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oxen-core/src/crypto/cn_turtle_hash-arm.inl
Jason Rhinelander 6aa9db9538
Overhaul and fix crypto::{public_key,ec_point,etc.} types 
- Remove implicit `operator bool` from ec_point/public_key/etc. which
  was causing all sorts of implicit conversion mess and bugs.
- Change ec_point/public_key/etc. to use a `std::array<unsigned char,
  32>` (via a base type) rather than a C-array of char that has to be
  reinterpret_cast<>'ed all over the place.
- Add methods to ec_point/public_key/etc. that make it work more like a
  container of bytes (`.data()`, `.size()`, `operator[]`, `begin()`,
  `end()`).
- Make a generic `crypto::null<T>` that is a constexpr all-0 `T`, rather
  than the mishmash `crypto::null_hash`, crypto::null_pkey,
  crypto:#️⃣:null(), and so on.
- Replace three metric tons of `crypto::hash blahblah =
  crypto::null_hash;` with the much simpler `crypto::hash blahblah{};`,
  because there's no need to make a copy of a null hash in all these
  cases.  (Likewise for a few other null_whatevers).
- Remove a whole bunch of `if (blahblah == crypto::null_hash)` and `if
  (blahblah != crypto::null_hash)` with the more concise `if
  (!blahblah)` and `if (blahblah)` (which are fine via the newly
  *explicit* bool conversion operators).
- `crypto::signature` becomes a 64-byte container (as above) but with
  `c()` and `r()` to get the c() and r() data pointers.  (Previously
  `.c` and `.r` were `ec_scalar`s).
- Delete with great prejudice CRYPTO_MAKE_COMPARABLE and
  CRYPTO_MAKE_HASHABLE and all the other utter trash in
  `crypto/generic-ops.h`.
- De-inline functions in very common crypto/*.h files so that they don't
  have to get compiled 300 times.
- Remove the disgusting include-a-C-header-inside-a-C++-namespace
  garbage from some crypto headers trying to be both a C and *different*
  C++ header at once.
- Remove the toxic, disgusting, shameful `operator&` on ec_scalar, etc.
  that replace `&x` with `reinterpret_cast x into an unsigned char*`.
  This was pure toxic waste.
- changed some `<<` outputs to fmt
- Random other small changes encountered while fixing everything that
  cascaded out of the above changes.
2022-10-17 22:20:54 -03:00

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#if defined(__GNUC__)
#define RDATA_ALIGN16 __attribute__ ((aligned(16)))
#define STATIC static
#define INLINE inline
#else
#define RDATA_ALIGN16
#define STATIC static
#define INLINE
#endif
#define U64(x) ((uint64_t *) (x))
STATIC INLINE void xor64(uint64_t *a, const uint64_t b)
{
*a ^= b;
}
#pragma pack(push, 1)
union cn_turtle_hash_state
{
union hash_state hs;
struct
{
uint8_t k[64];
uint8_t init[INIT_SIZE_BYTE];
};
};
#pragma pack(pop)
#if defined(__aarch64__) && defined(__ARM_FEATURE_CRYPTO)
/* ARMv8-A optimized with NEON and AES instructions.
* Copied from the x86-64 AES-NI implementation. It has much the same
* characteristics as x86-64: there's no 64x64=128 multiplier for vectors,
* and moving between vector and regular registers stalls the pipeline.
