Chat2Z,
Write a program in C++.
The user enters the number n and the program generates a random private key, public key, transparent t-address, private z-address and unified address (UA) address n times and prints to the console.
Add real algorithm to generate Zcash public key.
Add real algorithm to generate Zcash t-address.
Add real algorithm to generate Zcash sapling z-address.
Add real algorithm to generate Zcash unified address (UA).
https://odysee.com/@topcrypto:d/Chat2Z:4
Code
`
// Compile with:
// g++ -O2 -I secp256k1-0.3.0/src/ -I secp256k1-0.3.0/ -lgmp -lcrypto -lsecp256k1 -L./zcash/src/rust/include generate_zcash_address.cpp -o generate_zcash_address
// g++ -O2 -I./secp256k1-zkp/src/ -I./secp256k1-zkp/ -lcrypto -lsecp256k1 -lm -lgmp -L./secp256k1-zkp/.libs -I./zcash/src/rust/include generate_zcash_address.cpp -o generate_zcash_address
#include <iostream>
#include <vector>
#include <algorithm>
#include <random>
#include <sstream>
#include <openssl/rand.h>
#include <openssl/evp.h>
#include <openssl/sha.h>
#include <secp256k1.h>
#include "librustzcash.h"
#include <cstring>
using namespace std;
// Function to generate a random private key
vector<unsigned char> generatePrivateKey() {
vector<unsigned char> privateKey(32);
RAND_bytes(privateKey.data(), privateKey.size());
return privateKey;
}
// Function to generate a public key from the private key
std::vector<unsigned char> generatePublicKey(const std::vector<unsigned char>& privateKey) {
secp256k1_context* ctx = secp256k1_context_create(SECP256K1_CONTEXT_VERIFY | SECP256K1_CONTEXT_SIGN);
secp256k1_pubkey pubkey;
if (secp256k1_ec_pubkey_create(ctx, &pubkey, privateKey.data()) != 1) {
// Failed to create public key
secp256k1_context_destroy(ctx);
return {};
}
std::vector<unsigned char> publicKey(33);
size_t publicKeySize = publicKey.size();
if (secp256k1_ec_pubkey_serialize(ctx, publicKey.data(), &publicKeySize, &pubkey, SECP256K1_EC_COMPRESSED) != 1) {
// Failed to serialize public key
secp256k1_context_destroy(ctx);
return {};
}
secp256k1_context_destroy(ctx);
return publicKey;
}
// EncodeBase58
std::string EncodeBase58(const unsigned char* data, size_t size) {
static const char* base58Chars = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
// Count leading zerossize_t leadingZeros = 0;while (leadingZeros < size && data[leadingZeros] == 0) { ++leadingZeros;} // Determine the number of leading '1' charactersstd::string leadingOnes(leadingZeros, '1'); // Reverse the data arraystd::vector<unsigned char> reversedData(data, data + size);std::reverse(reversedData.begin(), reversedData.end()); // Allocate enough space for the encoded stringsize_t bufferSize = (size - leadingZeros) * 138 / 100 + 1; // Approximate sizestd::vector<char> buffer(bufferSize, '1'); // Perform base58 encodingfor (size_t i = leadingZeros; i < size; ++i) { unsigned int carry = reversedData[i]; for (size_t j = 0; j < buffer.size(); ++j) { carry += buffer[j] * 256; buffer[j] = carry % 58; carry /= 58; }} // Skip leading zeros in the encoded stringsize_t skipLeadingZeros = 0;while (skipLeadingZeros < buffer.size() && buffer[skipLeadingZeros] == 0) { ++skipLeadingZeros;} // Construct the final base58 encoded stringstd::string encodedString = leadingOnes;encodedString.reserve(leadingOnes.size() + buffer.size() - skipLeadingZeros);for (size_t i = skipLeadingZeros; i < buffer.size(); ++i) { encodedString += base58Chars[buffer[i]];} return encodedString;}
// Function to generate a transparent t-address from the public key
std::string generateTAddress(const std::vector<unsigned char>& publicKey) {
// Step 1: Perform SHA-256 hash of the public key
unsigned char sha256Hash[SHA256_DIGEST_LENGTH];
SHA256(publicKey.data(), publicKey.size(), sha256Hash);
