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-rw-r--r--src/crypto/slow-hash.c522
1 files changed, 118 insertions, 404 deletions
diff --git a/src/crypto/slow-hash.c b/src/crypto/slow-hash.c
index cda66af52..c7264bd96 100644
--- a/src/crypto/slow-hash.c
+++ b/src/crypto/slow-hash.c
@@ -11,429 +11,143 @@
#include "hash-ops.h"
#include "oaes_lib.h"
-#include <emmintrin.h>
-
-#if defined(_MSC_VER)
-#include <intrin.h>
-#include <Windows.h>
-#define STATIC
-#define INLINE __inline
-#if !defined(RDATA_ALIGN16)
-#define RDATA_ALIGN16 __declspec(align(16))
-#endif
-#else
-#include <wmmintrin.h>
-#include <sys/mman.h>
-#define STATIC static
-#define INLINE inline
-#if !defined(RDATA_ALIGN16)
-#define RDATA_ALIGN16 __attribute__ ((aligned(16)))
-#endif
-#endif
-
-#if defined(__INTEL_COMPILER)
-#define ASM __asm__
-#elif !defined(_MSC_VER)
-#define ASM __asm__
-#else
-#define ASM __asm
-#endif
+static void (*const extra_hashes[4])(const void *, size_t, char *) = {
+ hash_extra_blake, hash_extra_groestl, hash_extra_jh, hash_extra_skein
+};
-#define MEMORY (1 << 21) // 2MB scratchpad
+#define MEMORY (1 << 21) /* 2 MiB */
#define ITER (1 << 20)
#define AES_BLOCK_SIZE 16
-#define AES_KEY_SIZE 32
+#define AES_KEY_SIZE 32 /*16*/
#define INIT_SIZE_BLK 8
#define INIT_SIZE_BYTE (INIT_SIZE_BLK * AES_BLOCK_SIZE)
-#define TOTALBLOCKS (MEMORY / AES_BLOCK_SIZE)
-
-#define U64(x) ((uint64_t *) (x))
-#define R128(x) ((__m128i *) (x))
-#define SWAP(a, b) (((a) -= (b)), ((b) += (a)), ((a) = (b) - (a)))
-
-#define state_index(x) (((*((uint64_t *)x) >> 4) & (TOTALBLOCKS - 1)) << 4)
-#if defined(_MSC_VER)
-#define __mul() lo = _umul128(c[0], b[0], &hi);
-#else
-#define __mul() ASM("mulq %3\n\t" : "=d"(hi), "=a"(lo) : "%a" (c[0]), "rm" (b[0]) : "cc");
-#endif
-#define pre_aes() \
- j = state_index(a); \
- _c = _mm_load_si128(R128(&hp_state[j])); \
- _a = _mm_load_si128(R128(a)); \
-
-// dga's optimized scratchpad twiddling
-#define post_aes() \
- _mm_store_si128(R128(c), _c); \
- _b = _mm_xor_si128(_b, _c); \
- _mm_store_si128(R128(&hp_state[j]), _b); \
- j = state_index(c); \
- p = U64(&hp_state[j]); \
- b[0] = p[0]; b[1] = p[1]; \
- __mul(); \
- 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]; \
- _b = _c; \
-
-#if defined(_MSC_VER)
-#define THREADV __declspec(thread)
-#else
-#define THREADV __thread
-#endif
+static size_t e2i(const uint8_t* a, size_t count) { return (*((uint64_t*)a) / AES_BLOCK_SIZE) & (count - 1); }
-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);
-
-#pragma pack(push, 1)
-union cn_slow_hash_state
-{
- union hash_state hs;
- struct
- {
- uint8_t k[64];
- uint8_t init[INIT_SIZE_BYTE];
- };
-};
-#pragma pack(pop)
+static void mul(const uint8_t* a, const uint8_t* b, uint8_t* res) {
+ uint64_t a0, b0;
+ uint64_t hi, lo;
-THREADV uint8_t *hp_state = NULL;
-THREADV int hp_allocated = 0;
-
-#if defined(_MSC_VER)
