Question

我正在学习C，我有ome问题。

首先，我使用库gmp，我需要将mpzt转换为unsigned char数组。

我已经在文档上查找但我找不到任何东西。也许使用mpz_get_str，但我不知道如何。

此外，我必须将2个函数从GoLang转换为C但我遇到了一些麻烦

这是两个GoLang功能：

    // paddedAppend appends the src byte slice to dst, returning the new slice.
// If the length of the source is smaller than the passed size, leading zero
// bytes are appended to the dst slice before appending src.
func paddedAppend(size uint, dst, src []byte) []byte {
  for i := 0; i < int(size)-len(src); i++ {
    dst = append(dst, 0)
  }
  return append(dst, src...)
}

func isOdd(a *big.Int) bool {
  return a.Bit(0) == 1
}

// SerializeUncompressed serializes a public key in a 65-byte uncompressed format.
func SerializeUncompressed(x *big.Int, y *big.Int) []byte {
  b := make([]byte, 0, PubKeyBytesLenUncompressed)
  b = append(b, pubkeyUncompressed)
  b = paddedAppend(32, b, x.Bytes())
  return paddedAppend(32, b, y.Bytes())
}

// SerializeCompressed serializes a public key in a 33-byte compressed format.
func SerializeCompressed(x *big.Int, y *big.Int) []byte {
  b := make([]byte, 0, PubKeyBytesLenCompressed)
  format := pubkeyCompressed
  if isOdd(y) {
    format |= 0x1
  }
  b = append(b, format)
  return paddedAppend(32, b, x.Bytes())
}

我们将不胜感激！ Thanx提前

C help - 将mpz转换为unsigned char数组

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