// Step 2: Perform RIPEMD-160 hash of the SHA-256 hashunsigned char ripeMD160Hash[20]; // RIPEMD-160 hash length is 20 bytesEVP_MD_CTX* mdctx = EVP_MD_CTX_new();EVP_DigestInit_ex(mdctx, EVP_ripemd160(), nullptr);EVP_DigestUpdate(mdctx, sha256Hash, SHA256_DIGEST_LENGTH);EVP_DigestFinal_ex(mdctx, ripeMD160Hash, nullptr);EVP_MD_CTX_free(mdctx); // Step 3: Prepend version byte and convert to base58std::vector<unsigned char> addressBytes;addressBytes.push_back(0x1C); // Version byte for mainnetaddressBytes.insert(addressBytes.end(), ripeMD160Hash, ripeMD160Hash + 20); // Step 4: Perform double SHA-256 hash of the address bytesunsigned char doubleSHA256Hash1[SHA256_DIGEST_LENGTH];SHA256(addressBytes.data(), addressBytes.size(), doubleSHA256Hash1);unsigned char doubleSHA256Hash2[SHA256_DIGEST_LENGTH];SHA256(doubleSHA256Hash1, SHA256_DIGEST_LENGTH, doubleSHA256Hash2); // Step 5: Append the first 4 bytes of the double SHA-256 hash as a checksumstd::vector<unsigned char> addressWithChecksum(addressBytes);addressWithChecksum.insert(addressWithChecksum.end(), doubleSHA256Hash2, doubleSHA256Hash2 + 4); // Step 6: Convert the address bytes with checksum to Base58 encodingstd::string tAddress = EncodeBase58(addressWithChecksum.data(), addressWithChecksum.size()); return tAddress;}
std::string generateZAddress(const std::vector<unsigned char>& publicKey) {
// Step 1: Perform SHA-256 hash of the public key
unsigned char sha256Hash[SHA256_DIGEST_LENGTH];
SHA256(publicKey.data(), publicKey.size(), sha256Hash);
// Step 2: Perform RIPEMD-160 hash of the SHA-256 hash using EVPunsigned char ripeMD160Hash[EVP_MAX_MD_SIZE];unsigned int ripeMD160HashLen;EVP_MD_CTX* mdctx = EVP_MD_CTX_new();EVP_DigestInit_ex(mdctx, EVP_ripemd160(), nullptr);EVP_DigestUpdate(mdctx, sha256Hash, SHA256_DIGEST_LENGTH);EVP_DigestFinal_ex(mdctx, ripeMD160Hash, &ripeMD160HashLen);EVP_MD_CTX_free(mdctx); // Step 3: Prepend version bytestd::vector<unsigned char> addressBytes;addressBytes.push_back(0xB8); // Version byte for sapling z-address // Step 4: Append the ripeMD160HashaddressBytes.insert(addressBytes.end(), ripeMD160Hash, ripeMD160Hash + ripeMD160HashLen); // Step 5: Perform double SHA-256 hash of the address bytesunsigned char doubleSHA256Hash1[SHA256_DIGEST_LENGTH];SHA256(addressBytes.data(), addressBytes.size(), doubleSHA256Hash1);unsigned char doubleSHA256Hash2[SHA256_DIGEST_LENGTH];SHA256(doubleSHA256Hash1, SHA256_DIGEST_LENGTH, doubleSHA256Hash2); // Step 6: Append the first 4 bytes of the double SHA-256 hash as a checksumstd::vector<unsigned char> addressWithChecksum(addressBytes);addressWithChecksum.insert(addressWithChecksum.end(), doubleSHA256Hash2, doubleSHA256Hash2 + 4); // Step 7: Convert the address bytes with checksum to Base58 encodingstd::string zAddress = EncodeBase58(addressWithChecksum.data(), addressWithChecksum.size()); return zAddress;}
// Function to generate a unified address (UA)
std::string generateUnifiedAddress(const std::vector<unsigned char>& publicKey) {
std::string tAddress = generateTAddress(publicKey);
std::string zAddress = generateZAddress(publicKey);
return tAddress + zAddress.substr(2);
}
int main() {
int n;
cout << "Enter the number of times to generate the addresses: ";
cin >> n;
cout << endl;
for (int i = 0; i < n; i++) {
// Generate a random private key
vector<unsigned char> privateKey = generatePrivateKey();
string sPrivateKey = EncodeBase58(privateKey.data(), privateKey.size());
// Generate the corresponding public key vector<unsigned char> publicKey = generatePublicKey(privateKey); string sPublicKey = EncodeBase58(publicKey.data(), publicKey.size()); // Generate the transparent t-address string tAddress = generateTAddress(publicKey); // Generate the sapling z-address string zAddress = generateZAddress(privateKey); string unifiedAddress = generateUnifiedAddress(privateKey); // Print the results cout << "Private Key: " << sPrivateKey << endl; cout << "Public Key: " << sPublicKey << endl; cout << "Transparent t-address: " << tAddress << endl; cout << "Private z-address: " << zAddress << endl; cout << "Unified Address (UA): " << unifiedAddress << endl << endl;}return 0;}
`