1 files changed, 69 insertions, 0 deletions
diff --git a/src/tool/genrsa.cc b/src/tool/genrsa.cc
new file mode 100644
index 0000000..4b39401
--- /dev/null
+++ b/src/tool/genrsa.cc
@@ -0,0 +1,69 @@
+/* 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/bio.h>
+#include <openssl/bn.h>
+#include <openssl/err.h>
+#include <openssl/pem.h>
+#include <openssl/rsa.h>
+
+#include "../crypto/test/scoped_types.h"
+#include "internal.h"
+
+
+static const struct argument kArguments[] = {
+    {
+     "-nprimes", kOptionalArgument,
+     "The number of primes to generate (default: 2)",
+    },
+    {
+     "-bits", kOptionalArgument,
+     "The number of bits in the modulus (default: 2048)",
+    },
+    {
+     "", kOptionalArgument, "",
+    },
+};
+
+bool GenerateRSAKey(const std::vector<std::string> &args) {
+  std::map<std::string, std::string> args_map;
+
+  if (!ParseKeyValueArguments(&args_map, args, kArguments)) {
+    PrintUsage(kArguments);
+    return false;
+  }
+
+  unsigned bits, nprimes = 0;
+  if (!GetUnsigned(&bits, "-bits", 2048, args_map) ||
+      !GetUnsigned(&nprimes, "-nprimes", 2, args_map)) {
+    PrintUsage(kArguments);
+    return false;
+  }
+
+  ScopedRSA rsa(RSA_new());
+  ScopedBIGNUM e(BN_new());
+  ScopedBIO bio(BIO_new_fp(stdout, BIO_NOCLOSE));
+
+  if (!BN_set_word(e.get(), RSA_F4) ||
+      !RSA_generate_multi_prime_key(rsa.get(), bits, nprimes, e.get(), NULL) ||
+      !PEM_write_bio_RSAPrivateKey(bio.get(), rsa.get(), NULL /* cipher */,
+                                   NULL /* key */, 0 /* key len */,
+                                   NULL /* password callback */,
+                                   NULL /* callback arg */)) {
+    ERR_print_errors_fp(stderr);
+    return false;
+  }
+
+  return true;
+}