*/
#include <arm_neon.h>
#define state_index(x,div) (((*((uint64_t *)x) >> 4) & (TOTALBLOCKS /(div) - 1)) << 4)
#define __mul() __asm__("mul %0, %1, %2\n\t" : "=r"(lo) : "r"(c[0]), "r"(b[0]) ); \
__asm__("umulh %0, %1, %2\n\t" : "=r"(hi) : "r"(c[0]), "r"(b[0]) );
#define pre_aes() \
j = state_index(a,lightFlag); \
_c = vld1q_u8(&hp_state[j]); \
_a = vld1q_u8((const uint8_t *)a); \
#define post_aes() \
VARIANT2_SHUFFLE_ADD_NEON(hp_state, j); \
vst1q_u8((uint8_t *)c, _c); \
vst1q_u8(&hp_state[j], veorq_u8(_b, _c)); \
VARIANT1_1(&hp_state[j]); \
j = state_index(c,lightFlag); \
p = U64(&hp_state[j]); \
b[0] = p[0]; b[1] = p[1]; \
VARIANT2_PORTABLE_INTEGER_MATH(b, c); \
__mul(); \
VARIANT2_2(); \
VARIANT2_SHUFFLE_ADD_NEON(hp_state, j); \
a[0] += hi; a[1] += lo; \
p = U64(&hp_state[j]); \
p[0] = a[0]; p[1] = a[1]; \
a[0] ^= b[0]; a[1] ^= b[1]; \
VARIANT1_2(p + 1); \
_b1 = _b; \
_b = _c; \
/* Note: this was based on a standard 256bit key schedule but
* it's been shortened since Cryptonight doesn't use the full
* key schedule. Don't try to use this for vanilla AES.
*/
static void aes_expand_key(const uint8_t *key, uint8_t *expandedKey) {
static const int rcon[] = {
0x01,0x01,0x01,0x01,
0x0c0f0e0d,0x0c0f0e0d,0x0c0f0e0d,0x0c0f0e0d, // rotate-n-splat
0x1b,0x1b,0x1b,0x1b };
__asm__(
" eor v0.16b,v0.16b,v0.16b\n"
" ld1 {v3.16b},[%0],#16\n"
" ld1 {v1.4s,v2.4s},[%2],#32\n"
" ld1 {v4.16b},[%0]\n"
" mov w2,#5\n"
" st1 {v3.4s},[%1],#16\n"
"\n"
"1:\n"
" tbl v6.16b,{v4.16b},v2.16b\n"
" ext v5.16b,v0.16b,v3.16b,#12\n"
" st1 {v4.4s},[%1],#16\n"
" aese v6.16b,v0.16b\n"
" subs w2,w2,#1\n"
"\n"
" eor v3.16b,v3.16b,v5.16b\n"
" ext v5.16b,v0.16b,v5.16b,#12\n"
" eor v3.16b,v3.16b,v5.16b\n"
" ext v5.16b,v0.16b,v5.16b,#12\n"
" eor v6.16b,v6.16b,v1.16b\n"
" eor v3.16b,v3.16b,v5.16b\n"
" shl v1.16b,v1.16b,#1\n"
" eor v3.16b,v3.16b,v6.16b\n"
" st1 {v3.4s},[%1],#16\n"
" b.eq 2f\n"
"\n"
" dup v6.4s,v3.s[3] // just splat\n"
" ext v5.16b,v0.16b,v4.16b,#12\n"
" aese v6.16b,v0.16b\n"
"\n"
" eor v4.16b,v4.16b,v5.16b\n"
" ext v5.16b,v0.16b,v5.16b,#12\n"
" eor v4.16b,v4.16b,v5.16b\n"
" ext v5.16b,v0.16b,v5.16b,#12\n"
" eor v4.16b,v4.16b,v5.16b\n"
"\n"
" eor v4.16b,v4.16b,v6.16b\n"
" b 1b\n"
"\n"
"2:\n" : : "r"(key), "r"(expandedKey), "r"(rcon));
}
/* An ordinary AES round is a sequence of SubBytes, ShiftRows, MixColumns, AddRoundKey. There
* is also an InitialRound which consists solely of AddRoundKey. The ARM instructions slice
* this sequence differently; the aese instruction performs AddRoundKey, SubBytes, ShiftRows.
* The aesmc instruction does the MixColumns. Since the aese instruction moves the AddRoundKey
* up front, and Cryptonight's hash skips the InitialRound step, we have to kludge it here by
* feeding in a vector of zeros for our first step. Also we have to do our own Xor explicitly
* at the last step, to provide the AddRoundKey that the ARM instructions omit.
