#include < string>
#include < sstream>
#include < fstream>
#include "picosha2.h"
#include < algorithm>
using namespace std;
bool isFirst0(string input){ // determines if the first char in string is 0
if (input.at(0)=='0'){
return true;
}
return false;
}
string concat(string fileName, int blockNum){ // cocncats the pieces of a block
ifstream inFile;
inFile.open(fileName);
string prevBlock;
string merkle;
string nonce;
inFile >> prevBlock;
inFile >> merkle;
inFile >> nonce;
string concat;
concat = prevBlock + merkle + nonce;
//cout << concat << endl;
return concat;
}
int hexCharToInt(char a){ // converts hex to int
if(a>='0' && a<='9')
return(a-48);
else if(a>='A' && a<='Z')
return(a-55);
else
return(a-87);
}
std::string hexToString(std::string str){ // hex to string
std::stringstream HexString;
for(int i=0;i> prevBlock;
inFile >> merkle;
inFile >> nonce;
block1 = prevBlock + merkle + nonce;
string hash1 = toHash(block1);
string prevBlock2; string merkle2; string nonce2; string block2;
inFile >> prevBlock2;
inFile >> merkle2;
inFile >> nonce2;
block2 = prevBlock2 + merkle2 + nonce2;
string hash2 = toHash(block2);
string prevBlock3; string merkle3; string nonce3; string block3;
inFile >> prevBlock3;
inFile >> merkle3;
inFile >> nonce3;
block3 = prevBlock3 + merkle3 + nonce3;
string hash3 = toHash(block3);
bool hashVal1 = isFirst0(hash1);
bool hashVal2 = isFirst0(hash2);
bool hashVal3 = isFirst0(hash3);
bool allVal = (hashVal3 && hashVal2 && hashVal1);
//cout << allVal << endl;
bool isLinked = false;
if((prevBlock==hash2)&&(prevBlock2==hash3)){
isLinked = true;
}
//cout << isLinked << endl;
if (isLinked&&allVal){
return true;
}
return false;
}
string findMerkle(string fileName){ // finds the merkle root
ifstream inFile;
inFile.open(fileName);
string one; string two; string three; string four; string five; string six; string seven; string eight;
getline(inFile, one); getline(inFile, two); getline(inFile, three); getline(inFile, four); getline(inFile, five); getline(inFile, six); getline(inFile, seven); getline(inFile, eight);
string oneTwo = picosha2::hash256_hex_string((picosha2::hash256_hex_string(one)) + (picosha2::hash256_hex_string(two)));
string threeFour = picosha2::hash256_hex_string((picosha2::hash256_hex_string(three)) + (picosha2::hash256_hex_string(four)));
string fiveSix = picosha2::hash256_hex_string((picosha2::hash256_hex_string(five)) + (picosha2::hash256_hex_string(six)));
string sevenEight = picosha2::hash256_hex_string((picosha2::hash256_hex_string(seven)) + (picosha2::hash256_hex_string(eight)));
string oneFour = picosha2::hash256_hex_string(oneTwo + threeFour);
string fiveEight = picosha2::hash256_hex_string(fiveSix + sevenEight);
string merkleRoot = picosha2::hash256_hex_string(oneFour + fiveEight);
//cout << oneTwo << endl;
return merkleRoot;
}
string DecimalToHex(int decimal) { // converts decimals to hexadecimals
string hex ="";
int value = decimal;
int digit = 0;
char hexdig = '1';
while (value > 0){
digit = value % 16; // determining remainder, then changing hexdig to match the hexadecimal value of that remainder
if (digit == 1){
hexdig = '1';
}if (digit == 2){
hexdig = '2';
}if (digit == 3){
hexdig = '3';
}if (digit == 4){
hexdig = '4';
}if (digit == 5){
hexdig = '5';
}if (digit == 6){
hexdig = '6';
}if (digit == 7){
hexdig = '7';
}if (digit == 8){
hexdig = '8';
}if (digit == 9){
hexdig = '9';
}if (digit == 10){
hexdig = 'A';
}if (digit == 11){
hexdig = 'B';
}if (digit == 12){
hexdig = 'C';
