key-to-address-ecc-example.py

from __future__ import print_function
import bitcoin

# 随机生成一个私钥
valid_private_key = False
while not valid_private_key:
    private_key = bitcoin.random_key()
    decoded_private_key = bitcoin.decode_privkey(private_key, 'hex')
    valid_private_key = 0 < decoded_private_key < bitcoin.N

print("Private Key (hex) is: ", private_key)
print("Private Key (decimal) is: ", decoded_private_key)

# 将私钥转换为WIF格式
wif_encoded_private_key = bitcoin.encode_privkey(decoded_private_key, 'wif')
print("Private Key (WIF) is: ", wif_encoded_private_key)

# 添加"01"后缀，表示压缩的私钥
compressed_private_key = private_key + '01'
print("Private Key Compressed (hex) is: ", compressed_private_key)

# 生成 WIF-compressed
wif_compressed_private_key = bitcoin.encode_privkey(
    bitcoin.decode_privkey(compressed_private_key, 'hex'), 'wif_compressed')
print("Private Key (WIF-Compressed) is: ", wif_compressed_private_key)

# 乘以EC生成点G，生成公钥
public_key = bitcoin.fast_multiply(bitcoin.G, decoded_private_key)
print("Public Key (x,y) coordinates is:", public_key)

# 编码成十六进制，以04开头
hex_encoded_public_key = bitcoin.encode_pubkey(public_key, 'hex')
print("Public Key (hex) is:", hex_encoded_public_key)

# 压缩公钥，根据y是偶数还是奇数来调整前缀
(public_key_x, public_key_y) = public_key
compressed_prefix = '02' if (public_key_y % 2) == 0 else '03'
hex_compressed_public_key = compressed_prefix + (bitcoin.encode(public_key_x, 16).zfill(64))
print("Compressed Public Key (hex) is:", hex_compressed_public_key)

# 从公钥生成比特币地址
print("Bitcoin Address (b58check) is:", bitcoin.pubkey_to_address(public_key))

# 从压缩的公钥生成压缩的比特币地址
print("Compressed Bitcoin Address (b58check) is:",
      bitcoin.pubkey_to_address(hex_compressed_public_key))