-#define cpuid(info,x) __cpuidex(info,x,0)
-#else
-void cpuid(int CPUInfo[4], int InfoType)
-{
- ASM __volatile__
- (
- "cpuid":
- "=a" (CPUInfo[0]),
- "=b" (CPUInfo[1]),
- "=c" (CPUInfo[2]),
- "=d" (CPUInfo[3]) :
- "a" (InfoType), "c" (0)
- );
+ a0 = SWAP64LE(((uint64_t*)a)[0]);
+ b0 = SWAP64LE(((uint64_t*)b)[0]);
+ lo = mul128(a0, b0, &hi);
+ ((uint64_t*)res)[0] = SWAP64LE(hi);
+ ((uint64_t*)res)[1] = SWAP64LE(lo);
}
-#endif
-STATIC INLINE void xor_blocks(uint8_t *a, const uint8_t *b)
-{
- U64(a)[0] ^= U64(b)[0];
- U64(a)[1] ^= U64(b)[1];
+static void sum_half_blocks(uint8_t* a, const uint8_t* b) {
+ uint64_t a0, a1, b0, b1;
+
+ a0 = SWAP64LE(((uint64_t*)a)[0]);
+ a1 = SWAP64LE(((uint64_t*)a)[1]);
+ b0 = SWAP64LE(((uint64_t*)b)[0]);
+ b1 = SWAP64LE(((uint64_t*)b)[1]);
+ a0 += b0;
+ a1 += b1;
+ ((uint64_t*)a)[0] = SWAP64LE(a0);
+ ((uint64_t*)a)[1] = SWAP64LE(a1);
}
-STATIC INLINE int check_aes_hw(void)
-{
- int cpuid_results[4];
- static int supported = -1;
-
- if(supported >= 0)
- return supported;
-
- cpuid(cpuid_results,1);
- return supported = cpuid_results[2] & (1 << 25);
+static void copy_block(uint8_t* dst, const uint8_t* src) {
+ memcpy(dst, src, AES_BLOCK_SIZE);
}
-STATIC INLINE void aes_256_assist1(__m128i* t1, __m128i * t2)
-{
- __m128i t4;
- *t2 = _mm_shuffle_epi32(*t2, 0xff);
- t4 = _mm_slli_si128(*t1, 0x04);
- *t1 = _mm_xor_si128(*t1, t4);
- t4 = _mm_slli_si128(t4, 0x04);
- *t1 = _mm_xor_si128(*t1, t4);
- t4 = _mm_slli_si128(t4, 0x04);
- *t1 = _mm_xor_si128(*t1, t4);
- *t1 = _mm_xor_si128(*t1, *t2);
+static void swap_blocks(uint8_t* a, uint8_t* b) {
+ size_t i;
+ uint8_t t;
+ for (i = 0; i < AES_BLOCK_SIZE; i++) {
+ t = a[i];
+ a[i] = b[i];
+ b[i] = t;
+ }
}
-STATIC INLINE void aes_256_assist2(__m128i* t1, __m128i * t3)
-{
- __m128i t2, t4;
- t4 = _mm_aeskeygenassist_si128(*t1, 0x00);
- t2 = _mm_shuffle_epi32(t4, 0xaa);
- t4 = _mm_slli_si128(*t3, 0x04);
- *t3 = _mm_xor_si128(*t3, t4);
- t4 = _mm_slli_si128(t4, 0x04);
- *t3 = _mm_xor_si128(*t3, t4);
- t4 = _mm_slli_si128(t4, 0x04);
- *t3 = _mm_xor_si128(*t3, t4);
- *t3 = _mm_xor_si128(*t3, t2);
+static void xor_blocks(uint8_t* a, const uint8_t* b) {
+ size_t i;
+ for (i = 0; i < AES_BLOCK_SIZE; i++) {
+ a[i] ^= b[i];
+ }
}
-STATIC INLINE void aes_expand_key(const uint8_t *key, uint8_t *expandedKey)
-{
- __m128i *ek = R128(expandedKey);
- __m128i t1, t2, t3;
-
- t1 = _mm_loadu_si128(R128(key));
- t3 = _mm_loadu_si128(R128(key + 16));
-
- ek[0] = t1;
- ek[1] = t3;
-
- t2 = _mm_aeskeygenassist_si128(t3, 0x01);
- aes_256_assist1(&t1, &t2);
- ek[2] = t1;
- aes_256_assist2(&t1, &t3);
- ek[3] = t3;
-
- t2 = _mm_aeskeygenassist_si128(t3, 0x02);
- aes_256_assist1(&t1, &t2);
- ek[4] = t1;
- aes_256_assist2(&t1, &t3);
- ek[5] = t3;
-
- t2 = _mm_aeskeygenassist_si128(t3, 0x04);
- aes_256_assist1(&t1, &t2);
- ek[6] = t1;
- aes_256_assist2(&t1, &t3);
- ek[7] = t3;
-
- t2 = _mm_aeskeygenassist_si128(t3, 0x08);
