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  1. <?php
  2. $iv  = str_repeat("\0", 16);
  3. $key = str_repeat("\0", 16);
  4. $picc= hex2bin("CACDEC6C5455EE52BB1DA40470963113");
  5. $picc= "01000000000000000100";
  6. //      12345678901234567890
  7. // $cipher = new AES\CBC($key, $iv);
  8. // $decrypted_data = $cipher->decrypt(hex2bin($encrypted_data));
  9.  
  10. $counter = hexdec(substr($picc, 0, 4));
  11.  
  12. echo $counter;
  13.  
  14. ?>
Success #stdin #stdout 0.02s 25696KB
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https://ideone.com/LmZmA2
language:
PHP (php 7.3.5)
created:
2 days ago
visibility:
public

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