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/*
* Copyright (c) 2018, [Ribose Inc](https://www.ribose.com).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <string.h>
#include <time.h>
#include <rnp/rnp.h>
#define RNP_SUCCESS 0
static int
ffi_encrypt()
{
rnp_ffi_t ffi = NULL;
rnp_op_encrypt_t encrypt = NULL;
rnp_key_handle_t key = NULL;
rnp_input_t keyfile = NULL;
rnp_input_t input = NULL;
rnp_output_t output = NULL;
const char * message = "RNP encryption sample message";
int result = 1;
/* initialize FFI object */
if (rnp_ffi_create(&ffi, "GPG", "GPG") != RNP_SUCCESS) {
return result;
}
/* load public keyring - we do not need secret for encryption */
if (rnp_input_from_path(&keyfile, "pubring.pgp") != RNP_SUCCESS) {
fprintf(stdout, "failed to open pubring.pgp. Did you run ./generate sample?\n");
goto finish;
}
/* we may use RNP_LOAD_SAVE_SECRET_KEYS | RNP_LOAD_SAVE_PUBLIC_KEYS as well */
if (rnp_load_keys(ffi, "GPG", keyfile, RNP_LOAD_SAVE_PUBLIC_KEYS) != RNP_SUCCESS) {
fprintf(stdout, "failed to read pubring.pgp\n");
goto finish;
}
rnp_input_destroy(keyfile);
keyfile = NULL;
/* create memory input and file output objects for the message and encrypted message */
if (rnp_input_from_memory(&input, (uint8_t *) message, strlen(message), false) !=
RNP_SUCCESS) {
fprintf(stdout, "failed to create input object\n");
goto finish;
}
if (rnp_output_to_path(&output, "encrypted.asc") != RNP_SUCCESS) {
fprintf(stdout, "failed to create output object\n");
goto finish;
}
/* create encryption operation */
if (rnp_op_encrypt_create(&encrypt, ffi, input, output) != RNP_SUCCESS) {
fprintf(stdout, "failed to create encrypt operation\n");
goto finish;
}
/* setup encryption parameters */
rnp_op_encrypt_set_armor(encrypt, true);
rnp_op_encrypt_set_file_name(encrypt, "message.txt");
rnp_op_encrypt_set_file_mtime(encrypt, (uint32_t) time(NULL));
rnp_op_encrypt_set_compression(encrypt, "ZIP", 6);
rnp_op_encrypt_set_cipher(encrypt, RNP_ALGNAME_AES_256);
rnp_op_encrypt_set_aead(encrypt, "None");
/* locate recipient's key and add it to the operation context. While we search by userid
* (which is easier), you can search by keyid, fingerprint or grip. */
if (rnp_locate_key(ffi, "userid", "rsa@key", &key) != RNP_SUCCESS) {
fprintf(stdout, "failed to locate recipient key rsa@key.\n");
goto finish;
}
if (rnp_op_encrypt_add_recipient(encrypt, key) != RNP_SUCCESS) {
fprintf(stdout, "failed to add recipient\n");
goto finish;
}
rnp_key_handle_destroy(key);
key = NULL;
/* add encryption password as well */
if (rnp_op_encrypt_add_password(
encrypt, "encpassword", RNP_ALGNAME_SHA256, 0, RNP_ALGNAME_AES_256) != RNP_SUCCESS) {
fprintf(stdout, "failed to add encryption password\n");
goto finish;
}
/* execute encryption operation */
if (rnp_op_encrypt_execute(encrypt) != RNP_SUCCESS) {
fprintf(stdout, "encryption failed\n");
goto finish;
}
fprintf(stdout, "Encryption succeeded. Encrypted message written to file encrypted.asc\n");
result = 0;
finish:
rnp_op_encrypt_destroy(encrypt);
rnp_input_destroy(keyfile);
rnp_input_destroy(input);
rnp_output_destroy(output);
rnp_key_handle_destroy(key);
rnp_ffi_destroy(ffi);
return result;
}
int
main(int argc, char **argv)
{
return ffi_encrypt();
}
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