE Yutaka <[email protected]>
* g10: Fix symmetric cipher algo constant for ECDH.NIIBE Yutaka2019-03-131-1/+1
| | | | | | | | | | * g10/ecdh.c (kek_params_table): Use CIPHER_ALGO_AES192 for ECC strength 384, according to RFC-6637. -- Reported-by: Trevor Bentley Signed-off-by: NIIBE Yutaka <[email protected]>
* Use the gpgrt log functions if possible.Werner Koch2017-11-271-9/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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 <[email protected]>
* Remove -I option to common.NIIBE Yutaka2017-03-071-1/+1
| | | | | | | | | | | | | * dirmngr/Makefile.am (AM_CPPFLAGS): Remove -I$(top_srcdir)/common. * g10/Makefile.am (AM_CPPFLAGS): Ditto. * g13/Makefile.am (AM_CPPFLAGS): Ditto. * kbx/Makefile.am (AM_CPPFLAGS): Ditto. * scd/Makefile.am (AM_CPPFLAGS): Ditto. * sm/Makefile.am (AM_CPPFLAGS): Ditto. * tools/Makefile.am (AM_CPPFLAGS): Ditto. * Throughout: Follow the change. Signed-off-by: NIIBE Yutaka <[email protected]>
* Change all http://www.gnu.org in license notices to https://Werner Koch2016-11-051-1/+1
| | | | --
* g10: Fix ECDH, clarifying the format.NIIBE Yutaka2016-10-271-18/+20
| | | | | | | | | | | * g10/ecdh.c (pk_ecdh_encrypt_with_shared_point): Returns error when it's short. Clarify the format. Handle other prefixes correctly. -- With the scdaemon's change, there is no case NBYTES < SECRET_X_SIZE. This fixes the break of ECDH with X25519. Signed-off-by: NIIBE Yutaka <[email protected]>
* g10: ECDH shared point format.Arnaud Fontaine2016-10-271-8/+24
| | | | | | | | | | * g10/ecdh.c (pk_ecdh_encrypt_with_shared_point): Improve handling of ECDH shared point format. -- This handles the case where the result comes from scdaemon. Signed-off-by: Arnaud Fontaine <arnaud.fontaine at ssi.gouv.fr>
* gpg: Remove all assert.h and s/assert/log_assert/.Werner Koch2016-04-291-6/+5
| | | | Signed-off-by: Werner Koch <[email protected]>
* Curve25519 support.NIIBE Yutaka2015-08-061-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | * agent/cvt-openpgp.c (get_keygrip): Handle Curve25519. (convert_secret_key, convert_transfer_key): Ditto. * common/openpgp-oid.c (oidtable): Add Curve25519. (oid_crv25519, openpgp_oid_is_crv25519): New. * common/util.h (openpgp_oid_is_crv25519): New. * g10/ecdh.c (pk_ecdh_encrypt_with_shared_point): Handle the case with Montgomery curve which uses x-only coordinate. * g10/keygen.c (gen_ecc): Handle Curve25519. (ask_curve): Change the API and second arg is to return subkey algo. (generate_keypair, generate_subkeypair): Follow chage of ask_curve. * g10/keyid.c (keygrip_from_pk): Handle Curve25519. * g10/pkglue.c (pk_encrypt): Handle Curve25519. * g10/pubkey-enc.c (get_it): Handle the case with Montgomery curve. * scd/app-openpgp.c (ECC_FLAG_DJB_TWEAK): New. (send_key_attr): Work with general ECC, Ed25519, and Curve25519. (get_public_key): Likewise. (ecc_writekey): Handle flag_djb_tweak. -- When libgcrypt has Curve25519, GnuPG now supports Curve25519.
* gpg: Rename a debug macro.Werner Koch2015-04-061-12/+12
| | | | | * g10/options.h (DBG_CIPHER_VALUE): Rename to DBG_CRYPTO_VALUE. (DBG_CIPHER): Rename to DBG_CRYPTO.
