Initial checkin1.5.6

1 files changed, 55 insertions, 0 deletions

diff --git a/doc/examples/rsa_kgen.cpp b/doc/examples/rsa_kgen.cpp
new file mode 100644
index 000000000..f2601101e
--- /dev/null
+++ b/doc/examples/rsa_kgen.cpp
@@ -0,0 +1,55 @@
+/*
+Generate an RSA key of a specified bitlength, and put it into a pair of key
+files. One is the public key in X.509 format (PEM encoded), the private key is
+in PKCS #8 format (also PEM encoded).
+
+Written by Jack Lloyd ([email protected]), June 2-3, 2002
+  Updated to use X.509 and PKCS #8 on October 21, 2002
+
+This file is in the public domain
+*/
+
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <botan/botan.h>
+#include <botan/rsa.h>
+using namespace Botan;
+
+int main(int argc, char* argv[])
+   {
+   if(argc != 3)
+      {
+      std::cout << "Usage: " << argv[0] << " bitsize passphrase" << std::endl;
+      return 1;
+      }
+
+   u32bit bits = std::atoi(argv[1]);
+   if(bits < 512 || bits > 4096)
+      {
+      std::cout << "Invalid argument for bitsize" << std::endl;
+      return 1;
+      }
+
+   std::string passphrase(argv[2]);
+
+   std::ofstream pub("rsapub.pem");
+   std::ofstream priv("rsapriv.pem");
+   if(!priv || !pub)
+      {
+      std::cout << "Couldn't write output files" << std::endl;
+      return 1;
+      }
+
+   try {
+      LibraryInitializer init;
+      RSA_PrivateKey key(bits);
+      pub << X509::PEM_encode(key);
+      priv << PKCS8::PEM_encode(key, passphrase);
+   }
+   catch(std::exception& e)
+      {
+      std::cout << "Exception caught: " << e.what() << std::endl;
+      }
+   return 0;
+   }