*/
STATIC INLINE void aes_pseudo_round(const uint8_t *in, uint8_t *out, const uint8_t *expandedKey, int nblocks)
{
const uint8x16_t *k = (const uint8x16_t *)expandedKey, zero = {0};
uint8x16_t tmp;
int i;
for (i=0; i<nblocks; i++)
{
uint8x16_t tmp = vld1q_u8(in + i * AES_BLOCK_SIZE);
tmp = vaeseq_u8(tmp, zero);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[0]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[1]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[2]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[3]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[4]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[5]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[6]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[7]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[8]);
tmp = vaesmcq_u8(tmp);
tmp = veorq_u8(tmp, k[9]);
vst1q_u8(out + i * AES_BLOCK_SIZE, tmp);
}
}
STATIC INLINE void aes_pseudo_round_xor(const uint8_t *in, uint8_t *out, const uint8_t *expandedKey, const uint8_t *xor, int nblocks)
{
const uint8x16_t *k = (const uint8x16_t *)expandedKey;
const uint8x16_t *x = (const uint8x16_t *)xor;
uint8x16_t tmp;
int i;
for (i=0; i<nblocks; i++)
{
uint8x16_t tmp = vld1q_u8(in + i * AES_BLOCK_SIZE);
tmp = vaeseq_u8(tmp, x[i]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[0]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[1]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[2]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[3]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[4]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[5]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[6]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[7]);
tmp = vaesmcq_u8(tmp);
tmp = vaeseq_u8(tmp, k[8]);
tmp = vaesmcq_u8(tmp);
tmp = veorq_u8(tmp, k[9]);
vst1q_u8(out + i * AES_BLOCK_SIZE, tmp);
}
}
#ifdef FORCE_USE_HEAP
STATIC INLINE void* aligned_malloc(size_t size, size_t align)
{
void *result;
#ifdef _MSC_VER
result = _aligned_malloc(size, align);
#else
if (posix_memalign(&result, align, size)) result = NULL;
#endif
return result;
}
STATIC INLINE void aligned_free(void *ptr)
{
#ifdef _MSC_VER
_aligned_free(ptr);
#else
free(ptr);
#endif
}
#endif /* FORCE_USE_HEAP */
void cn_turtle_hash(const void *data, size_t length, unsigned char *hash, int light, int variant, int prehashed, uint32_t scratchpad, uint32_t iterations)
{
uint32_t TOTALBLOCKS = (CN_TURTLE_PAGE_SIZE / AES_BLOCK_SIZE);
uint32_t init_rounds = (scratchpad / INIT_SIZE_BYTE);
uint32_t aes_rounds = (iterations / 2);
size_t lightFlag = (light ? 2: 1);
RDATA_ALIGN16 uint8_t expandedKey[AES_EXPANDED_KEY_SIZE];
#ifndef FORCE_USE_HEAP
RDATA_ALIGN16 uint8_t hp_state[CN_TURTLE_PAGE_SIZE];
#else
#warning "ACTIVATING FORCE_USE_HEAP IN aarch64 + crypto in slow-hash.c"
uint8_t *hp_state = (uint8_t *)aligned_malloc(CN_TURTLE_PAGE_SIZE,16);
#endif
uint8_t text[INIT_SIZE_BYTE];
RDATA_ALIGN16 uint64_t a[2];
RDATA_ALIGN16 uint64_t b[4];
RDATA_ALIGN16 uint64_t c[2];
union cn_turtle_hash_state state;
uint8x16_t _a, _b, _b1, _c, zero = {0};
uint64_t hi, lo;
size_t i, j;
uint64_t *p = NULL;
static void (*const extra_hashes[4])(const void *, size_t, unsigned char *) =
{
hash_extra_blake, hash_extra_groestl, hash_extra_jh, hash_extra_skein
};
/* CryptoNight Step 1: Use Keccak1600 to initialize the 'state' (and 'text') buffers from the data. */
if (prehashed) {
memcpy(&state.hs, data, length);
} else {
hash_process(&state.hs, data, length);
}
memcpy(text, state.init, INIT_SIZE_BYTE);
VARIANT1_INIT64();
VARIANT2_INIT64();
/* CryptoNight Step 2: Iteratively encrypt the results from Keccak to fill
* the 2MB large random access buffer.
