From b5680339cfe87714542796b016226eb455560214 Mon Sep 17 00:00:00 2001 From: MASM fan Date: Thu, 13 Feb 2014 01:22:57 +0400 Subject: [PATCH] Implement novacoin mining support * Add timestamp field serialization and deserialization for coinbase; * Add empty signature field for block; * Switch proof-of-work algorithm to scrypt; * Add installation notes. --- INSTALL | 100 ++++++ LICENSE | 3 +- README.md | 9 +- conf/config_sample.py | 14 +- lib/bitcoin_rpc.py | 2 +- lib/block_template.py | 4 +- lib/block_updater.py | 2 +- lib/coinbaser.py | 6 +- lib/coinbasetx.py | 3 +- lib/halfnode.py | 10 +- lib/template_registry.py | 6 +- lib/util.py | 4 + litecoin_scrypt/scrypt.c | 681 ++++++++++++++++++++++++++++++++++++++++ litecoin_scrypt/scrypt.h | 16 + litecoin_scrypt/scryptmodule.c | 29 ++ litecoin_scrypt/setup.py | 11 + mining/__init__.py | 12 +- mining/service.py | 4 +- scripts/blocknotify.sh | 6 +- 19 files changed, 889 insertions(+), 33 deletions(-) create mode 100644 INSTALL create mode 100644 litecoin_scrypt/scrypt.c create mode 100644 litecoin_scrypt/scrypt.h create mode 100644 litecoin_scrypt/scryptmodule.c create mode 100644 litecoin_scrypt/setup.py diff --git a/INSTALL b/INSTALL new file mode 100644 index 0000000..e2b128c --- /dev/null +++ b/INSTALL @@ -0,0 +1,100 @@ +Installation Instructions +========================= + +Step 0: Install novacoind + It MUST be a recent version of novacoind + Set it up and start it! + Downloading the blockchain can take some time! + +Step 1: Install the stratum core + git pull https://github.com/slush0/stratum.git + sudo easy_install stratum + (or if using alternate python: sudo /usr/local/bin/easy_install stratum) + +Step 2: Pull a copy of the miner + git pull https://github.com/CryptoManiac/stratum-mining.git + +Step 3: Configure the Miner + cp conf/config_sample.py conf/config.py + make your changes to conf/config.py + Make sure you set the values in BASIC SETTINGS! These are how to connect to novacoind + and where your money goes! Please read comments carefully, this may be helpful. + +Step 4: Run the pool + twistd -ny launcher.tac -l - + OR - using alternate python + /usr/local/bin/twistd -ny launcher.tac -l - + +You can now set the URL on your stratum proxy (or miner that supports stratum) to: +http://YOURHOSTNAME:3333 + +Novacoindd blocknotify Setup +========================= +Although scary (for me), this is actually pretty easy. + +Step 1: Set Admin Password + Ensure that you have set the ADMIN_PASSWORD_SHA256 parameter in conf/config.py + To make life easy you can run the generateAdminHash script to make the hash + ./scripts/generateAdminHash.sh + +Step 2: Test It + Restart the pool if it's already running + run ./scripts/blocknotify.sh --password --host localhost --port 3333 + Ensure everything is ok. + +Step 3: Run bitcoind with blocknotify + Stop bitcoind if it's already running + bitcoind stop + Wait till it ends + novacoind -blocknotify="/absolute/path/to/scripts/blocknotify.sh --password --host localhost --port 3333" + +Step 4: Adjust pool polling + Now you should be able to watch the pools debug messages for awhile and see the blocknotify come in + once you are sure it's working edit conf/config.py and set + PREVHASH_REFRESH_INTERVAL = to the same value as MERKLE_REFRESH_INTERVAL + restart the pool + +Database Setup +========================= +Table Creation: Tables are auto-created if they don't exist + +None: +Well, this doesn't do anything, so there is nothing to set up + +Sqlite: +THIS IS THE DEFAULT! +Just set the file path in the config file (or keep the default.) +Support for sqlite3 is built into recent python versions. +A couple notes for Sqlite: + - Sqlite and threading/concurancy just doesn't work right for that reason it is disabled. + - Since threading is disabled, The server will "pause" when archiving happens, this will affect + your miners. However this will not happen often (24 hours after finding a share) + +Postgresql: +1: Set up your parameters in the config file. +2: Install the postgresql libraries in your os: + Redhat and