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Monero Cryptonight variants, and add one for v7

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This is the first variant of many, with the intent to improve
Monero's resistance to ASICs and encourage mining decentralization.
pull/95/head
moneromooo-monero 6 years ago
parent 0d150aca5c
commit 608fd6f14a
No known key found for this signature in database
GPG Key ID: 686F07454D6CEFC3
9 changed files with 71 additions and 17 deletions
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4
src/crypto/chacha.h
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@ -69,10 +69,10 @@ namespace crypto {
chacha20(data, length, key.data(), reinterpret_cast<const uint8_t*>(&iv), cipher);
}
inline void generate_chacha_key(const void *data, size_t size, chacha_key& key, bool prehashed=false) {
inline void generate_chacha_key(const void *data, size_t size, chacha_key& key, int cn_variant = 0, bool prehashed=false) {
static_assert(sizeof(chacha_key) <= sizeof(hash), "Size of hash must be at least that of chacha_key");
tools::scrubbed_arr<char, HASH_SIZE> pwd_hash;
crypto::cn_slow_hash_pre(data, size, pwd_hash.data(), prehashed);
crypto::cn_slow_hash_pre(data, size, pwd_hash.data(), cn_variant, prehashed);
memcpy(&key, pwd_hash.data(), sizeof(key));
}

4
src/crypto/hash-ops.h
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@ -79,8 +79,8 @@ enum {
};
void cn_fast_hash(const void *data, size_t length, char *hash);
void cn_slow_hash(const void *data, size_t length, char *hash);
void cn_slow_hash_pre(const void *data, size_t length, char *hash, bool pre);
void cn_slow_hash(const void *data, size_t length, char *hash, int variant);
void cn_slow_hash_pre(const void *data, size_t length, char *hash, int variant, bool pre);
void hash_extra_blake(const void *data, size_t length, char *hash);
void hash_extra_groestl(const void *data, size_t length, char *hash);

4
src/crypto/hash.h
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@ -71,8 +71,8 @@ namespace crypto {
return h;
}
inline void cn_slow_hash(const void *data, std::size_t length, hash &hash) {
cn_slow_hash(data, length, reinterpret_cast<char *>(&hash));
inline void cn_slow_hash(const void *data, std::size_t length, hash &hash, int variant = 0) {
cn_slow_hash(data, length, reinterpret_cast<char *>(&hash), variant);
}
inline void tree_hash(const hash *hashes, std::size_t count, hash &root_hash) {

