We instead provide an example for bech32 addresses, which are now the preferred format.develop
David A. Harding
1 year ago
parent
74c144bbf4
commit
132094b670
@ -1,48 +0,0 @@
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#include <bitcoin/bitcoin.hpp>
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int main()
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{
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// Private secret key string as base16
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bc::ec_secret decoded;
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bc::decode_base16(decoded,
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"038109007313a5807b2eccc082c8c3fbb988a973cacf1a7df9ce725c31b14776");
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bc::wallet::ec_private secret(
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decoded, bc::wallet::ec_private::mainnet_p2kh);
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// Get public key.
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bc::wallet::ec_public public_key(secret);
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std::cout << "Public key: " << public_key.encoded() << std::endl;
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// Create Bitcoin address.
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// Normally you can use:
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// bc::wallet::payment_address payaddr =
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// public_key.to_payment_address(
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// bc::wallet::ec_public::mainnet_p2kh);
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// const std::string address = payaddr.encoded();
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// Compute hash of public key for P2PKH address.
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bc::data_chunk public_key_data;
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public_key.to_data(public_key_data);
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const auto hash = bc::bitcoin_short_hash(public_key_data);
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bc::data_chunk unencoded_address;
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// Reserve 25 bytes
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// [ version:1 ]
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// [ hash:20 ]
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// [ checksum:4 ]
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unencoded_address.reserve(25);
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// Version byte, 0 is normal BTC address (P2PKH).
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unencoded_address.push_back(0);
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// Hash data
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bc::extend_data(unencoded_address, hash);
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// Checksum is computed by hashing data, and adding 4 bytes from hash.
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bc::append_checksum(unencoded_address);
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// Finally we must encode the result in Bitcoin's base58 encoding.
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assert(unencoded_address.size() == 25);
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const std::string address = bc::encode_base58(unencoded_address);
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std::cout << "Address: " << address << std::endl;
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return 0;
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}
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@ -1,59 +0,0 @@
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import ecdsa
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import os
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# secp256k1, http://www.oid-info.com/get/1.3.132.0.10
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_p = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F
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_r = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141
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_b = 0x0000000000000000000000000000000000000000000000000000000000000007
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_a = 0x0000000000000000000000000000000000000000000000000000000000000000
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_Gx = 0x79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798
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_Gy = 0x483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8
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curve_secp256k1 = ecdsa.ellipticcurve.CurveFp(_p, _a, _b)
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generator_secp256k1 = ecdsa.ellipticcurve.Point(curve_secp256k1, _Gx, _Gy, _r)
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oid_secp256k1 = (1, 3, 132, 0, 10)
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SECP256k1 = ecdsa.curves.Curve("SECP256k1", curve_secp256k1,
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generator_secp256k1, oid_secp256k1)
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ec_order = _r
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curve = curve_secp256k1
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generator = generator_secp256k1
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def random_secret():
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convert_to_int = lambda array: int("".join(array).encode("hex"), 16)
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# Collect 256 bits of random data from the OS's cryptographically secure
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# random number generator
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byte_array = os.urandom(32)
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return convert_to_int(byte_array)
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def get_point_pubkey(point):
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if (point.y() % 2) == 1:
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key = '03' + '%064x' % point.x()
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else:
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key = '02' + '%064x' % point.x()
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return key.decode('hex')
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def get_point_pubkey_uncompressed(point):
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key = ('04' +
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'%064x' % point.x() +
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'%064x' % point.y())
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return key.decode('hex')
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# Generate a new private key.
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secret = random_secret()
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print("Secret: ", secret)
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# Get the public key point.
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point = secret * generator
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print("EC point:", point)
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print("BTC public key:", get_point_pubkey(point).encode("hex"))
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# Given the point (x, y) we can create the object using:
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point1 = ecdsa.ellipticcurve.Point(curve, point.x(), point.y(), ec_order)
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assert(point1 == point)
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@ -1,46 +0,0 @@
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from __future__ import print_function
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import bitcoin
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# Generate a random private key
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valid_private_key = False
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while not valid_private_key:
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private_key = bitcoin.random_key()
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decoded_private_key = bitcoin.decode_privkey(private_key, 'hex')
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valid_private_key = 0 < decoded_private_key < bitcoin.N
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print("Private Key (hex) is: ", private_key)
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print("Private Key (decimal) is: ", decoded_private_key)
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# Convert private key to WIF format
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wif_encoded_private_key = bitcoin.encode_privkey(decoded_private_key, 'wif')
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print("Private Key (WIF) is: ", wif_encoded_private_key)
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# Add suffix "01" to indicate a compressed private key
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compressed_private_key = private_key + '01'
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print("Private Key Compressed (hex) is: ", compressed_private_key)
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# Generate a WIF format from the compressed private key (WIF-compressed)
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wif_compressed_private_key = bitcoin.encode_privkey(
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bitcoin.decode_privkey(compressed_private_key, 'hex'), 'wif_compressed')
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print("Private Key (WIF-Compressed) is: ", wif_compressed_private_key)
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# Multiply the EC generator point G with the private key to get a public key point
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public_key = bitcoin.fast_multiply(bitcoin.G, decoded_private_key)
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print("Public Key (x,y) coordinates is:", public_key)
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# Encode as hex, prefix 04
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hex_encoded_public_key = bitcoin.encode_pubkey(public_key, 'hex')
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print("Public Key (hex) is:", hex_encoded_public_key)
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# Compress public key, adjust prefix depending on whether y is even or odd
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(public_key_x, public_key_y) = public_key
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compressed_prefix = '02' if (public_key_y % 2) == 0 else '03'
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hex_compressed_public_key = compressed_prefix + (bitcoin.encode(public_key_x, 16).zfill(64))
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print("Compressed Public Key (hex) is:", hex_compressed_public_key)
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# Generate Bitcoin address from public key
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print("Bitcoin Address (b58check) is:", bitcoin.pubkey_to_address(public_key))
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# Generate compressed Bitcoin address from compressed public key
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print("Compressed Bitcoin Address (b58check) is:",
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bitcoin.pubkey_to_address(hex_compressed_public_key))
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