}if (digit == 13){
hexdig = 'D';
}if (digit == 14){
hexdig = 'E';
}if (digit == 15){
hexdig = 'F';
}
hex.insert(hex.begin(), hexdig); // inserting hexdig into the string
value /= 16;
}
return hex;
}
int main(int argc, char *argv[]){ // main function runs program
string block= "";
string transaction = "";
cin>> block;
cin >> transaction;
bool valid = areBlocksValid(block);
//cout << valid << endl;
string merkle = findMerkle(transaction);
if(valid == 0){
cout << merkle << endl;
} else if (valid == 1){
ifstream inFile;
inFile.open(block);
string prevBlock; string merkle2; string nonce; string block1;
inFile >> prevBlock;
inFile >> merkle2;
inFile >> nonce;
block1 = prevBlock + merkle2 + nonce;
string hash1 = toHash(block1);
string mineFirst = hash1 + merkle;
int nonceTrack = 00000001;
string nonceHex = DecimalToHex(nonceTrack);
//cout << nonceHex.length() << endl;
//nonceHex = std::string( 1, '0').append( nonceHex);
//cout << nonceHex.length() << endl;
while (nonceHex.length() <8){
nonceHex = std::string( 1, '0').append( nonceHex);
//cout<< nonceHex.length() << endl;
}
//cout << nonceHex << endl;
string mine = mineFirst + nonceHex;
cout << mine << endl;
string mineHash = picosha2::hash256_hex_string(mine);
while (isFirst0(mineHash)!=true){
nonceTrack = nonceTrack + 1;
nonceHex = DecimalToHex(nonceTrack);
while (nonceHex.length() <8){
nonceHex = std::string( 1, '0').append( nonceHex);
//cout<< nonceHex.length() << endl;
}
string mine = mineFirst + nonceHex;
mineHash = picosha2::hash256_hex_string(mine);
}
//cout << mineHash << endl;
cout << hash1 << " " << merkle << " " << nonceHex << endl;
}
}
/*
The MIT License (MIT)
Copyright (C) 2017 okdshin
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
#ifndef PICOSHA2_H
#define PICOSHA2_H
// picosha2:20140213
#ifndef PICOSHA2_BUFFER_SIZE_FOR_INPUT_ITERATOR
#define PICOSHA2_BUFFER_SIZE_FOR_INPUT_ITERATOR \
1048576 //=1024*1024: default is 1MB memory
#endif
#include
#include
#include
#include
#include
namespace picosha2 {
typedef unsigned long word_t;
typedef unsigned char byte_t;
namespace detail {
inline byte_t mask_8bit(byte_t x) { return x & 0xff; }
inline word_t mask_32bit(word_t x) { return x & 0xffffffff; }
const word_t add_constant[64] = {
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b,
0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,
0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2};
const word_t initial_message_digest[8] = {0x6a09e667, 0xbb67ae85, 0x3c6ef372,
0xa54ff53a, 0x510e527f, 0x9b05688c,
0x1f83d9ab, 0x5be0cd19};
inline word_t ch(word_t x, word_t y, word_t z) { return (x & y) ^ ((~x) & z); }
inline word_t maj(word_t x, word_t y, word_t z) {
return (x & y) ^ (x & z) ^ (y & z);
}
inline word_t rotr(word_t x, std::size_t n) {
assert(n < 32);
return mask_32bit((x >> n) | (x << (32 - n)));
}
inline word_t bsig0(word_t x) { return rotr(x, 2) ^ rotr(x, 13) ^ rotr(x, 22); }
inline word_t bsig1(word_t x) { return rotr(x, 6) ^ rotr(x, 11) ^ rotr(x, 25); }
inline word_t shr(word_t x, std::size_t n) {
assert(n < 32);
return x >> n;
}
inline word_t ssig0(word_t x) { return rotr(x, 7) ^ rotr(x, 18) ^ shr(x, 3); }
inline word_t ssig1(word_t x) { return rotr(x, 17) ^ rotr(x, 19) ^ shr(x, 10); }
template
void hash256_block(RaIter1 message_digest, RaIter2 first, RaIter2 last) {
assert(first + 64 == last);
static_cast(last); // for avoiding unused-variable warning
word_t w[64];
std::fill(w, w + 64, 0);
for (std::size_t i = 0; i < 16; ++i) {