*/
aes_expand_key(state.hs.b, expandedKey);
for(i = 0; i < init_rounds; i++)
{
aes_pseudo_round(text, text, expandedKey, INIT_SIZE_BLK);
memcpy(&hp_state[i * INIT_SIZE_BYTE], text, INIT_SIZE_BYTE);
}
U64(a)[0] = U64(&state.k[0])[0] ^ U64(&state.k[32])[0];
U64(a)[1] = U64(&state.k[0])[1] ^ U64(&state.k[32])[1];
U64(b)[0] = U64(&state.k[16])[0] ^ U64(&state.k[48])[0];
U64(b)[1] = U64(&state.k[16])[1] ^ U64(&state.k[48])[1];
/* CryptoNight Step 3: Bounce randomly 1,048,576 times (1<<20) through the mixing buffer,
* using 524,288 iterations of the following mixing function. Each execution
* performs two reads and writes from the mixing buffer.
*/
_b = vld1q_u8((const uint8_t *)b);
_b1 = vld1q_u8(((const uint8_t *)b) + AES_BLOCK_SIZE);
for(i = 0; i < aes_rounds; i++)
{
pre_aes();
_c = vaeseq_u8(_c, zero);
_c = vaesmcq_u8(_c);
_c = veorq_u8(_c, _a);
post_aes();
}
/* CryptoNight Step 4: Sequentially pass through the mixing buffer and use 10 rounds
* of AES encryption to mix the random data back into the 'text' buffer. 'text'
* was originally created with the output of Keccak1600. */
memcpy(text, state.init, INIT_SIZE_BYTE);
aes_expand_key(&state.hs.b[32], expandedKey);
for(i = 0; i < init_rounds; i++)
{
// add the xor to the pseudo round
aes_pseudo_round_xor(text, text, expandedKey, &hp_state[i * INIT_SIZE_BYTE], INIT_SIZE_BLK);
}
/* CryptoNight Step 5: Apply Keccak to the state again, and then
* use the resulting data to select which of four finalizer
* hash functions to apply to the data (Blake, Groestl, JH, or Skein).
* Use this hash to squeeze the state array down
* to the final 256 bit hash output.
*/
memcpy(state.init, text, INIT_SIZE_BYTE);
hash_permutation(&state.hs);
extra_hashes[state.hs.b[0] & 3](&state, 200, hash);
#ifdef FORCE_USE_HEAP
aligned_free(hp_state);
#endif
}
#else /* aarch64 && crypto */
// ND: Some minor optimizations for ARMv7 (raspberrry pi 2), effect seems to be ~40-50% faster.
// Needs more work.
#ifdef NO_OPTIMIZED_MULTIPLY_ON_ARM
/* The asm corresponds to this C code */
#define SHORT uint32_t
#define LONG uint64_t
void mul(const uint8_t *ca, const uint8_t *cb, uint8_t *cres) {
const SHORT *aa = (SHORT *)ca;
const SHORT *bb = (SHORT *)cb;
SHORT *res = (SHORT *)cres;
union {
SHORT tmp[8];
LONG ltmp[4];
} t;
LONG A = aa[1];
LONG a = aa[0];
LONG B = bb[1];
LONG b = bb[0];
// Aa * Bb = ab + aB_ + Ab_ + AB__
t.ltmp[0] = a * b;
t.ltmp[1] = a * B;
t.ltmp[2] = A * b;
t.ltmp[3] = A * B;
res[2] = t.tmp[0];
t.ltmp[1] += t.tmp[1];
t.ltmp[1] += t.tmp[4];
t.ltmp[3] += t.tmp[3];
