Add sanity check after key generation

Add a sanity check to prevent cosmic rays from flipping a bit in the
generated public key, or bugs in the elliptic curve code. This is
simply done by signing a (randomized) message, and verifying the
result.

1 files changed, 20 insertions, 0 deletions

diff --git a/src/test/key_tests.cpp b/src/test/key_tests.cpp
index b32f3774fe..f9e35e0166 100644
--- a/src/test/key_tests.cpp
+++ b/src/test/key_tests.cpp
@@ -82,6 +82,26 @@ BOOST_AUTO_TEST_CASE(key_test1)
     CPubKey pubkey1C = key1C.GetPubKey();
     CPubKey pubkey2C = key2C.GetPubKey();
 
+    BOOST_CHECK(key1.VerifyPubKey(pubkey1));
+    BOOST_CHECK(!key1.VerifyPubKey(pubkey1C));
+    BOOST_CHECK(!key1.VerifyPubKey(pubkey2));
+    BOOST_CHECK(!key1.VerifyPubKey(pubkey2C));
+
+    BOOST_CHECK(!key1C.VerifyPubKey(pubkey1));
+    BOOST_CHECK(key1C.VerifyPubKey(pubkey1C));
+    BOOST_CHECK(!key1C.VerifyPubKey(pubkey2));
+    BOOST_CHECK(!key1C.VerifyPubKey(pubkey2C));
+
+    BOOST_CHECK(!key2.VerifyPubKey(pubkey1));
+    BOOST_CHECK(!key2.VerifyPubKey(pubkey1C));
+    BOOST_CHECK(key2.VerifyPubKey(pubkey2));
+    BOOST_CHECK(!key2.VerifyPubKey(pubkey2C));
+
+    BOOST_CHECK(!key2C.VerifyPubKey(pubkey1));
+    BOOST_CHECK(!key2C.VerifyPubKey(pubkey1C));
+    BOOST_CHECK(!key2C.VerifyPubKey(pubkey2));
+    BOOST_CHECK(key2C.VerifyPubKey(pubkey2C));
+
     BOOST_CHECK(addr1.Get()  == CTxDestination(pubkey1.GetID()));
     BOOST_CHECK(addr2.Get()  == CTxDestination(pubkey2.GetID()));
     BOOST_CHECK(addr1C.Get() == CTxDestination(pubkey1C.GetID()));