monzero-core.git/src/crypto, branch v0.18.3.0

Fixed deadlock and crash when syncing with full dataset on Windows

2023-03-29T06:44:20Z

It's not allowed to use WaitForSingleObject with _beginthread, because the thread closes its own handle before exiting. So the wait function will either wait on an invalid handle, or on a different handle used by something else. Or, if it starts waiting before the thread exits, the behavior is undefined according to MS: "If this handle is closed while the wait is still pending, the function's behavior is undefined." In my test sync I observed threads getting stuck infinitely on WaitForSingleObject, and then rx_set_main_seedhash spamming new threads when RandomX seed changes again. Eventually the system ran out of resources, and monerod aborted with "Couldn't start RandomX seed thread" message. This PR fixes it by using `_beginthreadex` instead and explicitly closing the handle when it's safe.

Demote large pages warning to `mdebug`

2023-01-17T17:16:47Z

RandomX: print VM allocation warnings only once

2023-01-11T18:18:41Z

Refactored rx-slow-hash.c

2022-12-14T06:21:00Z

- Straight-forward call interface: `void rx_slow_hash(const char *seedhash, const void *data, size_t length, char *result_hash)` - Consensus chain seed hash is now updated by calling `rx_set_main_seedhash` whenever a block is added/removed or a reorg happens - `rx_slow_hash` will compute correct hash no matter if `rx_set_main_seedhash` was called or not (the only difference is performance) - New environment variable `MONERO_RANDOMX_FULL_MEM` to force use the full dataset for PoW verification (faster block verification) - When dataset is used for PoW verification, dataset updates don't stall other threads (verification is done in light mode then) - When mining is running, PoW checks now also use dataset for faster verification

Merge pull request #8262

2022-05-10T21:47:13Z

268a039 Optimized keccak implementation (SChernykh)

Optimized keccak implementation

2022-04-18T08:01:13Z

All tests were conducted on the same PC (Ryzen 5 5600X running at fixed 4.65 GHz). Before: test_cn_fast_hash<32> (100000 calls) - OK: 1 us/call test_cn_fast_hash<16384> (1000 calls) - OK: 164 us/call After: test_cn_fast_hash<32> (100000 calls) - OK: 0 us/call test_cn_fast_hash<16384> (1000 calls) - OK: 31 us/call More than 5 times speedup for cn_fast_hash. Also noticed consistent 1-2% improvement in test_construct_tx results.

Add view tags to outputs to reduce wallet scanning time

2022-04-18T07:49:53Z

Implements view tags as proposed by @UkoeHB in MRL issue https://github.com/monero-project/research-lab/issues/73 At tx construction, the sender adds a 1-byte view tag to each output. The view tag is derived from the sender-receiver shared secret. When scanning for outputs, the receiver can check the view tag for a match, in order to reduce scanning time. When the view tag does not match, the wallet avoids the more expensive EC operations when deriving the output public key using the shared secret.

CMake: Add missing headers via monero_find_all_headers macro

2022-04-06T06:12:44Z

2022-03-04T05:59:20Z

Merge pull request #8052

2022-03-02T23:52:51Z

c36ea26 fix ge_p3_is_point_at_infinity(), which is evaluating field elements that haven't been reduced by the field order (koe)