t.ltmp[3] += t.tmp[5];
res[3] = t.tmp[2];
res[0] = t.tmp[6];
res[1] = t.tmp[7];
}
#else // !NO_OPTIMIZED_MULTIPLY_ON_ARM
#ifdef __aarch64__ /* ARM64, no crypto */
#define mul(a, b, c) cn_mul128((const uint64_t *)a, (const uint64_t *)b, (uint64_t *)c)
STATIC void cn_mul128(const uint64_t *a, const uint64_t *b, uint64_t *r)
{
uint64_t lo, hi;
__asm__("mul %0, %1, %2\n\t" : "=r"(lo) : "r"(a[0]), "r"(b[0]) );
__asm__("umulh %0, %1, %2\n\t" : "=r"(hi) : "r"(a[0]), "r"(b[0]) );
r[0] = hi;
r[1] = lo;
}
#else /* ARM32 */
#define mul(a, b, c) cn_mul128((const uint32_t *)a, (const uint32_t *)b, (uint32_t *)c)
STATIC void cn_mul128(const uint32_t *aa, const uint32_t *bb, uint32_t *r)
{
uint32_t t0, t1, t2=0, t3=0;
__asm__ __volatile__(
"umull %[t0], %[t1], %[a], %[b]\n\t"
"str %[t0], %[ll]\n\t"
// accumulating with 0 can never overflow/carry
"eor %[t0], %[t0]\n\t"
"umlal %[t1], %[t0], %[a], %[B]\n\t"
"umlal %[t1], %[t2], %[A], %[b]\n\t"
"str %[t1], %[lh]\n\t"
"umlal %[t0], %[t3], %[A], %[B]\n\t"
// final add may have a carry
"adds %[t0], %[t0], %[t2]\n\t"
"adc %[t1], %[t3], #0\n\t"
"str %[t0], %[hl]\n\t"
"str %[t1], %[hh]\n\t"
: [t0]"=&r"(t0), [t1]"=&r"(t1), [t2]"+r"(t2), [t3]"+r"(t3), [hl]"=m"(r[0]), [hh]"=m"(r[1]), [ll]"=m"(r[2]), [lh]"=m"(r[3])
: [A]"r"(aa[1]), [a]"r"(aa[0]), [B]"r"(bb[1]), [b]"r"(bb[0])
: "cc");
}
#endif /* !aarch64 */
#endif // NO_OPTIMIZED_MULTIPLY_ON_ARM
STATIC INLINE void copy_block(uint8_t* dst, const uint8_t* src)
{
memcpy(dst, src, AES_BLOCK_SIZE);
}
STATIC INLINE void sum_half_blocks(uint8_t* a, const uint8_t* b)
{
uint64_t a0, a1, b0, b1;
a0 = U64(a)[0];
a1 = U64(a)[1];
b0 = U64(b)[0];
b1 = U64(b)[1];
a0 += b0;
a1 += b1;
U64(a)[0] = a0;
U64(a)[1] = a1;
}
STATIC INLINE void swap_blocks(uint8_t *a, uint8_t *b)
{
uint64_t t[2];
U64(t)[0] = U64(a)[0];
U64(t)[1] = U64(a)[1];
U64(a)[0] = U64(b)[0];
U64(a)[1] = U64(b)[1];
U64(b)[0] = U64(t)[0];
U64(b)[1] = U64(t)[1];
}
STATIC INLINE void xor_blocks(uint8_t* a, const uint8_t* b)
{
U64(a)[0] ^= U64(b)[0];
U64(a)[1] ^= U64(b)[1];
}
void cn_turtle_hash(const void *data, size_t length, unsigned char *hash, int light, int variant, int prehashed, uint32_t scratchpad, uint32_t iterations)
{
fprintf(stderr, "%s:%d OMG", __FILE__, __LINE__);
uint32_t init_rounds = (scratchpad / INIT_SIZE_BYTE);
uint32_t aes_rounds = (iterations / 2);
size_t lightFlag = (light ? 2: 1);
uint8_t text[INIT_SIZE_BYTE];
uint8_t a[AES_BLOCK_SIZE];
uint8_t b[AES_BLOCK_SIZE * 2];
uint8_t c[AES_BLOCK_SIZE];
uint8_t c1[AES_BLOCK_SIZE];
uint8_t d[AES_BLOCK_SIZE];