the like: + yum install postgresql-libs postgresql-devel + Ubuntu and the like: + apt-get install postgresql postgresql-devel +3: Install the python bindings + easy_install psycopg2 + +Mysql: +1: Set up your parameters in the config file. +2: Install the postgresql libraries in your os: + Redhat and the like: + yum install mysql mysql-devel + Ubuntu and the like: + apt-get install mysql mysql-devel +3: Install the python bindings + easy_install mysql-python + +Problems???? +========================= + +Is your firewall off? +Is novacoind running? + +TODO: are there other problems? + diff --git a/LICENSE b/LICENSE index 0fa0ee3..5813c06 100644 --- a/LICENSE +++ b/LICENSE @@ -1,5 +1,6 @@ -Stratum mining - Bitcoin pool using Stratum protocol +Stratum mining - Novacoin pool using Stratum protocol Copyright (C) 2012 Marek Palatinus +Copyright (C) 2014 Novacoin developers This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as diff --git a/README.md b/README.md index 86b7603..0b43f1c 100644 --- a/README.md +++ b/README.md @@ -1,7 +1,7 @@ stratum-mining ============== -Demo implementation of bitcoin mining pool using Stratum mining protocol. +Demo implementation of novacoin mining pool using Stratum mining protocol. For Stratum mining protocol specification, please visit http://mining.bitcoin.cz/stratum-mining. @@ -10,3 +10,10 @@ Contact This pool implementation is provided by http://mining.bitcoin.cz. You can contact me by email info(at)bitcoin.cz or on IRC #stratum on freenode. + +Modified for novacoin by 0xDEADFACE. You can contact me by emain masmfan(at)gmail.com. + +If you wish to support our project: + +BTC: 1D4KaxBey7y9r11jXkMuQQhvwvMaa1HMWt +NVC: 4WpFe4iTc8zC3UHAzdQX6w9BcRuXFxvPqm diff --git a/conf/config_sample.py b/conf/config_sample.py index 02c7d30..b57346a 100644 --- a/conf/config_sample.py +++ b/conf/config_sample.py @@ -44,12 +44,12 @@ LISTEN_WS_TRANSPORT = None # Port used for secure WebSocket, 'None' for disabling WSS LISTEN_WSS_TRANSPORT = None -# Hostname and credentials for one trusted Bitcoin node ("Satoshi's client"). -# Stratum uses both P2P port (which is 8333 already) and RPC port -BITCOIN_TRUSTED_HOST = 'localhost' -BITCOIN_TRUSTED_PORT = 8332 -BITCOIN_TRUSTED_USER = 'user' -BITCOIN_TRUSTED_PASSWORD = 'somepassword' +# Hostname and credentials for one trusted Novacoin node. +# Stratum uses both P2P port (which is 7777 already) and RPC port +NOVACOIN_TRUSTED_HOST = 'localhost' +NOVACOIN_TRUSTED_PORT = 8344 +NOVACOIN_TRUSTED_USER = 'user' +NOVACOIN_TRUSTED_PASSWORD = 'password' # Use "echo -n '' | sha256sum | cut -f1 -d' ' " # for calculating SHA256 of your preferred password @@ -68,7 +68,7 @@ DATABASE_PASSWORD = '**empty**' # Pool related settings INSTANCE_ID = 31 -CENTRAL_WALLET = 'set_valid_addresss_in_config!' +CENTRAL_WALLET = '4WpFe4iTc8zC3UHAzdQX6w9BcRuXFxvPqm' # local novacoin address where money goes PREVHASH_REFRESH_INTERVAL = 5 # in sec MERKLE_REFRESH_INTERVAL = 60 # How often check memorypool COINBASE_EXTRAS = '/stratum/' diff --git a/lib/bitcoin_rpc.py b/lib/bitcoin_rpc.py index d65c811..e417fc7 100644 --- a/lib/bitcoin_rpc.py +++ b/lib/bitcoin_rpc.py @@ -1,5 +1,5 @@ ''' - Implements simple interface to bitcoind's RPC. + Implements simple interface to novacoind's RPC. ''' import simplejson as json diff --git a/lib/block_template.py b/lib/block_template.py index 5293365..605e69e 100644 --- a/lib/block_template.py +++ b/lib/block_template.py @@ -14,7 +14,7 @@ from stratum import settings class BlockTemplate(halfnode.CBlock): '''Template is used for generating new jobs for clients. Let's iterate extranonce1, extranonce2, ntime and nonce - to find out valid bitcoin block!''' + to find out valid novacoin block!''' coinbase_transaction_class = CoinbaseTransaction @@ -48,7 +48,7 @@ class BlockTemplate(halfnode.CBlock): mt = merkletree.MerkleTree(txhashes) coinbase = self.coinbase_transaction_class(self.timestamper, self.coinbaser, data['coinbasevalue'], - data['coinbaseaux']['flags'], data['height'], settings.COINBASE_EXTRAS) + data['coinbaseaux']['flags'], data['height'], settings.COINBASE_EXTRAS, data['curtime']) self.height = data['height'] self.nVersion = data['version'] diff --git a/lib/block_updater.py b/lib/block_updater.py index fd03711..e4f27cc 100644 --- a/lib/block_updater.py +++ b/lib/block_updater.py @@ -13,7 +13,7 @@ class BlockUpdater(object): This will call registry.update_block when new prevhash appear. This is just failback alternative when something - with ./bitcoind -blocknotify will go wrong. + with ./novacoind -blocknotify will go wrong. ''' def __init__(self, registry, bitcoin_rpc): diff --git a/lib/coinbaser.py b/lib/coinbaser.py index 5111c36..47b9d60 100644 --- a/lib/coinbaser.py +++ b/lib/coinbaser.py @@ -7,7 +7,7 @@ log = stratum.logger.get_logger('coinbaser') # TODO: Add on_* hooks in the app class SimpleCoinbaser(object): - '''This very simple coinbaser uses constant bitcoin address + '''This very simple coinbaser uses constant novacoin address for all generated blocks.''' def __init__(self, bitcoin_rpc, address): @@ -38,7 +38,7 @@ class SimpleCoinbaser(object): log.error("Coinbase address '%s' is NOT valid!" % self.address) def _failure(self, failure): - log.error("Cannot validate Bitcoin address '%s'" % self.address) + log.error("Cannot validate Novacoin address '%s'" % self.address) raise #def on_new_block(self): @@ -49,7 +49,7 @@ class SimpleCoinbaser(object): def get_script_pubkey(self): if not self.is_valid: - # Try again, maybe bitcoind was down? + # Try again, maybe novacoind was down? self._validate() raise Exception("Coinbase address is not validated!") return util.script_to_address(self.address) diff --git a/lib/coinbasetx.py b/lib/coinbasetx.py index 8953106..d26f93c 100644 --- a/lib/coinbasetx.py +++ b/lib/coinbasetx.py @@ -12,7 +12,7 @@ class CoinbaseTransaction(halfnode.CTransaction): extranonce_placeholder = struct.pack(extranonce_type, int('f000000ff111111f', 16)) extranonce_size = struct.calcsize(extranonce_type) - def __init__(self, timestamper, coinbaser, value, flags, height, data): + def __init__(self, timestamper, coinbaser, value, flags, height, data, ntime): super(CoinbaseTransaction, self).__init__() #self.extranonce = 0 @@ -35,6 +35,7 @@ class CoinbaseTransaction(halfnode.CTransaction): tx_out.nValue = value tx_out.scriptPubKey = coinbaser.get_script_pubkey() + self.nTime = ntime # Coinbase timestamp self.vin.append(tx_in) self.vout.append(tx_out) diff --git a/lib/halfnode.py b/lib/halfnode.py index d46ff75..2ef5fff 100644 --- a/lib/halfnode.py +++ b/lib/halfnode.py @@ -128,12 +128,14 @@ class CTxOut(object): class CTransaction(object): def __init__(self): self.nVersion = 1 + self.nTime = 0 self.vin = [] self.vout = [] self.nLockTime = 0 self.sha256 = None def deserialize(self, f): self.nVersion = struct.unpack(" +#include +#include + +static __inline uint32_t +be32dec(const void *pp) +{ + const uint8_t *p = (uint8_t const *)pp; + + return ((uint32_t)(p[3]) + ((uint32_t)(p[2]) << 8) + + ((uint32_t)(p[1]) << 16) + ((uint32_t)(p[0]) << 24)); +} + +static __inline void +be32enc(void *pp, uint32_t x) +{ + uint8_t * p = (uint8_t *)pp; + + p[3] = x & 0xff; + p[2] = (x >> 8) & 0xff; + p[1] = (x >> 16) & 0xff; + p[0] = (x >> 24) & 0xff; +} + +static __inline uint32_t +le32dec(const void *pp) +{ + const uint8_t *p = (uint8_t const *)pp; + + return ((uint32_t)(p[0]) + ((uint32_t)(p[1]) << 8) + + ((uint32_t)(p[2]) << 16) + ((uint32_t)(p[3]) << 24)); +} + +static __inline void +le32enc(void *pp, uint32_t x) +{ + uint8_t * p = (uint8_t *)pp; + + p[0] = x & 0xff; + p[1] = (x >> 8) & 0xff; + p[2] = (x >> 16) & 0xff; + p[3] = (x >> 24) & 0xff; +} + + +typedef struct SHA256Context { + uint32_t state[8]; + uint32_t count[2]; + unsigned char buf[64]; +} SHA256_CTX; + +typedef struct HMAC_SHA256Context { + SHA256_CTX ictx; + SHA256_CTX octx; +} HMAC_SHA256_CTX; + +/* + * Encode a length len/4 vector of (uint32_t) into a length len vector of + * (unsigned char) in big-endian form. Assumes len is a multiple of 4. + */ +static void +be32enc_vect(unsigned char *dst, const uint32_t *src, size_t len) +{ + size_t i; + + for (i = 0; i < len / 4; i++) + be32enc(dst + i * 4, src[i]); +} + +/* + * Decode a big-endian length len vector of (unsigned char) into a length + * len/4 vector of (uint32_t). Assumes len is a multiple of 4. + */ +static void +be32dec_vect(uint32_t *dst, const unsigned char *src, size_t len) +{ + size_t i; + + for (i = 0; i < len / 4; i++) + dst[i] = be32dec(src + i * 4); +} + +/* Elementary functions used by SHA256 */ +#define Ch(x, y, z) ((x & (y ^ z)) ^ z) +#define Maj(x, y, z) ((x & (y | z)) | (y & z)) +#define SHR(x, n) (x >> n) +#define ROTR(x, n) ((x >> n) | (x << (32 - n))) +#define S0(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22)) +#define S1(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25)) +#define s0(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ SHR(x, 3)) +#define s1(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ SHR(x, 10)) + +/* SHA256 round function */ +#define RND(a, b, c, d, e, f, g, h, k) \ + t0 = h + S1(e) + Ch(e, f, g) + k; \ + t1 = S0(a) + Maj(a, b, c); \ + d += t0; \ + h = t0 + t1; + +/* Adjusted round function for rotating state */ +#define RNDr(S, W, i, k) \ + RND(S[(64 - i) % 8], S[(65 - i) % 8], \ + S[(66 - i) % 8], S[(67 - i) % 8], \ + S[(68 - i) % 8], S[(69 - i) % 8], \ + S[(70 - i) % 8], S[(71 - i) % 8], \ + W[i] + k) + +/* + * SHA256 block compression function. The 256-bit state is transformed via + * the 512-bit input block to produce a new state. + */ +static void +SHA256_Transform(uint32_t * state, const unsigned char block[64]) +{ + uint32_t W[64]; + uint32_t S[8]; + uint32_t t0, t1; + int i; + + /* 1. Prepare message schedule W. */ + be32dec_vect(W, block, 64); + for (i = 16; i < 64; i++) + W[i] = s1(W[i - 2]) + W[i - 7] + s0(W[i - 15]) + W[i - 16]; + + /* 2. Initialize working variables. */ + memcpy(S, state, 32); + + /* 3. Mix. */ + RNDr(S, W, 0, 0x428a2f98); + RNDr(S, W, 1, 0x71374491); + RNDr(S, W, 2, 0xb5c0fbcf); + RNDr(S, W, 3, 0xe9b5dba5); + RNDr(S, W, 4, 0x3956c25b); + RNDr(S, W, 5, 0x59f111f1); + RNDr(S, W, 6, 0x923f82a4); + RNDr(S, W, 7, 0xab1c5ed5); + RNDr(S, W, 8, 0xd807aa98); + RNDr(S, W, 9, 0x12835b01); + RNDr(S, W, 10, 0x243185be); + RNDr(S, W, 11, 0x550c7dc3); + RNDr(S, W, 12, 0x72be5d74); + RNDr(S, W, 13, 0x80deb1fe); + RNDr(S, W, 14, 0x9bdc06a7); + RNDr(S, W, 15, 0xc19bf174); + RNDr(S, W, 16, 0xe49b69c1); + RNDr(S, W, 17, 0xefbe4786); + RNDr(S, W, 18, 0x0fc19dc6); + RNDr(S, W, 19, 0x240ca1cc); + RNDr(S, W, 20, 0x2de92c6f); + RNDr(S, W, 21, 0x4a7484aa); + RNDr(S, W, 22, 0x5cb0a9dc); + RNDr(S, W, 23, 0x76f988da); + RNDr(S, W, 24, 0x983e5152); + RNDr(S, W, 25, 0xa831c66d); + RNDr(S, W, 26, 0xb00327c8); + RNDr(S, W, 27, 0xbf597fc7); + RNDr(S, W, 28, 0xc6e00bf3); + RNDr(S, W, 29, 0xd5a79147); + RNDr(S, W, 30, 0x06ca6351); + RNDr(S, W, 31, 0x14292967); + RNDr(S, W, 32, 0x27b70a85); + RNDr(S, W, 33, 0x2e1b2138); + RNDr(S, W, 34, 0x4d2c6dfc); + RNDr(S, W, 35, 0x53380d13); + RNDr(S, W, 36, 0x650a7354); + RNDr(S, W, 37, 0x766a0abb); + RNDr(S, W, 38, 0x81c2c92e); + RNDr(S, W, 39, 0x92722c85); + RNDr(S, W, 40, 0xa2bfe8a1); + RNDr(S, W, 41, 0xa81a664b); + RNDr(S, W, 42, 0xc24b8b70); + RNDr(S, W, 43, 0xc76c51a3); + RNDr(S, W, 44, 0xd192e819); + RNDr(S, W, 45, 0xd6990624); + RNDr(S, W, 46, 0xf40e3585); + RNDr(S, W, 47, 0x106aa070); + RNDr(S, W, 48, 0x19a4c116); + RNDr(S, W, 49, 0x1e376c08); + RNDr(S, W, 50, 0x2748774c); + RNDr(S, W, 51, 0x34b0bcb5); + RNDr(S, W, 52, 0x391c0cb3); + RNDr(S, W, 53, 0x4ed8aa4a); + RNDr(S, W, 54, 0x5b9cca4f); + RNDr(S, W, 55, 0x682e6ff3); + RNDr(S, W, 56, 0x748f82ee); + RNDr(S, W, 57, 0x78a5636f); + RNDr(S, W, 58, 0x84c87814); + RNDr(S, W, 59, 0x8cc70208); + RNDr(S, W, 60, 0x90befffa); + RNDr(S, W, 61, 0xa4506ceb); + RNDr(S, W, 62, 0xbef9a3f7); + RNDr(S, W, 63, 0xc67178f2); + + /* 4. Mix local working variables into global state */ + for (i = 0; i < 8; i++) + state[i] += S[i]; + + /* Clean the stack. */ + memset(W, 0, 256); + memset(S, 0, 32); + t0 = t1 = 0; +} + +static unsigned char PAD[64] = { + 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; + +/* SHA-256 initialization. Begins a SHA-256 