bitcoin:压缩公钥与未压缩公钥

# python code
Pcurve = 2**256 - 2**32 - 2**9 - 2**8 - 2**7 - 2**6 - 2**4 -1 
#有限域
x = 0xd061e9c5891f579fd548cfd22ff29f5c642714cc7e7a9215f0071ef5a5723f69
y = 0x1757b28e31be71f09f24673eed52348e58d53bcfd26f4d96ec6bf1489eab429d
x_res = x**3+7
y_res = y**2
(x_res%Pcurve) == (y_res%Pcurve)

def pow_mod(x, y, z):
    "Calculate (x ** y) % z efficiently"
    number = 1
    while y:
        if y & 1:
            number = number * x % z
        y >>= 1
        x = x * x % z
    return number
def get_uncompressed_key(compressed_key):
    Pcurve = 2**256 - 2**32 - 2**9 - 2**8 - 2**7 - 2**6 - 2**4 -1
    y_parity = int(compressed_key[:2]) - 2
    x = int(compressed_key[2:], 16)
    a = (pow_mod(x, 3, Pcurve) + 7) % Pcurve
    y = pow_mod(a, (Pcurve+1)//4, Pcurve)
    if y % 2 != y_parity:
        y = -y % Pcurve
    uncompressed_key = '04{:x}{:x}'.format(x, y)
    print(uncompressed_key)
get_uncompressed_key("03d061e9c5891f579fd548cfd22ff29f5c642714cc7e7a9215f0071ef5a5723f69")

var compressedKey = "03d061e9c5891f579fd548cfd22ff29f5c642714cc7e7a9215f0071ef5a5723f69";
var hex = compressedKey.replace(/^0x/, "");
var b = bitcoinjs.Buffer.Buffer.from(hex, "hex");
var keypair = bitcoinjs.bitcoin.ECPair.fromPublicKeyBuffer(b);
keypair.getPublicKeyBuffer().toString("hex");
var o = { compressed: false };
var displayKey = new bitcoinjs.bitcoin.ECPair(null, keypair.__Q, o);
console.log(displayKey.getPublicKeyBuffer().toString("hex"));

const { PublicKey } = require('bitcore-lib-p256')
  
const uncompress = key => {
  if (!key.compressed) {
    throw new Error('Publick key is not compressed.')
  }
  const x = key.point.getX()
  const y = key.point.getY()
  const xbuf = x.toBuffer({ size: 32,})
  
  const ybuf = y.toBuffer({ size: 32,})
  return Buffer.concat([Buffer.from([0x04]), xbuf, ybuf])
}
  
const pubKey = '023e3df0d294c19ed29a3e83a21648f7fc6ef9c1363c7dffc7b3650e1f08d98032'
const pubKeyObj = PublicKey.fromString(pubKey)
const rs = uncompress(pubKeyObj).toString('hex')
console.log('rs', rs)

#############未压缩公钥生成的地址#############
14xfJr1DArtYR156XBs28FoYk6sQqirT2s
35egEPVeimCvWAmXeHXcYtAUtdA8RtsNUY
mjUcbu6BytKoC7YiEkqPxB1sc6U7nnjFse
#############压缩公钥生成的地址#############
1ASfqPzBTfPSBA9DWdHYYNk4qM5NoGNtzL
3B8gkwUd1ZhpGKqedix8y16zysN6QWqQxS
mpxd8T5AGgpgxGcqECFvNHxPhLg5of8Sh3