uint8_t aes_key[AES_KEY_SIZE];
RDATA_ALIGN16 uint8_t expandedKey[256];
union cn_turtle_hash_state state;
size_t i, j;
uint8_t *p = NULL;
static void (*const extra_hashes[4])(const void *, size_t, unsigned char *) =
{
hash_extra_blake, hash_extra_groestl, hash_extra_jh, hash_extra_skein
};
#ifndef FORCE_USE_HEAP
uint8_t long_state[CN_TURTLE_PAGE_SIZE];
#else
#warning "ACTIVATING FORCE_USE_HEAP IN aarch64 && !crypto in slow-hash.c"
uint8_t *long_state = (uint8_t *)malloc(CN_TURTLE_PAGE_SIZE);
#endif
if (prehashed) {
memcpy(&state.hs, data, length);
} else {
hash_process(&state.hs, data, length);
}
memcpy(text, state.init, INIT_SIZE_BYTE);
VARIANT1_INIT64();
VARIANT2_INIT64();
oaes_expand_key_256(state.hs.b, expandedKey);
for(i = 0; i < init_rounds; i++)
{
for(j = 0; j < INIT_SIZE_BLK; j++)
aesb_pseudo_round(&text[AES_BLOCK_SIZE * j], &text[AES_BLOCK_SIZE * j], expandedKey);
memcpy(&long_state[i * INIT_SIZE_BYTE], text, INIT_SIZE_BYTE);
}
U64(a)[0] = U64(&state.k[0])[0] ^ U64(&state.k[32])[0];
U64(a)[1] = U64(&state.k[0])[1] ^ U64(&state.k[32])[1];
U64(b)[0] = U64(&state.k[16])[0] ^ U64(&state.k[48])[0];
U64(b)[1] = U64(&state.k[16])[1] ^ U64(&state.k[48])[1];
for(i = 0; i < aes_rounds; i++)
{
#define MASK(div) ((uint32_t)(((CN_TURTLE_PAGE_SIZE / AES_BLOCK_SIZE) / (div) - 1) << 4))
#define state_index(x,div) ((*(uint32_t *) x) & MASK(div))
// Iteration 1
j = state_index(a,lightFlag);
p = &long_state[j];
aesb_single_round(p, p, a);
copy_block(c1, p);
VARIANT2_PORTABLE_SHUFFLE_ADD(long_state, j);
xor_blocks(p, b);
VARIANT1_1(p);
// Iteration 2
j = state_index(c1,lightFlag);
p = &long_state[j];
copy_block(c, p);
VARIANT2_PORTABLE_INTEGER_MATH(c, c1);
mul(c1, c, d);
VARIANT2_2_PORTABLE();
VARIANT2_PORTABLE_SHUFFLE_ADD(long_state, j);
sum_half_blocks(a, d);
swap_blocks(a, c);
xor_blocks(a, c);
VARIANT1_2(U64(c) + 1);
copy_block(p, c);
if (variant >= 2) {
copy_block(b + AES_BLOCK_SIZE, b);
}
copy_block(b, c1);
}
memcpy(text, state.init, INIT_SIZE_BYTE);
oaes_expand_key_256(&state.hs.b[32], expandedKey);
for(i = 0; i < init_rounds; i++)
{
for(j = 0; j < INIT_SIZE_BLK; j++)
{
xor_blocks(&text[j * AES_BLOCK_SIZE], &long_state[i * INIT_SIZE_BYTE + j * AES_BLOCK_SIZE]);
aesb_pseudo_round(&text[AES_BLOCK_SIZE * j], &text[AES_BLOCK_SIZE * j], expandedKey);
}
}
memcpy(state.init, text, INIT_SIZE_BYTE);
hash_permutation(&state.hs);
extra_hashes[state.hs.b[0] & 3](&state, 200, hash);
#ifdef FORCE_USE_HEAP
free(long_state);
#endif
}
#endif /* !aarch64 || !crypto */
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