/* t-encrypt-mixed.c - Regression test. * Copyright (C) 2016 by Bundesamt für Sicherheit in der Informationstechnik * Software engineering by Intevation GmbH * * This file is part of GPGME. * * GPGME is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * GPGME is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see <https://gnu.org/licenses/>. * SPDX-License-Identifier: LGPL-2.1-or-later */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <stdlib.h> #include <stdio.h> #include <string.h> #include <gpgme.h> #include "t-support.h" /* Tests mixed symmetric and asymmetric decryption. Verifies that an encrypted message can be decrypted without the secret key but that the recipient is also set correctly. */ int main (void) { gpgme_ctx_t ctx; gpgme_error_t err; gpgme_data_t in, out; gpgme_key_t key[2] = { NULL, NULL }; gpgme_encrypt_result_t result; gpgme_decrypt_result_t dec_result; gpgme_recipient_t recipient; const char *text = "Hallo Leute\n"; char *text2; size_t len; init_gpgme (GPGME_PROTOCOL_OpenPGP); err = gpgme_new (&ctx); fail_if_err (err); gpgme_set_armor (ctx, 1); err = gpgme_data_new_from_mem (&in, text, strlen (text), 0); fail_if_err (err); err = gpgme_data_new (&out); fail_if_err (err); gpgme_set_passphrase_cb (ctx, passphrase_cb, NULL); /* A recipient for which we don't have a secret key */ err = gpgme_get_key (ctx, "D695676BDCEDCC2CDD6152BCFE180B1DA9E3B0B2", &key[0], 0); fail_if_err (err); err = gpgme_op_encrypt (ctx, key, GPGME_ENCRYPT_ALWAYS_TRUST | GPGME_ENCRYPT_SYMMETRIC, in, out); fail_if_err (err); result = gpgme_op_encrypt_result (ctx); if (result->invalid_recipients) { fprintf (stderr, "Invalid recipient encountered: %s\n", result->invalid_recipients->fpr); exit (1); } print_data (out); /* Now try to decrypt */ gpgme_data_seek (out, 0, SEEK_SET); gpgme_data_release (in); err = gpgme_data_new (&in); fail_if_err (err); err = gpgme_op_decrypt (ctx, out, in); fail_if_err (err); fputs ("Begin Result Decryption:\n", stdout); print_data (in); fputs ("End Result.\n", stdout); dec_result = gpgme_op_decrypt_result (ctx); if (dec_result->unsupported_algorithm || dec_result->wrong_key_usage) { fprintf (stderr, "%s:%d: Decryption failed\n", __FILE__, __LINE__); exit (1); } text2 = gpgme_data_release_and_get_mem (in, &len); if (strncmp (text, text2, len)) { fprintf (stderr, "%s:%d: Wrong plaintext\n", __FILE__, __LINE__); exit (1); } recipient = dec_result->recipients; if (!recipient || recipient->next) { fprintf (stderr, "%s:%d: Invalid recipients \n", __FILE__, __LINE__); exit (1); } if (strncmp (recipient->keyid, "5381EA4EE29BA37F", 16)) { fprintf (stderr, "%s:%d: Not encrypted to recipient's subkey \n", __FILE__, __LINE__); exit (1); } gpgme_key_unref (key[0]); free (text2); gpgme_data_release (out); gpgme_release (ctx); return 0; }