From bdc2a656c2d2a61d226fde1d1fd4e79664106e18 Mon Sep 17 00:00:00 2001 From: josibake Date: Fri, 10 May 2024 17:58:38 +0200 Subject: [PATCH] tests: add test for KeyPair Reuse existing bip340 test vectors. --- src/test/key_tests.cpp | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/src/test/key_tests.cpp b/src/test/key_tests.cpp index 86a8d17a76406..47a6b9269897b 100644 --- a/src/test/key_tests.cpp +++ b/src/test/key_tests.cpp @@ -327,6 +327,16 @@ BOOST_AUTO_TEST_CASE(bip340_test_vectors) // Verify those signatures for good measure. BOOST_CHECK(pubkey.VerifySchnorr(msg256, sig64)); + // Repeat the same check, but use the KeyPair directly without any merkle tweak + KeyPair keypair = key.ComputeKeyPair(/*merkle_root=*/nullptr); + CKey keypair_seckey; + BOOST_CHECK(keypair.GetKey(keypair_seckey)); + BOOST_CHECK(key == keypair_seckey); + bool kp_ok = keypair.SignSchnorr(msg256, sig64, aux256); + BOOST_CHECK(kp_ok); + XOnlyPubKey keypair_xonly{keypair_seckey.GetPubKey()}; + BOOST_CHECK(keypair_xonly.VerifySchnorr(msg256, sig64)); + // Do 10 iterations where we sign with a random Merkle root to tweak, // and compare against the resulting tweaked keys, with random aux. // In iteration i=0 we tweak with empty Merkle tree. @@ -340,6 +350,16 @@ BOOST_AUTO_TEST_CASE(bip340_test_vectors) bool ok = key.SignSchnorr(msg256, sig64, &merkle_root, aux256); BOOST_CHECK(ok); BOOST_CHECK(tweaked_key.VerifySchnorr(msg256, sig64)); + + // Repeat the same check, but use the KeyPair class directly + KeyPair keypair = key.ComputeKeyPair(&merkle_root); + CKey keypair_seckey; + BOOST_CHECK(keypair.GetKey(keypair_seckey)); + XOnlyPubKey keypair_xonly{keypair_seckey.GetPubKey()}; + BOOST_CHECK(tweaked_key == keypair_xonly); + bool kp_ok = keypair.SignSchnorr(msg256, sig64, aux256); + BOOST_CHECK(kp_ok); + BOOST_CHECK(keypair_xonly.VerifySchnorr(msg256, sig64)); } } }