* gpg: Clear a possible rest of the KDF secret buffer.Werner Koch2015-01-051-1/+1
| | | | | | | | | | * g10/ecdh.c (pk_ecdh_encrypt_with_shared_point): Fix order of args. -- That bug has been here since the beginning. The entire function needs a review or be be moved to Libgcrypt. Signed-off-by: Werner Koch <[email protected]>
* gpg: Use only OpenPGP cipher algo ids.Werner Koch2014-01-311-3/+3
| | | | | | | | | | | | | | | | | | * g10/misc.c (map_cipher_openpgp_to_gcry): Use explicit mapping and use enums for the arg and return value. (map_cipher_gcry_to_openpgp): Ditto. (openpgp_cipher_blocklen): Use constant macros. (openpgp_cipher_test_algo): Use mapping function and prepare to disable algorithms. (openpgp_cipher_algo_name): Do not use Libgcrypt. * g10/ecdh.c (pk_ecdh_encrypt_with_shared_point): Replace CGRY_CIPHER_* by CIPHER_ALGO_*. * common/openpgpdefs.h (cipher_algo_t): Remove unused CIPHER_ALGO_DUMMY. Signed-off-by: Werner Koch <[email protected]>
* gpg: Rework ECC support and add experimental support for Ed25519.Werner Koch2013-11-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * agent/findkey.c (key_parms_from_sexp): Add algo name "ecc". (agent_is_dsa_key): Ditto. (agent_is_eddsa_key): New. Not finished, though. * agent/pksign.c (do_encode_eddsa): New. (agent_pksign_do): Use gcry_log_debug functions. * agent/protect.c (agent_protect): Parse a flags parameter. * g10/keygen.c (gpg_curve_to_oid): Move to ... * common/openpgp-oid.c (openpgp_curve_to_oid): here and rename. (oid_ed25519): New. (openpgp_oid_is_ed25519): New. (openpgp_oid_to_curve): New. * common/t-openpgp-oid.c (test_openpgp_oid_is_ed25519): New. * g10/build-packet.c (gpg_mpi_write): Write the length header also for opaque MPIs. (gpg_mpi_write_nohdr): New. (do_key): Use gpg_mpi_write_nohdr depending on algorithm. (do_pubkey_enc): Ditto. * g10/ecdh.c (pk_ecdh_encrypt_with_shared_point): Use gpg_mpi_write_nohdr. * g10/export.c (transfer_format_to_openpgp): * g10/keygen.c (ecckey_from_sexp): Return the error. (gen_ecc): Repalce arg NBITS by CURVE. (read_parameter_file): Add keywords "Key-Curve" and "Subkey-Curve". (ask_curve): New. (generate_keypair, generate_subkeypair): Use ask_curve. (do_generate_keypair): Also pass curve name. * g10/keylist.c (list_keyblock_print, list_keyblock_colon): Print curve name. * g10/parse-packet.c (mpi_read): Remove workaround for Libcgrypt < 1.5. (parse_key): Fix ECC case. Print the curve name. * g10/pkglue.c (mpi_from_sexp): Rename to get_mpi_from_sexp. (pk_verify, pk_check_secret_key): Add special case for Ed25519. * g10/seskey.c (encode_md_value): Ditto. * g10/sign.c (do_sign, hash_for, sign_file): Ditto. -- Be warned that this code is subject to further changes and that the format will very likely change before a release. There are also known bugs and missing code. Signed-off-by: Werner Koch <[email protected]>
* Removed memory leak in the ECDH code.Werner Koch2011-04-281-32/+53
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* Sample ECC keys and message do now work.Werner Koch2011-02-021-42/+39
| | | | | | | | Import and export of secret keys does now work. Encryption has been fixed to be compatible with the sample messages. This version tests for new Libgcrypt function and thus needs to be build with a new Libgcrypt installed.
* Fixed the ECC interface to Libgcrypt to be ABI compatible with the previous ↵Werner Koch2011-01-311-94/+97
| | | | | | | | | | | | | | | | version. Quite some changes were needed but in the end we have less code than before. Instead of trying to do everything with MPIs and pass them back and forth between Libgcrypt and GnuPG, we know use the S-expression based interface and make heavy use of our opaque MPI feature. Encryption, decryption, signing and verification work with self-generared keys. Import and export does not yet work; thus it was not possible to check the test keys at https://sites.google.com/site/brainhub/pgpecckeys .
* Reworked the ECC changes to better fit into the Libgcrypt API.Werner Koch2011-01-311-15/+11
| | | | | See ChangeLog for details. Key generation, signing and verification works. Encryption does not yet work. Requires latest Libgcrypt changes.
* Function name cleanupsWerner Koch2011-01-261-3/+3
| | | | Also nuked some trailing spaces.
* Started with some code cleanups in ECDH.Werner Koch2011-01-251-122/+90
| | | | | | The goal is to have the ECDH code more uniform with the other algorithms. Also make error messages and variable names more similar to other places.
* More ECDH code cleanupsWerner Koch2011-01-251-74/+30
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* Editorial changes and allow building with old libgcrypts.Werner Koch2011-01-211-190/+261
| | | | | | | | | | | | | | | | | | | | | | | | | | | Changed order of some conditional to make to put the special case into the true branch. Indentation changes. Minor other changes to make the ECC code more similar to the rest of our code. It builds but many sefltests still fail. Need to fix that before using it with an ECDH enabled libgcrypt. [/] 2011-01-21 Werner Koch <[email protected]> * configure.ac: Need Libgcrypt 1.4.6 due to AESWRAP. (HAVE_GCRY_PK_ECDH): Add new test. [agent/] 2011-01-21 Werner Koch <[email protected]> * cvt-openpgp.c (GCRY_PK_ECDH) [!HAVE_GCRY_PK_ECDH]: New. [include/] 2011-01-21 Werner Koch <[email protected]> * cipher.h (GCRY_PK_USAGE_CERT): Remove compatibility macros because we now require libgcrypt 1.4.6. (GCRY_PK_ECDH): Add replacement.
* 'g10/gpg2 --encrypt --debug 15 -r ecdsa -a -o _e.asc _' and 'g10/gpg2 ↵Andrey Jivsov2011-01-111-48/+34
| | | | | | | | --debug 15 _e.asc', as well as decoding of an old message posted on https://sites.google.com/site/brainhub/pgpecckeys work. This is the milestone 2 that brings in ECDH support from http://code.google.com/p/gnupg-ecc/source/detail?r=15 . This corresponds to the commit 899386826c85f1e757e75bcc5d5b2159d05676a0 in libgcrypt
* Integrating http://code.google.com/p/gnupg-ecc/source/detail?r=15 .Andrey Jivsov2011-01-061-0/+477
The following works: gpg2 --gen-key (ECC) gpg2 --list-keys gpg2 --list-packets ~/.gnupg/pubring.gpg gpg2 --list-packets <private key from http://sites.google.com/site/brainhub/pgpecckeys> ECDH doesn't work yet as the code must be re-written to adjust for gpg-agent refactoring.
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