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Draft implementation of Ravencoin utils

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MoneroOcean
2020-10-31 01:53:33 +00:00
parent f9c6b2c328
commit dc04c5a0dd
1 changed files with 17 additions and 7 deletions
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20
index.js
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@@ -56,6 +56,9 @@ function varIntBuffer(n) {
}
};
let last_epoch_number;
let last_seedhash;
module.exports.RavenBlockTemplate = function(rpcData, poolAddress) {
// epoch length
const EPOCH_LENGTH = 7500;
@@ -112,21 +115,28 @@ module.exports.RavenBlockTemplate = function(rpcData, poolAddress) {
blob = new Buffer.concat([ blob, new Buffer(value.data, 'hex') ]);
});
let sha3 = new SHA3.SHA3Hash(256);
let seedhash_buf = new Buffer(32, 0);
const epoch_number = Math.floor(rpcData.height / EPOCH_LENGTH);
if (last_epoch_number !== epoch_number) {
let sha3 = new SHA3.SHA3Hash(256);
if (last_epoch_number && last_epoch_number + 1 === epoch_number) {
last_seedhash = sha3.update(last_seedhash).digest();
} else {
last_seedhash = new Buffer(32, 0);
for (let i=0; i < epoch_number; i++) {
seedhash_buf = sha3.update(seedhash_buf).digest();
last_seedhash = sha3.update(last_seedhash).digest();
sha3.reset();
}
}
last_epoch_number = epoch_number;
}
const diff1 = 0x00000000ff000000000000000000000000000000000000000000000000000000;
const difficulty = parseFloat((diff1 / bignum(rpcData.target, 16).toNumber()).toFixed(9));
return {
blocktemplate_blob: blob.toString('hex'),
reserved_offset: offset1 + 4 /* txCoinbase.version */ + 1 /* txCoinbase.marker */ + 1 /* txCoinbase.flag */ + 1 /* txCoinbase.vinLen */,
seed_hash: seedhash_buf.toString('hex'),
reserved_offset: offset1 + 4 /* txCoinbase.version */ + 1 /* txCoinbase.vinLen */,
seed_hash: last_seedhash.toString('hex'),
difficulty: difficulty,
height: rpcData.height,
rpc: rpcData,