w[i] = (static_cast(mask_8bit(*(first + i * 4))) << 24) |
(static_cast(mask_8bit(*(first + i * 4 + 1))) << 16) |
(static_cast(mask_8bit(*(first + i * 4 + 2))) << 8) |
(static_cast(mask_8bit(*(first + i * 4 + 3))));
}
for (std::size_t i = 16; i < 64; ++i) {
w[i] = mask_32bit(ssig1(w[i - 2]) + w[i - 7] + ssig0(w[i - 15]) +
w[i - 16]);
}
word_t a = *message_digest;
word_t b = *(message_digest + 1);
word_t c = *(message_digest + 2);
word_t d = *(message_digest + 3);
word_t e = *(message_digest + 4);
word_t f = *(message_digest + 5);
word_t g = *(message_digest + 6);
word_t h = *(message_digest + 7);
for (std::size_t i = 0; i < 64; ++i) {
word_t temp1 = h + bsig1(e) + ch(e, f, g) + add_constant[i] + w[i];
word_t temp2 = bsig0(a) + maj(a, b, c);
h = g;
g = f;
f = e;
e = mask_32bit(d + temp1);
d = c;
c = b;
b = a;
a = mask_32bit(temp1 + temp2);
}
*message_digest += a;
*(message_digest + 1) += b;
*(message_digest + 2) += c;
*(message_digest + 3) += d;
*(message_digest + 4) += e;
*(message_digest + 5) += f;
*(message_digest + 6) += g;
*(message_digest + 7) += h;
for (std::size_t i = 0; i < 8; ++i) {
*(message_digest + i) = mask_32bit(*(message_digest + i));
}
}
} // namespace detail
template
void output_hex(InIter first, InIter last, std::ostream& os) {
os.setf(std::ios::hex, std::ios::basefield);
while (first != last) {
os.width(2);
os.fill('0');
os << static_cast(*first);
++first;
}
os.setf(std::ios::dec, std::ios::basefield);
}
template
void bytes_to_hex_string(InIter first, InIter last, std::string& hex_str) {
std::ostringstream oss;
output_hex(first, last, oss);
hex_str.assign(oss.str());
}
template
void bytes_to_hex_string(const InContainer& bytes, std::string& hex_str) {
bytes_to_hex_string(bytes.begin(), bytes.end(), hex_str);
}
template
std::string bytes_to_hex_string(InIter first, InIter last) {
std::string hex_str;
bytes_to_hex_string(first, last, hex_str);
return hex_str;
}
template
std::string bytes_to_hex_string(const InContainer& bytes) {
std::string hex_str;
bytes_to_hex_string(bytes, hex_str);
return hex_str;
}
class hash256_one_by_one {
public:
hash256_one_by_one() { init(); }
void init() {
buffer_.clear();
std::fill(data_length_digits_, data_length_digits_ + 4, 0);
std::copy(detail::initial_message_digest,
detail::initial_message_digest + 8, h_);
}
template
void process(RaIter first, RaIter last) {
add_to_data_length(std::distance(first, last));
std::copy(first, last, std::back_inserter(buffer_));
std::size_t i = 0;
for (; i + 64 <= buffer_.size(); i += 64) {
detail::hash256_block(h_, buffer_.begin() + i,
buffer_.begin() + i + 64);
}
buffer_.erase(buffer_.begin(), buffer_.begin() + i);
}
void finish() {
byte_t temp[64];
std::fill(temp, temp + 64, 0);
std::size_t remains = buffer_.size();
std::copy(buffer_.begin(), buffer_.end(), temp);
temp[remains] = 0x80;
if (remains > 55) {
std::fill(temp + remains + 1, temp + 64, 0);
detail::hash256_block(h_, temp, temp + 64);
std::fill(temp, temp + 64 - 4, 0);
} else {
std::fill(temp + remains + 1, temp + 64 - 4, 0);
}
write_data_bit_length(&(temp[56]));
detail::hash256_block(h_, temp, temp + 64);
}
template
void get_hash_bytes(OutIter first, OutIter last) const {
for (const word_t* iter = h_; iter != h_ + 8; ++iter) {
for (std::size_t i = 0; i < 4 && first != last; ++i) {
*(first++) = detail::mask_8bit(
static_cast((*iter >> (24 - 8 * i))));
}
}
}
private:
void add_to_data_length(word_t n) {
word_t carry = 0;
data_length_digits_[0] += n;
for (std::size_t i = 0; i < 4; ++i) {
data_length_digits_[i] += carry;
