Minimalistic JIT code generator for random math sequence in CryptonightR.
Usage:
- Allocate writable and executable memory
- Call v4_generate_JIT_code with "buf" pointed to memory allocated on the previous step
- Call the generated code instead of "v4_random_math(code, r)", omit the "code" parameter
NetBSD emits:
warning: Warning: reference to the libc supplied alloca(3); this most likely will not work. Please use the compiler provided version of alloca(3), by supplying the appropriate compiler flags (e.g. not -std=c89).
and man 3 alloca says:
Normally, gcc(1) translates calls to alloca() with inlined code. This is not done when either the -ansi, -std=c89, -std=c99, or the
-std=c11 option is given and the header <alloca.h> is not included. Otherwise, (without an -ansi or -std=c* option) the glibc version of
<stdlib.h> includes <alloca.h> and that contains the lines:
#ifdef __GNUC__
#define alloca(size) __builtin_alloca (size)
#endif
It looks like alloca is a bad idea in modern C/C++, so we use
VLAs for C and std::vector for C++.
- These functions are declared twice in slow-hash.c. Remove one of the copies.
- The declarations have the wrong return type, should be void, not int.
Function definitions here: 1e74586ee9/src/crypto/aesb.c (L151-L180)
Test plan: make release-test
9137ad2c blockchain: add a testnet v9 a day after v8 (moneromooo-monero)
ac4f71c2 wallet2: bump testnet rollback to account for coming reorg (moneromooo-monero)
8f418a6d bulletproofs: #include <openssl/bn.h> (moneromooo-monero)
2bf63650 bulletproofs: speed up the latest changes a bit (moneromooo-monero)
044dff5a bulletproofs: scale points by 8 to ensure subgroup validity (moneromooo-monero)
c83012c4 bulletproofs: match aggregated verification to sarang's latest prototype (moneromooo-monero)
ce0c7432 performance_tests: add padded bulletproof construction (moneromooo-monero)
1224e53b core_tests: add a test for 4-aggregated BP verification (moneromooo-monero)
0e6ed559 fuzz_tests: add a bulletproof fuzz test (moneromooo-monero)
463434d1 more comprehensive test for ge_p3 comparison to identity/point at infinity (moneromooo-monero)
d0a0565f unit_tests: add a few more multiexp unit tests (moneromooo-monero)
6526d87f core_tests: add a test for a tx with empty bulletproof (moneromooo-monero)
a129bbd9 multiexp: fix maxscalar off by one (moneromooo-monero)
7ed496cc ringct: error out when hashToPoint* returns the point at infinity (moneromooo-monero)
d1591853 cryptonote_basic: check output type before using it (moneromooo-monero)
61632dc1 ringct: prevent a potential very large allocation (moneromooo-monero)
a4317e61 crypto: some paranoid checks in generate_signature/check_signature (moneromooo-monero)
7434df1c crypto: never return zero in random32_unbiased (moneromooo-monero)
0825e974 multiexp: fix wrong Bos-Coster result for 1 non trivial input (moneromooo-monero)
a1359ad4 Check inputs to addKeys are in range (moneromooo-monero)
fe0fa3b9 bulletproofs: reject x, y, z, or w[i] being zero (moneromooo-monero)
5ffb2ff9 v8: per byte fee, pad bulletproofs, fixed 11 ring size (moneromooo-monero)
869b3bf8 bulletproofs: a few fixes from the Kudelski review (moneromooo-monero)
c4291762 bulletproofs: reject points not in the main subgroup (moneromooo-monero)
15697177 bulletproofs: speed up a few multiplies using existing Hi cache (moneromooo-monero)
0b05a0fa Add Pippenger cache and limit Straus cache size (moneromooo-monero)
51eb3bdc add pippenger unit tests (moneromooo-monero)
b17b8db3 performance_tests: add stats and loop count multiplier options (moneromooo-monero)
7314d919 perf_timer: split timer class into a base one and a logging one (moneromooo-monero)
d126a02b performance_tests: add aggregated bulletproof tx verification (moneromooo-monero)
263431c4 Pippenger multiexp (moneromooo-monero)
1ed0ed4d multiexp: cut down on memory allocations (moneromooo-monero)
1b867e7f precalc the ge_p3 representation of H (moneromooo-monero)
ef56529f performance_tests: document the tested bulletproof layouts (moneromooo-monero)
30111780 unit_tests: a couple more bulletproof unit tests for gamma (moneromooo-monero)
c444b1b2 require canonical multi output bulletproof layout (moneromooo-monero)
7e67c52f Add a define for the max number of bulletproof multi-outputs (moneromooo-monero)
2a8fcb42 Bulletproof aggregated verification and tests (moneromooo-monero)
126196b0 multiexp: some speedups (moneromooo-monero)
71d67bda aligned: aligned memory alloc/realloc/free (moneromooo-monero)
cb9ecab1 performance_tests: add signature generation/verification (moneromooo-monero)
bacf0a1e bulletproofs: add aggregated verification (moneromooo-monero)
e895c3de make straus cached mode thread safe, and add tests for it (moneromooo-monero)
7f48bf05 multiexp: bos coster now works for just one point (moneromooo-monero)
9ce9f8ca bulletproofs: add multi output bulletproofs to rct (moneromooo-monero)
f34e2e20 performance_tests: add tx checking tests with more than 2 outputs (moneromooo-monero)
0793184b performance_tests: add a --verbose flag, and default to terse (moneromooo-monero)
939bc223 add Straus multiexp (moneromooo-monero)
9ff6e6a0 ringct: add bos coster multiexp (moneromooo-monero)
e9164bb3 bulletproofs: misc optimizations (moneromooo-monero)
112f32f0 performance_tests: add crypto ops (moneromooo-monero)
f5d7b993 performance_tests: add bulletproofs (moneromooo-monero)
8f4ce989 performance_tests: add RingCT MLSAG gen/ver tests (moneromooo-monero)
1aa10c43 performance_tests: add (Borromean) range proofs (moneromooo-monero)
aacfd6e3 bulletproofs: multi-output bulletproofs (moneromooo-monero)
cb1cc757 performance_tests: don't override log level to 0 (moneromooo-monero)
- fix integer overflow in n_bulletproof_amounts
- check input scalars are in range
- remove use of environment variable to tweak straus performance
- do not use implementation defined signed shift for signum
Contains two modifications to improve ASIC resistance: shuffle and integer math.
