使用PHP转换比特币私钥，但错误的SHA256？

2 回答

• 3

  这是因为您正在散列文字字符串

  "800C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D"
  

  这不是需要发生的事情 . 这是一串字节 . 它采用HEX格式，只是为了让查看更容易 . 实际上，这代表二进制字符串 . 这就是你需要哈希的东西 .

  hex2bin是你的朋友 .

  <?php
  $hex = '800C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D';
  echo hash('sha256', hex2bin($hex));
  

  演示：https://eval.in/69440

  另一个例子：

  <?php
  $key = '0C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D';
  $binKey = hex2bin($key);
  
  $binKey = hex2bin(80).$binKey;
  
  echo hash('sha256', $binKey);
  

  演示：https://eval.in/69443

  回复于 2024-04-28T00:42:41+08:00
• 0

  这是工作的PHP代码示例：

  <?php
  
  //EXAMPLE INPUT: 0C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D
  //EXAMPLE OUTPUT: 5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ
  //see https://en.bitcoin.it/wiki/Wallet_import_format for more info
  
  function decodeHex($hex)
  {
      $hex = strtoupper($hex);
      $chars = '0123456789ABCDEF';
      $return = '0';
      for($i = 0; $i < strlen($hex); $i++)
      {
          $current = (string)strpos($chars, $hex[$i]);
          $return = (string)bcmul($return, '16', 0);
          $return = (string)bcadd($return, $current, 0);
      }
      return $return;
  }
  
  function encodeBase58($hex)
  {
      $orighex = $hex;
      $chars = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz';
      $hex = decodeHex($hex);
      $return = '';
      while(bccomp($hex, 0) == 1)
      {
          $dv = (string)bcdiv($hex, '58', 0);
          $rem = (integer)bcmod($hex, '58');
          $hex = $dv;
          $return = $return.$chars[$rem];
      }
      $return = strrev($return);
  
      //leading zeros
      for($i = 0; $i < strlen($orighex) && substr($orighex, $i, 2) == '00'; $i += 2)
      {
          $return = '1' . $return;
      }
  
      return $return;
  }
  
  if(!isset($_SERVER['argv'][1]))
  {
      exit("Usage: php convert_bitcoin_private_key_to_wif_format.php private_key\n");
  }
  
  $privateKey = $_SERVER['argv'][1];
  
  //add a 0x80 byte in front of it 
  $buffer = '80' . $privateKey; 
  $extendedKey = $buffer;
  
  //perform SHA-256 hash on the extended key 
  $buffer = strtoupper(hash('sha256', hex2bin($buffer)));
  
  //perform SHA-256 hash on result of SHA-256 hash 
  $buffer = strtoupper(hash('sha256', hex2bin($buffer)));
  
  //take the first 4 bytes of the second SHA-256 hash, this is the checksum 
  $checksum = substr($buffer, 0, 8);
  
  //add the checksum at the end of the extended key
  $buffer = $extendedKey . $checksum;
  
  //convert the result from a byte string into a base58 string
  $buffer = encodeBase58($buffer);
  
  echo($buffer . "\n");
  
  ?>
  

  回复于 2024-04-28T00:42:41+08:00