diff options
Diffstat (limited to 'src/tool/generate_ed25519.cc')
-rw-r--r-- | src/tool/generate_ed25519.cc | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/tool/generate_ed25519.cc b/src/tool/generate_ed25519.cc new file mode 100644 index 0000000..15d3692 --- /dev/null +++ b/src/tool/generate_ed25519.cc @@ -0,0 +1,67 @@ +/* Copyright (c) 2015, Google Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ + +#include <openssl/curve25519.h> + +#include <errno.h> +#include <stdio.h> +#include <string.h> + +#include "../crypto/test/scoped_types.h" +#include "internal.h" + + +static const struct argument kArguments[] = { + { + "-out-public", kRequiredArgument, "The file to write the public key to", + }, + { + "-out-private", kRequiredArgument, + "The file to write the private key to", + }, + { + "", kOptionalArgument, "", + }, +}; + +static bool WriteToFile(const std::string &path, const uint8_t *in, + size_t in_len) { + ScopedFILE file(fopen(path.c_str(), "wb")); + if (!file) { + fprintf(stderr, "Failed to open '%s': %s\n", path.c_str(), strerror(errno)); + return false; + } + if (fwrite(in, in_len, 1, file.get()) != 1) { + fprintf(stderr, "Failed to write to '%s': %s\n", path.c_str(), + strerror(errno)); + return false; + } + return true; +} + +bool GenerateEd25519Key(const std::vector<std::string> &args) { + std::map<std::string, std::string> args_map; + + if (!ParseKeyValueArguments(&args_map, args, kArguments)) { + PrintUsage(kArguments); + return false; + } + + uint8_t public_key[32], private_key[64]; + ED25519_keypair(public_key, private_key); + + return WriteToFile(args_map["-out-public"], public_key, sizeof(public_key)) && + WriteToFile(args_map["-out-private"], private_key, + sizeof(private_key)); +} |