From 0664f5fe1f77f08d235aa3750b59428257b0b91d Mon Sep 17 00:00:00 2001 From: Pieter Wuille Date: Fri, 11 Sep 2020 14:33:30 -0700 Subject: Support for Schnorr signatures and integration in SignatureCheckers (BIP 340) This enables the schnorrsig module in libsecp256k1, adds the relevant types and functions to src/pubkey, as well as in higher-level `SignatureChecker` classes. The (verification side of the) BIP340 test vectors is also added. --- src/test/fuzz/script_sigcache.cpp | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) (limited to 'src/test/fuzz/script_sigcache.cpp') diff --git a/src/test/fuzz/script_sigcache.cpp b/src/test/fuzz/script_sigcache.cpp index 0de1617d5..87af71897 100644 --- a/src/test/fuzz/script_sigcache.cpp +++ b/src/test/fuzz/script_sigcache.cpp @@ -35,11 +35,19 @@ void test_one_input(const std::vector& buffer) const bool store = fuzzed_data_provider.ConsumeBool(); PrecomputedTransactionData tx_data; CachingTransactionSignatureChecker caching_transaction_signature_checker{mutable_transaction ? &tx : nullptr, n_in, amount, store, tx_data}; - const std::optional pub_key = ConsumeDeserializable(fuzzed_data_provider); - if (pub_key) { - const std::vector random_bytes = ConsumeRandomLengthByteVector(fuzzed_data_provider); - if (!random_bytes.empty()) { - (void)caching_transaction_signature_checker.VerifyECDSASignature(random_bytes, *pub_key, ConsumeUInt256(fuzzed_data_provider)); + if (fuzzed_data_provider.ConsumeBool()) { + const auto random_bytes = fuzzed_data_provider.ConsumeBytes(64); + const XOnlyPubKey pub_key(ConsumeUInt256(fuzzed_data_provider)); + if (random_bytes.size() == 64) { + (void)caching_transaction_signature_checker.VerifySchnorrSignature(random_bytes, pub_key, ConsumeUInt256(fuzzed_data_provider)); + } + } else { + const auto random_bytes = ConsumeRandomLengthByteVector(fuzzed_data_provider); + const auto pub_key = ConsumeDeserializable(fuzzed_data_provider); + if (pub_key) { + if (!random_bytes.empty()) { + (void)caching_transaction_signature_checker.VerifyECDSASignature(random_bytes, *pub_key, ConsumeUInt256(fuzzed_data_provider)); + } } } } -- cgit v1.2.3