diff options
Diffstat (limited to 'src/test/fuzz/crypto_poly1305.cpp')
-rw-r--r-- | src/test/fuzz/crypto_poly1305.cpp | 37 |
1 files changed, 34 insertions, 3 deletions
diff --git a/src/test/fuzz/crypto_poly1305.cpp b/src/test/fuzz/crypto_poly1305.cpp index ac555ed68c..f49729a34b 100644 --- a/src/test/fuzz/crypto_poly1305.cpp +++ b/src/test/fuzz/crypto_poly1305.cpp @@ -14,9 +14,40 @@ FUZZ_TARGET(crypto_poly1305) { FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()}; - const std::vector<uint8_t> key = ConsumeFixedLengthByteVector(fuzzed_data_provider, POLY1305_KEYLEN); + const std::vector<uint8_t> key = ConsumeFixedLengthByteVector(fuzzed_data_provider, Poly1305::KEYLEN); const std::vector<uint8_t> in = ConsumeRandomLengthByteVector(fuzzed_data_provider); - std::vector<uint8_t> tag_out(POLY1305_TAGLEN); - poly1305_auth(tag_out.data(), in.data(), in.size(), key.data()); + std::vector<std::byte> tag_out(Poly1305::TAGLEN); + Poly1305{MakeByteSpan(key)}.Update(MakeByteSpan(in)).Finalize(tag_out); +} + + +FUZZ_TARGET(crypto_poly1305_split) +{ + FuzzedDataProvider provider{buffer.data(), buffer.size()}; + + // Read key and instantiate two Poly1305 objects with it. + auto key = provider.ConsumeBytes<std::byte>(Poly1305::KEYLEN); + key.resize(Poly1305::KEYLEN); + Poly1305 poly_full{key}, poly_split{key}; + + // Vector that holds all bytes processed so far. + std::vector<std::byte> total_input; + + // Process input in pieces. + LIMITED_WHILE(provider.remaining_bytes(), 100) { + auto in = provider.ConsumeRandomLengthString(); + poly_split.Update(MakeByteSpan(in)); + // Update total_input to match what was processed. + total_input.insert(total_input.end(), MakeByteSpan(in).begin(), MakeByteSpan(in).end()); + } + + // Process entire input at once. + poly_full.Update(total_input); + + // Verify both agree. + std::array<std::byte, Poly1305::TAGLEN> tag_split, tag_full; + poly_split.Finalize(tag_split); + poly_full.Finalize(tag_full); + assert(tag_full == tag_split); } |