chacha: call prehashed version explicitly as generate_chacha_key_prehashed

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
This commit is contained in:
stoffu 2018-03-05 18:24:11 +09:00
parent b2d23b189e
commit 7dfa5e9e6e
No known key found for this signature in database
GPG key ID: 41DAB8343A9EC012
6 changed files with 38 additions and 20 deletions

View file

@ -69,10 +69,17 @@ 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, int cn_variant = 0, bool prehashed=false) {
inline void generate_chacha_key(const void *data, size_t size, chacha_key& key) {
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(), cn_variant, prehashed);
crypto::cn_slow_hash(data, size, pwd_hash.data(), 0/*variant*/, 0/*prehashed*/);
memcpy(&key, pwd_hash.data(), sizeof(key));
}
inline void generate_chacha_key_prehashed(const void *data, size_t size, chacha_key& key) {
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(data, size, pwd_hash.data(), 0/*variant*/, 1/*prehashed*/);
memcpy(&key, pwd_hash.data(), sizeof(key));
}

View file

@ -79,8 +79,7 @@ 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, int variant);
void cn_slow_hash_pre(const void *data, size_t length, char *hash, int variant, bool pre);
void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int prehashed);
void hash_extra_blake(const void *data, size_t length, char *hash);
void hash_extra_groestl(const void *data, size_t length, char *hash);

View file

@ -72,7 +72,11 @@ namespace crypto {
}
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);
cn_slow_hash(data, length, reinterpret_cast<char *>(&hash), variant, 0/*prehashed*/);
}
inline void cn_slow_hash_prehashed(const void *data, std::size_t length, hash &hash, int variant = 0) {
cn_slow_hash(data, length, reinterpret_cast<char *>(&hash), variant, 1/*prehashed*/);
}
inline void tree_hash(const hash *hashes, std::size_t count, hash &root_hash) {

View file

@ -564,11 +564,7 @@ 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, int variant) {
cn_slow_hash_pre(data,length,hash,variant,false);
}
void cn_slow_hash_pre(const void *data, size_t length, char *hash, int variant, bool prehashed)
void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int prehashed)
{
RDATA_ALIGN16 uint8_t expandedKey[240]; /* These buffers are aligned to use later with SSE functions */
@ -909,7 +905,7 @@ 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, int variant)
void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int prehashed)
{
RDATA_ALIGN16 uint8_t expandedKey[240];
RDATA_ALIGN16 uint8_t hp_state[MEMORY];
@ -932,7 +928,11 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant)
/* CryptoNight Step 1: Use Keccak1600 to initialize the 'state' (and 'text') buffers from the data. */
hash_process(&state.hs, data, length);
if (prehashed) {
memcpy(&state.hs, data, length);
} else {
hash_process(&state.hs, data, length);
}
memcpy(text, state.init, INIT_SIZE_BYTE);
VARIANT1_INIT64();
@ -1105,7 +1105,7 @@ 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, int variant)
void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int prehashed)
{
uint8_t text[INIT_SIZE_BYTE];
uint8_t a[AES_BLOCK_SIZE];
@ -1131,7 +1131,11 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant)
long_state = (uint8_t *)malloc(MEMORY);
#endif
hash_process(&state.hs, data, length);
if (prehashed) {
memcpy(&state.hs, data, length);
} else {
hash_process(&state.hs, data, length);
}
memcpy(text, state.init, INIT_SIZE_BYTE);
VARIANT1_INIT64();
@ -1289,7 +1293,7 @@ union cn_slow_hash_state {
};
#pragma pack(pop)
void cn_slow_hash(const void *data, size_t length, char *hash, int variant) {
void cn_slow_hash(const void *data, size_t length, char *hash, int variant, int prehashed) {
uint8_t long_state[MEMORY];
union cn_slow_hash_state state;
uint8_t text[INIT_SIZE_BYTE];
@ -1301,7 +1305,11 @@ void cn_slow_hash(const void *data, size_t length, char *hash, int variant) {
uint8_t aes_key[AES_KEY_SIZE];
oaes_ctx *aes_ctx;
hash_process(&state.hs, data, length);
if (prehashed) {
memcpy(&state.hs, data, length);
} else {
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_ctx *) oaes_alloc();

View file

@ -513,10 +513,10 @@ namespace hw {
char prekey[200];
memmove(prekey, &this->buffer_recv[0], 200);
crypto::generate_chacha_key(&prekey[0], sizeof(prekey), key, 0, true);
crypto::generate_chacha_key_prehashed(&prekey[0], sizeof(prekey), key);
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("generate_chacha_key", "key", (char*)key_x.data(), (char*)key.data());
hw::ledger::check32("generate_chacha_key_prehashed", "key", (char*)key_x.data(), (char*)key.data());
#endif
unlock_device();

View file

@ -52,10 +52,10 @@ 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);
return cn_slow_hash(data, length, hash, 0/*variant*/, 0/*prehashed*/);
}
static void cn_slow_hash_1(const void *data, size_t length, char *hash) {
return cn_slow_hash(data, length, hash, 1);
return cn_slow_hash(data, length, hash, 1/*variant*/, 0/*prehashed*/);
}
}
POP_WARNINGS