- aes_256_assist1(&t1, &t2);
- ek[8] = t1;
- aes_256_assist2(&t1, &t3);
- ek[9] = t3;
-
- t2 = _mm_aeskeygenassist_si128(t3, 0x10);
- aes_256_assist1(&t1, &t2);
- ek[10] = t1;
-}
-
-STATIC INLINE void aes_pseudo_round(const uint8_t *in, uint8_t *out,
- const uint8_t *expandedKey, int nblocks)
-{
- __m128i *k = R128(expandedKey);
- __m128i d;
- int i;
-
- for(i = 0; i < nblocks; i++)
- {
- d = _mm_loadu_si128(R128(in + i * AES_BLOCK_SIZE));
- d = _mm_aesenc_si128(d, *R128(&k[0]));
- d = _mm_aesenc_si128(d, *R128(&k[1]));
- d = _mm_aesenc_si128(d, *R128(&k[2]));
- d = _mm_aesenc_si128(d, *R128(&k[3]));
- d = _mm_aesenc_si128(d, *R128(&k[4]));
- d = _mm_aesenc_si128(d, *R128(&k[5]));
- d = _mm_aesenc_si128(d, *R128(&k[6]));
- d = _mm_aesenc_si128(d, *R128(&k[7]));
- d = _mm_aesenc_si128(d, *R128(&k[8]));
- d = _mm_aesenc_si128(d, *R128(&k[9]));
- _mm_storeu_si128((R128(out + i * AES_BLOCK_SIZE)), d);
- }
-}
-
-STATIC INLINE void aes_pseudo_round_xor(const uint8_t *in, uint8_t *out,
- const uint8_t *expandedKey, const uint8_t *xor, int nblocks)
-{
- __m128i *k = R128(expandedKey);
- __m128i *x = R128(xor);
- __m128i d;
- int i;
-
- for(i = 0; i < nblocks; i++)
- {
- d = _mm_loadu_si128(R128(in + i * AES_BLOCK_SIZE));
- d = _mm_xor_si128(d, *R128(x++));
- d = _mm_aesenc_si128(d, *R128(&k[0]));
- d = _mm_aesenc_si128(d, *R128(&k[1]));
- d = _mm_aesenc_si128(d, *R128(&k[2]));
- d = _mm_aesenc_si128(d, *R128(&k[3]));
- d = _mm_aesenc_si128(d, *R128(&k[4]));
- d = _mm_aesenc_si128(d, *R128(&k[5]));
- d = _mm_aesenc_si128(d, *R128(&k[6]));
- d = _mm_aesenc_si128(d, *R128(&k[7]));
- d = _mm_aesenc_si128(d, *R128(&k[8]));
- d = _mm_aesenc_si128(d, *R128(&k[9]));
- _mm_storeu_si128((R128(out + i * AES_BLOCK_SIZE)), d);
- }
-}
-
-#if defined(_MSC_VER)
-BOOL SetLockPagesPrivilege(HANDLE hProcess, BOOL bEnable)
-{
- struct
- {
- DWORD count;
- LUID_AND_ATTRIBUTES privilege[1];
- } info;
-
- HANDLE token;
- if(!OpenProcessToken(hProcess, TOKEN_ADJUST_PRIVILEGES, &token))
- return FALSE;
-
- info.count = 1;
- info.privilege[0].Attributes = bEnable ? SE_PRIVILEGE_ENABLED : 0;
-
- if(!LookupPrivilegeValue(NULL, SE_LOCK_MEMORY_NAME, &(info.privilege[0].Luid)))
- return FALSE;
-
- if(!AdjustTokenPrivileges(token, FALSE, (PTOKEN_PRIVILEGES) &info, 0, NULL, NULL))
- return FALSE;
-
- if (GetLastError() != ERROR_SUCCESS)
- return FALSE;
-
- CloseHandle(token);
-
- return TRUE;
-
-}
-#endif
-
-void slow_hash_allocate_state(void)
-{
- int state = 0;
- if(hp_state != NULL)
- return;
-
-#if defined(_MSC_VER)
- SetLockPagesPrivilege(GetCurrentProcess(), TRUE);
- hp_state = (uint8_t *) VirtualAlloc(hp_state, MEMORY, MEM_LARGE_PAGES |
- MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
-#else
- hp_state = mmap(0, MEMORY, PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB, 0, 0);
- if(hp_state == MAP_FAILED)
- hp_state = NULL;
-#endif
