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b203325ce1
* g10/ecdh.c (pk_ecdh_encrypt_with_shared_point): Factor extraction
part out to ...
(extract_secret_x): new. Allow for x-only coordinate.
(pk_ecdh_encrypt_with_shared_point): Change arg shared_mpi
to (shared,nshared). Move param check to the top. Add extra safety
check.
(pk_ecdh_decrypt): Adjust for change.
* g10/pkglue.c (get_data_from_sexp): New.
(pk_encrypt): Use it for "s" and adjusted for changed
pk_ecdh_encrypt_with_shared_point.
* g10/pubkey-enc.c (get_it): Remove conversion to an MPI and call
pk_ecdh_decrypt with the frame buffer.
--
Backported-from-master: f129b0e977)
Signed-off-by: Werner Koch <wk@gnupg.org>
52 lines
2.0 KiB
C
52 lines
2.0 KiB
C
/* pkglue.h - public key operations definitions
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* Copyright (C) 2003, 2010 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef GNUPG_G10_PKGLUE_H
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#define GNUPG_G10_PKGLUE_H
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#include "packet.h" /* For PKT_public_key. */
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/*-- pkglue.c --*/
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gcry_mpi_t get_mpi_from_sexp (gcry_sexp_t sexp, const char *item, int mpifmt);
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int pk_verify (pubkey_algo_t algo, gcry_mpi_t hash, gcry_mpi_t *data,
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gcry_mpi_t *pkey);
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int pk_encrypt (pubkey_algo_t algo, gcry_mpi_t *resarr, gcry_mpi_t data,
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PKT_public_key *pk, gcry_mpi_t *pkey);
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int pk_check_secret_key (pubkey_algo_t algo, gcry_mpi_t *skey);
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/*-- ecdh.c --*/
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gcry_mpi_t pk_ecdh_default_params (unsigned int qbits);
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gpg_error_t pk_ecdh_generate_ephemeral_key (gcry_mpi_t *pkey, gcry_mpi_t *r_k);
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gpg_error_t pk_ecdh_encrypt_with_shared_point
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/* */ (int is_encrypt, const char *shared, size_t nshared,
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const byte pk_fp[MAX_FINGERPRINT_LEN],
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gcry_mpi_t data, gcry_mpi_t *pkey,
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gcry_mpi_t *out);
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int pk_ecdh_encrypt (gcry_mpi_t *resarr, const byte pk_fp[MAX_FINGERPRINT_LEN],
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gcry_mpi_t data, gcry_mpi_t * pkey);
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int pk_ecdh_decrypt (gcry_mpi_t *result, const byte sk_fp[MAX_FINGERPRINT_LEN],
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gcry_mpi_t data, const char *shared, size_t nshared,
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gcry_mpi_t *skey);
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#endif /*GNUPG_G10_PKGLUE_H*/
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