operation. */ +static void +SHA256_Init(SHA256_CTX * ctx) +{ + + /* Zero bits processed so far */ + ctx->count[0] = ctx->count[1] = 0; + + /* Magic initialization constants */ + ctx->state[0] = 0x6A09E667; + ctx->state[1] = 0xBB67AE85; + ctx->state[2] = 0x3C6EF372; + ctx->state[3] = 0xA54FF53A; + ctx->state[4] = 0x510E527F; + ctx->state[5] = 0x9B05688C; + ctx->state[6] = 0x1F83D9AB; + ctx->state[7] = 0x5BE0CD19; +} + +/* Add bytes into the hash */ +static void +SHA256_Update(SHA256_CTX * ctx, const void *in, size_t len) +{ + uint32_t bitlen[2]; + uint32_t r; + const unsigned char *src = in; + + /* Number of bytes left in the buffer from previous updates */ + r = (ctx->count[1] >> 3) & 0x3f; + + /* Convert the length into a number of bits */ + bitlen[1] = ((uint32_t)len) << 3; + bitlen[0] = (uint32_t)(len >> 29); + + /* Update number of bits */ + if ((ctx->count[1] += bitlen[1]) < bitlen[1]) + ctx->count[0]++; + ctx->count[0] += bitlen[0]; + + /* Handle the case where we don't need to perform any transforms */ + if (len < 64 - r) { + memcpy(&ctx->buf[r], src, len); + return; + } + + /* Finish the current block */ + memcpy(&ctx->buf[r], src, 64 - r); + SHA256_Transform(ctx->state, ctx->buf); + src += 64 - r; + len -= 64 - r; + + /* Perform complete blocks */ + while (len >= 64) { + SHA256_Transform(ctx->state, src); + src += 64; + len -= 64; + } + + /* Copy left over data into buffer */ + memcpy(ctx->buf, src, len); +} + +/* Add padding and terminating bit-count. */ +static void +SHA256_Pad(SHA256_CTX * ctx) +{ + unsigned char len[8]; + uint32_t r, plen; + + /* + * Convert length to a vector of bytes -- we do this now rather + * than later because the length will change after we pad. + */ + be32enc_vect(len, ctx->count, 8); + + /* Add 1--64 bytes so that the resulting length is 56 mod 64 */ + r = (ctx->count[1] >> 3) & 0x3f; + plen = (r < 56) ? (56 - r) : (120 - r); + SHA256_Update(ctx, PAD, (size_t)plen); + + /* Add the terminating bit-count */ + SHA256_Update(ctx, len, 8); +} + +/* + * SHA-256 finalization. Pads the input data, exports the hash value, + * and clears the context state. + */ +static void +SHA256_Final(unsigned char digest[32], SHA256_CTX * ctx) +{ + + /* Add padding */ + SHA256_Pad(ctx); + + /* Write the hash */ + be32enc_vect(digest, ctx->state, 32); + + /* Clear the context state */ + memset((void *)ctx, 0, sizeof(*ctx)); +} + +/* Initialize an HMAC-SHA256 operation with the given key. */ +static void +HMAC_SHA256_Init(HMAC_SHA256_CTX * ctx, const void * _K, size_t Klen) +{ + unsigned char pad[64]; + unsigned char khash[32]; + const unsigned char * K = _K; + size_t i; + + /* If Klen > 64, the key is really SHA256(K). */ + if (Klen > 64) { + SHA256_Init(&ctx->ictx); + SHA256_Update(&ctx->ictx, K, Klen); + SHA256_Final(khash, &ctx->ictx); + K = khash; + Klen = 32; + } + + /* Inner SHA256 operation is SHA256(K xor [block of 0x36] || data). */ + SHA256_Init(&ctx->ictx); + memset(pad, 0x36, 64); + for (i = 0; i < Klen; i++) + pad[i] ^= K[i]; + SHA256_Update(&ctx->ictx, pad, 64); + + /* Outer SHA256 operation is SHA256(K xor [block of 0x5c] || hash). */ + SHA256_Init(&ctx->octx); + memset(pad, 0x5c, 64); + for (i = 0; i < Klen; i++) + pad[i] ^= K[i]; + SHA256_Update(&ctx->octx, pad, 64); + + /* Clean the stack. */ + memset(khash, 0, 32); +} + +/* Add bytes to the HMAC-SHA256 operation. */ +static void +HMAC_SHA256_Update(HMAC_SHA256_CTX * ctx, const void *in, size_t len) +{ + + /* Feed data to the inner SHA256 operation. */ + SHA256_Update(&ctx->ictx, in, len); +} + +/* Finish an HMAC-SHA256 operation. */ +static void +HMAC_SHA256_Final(unsigned char digest[32], HMAC_SHA256_CTX * ctx) +{ + unsigned char ihash[32]; + + /* Finish the inner SHA256 operation. */ + SHA256_Final(ihash, &ctx->ictx); + + /* Feed the inner hash to the outer SHA256 operation. */ + SHA256_Update(&ctx->octx, ihash, 32); + + /* Finish the outer SHA256 operation. */ + SHA256_Final(digest, &ctx->octx); + + /* Clean the stack. */ + memset(ihash, 0, 32); +} + +/** + * PBKDF2_SHA256(passwd, passwdlen, salt, saltlen, c, buf, dkLen): + * Compute