- hp_allocated = 1;
- if(hp_state == NULL)
- {
- hp_allocated = 0;
- hp_state = (uint8_t *) malloc(MEMORY);
- }
-}
-
-void slow_hash_free_state(void)
-{
- if(hp_state == NULL)
- return;
-
- if(!hp_allocated)
- free(hp_state);
- else
- {
-#if defined(_MSC_VER)
- VirtualFree(hp_state, MEMORY, MEM_RELEASE);
-#else
- munmap(hp_state, MEMORY);
-#endif
- }
-
- hp_state = NULL;
- hp_allocated = 0;
-}
-
-void cn_slow_hash(const void *data, size_t length, char *hash)
-{
- RDATA_ALIGN16 uint8_t expandedKey[240];
-
- uint8_t text[INIT_SIZE_BYTE];
- RDATA_ALIGN16 uint64_t a[2];
- RDATA_ALIGN16 uint64_t b[2];
- RDATA_ALIGN16 uint64_t c[2];
- RDATA_ALIGN16 uint8_t aes_key[AES_KEY_SIZE];
- union cn_slow_hash_state state;
- __m128i _a, _b, _c;
- uint64_t hi, lo;
-
- size_t i, j;
- uint64_t *p = NULL;
- oaes_ctx *aes_ctx;
- int useAes = check_aes_hw();
-
- static void (*const extra_hashes[4])(const void *, size_t, char *) =
- {
- hash_extra_blake, hash_extra_groestl, hash_extra_jh, hash_extra_skein
- };
-
- // this isn't supposed to happen, but guard against it for now.
- if(hp_state == NULL)
- slow_hash_allocate_state();
-
- hash_process(&state.hs, data, length);
- memcpy(text, state.init, INIT_SIZE_BYTE);
-
- if(useAes)
- {
- aes_expand_key(state.hs.b, expandedKey);
- for(i = 0; i < MEMORY / INIT_SIZE_BYTE; i++)
- {
- aes_pseudo_round(text, text, expandedKey, INIT_SIZE_BLK);
- memcpy(&hp_state[i * INIT_SIZE_BYTE], text, INIT_SIZE_BYTE);
- }
- }
- else
- {
- aes_ctx = (oaes_ctx *) oaes_alloc();
- oaes_key_import_data(aes_ctx, state.hs.b, AES_KEY_SIZE);
- for(i = 0; i < MEMORY / INIT_SIZE_BYTE; i++)
- {
- for(j = 0; j < INIT_SIZE_BLK; j++)
- aesb_pseudo_round(&text[AES_BLOCK_SIZE * j], &text[AES_BLOCK_SIZE * j], aes_ctx->key->exp_data);
-
- 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];
-
- _b = _mm_load_si128(R128(b));
- // this is ugly but the branching affects the loop somewhat so put it outside.
- if(useAes)
- {
- for(i = 0; i < ITER / 2; i++)
- {
- pre_aes();
- _c = _mm_aesenc_si128(_c, _a);
- // post_aes(), optimized scratchpad twiddling (credits to dga)
- post_aes();
- }
- }
- else
- {
- for(i = 0; i < ITER / 2; i++)
- {
- pre_aes();
- aesb_single_round((uint8_t *) &_c, (uint8_t *) &_c, (uint8_t *) &_a);
- post_aes();
- }
- }
+#pragma pack(push, 1)
+union cn_slow_hash_state {
+ union hash_state hs;
+ struct {
+ uint8_t k[64];
+ uint8_t init[INIT_SIZE_BYTE];
+ };
+};
+#pragma pack(pop)
- memcpy(text, state.init, INIT_SIZE_BYTE);
- if(useAes)
- {
- aes_expand_key(&state.hs.b[32], expandedKey);
- for(i = 0; i < MEMORY / INIT_SIZE_BYTE; i++)
- {
- // add the xor to the pseudo round
- aes_pseudo_round_xor(text, text, expandedKey, &hp_state[i * INIT_SIZE_BYTE], INIT_SIZE_BLK);
- }
+void cn_slow_hash(const void *data, size_t length, char *hash) {
+ uint8_t long_state[MEMORY];
+ union cn_slow_hash_state state;
+ uint8_t text[INIT_SIZE_BYTE];
