1 /* Copyright (c) 2015, Google Inc.
2 *
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
6 *
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
14
15 #include <openssl/curve25519.h>
16
17 #include <errno.h>
18 #include <stdio.h>
19 #include <string.h>
20
21 #include "../crypto/test/scoped_types.h"
22 #include "internal.h"
23
24
25 static const struct argument kArguments[] = {
26 {
27 "-out-public", kRequiredArgument, "The file to write the public key to",
28 },
29 {
30 "-out-private", kRequiredArgument,
31 "The file to write the private key to",
32 },
33 {
34 "", kOptionalArgument, "",
35 },
36 };
37
WriteToFile(const std::string & path,const uint8_t * in,size_t in_len)38 static bool WriteToFile(const std::string &path, const uint8_t *in,
39 size_t in_len) {
40 ScopedFILE file(fopen(path.c_str(), "wb"));
41 if (!file) {
42 fprintf(stderr, "Failed to open '%s': %s\n", path.c_str(), strerror(errno));
43 return false;
44 }
45 if (fwrite(in, in_len, 1, file.get()) != 1) {
46 fprintf(stderr, "Failed to write to '%s': %s\n", path.c_str(),
47 strerror(errno));
48 return false;
49 }
50 return true;
51 }
52
GenerateEd25519Key(const std::vector<std::string> & args)53 bool GenerateEd25519Key(const std::vector<std::string> &args) {
54 std::map<std::string, std::string> args_map;
55
56 if (!ParseKeyValueArguments(&args_map, args, kArguments)) {
57 PrintUsage(kArguments);
58 return false;
59 }
60
61 uint8_t public_key[32], private_key[64];
62 ED25519_keypair(public_key, private_key);
63
64 return WriteToFile(args_map["-out-public"], public_key, sizeof(public_key)) &&
65 WriteToFile(args_map["-out-private"], private_key,
66 sizeof(private_key));
67 }
68