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12 Commits

Author SHA1 Message Date
Werner Koch
16a6311ade gpg: Use only OpenPGP cipher algo ids.
* 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 <wk@gnupg.org>
2014-01-31 14:35:49 +01:00
Werner Koch
402aa0f948 gpg: Rework ECC support and add experimental support for Ed25519.
* 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 <wk@gnupg.org>
2013-11-15 09:01:11 +01:00
Werner Koch
25f292ed89 Removed memory leak in the ECDH code. 2011-04-28 10:51:14 +02:00
Werner Koch
4659c923a0 Sample ECC keys and message do now work.
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.
2011-02-02 15:48:54 +01:00
Werner Koch
328a642aa5 Fixed the ECC interface to Libgcrypt to be ABI compatible with the previous 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 .
2011-01-31 15:44:24 +01:00
Werner Koch
0fb0bb8d9a Reworked the ECC changes to better fit into the Libgcrypt API.
See ChangeLog for details.  Key generation, signing and verification works.
Encryption does not yet work.  Requires latest Libgcrypt changes.
2011-01-31 09:27:06 +01:00
Werner Koch
358afc0dc8 Function name cleanups
Also nuked some trailing spaces.
2011-01-26 17:17:43 +01:00
Werner Koch
d879c287ac Started with some code cleanups in ECDH.
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.
2011-01-25 20:28:25 +01:00
Werner Koch
302c5a826c More ECDH code cleanups 2011-01-25 17:48:51 +01:00
Werner Koch
90b0ff23b7 Editorial changes and allow building with old libgcrypts.
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  <wk@g10code.com>

	* configure.ac: Need Libgcrypt 1.4.6 due to AESWRAP.
	(HAVE_GCRY_PK_ECDH): Add new test.

[agent/]
2011-01-21  Werner Koch  <wk@g10code.com>

	* cvt-openpgp.c (GCRY_PK_ECDH) [!HAVE_GCRY_PK_ECDH]: New.

[include/]
2011-01-21  Werner Koch  <wk@g10code.com>

	* cipher.h (GCRY_PK_USAGE_CERT): Remove compatibility macros
	because we now require libgcrypt 1.4.6.
	(GCRY_PK_ECDH): Add replacement.
2011-01-21 12:00:57 +01:00
Andrey Jivsov
5761a9ba74 'g10/gpg2 --encrypt --debug 15 -r ecdsa -a -o _e.asc _' and 'g10/gpg2 --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
2011-01-10 20:24:14 -08:00
Andrey Jivsov
e0972d3d96 Integrating http://code.google.com/p/gnupg-ecc/source/detail?r=15 .
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.
2011-01-05 17:33:17 -08:00