PBKDF2(passwd, salt, c, dkLen) using HMAC-SHA256 as the PRF, and + * write the output to buf. The value dkLen must be at most 32 * (2^32 - 1). + */ +static void +PBKDF2_SHA256(const uint8_t * passwd, size_t passwdlen, const uint8_t * salt, + size_t saltlen, uint64_t c, uint8_t * buf, size_t dkLen) +{ + HMAC_SHA256_CTX PShctx, hctx; + size_t i; + uint8_t ivec[4]; + uint8_t U[32]; + uint8_t T[32]; + uint64_t j; + int k; + size_t clen; + + /* Compute HMAC state after processing P and S. */ + HMAC_SHA256_Init(&PShctx, passwd, passwdlen); + HMAC_SHA256_Update(&PShctx, salt, saltlen); + + /* Iterate through the blocks. */ + for (i = 0; i * 32 < dkLen; i++) { + /* Generate INT(i + 1). */ + be32enc(ivec, (uint32_t)(i + 1)); + + /* Compute U_1 = PRF(P, S || INT(i)). */ + memcpy(&hctx, &PShctx, sizeof(HMAC_SHA256_CTX)); + HMAC_SHA256_Update(&hctx, ivec, 4); + HMAC_SHA256_Final(U, &hctx); + + /* T_i = U_1 ... */ + memcpy(T, U, 32); + + for (j = 2; j <= c; j++) { + /* Compute U_j. */ + HMAC_SHA256_Init(&hctx, passwd, passwdlen); + HMAC_SHA256_Update(&hctx, U, 32); + HMAC_SHA256_Final(U, &hctx); + + /* ... xor U_j ... */ + for (k = 0; k < 32; k++) + T[k] ^= U[k]; + } + + /* Copy as many bytes as necessary into buf. */ + clen = dkLen - i * 32; + if (clen > 32) + clen = 32; + memcpy(&buf[i * 32], T, clen); + } + + /* Clean PShctx, since we never called _Final on it. */ + memset(&PShctx, 0, sizeof(HMAC_SHA256_CTX)); +} + + +static void blkcpy(void *, void *, size_t); +static void blkxor(void *, void *, size_t); +static void salsa20_8(uint32_t[16]); +static void blockmix_salsa8(uint32_t *, uint32_t *, uint32_t *, size_t); +static uint64_t integerify(void *, size_t); +static void smix(uint8_t *, size_t, uint64_t, uint32_t *, uint32_t *); + +static void +blkcpy(void * dest, void * src, size_t len) +{ + size_t * D = dest; + size_t * S = src; + size_t L = len / sizeof(size_t); + size_t i; + + for (i = 0; i < L; i++) + D[i] = S[i]; +} + +static void +blkxor(void * dest, void * src, size_t len) +{ + size_t * D = dest; + size_t * S = src; + size_t L = len / sizeof(size_t); + size_t i; + + for (i = 0; i < L; i++) + D[i] ^= S[i]; +} + +/** + * salsa20_8(B): + * Apply the salsa20/8 core to the provided block. + */ +static void +salsa20_8(uint32_t B[16]) +{ + uint32_t x[16]; + size_t i; + + blkcpy(x, B, 64); + for (i = 0; i < 8; i += 2) { +#define R(a,b) (((a) << (b)) | ((a) >> (32 - (b)))) + /* Operate on columns. */ + x[ 4] ^= R(x[ 0]+x[12], 7); x[ 8] ^= R(x[ 4]+x[ 0], 9); + x[12] ^= R(x[ 8]+x[ 4],13); x[ 0] ^= R(x[12]+x[ 8],18); + + x[ 9] ^= R(x[ 5]+x[ 1], 7); x[13] ^= R(x[ 9]+x[ 5], 9); + x[ 1] ^= R(x[13]+x[ 9],13); x[ 5] ^= R(x[ 1]+x[13],18); + + x[14] ^= R(x[10]+x[ 6], 7); x[ 2] ^= R(x[14]+x[10], 9); + x[ 6] ^= R(x[ 2]+x[14],13); x[10] ^= R(x[ 6]+x[ 2],18); + + x[ 3] ^= R(x[15]+x[11], 7); x[ 7] ^= R(x[ 3]+x[15], 9); + x[11] ^= R(x[ 7]+x[ 3],13); x[15] ^= R(x[11]+x[ 7],18); + + /* Operate on rows. */ + x[ 1] ^= R(x[ 0]+x[ 3], 7); x[ 2] ^= R(x[ 1]+x[ 0], 9); + x[ 3] ^= R(x[ 2]+x[ 1],13); x[ 0] ^= R(x[ 3]+x[ 2],18); + + x[ 6] ^= R(x[ 5]+x[ 4], 7); x[ 7] ^= R(x[ 6]+x[ 5], 9); + x[ 4] ^= R(x[ 7]+x[ 6],13); x[ 5] ^= R(x[ 4]+x[ 7],18); + + x[11] ^= R(x[10]+x[ 9], 7); x[ 8] ^= R(x[11]+x[10], 9); + x[ 9] ^= R(x[ 8]+x[11],13); x[10] ^= R(x[ 9]+x[ 8],18); + + x[12] ^= R(x[15]+x[14], 7); x[13] ^= R(x[12]+x[15], 9); + x[14] ^= R(x[13]+x[12],13); x[15] ^= R(x[14]+x[13],18); +#undef R + } + for (i = 0; i < 16; i++) + B[i] += x[i]; +} + +/** + * blockmix_salsa8(Bin, Bout, X, r): + * Compute Bout = BlockMix_{salsa20/8, r}(Bin). The input Bin must be 128r + * bytes in length; the output Bout must also be the same size. The + * temporary space X must be 64 bytes. + */ +static void +blockmix_salsa8(uint32_t * Bin, uint32_t * Bout, uint32_t * X, size_t r) +{ + size_t i; + + /* 1: X <-- B_{2r - 1} */ + blkcpy(X, &Bin[(2 * r - 1) * 16], 64); + + /* 2: for i = 0 to 2r - 1 do */ + for (i = 0; i < 2 * r; i += 2) { + /* 3: X <-- H(X \xor B_i) */ + blkxor(X, &Bin[i * 16], 64); + salsa20_8(X); + + /* 4: Y_i <-- X */ + /* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */ + blkcpy(&Bout[i * 8], X, 64); + + /* 3: X <-- H(X \xor B_i) */ + blkxor(X, &Bin[i * 16 + 16], 64); + salsa20_8(X); + + /* 4: Y_i <-- X */ + /* 6: B' <-- (Y_0, Y_2 ... Y_{2r-2}, Y_1, Y_3 ... Y_{2r-1}) */ + blkcpy(&Bout[i * 8 + r * 16], X, 64); + } +} + +/** + * integerify(B, r): + * Return the result of parsing B_{2r-1} as a little-endian integer. + */ +static uint64_t +integerify(void * B, size_t r) +{ + uint32_t * X = (void *)((uintptr_t)(B) + (2 * r - 1) * 64); + + return (((uint64_t)(X[1]) << 32) + X[0]); +} + +/** + * smix(B, r, N, V, XY): + * Compute B = SMix_r(B, N). The input B must be 128r bytes in length; + * the temporary storage V must be 128rN bytes in length; the temporary + * storage XY must be 256r + 64 bytes in length. The value N must be a + * power of 2 greater than 1. The arrays B, V, and XY must be aligned to a + * multiple of 64 bytes. + */ +static void +smix(uint8_t * B, size_t r, uint64_t N, uint32_t * V, uint32_t * XY) +{ + uint32_t * X = XY; + uint32_t * Y = &XY[32 * r]; + uint32_t * Z = &XY[64 * r]; + uint64_t i; + uint64_t j; + size_t k; + + /* 1: X <-- B */ + for (k = 0; k < 32 * r; k++) + X[k] = le32dec(&B[4 * k]); + + /* 2: for i = 0 to N - 1 do */ + for (i = 0; i < N; i += 2) { + /* 3: V_i <-- X */ + blkcpy(&V[i * (32 * r)], X, 128 * r); + + /* 4: X <-- H(X) */ + blockmix_salsa8(X, Y, Z, r); + + /* 3: V_i <-- X */ + blkcpy(&V[(i + 1) * (32 * r)], Y, 128 * r); + + /* 4: X <-- H(X) */ + blockmix_salsa8(Y, X, Z, r); + } + + /* 6: for i = 0 to N - 1 do */ + for (i = 0; i < N; i += 2) { + /* 7: j <-- Integerify(X) mod N */ + j = integerify(X, r) & (N - 1); + + /* 8: X <-- H(X \xor V_j) */ + blkxor(X, &V[j * (32 * r)], 128 * r); + blockmix_salsa8(X, Y, Z, r); + + /* 7: j <-- Integerify(X) mod N */ + j = integerify(Y, r) & (N - 1); + + /* 8: X <-- H(X \xor V_j) */ + blkxor(Y, &V[j * (32 * r)], 128 * r); + blockmix_salsa8(Y, X, Z, r); + } + + /* 10: B' <-- X */ + for (k = 0; k < 32 * r; k++) + le32enc(&B[4 * k], X[k]); +} + +/* cpu and memory intensive function to transform a 80 byte buffer into a 32 byte output + scratchpad size needs to be at least 63 + (128 * r * p) + (256 * r + 64) + (128 * r * N) bytes + */ +void scrypt_1024_1_1_256_sp(const char* input, char* output, char* scratchpad) +{ + uint8_t * B; + uint32_t * V; + uint32_t * XY; + uint32_t i; + + const uint32_t N = 1024; + const uint32_t r = 1; + const uint32_t p = 1; + + B = (uint8_t *)(((uintptr_t)(scratchpad) + 63) & ~ (uintptr_t)(63)); + XY = (uint32_t *)(B + (128 * r * p)); + V = (uint32_t *)(B + (128 * r * p) + (256 * r + 64)); + + /* 1: (B_0 ... B_{p-1}) <-- PBKDF2(P, S, 1, p * MFLen) */ + PBKDF2_SHA256((const uint8_t*)input, 80, (const uint8_t*)input, 80, 1, B, p * 128 * r); + + /* 2: for i = 0 to p - 1 do */ + for (i = 0; i < p; i++) { + /* 3: B_i <-- MF(B_i, N) */ + smix(&B[i * 128 * r], r, N, V, XY); + } + + /* 5: DK <-- PBKDF2(P, B, 1, dkLen) */ + PBKDF2_SHA256((const uint8_t*)input, 80, B, p * 128 * r, 1, (uint8_t*)output, 32); +} + +void scrypt_1024_1_1_256(const char* input, char* output) +{ + char scratchpad[131583]; + scrypt_1024_1_1_256_sp(input, output, scratchpad); +} + diff --git a/litecoin_scrypt/scrypt.h b/litecoin_scrypt/scrypt.h new file mode 100644 index 0000000..694158d --- /dev/null +++ b/litecoin_scrypt/scrypt.h @@ -0,0 +1,16 @@ +#ifndef SCRYPT_H +#define SCRYPT_H + +#ifdef __cplusplus +extern "C" { +#endif + +void scrypt_1024_1_1_256(const char* input, char* output); +void scrypt_1024_1_1_256_sp(const char* input, char* output, char* scratchpad); +const int scrypt_scratchpad_size = 131583; + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/litecoin_scrypt/scryptmodule.c b/litecoin_scrypt/scryptmodule.c new file mode 100644 index 0000000..e150315 --- /dev/null +++ b/litecoin_scrypt/scryptmodule.c @@ -0,0 +1,29 @@ +#include + +//#include "scrypt.h" + +static PyObject *scrypt_getpowhash(PyObject *self, PyObject *args) +{ + char *output; + PyObject *value; + PyStringObject *input; + if (!PyArg_ParseTuple(args, "S", &input)) + return