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authorlloyd <lloyd@randombit.net>2010-02-25 20:15:54 +0000
committerlloyd <lloyd@randombit.net>2010-02-25 20:15:54 +0000
commit790bf7561888953c34b2f5264a326bdb46b1174a (patch)
tree8932eb965bb93899f9ec221ac8bb97822782dcfe
parentf39241bf20dc6781be576f17b264ee1a6bf7d58b (diff)
create_random_point was used in one tests though, so add it back in ec_tests.cpp
-rw-r--r--checks/ec_tests.cpp25
1 files changed, 25 insertions, 0 deletions
diff --git a/checks/ec_tests.cpp b/checks/ec_tests.cpp
index 4115a84f1..2915eb2da 100644
--- a/checks/ec_tests.cpp
+++ b/checks/ec_tests.cpp
@@ -35,6 +35,31 @@ using namespace Botan;
namespace {
+PointGFp create_random_point(RandomNumberGenerator& rng,
+ const CurveGFp& curve)
+ {
+ const BigInt& p = curve.get_p();
+
+ while(true)
+ {
+ BigInt r(rng, p.bits());
+
+ GFpElement x = GFpElement(p, r);
+ GFpElement x3 = x * x * x;
+
+ GFpElement ax(curve.get_p(), curve.get_a());
+ ax *= x;
+
+ GFpElement bx3(curve.get_p(), curve.get_b());
+ bx3 *= x3;
+
+ GFpElement y = ax + bx3;
+
+ if(ressol(y.get_value(), p) > 0)
+ return PointGFp(curve, x.get_value(), y.get_value());
+ }
+ }
+
void test_point_turn_on_sp_red_mul()
{
std::cout << "." << std::flush;