53
src/crypto/slow-hash.c
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@ -32,6 +32,8 @@
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include "common/int-util.h"
#include "hash-ops.h"
@ -47,6 +49,29 @@
extern int aesb_single_round(const uint8_t *in, uint8_t*out, const uint8_t *expandedKey);
extern int aesb_pseudo_round(const uint8_t *in, uint8_t *out, const uint8_t *expandedKey);
#define VARIANT1_1(p) \
do if (variant > 0) \
{ \
uint8_t tmp = ((const uint8_t*)p)[11]; \
uint8_t tmp1 = (tmp>>4)&1, tmp2 = (tmp>>5)&1, tmp3 = tmp1^tmp2; \
uint8_t tmp0 = (((const uint8_t*)p)[11] & 1) ? tmp3 : ((((tmp2<<1)|tmp1) + 1)&3); \
((uint8_t*)p)[11] = (((const uint8_t*)p)[11] & 1) ? ((tmp & 0xef) | (tmp0<<4)):((tmp & 0xcf) | (tmp0<<4)); \
} while(0)
#define VARIANT1_2(p) \
do if (variant > 0) \
{ \
((uint32_t*)p)[2] ^= nonce; \
} while(0)
#define VARIANT1_INIT() \
if (variant > 0 && length < 43) \
{ \
fprintf(stderr, "Cryptonight variants need at least 43 bytes of data"); \
_exit(1); \
} \
const uint32_t nonce = variant > 0 ? *(const uint32_t*)(((const uint8_t*)data)+39) : 0
#if !defined NO_AES && (defined(__x86_64__) || (defined(_MSC_VER) && defined(_WIN64)))
// Optimised code below, uses x86-specific intrinsics, SSE2, AES-NI
// Fall back to more portable code is down at the bottom
@ -125,6 +150,7 @@ extern int aesb_pseudo_round(const uint8_t *in, uint8_t *out, const uint8_t *exp
_mm_store_si128(R128(c), _c); \
_b = _mm_xor_si128(_b, _c); \
_mm_store_si128(R128(&hp_state[j]), _b); \
VARIANT1_1(&hp_state[j]); \
j = state_index(c); \
p = U64(&hp_state[j]); \
b[0] = p[0]; b[1] = p[1]; \
@ -134,6 +160,7 @@ extern int aesb_pseudo_round(const uint8_t *in, uint8_t *out, const uint8_t *exp
p[0] = a[0]; p[1] = a[1]; \
a[0] ^= b[0]; a[1] ^= b[1]; \
_b = _c; \
VARIANT1_2(&hp_state[j]); \
#if defined(_MSC_VER)
#define THREADV __declspec(thread)
@ -515,11 +542,11 @@ void slow_hash_free_state(void)
* @param length the length in bytes of the data
* @param hash a pointer to a buffer in which the final 256 bit hash will be stored
*/
void cn_slow_hash(const void *data, size_t length, char *hash) {
cn_slow_hash_pre(data,length,hash,false);
void cn_slow_hash(const void *data, size_t length, char *hash, int variant) {
cn_slow_hash_pre(data,length,hash,variant,false);
}
void cn_slow_hash_pre(const void *data, size_t length, char *hash, bool prehashed)
void cn_slow_hash_pre(const void *data, size_t length, char *hash, int variant, bool prehashed)
{
RDATA_ALIGN16 uint8_t expandedKey[240]; /* These buffers are aligned to use later with SSE functions */
@ -541,6 +568,8 @@ void cn_slow_hash_pre(const void *data, size_t length, char *hash, bool prehashe
hash_extra_blake, hash_extra_groestl, hash_extra_jh, hash_extra_skein
};
VARIANT1_INIT();
// this isn't supposed to happen, but guard against it for now.
if(hp_state == NULL)
slow_hash_allocate_state();
@ -712,6 +741,7 @@ union cn_slow_hash_state
vst1q_u8((uint8_t *)c, _c); \
_b = veorq_u8(_b, _c); \
vst1q_u8(&hp_state[j], _b); \
VARIANT1_1(&hp_state[j]); \
j = state_index(c); \
p = U64(&hp_state[j]); \
b[0] = p[0]; b[1] = p[1]; \
@ -720,6 +750,7 @@ union cn_slow_hash_state
p = U64(&hp_state[j]); \
p[0] = a[0]; p[1] = a[1]; \
a[0] ^= b[0]; a[1] ^= b[1]; \
VARIANT1_2(p); \
_b = _c; \
@ -851,7 +882,7 @@ STATIC INLINE void aes_pseudo_round_xor(const uint8_t *in, uint8_t *out, const u
}
}
void cn_slow_hash(const void *data, size_t length, char *hash)
void cn_slow_hash(const void *data, size_t length, char *hash, int variant)
{
RDATA_ALIGN16 uint8_t expandedKey[240];
RDATA_ALIGN16 uint8_t hp_state[MEMORY];
@ -872,6 +903,8 @@ void cn_slow_hash(const void *data, size_t length, char *hash)
hash_extra_blake, hash_extra_groestl, hash_extra_jh, hash_extra_skein
};
VARIANT1_INIT();
/* CryptoNight Step 1: Use Keccak1600 to initialize the 'state' (and 'text') buffers from the data. */
hash_process(&state.hs, data, length);
@ -1045,7 +1078,7 @@ STATIC INLINE void xor_blocks(uint8_t* a, const uint8_t* b)
U64(a)[1] ^= U64(b)[1];
}
void cn_slow_hash(const void *data, size_t length, char *hash)
void cn_slow_hash(const void *data, size_t length, char *hash, int variant)
{
uint8_t text[INIT_SIZE_BYTE];
uint8_t a[AES_BLOCK_SIZE];
@ -1064,6 +1097,8 @@ void cn_slow_hash(const void *data, size_t length, char *hash)
hash_extra_blake, hash_extra_groestl, hash_extra_jh, hash_extra_skein
};
VARIANT1_INIT();
#ifndef FORCE_USE_HEAP
uint8_t long_state[MEMORY];
#else
@ -1103,6 +1138,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash)
xor_blocks(b, p);
swap_blocks(b, p);
swap_blocks(a, b);
VARIANT1_1(p);
// Iteration 2
p = &long_state[state_index(a)];
@ -1112,6 +1148,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash)
swap_blocks(b, p);
xor_blocks(b, p);
swap_blocks(a, b);
VARIANT1_2(p);
}
memcpy(text, state.init, INIT_SIZE_BYTE);
@ -1216,7 +1253,7 @@ union cn_slow_hash_state {
};
#pragma pack(pop)
void cn_slow_hash(const void *data, size_t length, char *hash) {
void cn_slow_hash(const void *data, size_t length, char *hash, int variant) {
uint8_t long_state[MEMORY];
union cn_slow_hash_state state;
uint8_t text[INIT_SIZE_BYTE];
@ -1228,6 +1265,8 @@ void cn_slow_hash(const void *data, size_t length, char *hash) {
uint8_t aes_key[AES_KEY_SIZE];
oaes_ctx *aes_ctx;
VARIANT1_INIT();
hash_process(&state.hs, data, length);
memcpy(text, state.init, INIT_SIZE_BYTE);
memcpy(aes_key, state.hs.b, AES_KEY_SIZE);
@ -1260,6 +1299,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash) {
copy_block(&long_state[j * AES_BLOCK_SIZE], c);
assert(j == e2i(a, MEMORY / AES_BLOCK_SIZE));
swap_blocks(a, b);
VARIANT1_1(&long_state[j * AES_BLOCK_SIZE]);
/* Iteration 2 */
j = e2i(a, MEMORY / AES_BLOCK_SIZE);
copy_block(c, &long_state[j * AES_BLOCK_SIZE]);
@ -1270,6 +1310,7 @@ void cn_slow_hash(const void *data, size_t length, char *hash) {
copy_block(&long_state[j * AES_BLOCK_SIZE], c);
assert(j == e2i(a, MEMORY / AES_BLOCK_SIZE));
swap_blocks(a, b);
VARIANT1_2(&long_state[j * AES_BLOCK_SIZE]);
}
memcpy(text, state.init, INIT_SIZE_BYTE);

