1 files changed, 48 insertions, 0 deletions
diff --git a/src/cmd/prime.cpp b/src/cmd/prime.cpp
new file mode 100644
index 000000000..61f535dd7
--- /dev/null
+++ b/src/cmd/prime.cpp
@@ -0,0 +1,48 @@
+/*
+* (C) 2015 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#include "apps.h"
+
+#if defined(BOTAN_HAS_NUMBERTHEORY)
+
+#include <botan/numthry.h>
+
+#include <algorithm>
+#include <iostream>
+
+namespace {
+
+int prime(int argc, char* argv[])
+   {
+   if(argc < 2)
+      {
+      std::cout << "Usage: " << argv[0] << " bits count" << std::endl;
+      return 1;
+      }
+
+   AutoSeeded_RNG rng;
+   const size_t bits = to_u32bit(argv[1]);
+   const size_t cnt = argv[2] != nullptr ? to_u32bit(argv[2]) : 1;
+
+   for(size_t i = 0; i != cnt; ++i)
+      {
+      const BigInt p = random_prime(rng, bits);
+      std::cout << p << "\n";
+
+      if(p.bits() != bits)
+         {
+         std::cout << "Result not exactly requested bit size, got " << p.bits() << "\n";
+         }
+      }
+
+   return 0;
+   }
+
+}
+
+REGISTER_APP(prime);
+
+#endif