NULL; + Py_INCREF(input); + output = PyMem_Malloc(32); + + scrypt_1024_1_1_256((char *)PyString_AsString((PyObject*) input), output); + Py_DECREF(input); + value = Py_BuildValue("s#", output, 32); + PyMem_Free(output); + return value; +} + +static PyMethodDef ScryptMethods[] = { + { "getPoWHash", scrypt_getpowhash, METH_VARARGS, "Returns the proof of work hash using scrypt" }, + { NULL, NULL, 0, NULL } +}; + +PyMODINIT_FUNC initltc_scrypt(void) { + (void) Py_InitModule("ltc_scrypt", ScryptMethods); +} diff --git a/litecoin_scrypt/setup.py b/litecoin_scrypt/setup.py new file mode 100644 index 0000000..8304844 --- /dev/null +++ b/litecoin_scrypt/setup.py @@ -0,0 +1,11 @@ +from distutils.core import setup, Extension + +ltc_scrypt_module = Extension('ltc_scrypt', + sources = ['scryptmodule.c', + 'scrypt.c'], + include_dirs=['.']) + +setup (name = 'ltc_scrypt', + version = '1.0', + description = 'Bindings for scrypt proof of work used by Litecoin', + ext_modules = [ltc_scrypt_module]) diff --git a/mining/__init__.py b/mining/__init__.py index a8f3af9..c406e8d 100644 --- a/mining/__init__.py +++ b/mining/__init__.py @@ -24,21 +24,21 @@ def setup(on_startup): from lib.block_template import BlockTemplate from lib.coinbaser import SimpleCoinbaser - bitcoin_rpc = BitcoinRPC(settings.BITCOIN_TRUSTED_HOST, - settings.BITCOIN_TRUSTED_PORT, - settings.BITCOIN_TRUSTED_USER, - settings.BITCOIN_TRUSTED_PASSWORD) + bitcoin_rpc = BitcoinRPC(settings.NOVACOIN_TRUSTED_HOST, + settings.NOVACOIN_TRUSTED_PORT, + settings.NOVACOIN_TRUSTED_USER, + settings.NOVACOIN_TRUSTED_PASSWORD) import stratum.logger log = stratum.logger.get_logger('mining') - log.info('Waiting for bitcoin RPC...') + log.info('Waiting for novacoin RPC...') while True: try: result = (yield bitcoin_rpc.getblocktemplate()) if isinstance(result, dict): - log.info('Response from bitcoin RPC OK') + log.info('Response from novacoin RPC OK') break except: time.sleep(1) diff --git a/mining/service.py b/mining/service.py index 7bf4dce..4242542 100644 --- a/mining/service.py +++ b/mining/service.py @@ -23,7 +23,7 @@ class MiningService(GenericService): @admin def update_block(self): - '''Connect this RPC call to 'bitcoind -blocknotify' for + '''Connect this RPC call to 'novacoind -blocknotify' for instant notification about new block on the network. See blocknotify.sh in /scripts/ for more info.''' @@ -112,7 +112,7 @@ class MiningService(GenericService): submit_time, True) if on_submit != None: - # Pool performs submitblock() to bitcoind. Let's hook + # Pool performs submitblock() to novacoind. Let's hook # to result and report it to share manager on_submit.addCallback(Interfaces.share_manager.on_submit_block, worker_name, block_header, block_hash, submit_time) diff --git a/scripts/blocknotify.sh b/scripts/blocknotify.sh index 891b9db..41b1959 100755 --- a/scripts/blocknotify.sh +++ b/scripts/blocknotify.sh @@ -1,7 +1,7 @@ #!/usr/bin/env python -# Send notification to Stratum mining instance on localhost that there's new bitcoin block +# Send notification to Stratum mining instance on localhost that there's new novacoin block # You can use this script directly as an variable for -blocknotify argument: -# ./bitcoind -blocknotify="blocknotify.sh --password admin_password" +# ./novacoind -blocknotify="blocknotify.sh --password admin_password" # This is also very basic example how to use Stratum protocol in native Python import socket @@ -12,7 +12,7 @@ import time start = time.time() -parser = argparse.ArgumentParser(description='Send notification to Stratum instance about new bitcoin block.') +parser = argparse.ArgumentParser(description='Send notification to Stratum instance about new novacoin block.') parser.add_argument('--password', dest='password', type=str, help='use admin password from Stratum server config') parser.add_argument('--host', dest='host', type=str, default='localhost', help='hostname of Stratum mining instance') parser.add_argument('--port', dest='port', type=int, default=3333, help='port of Stratum mining instance') -- 1.7.1