+ uint8_t a[AES_BLOCK_SIZE];
+ uint8_t b[AES_BLOCK_SIZE];
+ uint8_t c[AES_BLOCK_SIZE];
+ uint8_t d[AES_BLOCK_SIZE];
+ size_t i, j;
+ uint8_t aes_key[AES_KEY_SIZE];
+ OAES_CTX* aes_ctx;
+
+ hash_process(&state.hs, data, length);
+ memcpy(text, state.init, INIT_SIZE_BYTE);
+ memcpy(aes_key, state.hs.b, AES_KEY_SIZE);
+ aes_ctx = oaes_alloc();
+ for (i = 0; i < MEMORY / INIT_SIZE_BYTE; i++) {
+ for (j = 0; j < INIT_SIZE_BLK; j++) {
+ oaes_key_import_data(aes_ctx, aes_key, AES_KEY_SIZE);
+ oaes_pseudo_encrypt_ecb(aes_ctx, &text[AES_BLOCK_SIZE * j]);
+ /*memcpy(aes_key, &text[AES_BLOCK_SIZE * j], AES_KEY_SIZE);*/
+ memcpy(aes_key, state.hs.b, AES_KEY_SIZE);
}
- else
- {
- oaes_key_import_data(aes_ctx, &state.hs.b[32], AES_KEY_SIZE);
- for(i = 0; i < MEMORY / INIT_SIZE_BYTE; i++)
- {
- for(j = 0; j < INIT_SIZE_BLK; j++)
- {
- xor_blocks(&text[j * AES_BLOCK_SIZE], &hp_state[i * INIT_SIZE_BYTE + j * AES_BLOCK_SIZE]);
- aesb_pseudo_round(&text[AES_BLOCK_SIZE * j], &text[AES_BLOCK_SIZE * j], aes_ctx->key->exp_data);
- }
- }
- oaes_free((OAES_CTX **) &aes_ctx);
+ memcpy(&long_state[i * INIT_SIZE_BYTE], text, INIT_SIZE_BYTE);
+ }
+
+ for (i = 0; i < 16; i++) {
+ a[i] = state.k[ i] ^ state.k[32 + i];
+ b[i] = state.k[16 + i] ^ state.k[48 + i];
+ }
+
+ for (i = 0; i < ITER / 2; i++) {
+ /* Dependency chain: address -> read value ------+
+ * written value <-+ hard function (AES or MUL) <+
+ * next address <-+
+ */
+ /* Iteration 1 */
+ j = e2i(a, MEMORY / AES_BLOCK_SIZE);
+ copy_block(c, &long_state[j * AES_BLOCK_SIZE]);
+ oaes_encryption_round(a, c);
+ xor_blocks(b, c);
+ swap_blocks(b, c);
+ copy_block(&long_state[j * AES_BLOCK_SIZE], c);
+ assert(j == e2i(a, MEMORY / AES_BLOCK_SIZE));
+ swap_blocks(a, b);
+ /* Iteration 2 */
+ j = e2i(a, MEMORY / AES_BLOCK_SIZE);
+ copy_block(c, &long_state[j * AES_BLOCK_SIZE]);
+ mul(a, c, d);
+ sum_half_blocks(b, d);
+ swap_blocks(b, c);
+ xor_blocks(b, c);
+ copy_block(&long_state[j * AES_BLOCK_SIZE], c);
+ assert(j == e2i(a, MEMORY / AES_BLOCK_SIZE));
+ swap_blocks(a, b);
+ }
+
+ memcpy(text, state.init, INIT_SIZE_BYTE);
+ for (i = 0; i < MEMORY / INIT_SIZE_BYTE; i++) {
+ for (j = 0; j < INIT_SIZE_BLK; j++) {
+ /*oaes_key_import_data(aes_ctx, &long_state[i * INIT_SIZE_BYTE + j * AES_BLOCK_SIZE], AES_KEY_SIZE);*/
+ oaes_key_import_data(aes_ctx, &state.hs.b[32], AES_KEY_SIZE);
+ xor_blocks(&text[j * AES_BLOCK_SIZE], &long_state[i * INIT_SIZE_BYTE + j * AES_BLOCK_SIZE]);
+ oaes_pseudo_encrypt_ecb(aes_ctx, &text[j * AES_BLOCK_SIZE]);
}
-
- memcpy(state.init, text, INIT_SIZE_BYTE);
- hash_permutation(&state.hs);
- extra_hashes[state.hs.b[0] & 3](&state, 200, hash);
+ }
+ memcpy(state.init, text, INIT_SIZE_BYTE);
+ hash_permutation(&state.hs);
+ /*memcpy(hash, &state, 32);*/
+ extra_hashes[state.hs.b[0] & 3](&state, 200, hash);
+ oaes_free(&aes_ctx);
}
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