Shuffle makes use of the whole 64-byte cache line instead of 16 bytes only, making Cryptonight 4 times more demanding for memory bandwidth.
Integer math adds 64:32 bit integer division followed by 64 bit integer square root, adding large and unavoidable computational latency to the main loop.
More details and performance numbers: https://github.com/SChernykh/xmr-stak-cpu/blob/master/README.md
63e342b crypto: move null_pkey/null_skey to the cpp file (moneromooo-monero)
0496c7c crypto: do not use boost::value_initialized to init null skey/pkey (moneromooo-monero)
hash: add prehashed version cn_slow_hash_prehashed
slow-hash: let cn_slow_hash take 4th parameter for deciding prehashed or not
slow-hash: add support for prehashed version for the other 3 platforms
When #3303 was merged, a cyclic dependency chain was generated:
libdevice <- libcncrypto <- libringct <- libdevice
This was because libdevice needs access to a set of basic crypto operations
implemented in libringct such as scalarmultBase(), while libringct also needs
access to abstracted crypto operations implemented in libdevice such as
ecdhEncode(). To untangle this cyclic dependency chain, this patch splits libringct
into libringct_basic and libringct, where the basic crypto ops previously in
libringct are moved into libringct_basic. The cyclic dependency is now resolved
thanks to this separation:
libcncrypto <- libringct_basic <- libdevice <- libcryptonote_basic <- libringct
This eliminates the need for crypto_device.cpp and rctOps_device.cpp.
Also, many abstracted interfaces of hw::device such as encrypt_payment_id() and
get_subaddress_secret_key() were previously implemented in libcryptonote_basic
(cryptonote_format_utils.cpp) and were then called from hw::core::device_default,
which is odd because libdevice is supposed to be independent of libcryptonote_basic.
Therefore, those functions were moved to device_default.cpp.
The basic approach it to delegate all sensitive data (master key, secret
ephemeral key, key derivation, ....) and related operations to the device.
As device has low memory, it does not keep itself the values
(except for view/spend keys) but once computed there are encrypted (with AES
are equivalent) and return back to monero-wallet-cli. When they need to be
manipulated by the device, they are decrypted on receive.
Moreover, using the client for storing the value in encrypted form limits
the modification in the client code. Those values are transfered from one
C-structure to another one as previously.
The code modification has been done with the wishes to be open to any
other hardware wallet. To achieve that a C++ class hw::Device has been
introduced. Two initial implementations are provided: the "default", which
remaps all calls to initial Monero code, and the "Ledger", which delegates
all calls to Ledger device.
e4646379 keccak: fix mdlen bounds sanity checking (moneromooo-monero)
2e3e90ac pass large parameters by const ref, not value (moneromooo-monero)
61defd89 blockchain: sanity check number of precomputed hash of hash blocks (moneromooo-monero)
9af6b2d1 ringct: fix infinite loop in unused h2b function (moneromooo-monero)
8cea8d0c simplewallet: double check a new multisig wallet is multisig (moneromooo-monero)
9b98a6ac threadpool: catch exceptions in dtor, to avoid terminate (moneromooo-monero)
24803ed9 blockchain_export: fix buffer overflow in exporter (moneromooo-monero)
f3f7da62 perf_timer: rewrite to make it clear there is no division by zero (moneromooo-monero)
c6ea3df0 performance_tests: remove add_arg call stray extra param (moneromooo-monero)
fa6b4566 fuzz_tests: fix an uninitialized var in setup (moneromooo-monero)
03887f11 keccak: fix sanity check bounds test (moneromooo-monero)
ad11db91 blockchain_db: initialize m_open in base class ctor (moneromooo-monero)
bece67f9 miner: restore std::cout precision after modification (moneromooo-monero)
1aabd14c db_lmdb: check hard fork info drop succeeded (moneromooo-monero)
ge_scalarmult_p3
ge_double_scalarmult_precomp_vartime2_p3
ge_double_scalarmult_base_vartime_p3
This makes it possible to reuse the result without having to
convert back to unsigned char[32] and back to ge types.
Partially implements #74.
Securely erases keys from memory after they are no longer needed. Might have a
performance impact, which I haven't measured (perf measurements aren't
generally reliable on laptops).
Thanks to @stoffu for the suggestion to specialize the pod_to_hex/hex_to_pod
functions. Using overloads + SFINAE instead generalizes it so other types can
be marked as scrubbed without adding more boilerplate.
3dffe71b new wipeable_string class to replace std::string passphrases (moneromooo-monero)
7a2a5741 utils: initialize easylogging++ in on_startup (moneromooo-monero)
54950829 use memwipe in a few relevant places (moneromooo-monero)
000666ff add a memwipe function (moneromooo-monero)