3
src/cryptonote_basic/cryptonote_format_utils.cpp
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@ -1022,7 +1022,8 @@ namespace cryptonote
return true;
}
blobdata bd = get_block_hashing_blob(b);
crypto::cn_slow_hash(bd.data(), bd.size(), res);
const int cn_variant = b.major_version >= 7 ? b.major_version - 6 : 0;
crypto::cn_slow_hash(bd.data(), bd.size(), res, cn_variant);
return true;
}
//---------------------------------------------------------------

2
src/device/device_ledger.cpp
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@ -511,7 +511,7 @@ namespace hw {
char prekey[200];
memmove(prekey, &this->buffer_recv[0], 200);
crypto::generate_chacha_key(&prekey[0], sizeof(prekey), key, true);
crypto::generate_chacha_key(&prekey[0], sizeof(prekey), key, 0, true);
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("generate_chacha_key", "key", (char*)key_x.data(), (char*)key.data());

2
tests/hash/CMakeLists.txt
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@ -43,7 +43,7 @@ set_property(TARGET hash-tests
PROPERTY
FOLDER "tests")
foreach (hash IN ITEMS fast slow tree extra-blake extra-groestl extra-jh extra-skein)
foreach (hash IN ITEMS fast slow slow-1 tree extra-blake extra-groestl extra-jh extra-skein)
add_test(
NAME "hash-${hash}"
COMMAND hash-tests "${hash}" "${CMAKE_CURRENT_SOURCE_DIR}/tests-${hash}.txt")

11
tests/hash/main.cpp
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@ -51,6 +51,12 @@ extern "C" {
}
tree_hash((const char (*)[32]) data, length >> 5, hash);
}
static void cn_slow_hash_0(const void *data, size_t length, char *hash) {
return cn_slow_hash(data, length, hash, 0);
}
static void cn_slow_hash_1(const void *data, size_t length, char *hash) {
return cn_slow_hash(data, length, hash, 1);
}
}
POP_WARNINGS
@ -58,9 +64,10 @@ extern "C" typedef void hash_f(const void *, size_t, char *);
struct hash_func {
const string name;
hash_f &f;
} hashes[] = {{"fast", cn_fast_hash}, {"slow", cn_slow_hash}, {"tree", hash_tree},
} hashes[] = {{"fast", cn_fast_hash}, {"slow", cn_slow_hash_0}, {"tree", hash_tree},
{"extra-blake", hash_extra_blake}, {"extra-groestl", hash_extra_groestl},
{"extra-jh", hash_extra_jh}, {"extra-skein", hash_extra_skein}};
{"extra-jh", hash_extra_jh}, {"extra-skein", hash_extra_skein},
{"slow-1", cn_slow_hash_1}};
int main(int argc, char *argv[]) {
hash_f *f;

5
tests/hash/tests-slow-1.txt
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@ -0,0 +1,5 @@
b46aab7facce3eb4b4679d1d526f2d500d43736988b7881853c4c0c4af04ac0e 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000
f0f0ab8a50a809ccd82c76996e494b20a1e01e90ed4814a27db2558511559091 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
13310922971e1112b382357aeaa8b0bf0cd941dc6f5e398979f3fa77d13749bd 8519e039172b0d70e5ca7b3383d6b3167315a422747b73f019cf9528f0fde341fd0f2a63030ba6450525cf6de31837669af6f1df8131faf50aaab8d3a7405589
0d9f641d14a782748ed5548f72a20c83c4a2cfe606015ad9eda5b36a00947d72 37a636d7dafdf259b7287eddca2f58099e98619d2f99bdb8969d7b14498102cc065201c8be90bd777323f449848b215d2977c92c4c1c2da36ab46b2e389689ed97c18fec08cd3b03235c5e4c62a37ad88c7b67932495a71090e85dd4020a9300
d74a0c9b603aa9f9af0bfec0c36d3d383c14930a0ee2f08dab44536fccda5bee 38274c97c45a172cfc97679870422e3a1ab0784960c60514d816271415c306ee3a3ed1a77e31f6a885c3cb
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