Why a flip a bin before hashing in this script?











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From How can I make this PHP merkle root script recursive?



function binFlipByteOrder($string) {

    return implode('', array_reverse(str_split($string, 1)));

}


Why a flip?






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    up vote
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    down vote

    favorite












    From How can I make this PHP merkle root script recursive?



    function binFlipByteOrder($string) {
    
    return implode('', array_reverse(str_split($string, 1)));
    
}


    Why a flip?






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    New contributor




    Nicolas Cantu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      up vote
      2
      down vote

      favorite









      up vote
      2
      down vote

      favorite











      From How can I make this PHP merkle root script recursive?



      function binFlipByteOrder($string) {
      
    return implode('', array_reverse(str_split($string, 1)));
      
}


      Why a flip?






      blockchain php







      share|improve this question









      New contributor




      Nicolas Cantu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      From How can I make this PHP merkle root script recursive?



      function binFlipByteOrder($string) {
      
    return implode('', array_reverse(str_split($string, 1)));
      
}


      Why a flip?






      blockchain php




      blockchain php






      share|improve this question









      New contributor




      Nicolas Cantu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question









      New contributor




      Nicolas Cantu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question








      edited 4 hours ago









      Glorfindel

      2381412




      2381412






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      asked 13 hours ago









      Nicolas Cantu

      134




      134




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      New contributor





      Nicolas Cantu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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          1 Answer
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          Hashes are big endian by standard, and most computers use little endian, so it's probably just for convenience. See Why does the Bitcoin protocol use the little-endian notation?






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          • Ok thanks you! (I suspected the Lilliputians..)
            – Nicolas Cantu
            13 hours ago












          • haha they are alive and well in Bitcoin... :)
            – JBaczuk
            13 hours ago










          • Of course it's a little big part of Internet (Cohen) and a community story :) So they are well in Bitcoin :)
            – Nicolas Cantu
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          1 Answer
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          1 Answer
          1






          active

          oldest

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          active

          oldest

          votes






          active

          oldest

          votes








          up vote
          3
          down vote



          accepted










          Hashes are big endian by standard, and most computers use little endian, so it's probably just for convenience. See Why does the Bitcoin protocol use the little-endian notation?






          share|improve this answer





















          • Ok thanks you! (I suspected the Lilliputians..)
            – Nicolas Cantu
            13 hours ago












          • haha they are alive and well in Bitcoin... :)
            – JBaczuk
            13 hours ago










          • Of course it's a little big part of Internet (Cohen) and a community story :) So they are well in Bitcoin :)
            – Nicolas Cantu
            4 hours ago















          up vote
          3
          down vote



          accepted










          Hashes are big endian by standard, and most computers use little endian, so it's probably just for convenience. See Why does the Bitcoin protocol use the little-endian notation?






          share|improve this answer





















          • Ok thanks you! (I suspected the Lilliputians..)
            – Nicolas Cantu
            13 hours ago












          • haha they are alive and well in Bitcoin... :)
            – JBaczuk
            13 hours ago










          • Of course it's a little big part of Internet (Cohen) and a community story :) So they are well in Bitcoin :)
            – Nicolas Cantu
            4 hours ago













          up vote
          3
          down vote



          accepted







          up vote
          3
          down vote



          accepted






          Hashes are big endian by standard, and most computers use little endian, so it's probably just for convenience. See Why does the Bitcoin protocol use the little-endian notation?






          share|improve this answer












          Hashes are big endian by standard, and most computers use little endian, so it's probably just for convenience. See Why does the Bitcoin protocol use the little-endian notation?







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 13 hours ago









          JBaczuk

          3,5741321




          3,5741321












          • Ok thanks you! (I suspected the Lilliputians..)
            – Nicolas Cantu
            13 hours ago












          • haha they are alive and well in Bitcoin... :)
            – JBaczuk
            13 hours ago










          • Of course it's a little big part of Internet (Cohen) and a community story :) So they are well in Bitcoin :)
            – Nicolas Cantu
            4 hours ago


















          • Ok thanks you! (I suspected the Lilliputians..)
            – Nicolas Cantu
            13 hours ago












          • haha they are alive and well in Bitcoin... :)
            – JBaczuk
            13 hours ago










          • Of course it's a little big part of Internet (Cohen) and a community story :) So they are well in Bitcoin :)
            – Nicolas Cantu
            4 hours ago
















          Ok thanks you! (I suspected the Lilliputians..)
          – Nicolas Cantu
          13 hours ago






          Ok thanks you! (I suspected the Lilliputians..)
          – Nicolas Cantu
          13 hours ago














          haha they are alive and well in Bitcoin... :)
          – JBaczuk
          13 hours ago




          haha they are alive and well in Bitcoin... :)
          – JBaczuk
          13 hours ago












          Of course it's a little big part of Internet (Cohen) and a community story :) So they are well in Bitcoin :)
          – Nicolas Cantu
          4 hours ago




          Of course it's a little big part of Internet (Cohen) and a community story :) So they are well in Bitcoin :)
          – Nicolas Cantu
          4 hours ago










          Nicolas Cantu is a new contributor. Be nice, and check out our Code of Conduct.










           

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