1 files changed, 28 insertions, 0 deletions
diff --git a/library/cpp/openssl/crypto/ut/rsa_ut.cpp b/library/cpp/openssl/crypto/ut/rsa_ut.cpp
new file mode 100644
index 0000000000..99f0377432
--- /dev/null
+++ b/library/cpp/openssl/crypto/ut/rsa_ut.cpp
@@ -0,0 +1,28 @@
+#include "rsa.h"
+
+#include <library/cpp/testing/unittest/registar.h>
+#include <library/cpp/openssl/big_integer/big_integer.h>
+
+#include <util/system/byteorder.h>
+
+using namespace NOpenSsl;
+using namespace NOpenSsl::NRsa;
+
+Y_UNIT_TEST_SUITE(Rsa) {
+    Y_UNIT_TEST(Encrypt) {
+        // example from Ru.Wikipedia
+        const auto originData = TBigInteger::FromULong(111111);
+
+        const auto n = TBigInteger::FromULong(3);
+        const auto e = TBigInteger::FromULong(9173503);
+
+        // check key reuse
+        for (size_t i = 0; i < 10; ++i) {
+            UNIT_ASSERT_VALUES_EQUAL(TBigInteger::FromULong(4051753), TPublicKey(n, e).EncryptNoPad(originData));
+        }
+
+        UNIT_ASSERT_VALUES_EQUAL(originData, TBigInteger::FromULong(111111));
+        UNIT_ASSERT_VALUES_EQUAL(n, TBigInteger::FromULong(3));
+        UNIT_ASSERT_VALUES_EQUAL(e, TBigInteger::FromULong(9173503));
+    }
+};