narodnik

#include <bitcoin/bitcoin.hpp>
using namespace bc;

class ec_scalar
{
public:
    ec_scalar();
    ec_scalar(uint64_t value);

    void reset();

narodnik

'''
Pure Python Borromean Ring Signatures 
DEPENDS ON: pip install ecdsa
WARNING: THIS IS A PEDAGOGICAL IMPLEMENTATION.
         PERFORMANCE IS HORRIBLE AND NON-CONSTANT.
         CORNER CASES ARE NOT PROPERLY CHECKED.
         FOR THE LOVE OF GOD USE THE CODE FROM THE ELEMENTS PROJECT.
         https://gist.github.com/badmofo/2d6e66630e4a6748edb7
'''
from hashlib import sha256

narodnik

int main()
{
    // Generate new random secret keys
    bc::secret_list secrets;
    for (size_t i = 0; i < 8; ++i)
        secrets.push_back(new_key());

    // Create two rings from the first 4 and last 4 keys
    auto ring0 = extract_public_keys(
        secrets.begin(), secrets.begin() + 4);

narodnik

typedef std::vector<point_list> key_rings;
typedef std::vector<ec_secret> secret_list;

typedef std::vector<secret_list> s_values_type;

struct ring_signature
{
    ec_secret e;
    s_value_type s;
};