Add bcrypt and keywrap examples

2 files changed, 83 insertions, 0 deletions

diff --git a/doc/examples/bcrypt.cpp b/doc/examples/bcrypt.cpp
new file mode 100644
index 000000000..27a98cf33
--- /dev/null
+++ b/doc/examples/bcrypt.cpp
@@ -0,0 +1,45 @@
+/*
+* Bcrypt example
+* (C) 2011 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/botan.h>
+#include <botan/bcrypt.h>
+#include <iostream>
+
+using namespace Botan;
+
+int main(int argc, char* argv[])
+   {
+   if(argc != 2 && argc != 3)
+     {
+     std::cout << "Usage: " << argv[0] << " password\n"
+               << "       " << argv[0] << " password passhash\n";
+     return 1;
+     }
+
+   LibraryInitializer init;
+
+   if(argc == 2)
+      {
+      AutoSeeded_RNG rng;
+
+      std::cout << generate_bcrypt(argv[1], rng, 12) << "\n";
+      }
+   else if(argc == 3)
+      {
+      if(strlen(argv[2]) != 60)
+         {
+         std::cout << "Note: hash " << argv[2]
+                   << " has wrong length and cannot be valid\n";
+         }
+
+      const bool ok = check_bcrypt(argv[1], argv[2]);
+
+      std::cout << "Password is " << (ok ? "valid" : "NOT valid") << "\n";
+      }
+
+   return 0;
+   }
diff --git a/doc/examples/keywrap.cpp b/doc/examples/keywrap.cpp
new file mode 100644
index 000000000..730bcb6c9
--- /dev/null
+++ b/doc/examples/keywrap.cpp
@@ -0,0 +1,38 @@
+/*
+* NIST keywrap example
+* (C) 2011 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/botan.h>
+#include <botan/rfc3394.h>
+#include <botan/hex.h>
+#include <iostream>
+
+int main()
+   {
+   using namespace Botan;
+
+   LibraryInitializer init;
+
+   AutoSeeded_RNG rng;
+
+   // The key to encrypt
+   SymmetricKey key(rng, 24);
+
+   // The key encryption key
+   SymmetricKey kek(rng, 32);
+
+   std::cout << "Original:  " << key.as_string() << "\n";
+
+   Algorithm_Factory& af = global_state().algorithm_factory();
+
+   SecureVector<byte> enc = rfc3394_keywrap(key.bits_of(), kek, af);
+
+   std::cout << "Encrypted: " << hex_encode(enc) << "\n";
+
+   SecureVector<byte> dec = rfc3394_keyunwrap(enc, kek, af);
+
+   std::cout << "Decrypted: " << hex_encode(dec) << "\n";
+   }