Ecosyste.ms: Awesome
An open API service indexing awesome lists of open source software.
https://github.com/wandvvs/blockchain
Blockchain implementation: Mining (POW), Serialization, Transactions and sign them, Merkle Tree
https://github.com/wandvvs/blockchain
bitcoin blockchain blockchain-platform blockchain-technology collage-project cplusplus cpp cpp17 cpp20 cpp23 crypto cryptography educational-project merkle merkle-tree merkletree mit-license stl stl-algorithms stl-containers
Last synced: about 2 months ago
JSON representation
Blockchain implementation: Mining (POW), Serialization, Transactions and sign them, Merkle Tree
- Host: GitHub
- URL: https://github.com/wandvvs/blockchain
- Owner: wandvvs
- License: mit
- Created: 2024-01-10T17:39:27.000Z (12 months ago)
- Default Branch: main
- Last Pushed: 2024-01-29T17:53:10.000Z (11 months ago)
- Last Synced: 2024-05-10T19:54:59.874Z (8 months ago)
- Topics: bitcoin, blockchain, blockchain-platform, blockchain-technology, collage-project, cplusplus, cpp, cpp17, cpp20, cpp23, crypto, cryptography, educational-project, merkle, merkle-tree, merkletree, mit-license, stl, stl-algorithms, stl-containers
- Language: C++
- Homepage:
- Size: 2.02 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Blockchain
Blockchain implementation with C++20 and STL, all test were performed on Arch Linux.
## Was done:
- [x] Proof Of Work (Mining)
- [x] Serialization
- [x] Transactions
- [x] Signing transactions
- [x] More type for hashing
- [x] Merkle trees
- [ ] P2P
- [ ] Consensus
## **Dependencies:**
```bash
sudo pacman -S openssl
sudo pacman -S nlohmann-json
```
## **Build:**
```bash
cd build
cmake ..
make
./run
```
## Transaction signing example:
```cpp
#include "../includes/blockchain.h"
// using namespace crypto::rsa;
int main()
{
Blockchain chain;
RSA* miner_private_key = crypto::rsa::generate_private_key();
RSA* sender_private_key = crypto::rsa::generate_private_key();
RSA* sender_public_key = crypto::rsa::generate_public_key(sender_private_key);
RSA* receiver_private_key = crypto::rsa::generate_private_key();
RSA* receiver_public_key = crypto::rsa::generate_public_key(receiver_private_key);
Transaction test {"Sender", "Receiver", 250.5};
test.sign(sender_private_key);
if(test.verify(sender_public_key))
{
chain.create_transaction(test, sender_private_key);
chain.mine_pending_transactions("wand", miner_private_key);
std::cout << "Sender balance: " << chain.get_balance("Sender") << std::endl;
std::cout << "Receiver balance: " << chain.get_balance("Receiver") << std::endl;
}
else
{
std::cerr << "Failed to sign transaction" << std::endl;
}
chain.mine_pending_transactions("wand", miner_private_key);
std::cout << "Miner balance: " << chain.get_balance("wand") << std::endl;
chain.get_blocks_data();
std::cout << (chain.is_valid() ? "Chain are valid" : "Chain aren`t valid") << std::endl;
return 0;
}
```
**Output:**
```
Sender balance: -250.5
Receiver balance: 250.5
Miner balance: 100
Index: 0
Nonce: 0
Hash: Genesis Block
Previous hash: Genesis Block
Timestamp: 1408
Transactions count: 0
Merkle root hash:
Index: 1
Nonce: 852
Hash: 000a90e11be60a607bd75cbb0f4ce049493565edec85ec17896b80f1cd1be104
Previous hash: Genesis Block
Timestamp: 1346666548
Transactions count: 1
Merkle root hash: ce0356d39a072e660598e59bca7c511d2ca852b15c6e1ca4c0955e2f52382273
Index: 2
Nonce: 1640
Hash: 000d5f867849eeea0f4a8f175c13f2d95c26f134d0d4d43fff275feb3df009b8
Previous hash: 000a90e11be60a607bd75cbb0f4ce049493565edec85ec17896b80f1cd1be104
Timestamp: 1346666556
Transactions count: 1
Merkle root hash: 6f5430c287309c1ac847de0885835e7d5d32c1eff9f77084978896a6e538fc6a
Chain are valid
```