if (data_length_digits_[i] >= 65536u) {
carry = data_length_digits_[i] >> 16;
data_length_digits_[i] &= 65535u;
} else {
break;
}
}
}
void write_data_bit_length(byte_t* begin) {
word_t data_bit_length_digits[4];
std::copy(data_length_digits_, data_length_digits_ + 4,
data_bit_length_digits);
// convert byte length to bit length (multiply 8 or shift 3 times left)
word_t carry = 0;
for (std::size_t i = 0; i < 4; ++i) {
word_t before_val = data_bit_length_digits[i];
data_bit_length_digits[i] <<= 3;
data_bit_length_digits[i] |= carry;
data_bit_length_digits[i] &= 65535u;
carry = (before_val >> (16 - 3)) & 65535u;
}
// write data_bit_length
for (int i = 3; i >= 0; --i) {
(*begin++) = static_cast(data_bit_length_digits[i] >> 8);
(*begin++) = static_cast(data_bit_length_digits[i]);
}
}
std::vector buffer_;
word_t data_length_digits_[4]; // as 64bit integer (16bit x 4 integer)
word_t h_[8];
};
inline void get_hash_hex_string(const hash256_one_by_one& hasher,
std::string& hex_str) {
byte_t hash[32];
hasher.get_hash_bytes(hash, hash + 32);
return bytes_to_hex_string(hash, hash + 32, hex_str);
}
inline std::string get_hash_hex_string(const hash256_one_by_one& hasher) {
std::string hex_str;
get_hash_hex_string(hasher, hex_str);
return hex_str;
}
namespace impl {
template
void hash256_impl(RaIter first, RaIter last, OutIter first2, OutIter last2, int,
std::random_access_iterator_tag) {
hash256_one_by_one hasher;
// hasher.init();
hasher.process(first, last);
hasher.finish();
hasher.get_hash_bytes(first2, last2);
}
template
void hash256_impl(InputIter first, InputIter last, OutIter first2,
OutIter last2, int buffer_size, std::input_iterator_tag) {
std::vector buffer(buffer_size);
hash256_one_by_one hasher;
// hasher.init();
while (first != last) {
int size = buffer_size;
for (int i = 0; i != buffer_size; ++i, ++first) {
if (first == last) {
size = i;
break;
}
buffer[i] = *first;
}
hasher.process(buffer.begin(), buffer.begin() + size);
}
hasher.finish();
hasher.get_hash_bytes(first2, last2);
}
}
template
void hash256(InIter first, InIter last, OutIter first2, OutIter last2,
int buffer_size = PICOSHA2_BUFFER_SIZE_FOR_INPUT_ITERATOR) {
picosha2::impl::hash256_impl(
first, last, first2, last2, buffer_size,
typename std::iterator_traits::iterator_category());
}
template
void hash256(InIter first, InIter last, OutContainer& dst) {
hash256(first, last, dst.begin(), dst.end());
}
template
void hash256(const InContainer& src, OutIter first, OutIter last) {
hash256(src.begin(), src.end(), first, last);
}
template
void hash256(const InContainer& src, OutContainer& dst) {
hash256(src.begin(), src.end(), dst.begin(), dst.end());
}
template
void hash256_hex_string(InIter first, InIter last, std::string& hex_str) {
byte_t hashed[32];
hash256(first, last, hashed, hashed + 32);
std::ostringstream oss;
output_hex(hashed, hashed + 32, oss);
hex_str.assign(oss.str());
}
template
std::string hash256_hex_string(InIter first, InIter last) {
std::string hex_str;
hash256_hex_string(first, last, hex_str);
return hex_str;
}
inline void hash256_hex_string(const std::string& src, std::string& hex_str) {
hash256_hex_string(src.begin(), src.end(), hex_str);
}
template
void hash256_hex_string(const InContainer& src, std::string& hex_str) {
hash256_hex_string(src.begin(), src.end(), hex_str);
}
template
std::string hash256_hex_string(const InContainer& src) {
return hash256_hex_string(src.begin(), src.end());
}
} // namespace picosha2
#endif // PICOSHA2_H