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-rw-r--r--src/cmd/is_prime.cpp33
1 files changed, 33 insertions, 0 deletions
diff --git a/src/cmd/is_prime.cpp b/src/cmd/is_prime.cpp
new file mode 100644
index 000000000..658401690
--- /dev/null
+++ b/src/cmd/is_prime.cpp
@@ -0,0 +1,33 @@
+#include "apps.h"
+#include <botan/numthry.h>
+
+int is_prime_main(int argc, char* argv[])
+ {
+ if(argc != 2 && argc != 3)
+ {
+ std::cerr << "Usage: " << argv[0] << " n <prob>\n";
+ return 2;
+ }
+
+ BigInt n(argv[1]);
+
+ size_t prob = 56;
+
+ if(argc == 3)
+ prob = to_u32bit(argv[2]);
+
+ AutoSeeded_RNG rng;
+
+ const bool prime = is_prime(n, rng, prob);
+
+ if(prime)
+ {
+ std::cout << n << " is prime\n";
+ return 0;
+ }
+ else
+ {
+ std::cout << n << " is not prime\n";
+ return 1;
+ }
+ }