Generating random numbers in solidity based on block hash












2















My intended contract scenario:



The player makes bets. The contract remembers its block number. Then player again makes a request to the contract with the next transaction and receives the result of his bet based on the hash of his bet block



Is there a vulnerability in this scenario? (not considering miner attacks and a limit of 256 blocks)?










share|improve this question



























    2















    My intended contract scenario:



    The player makes bets. The contract remembers its block number. Then player again makes a request to the contract with the next transaction and receives the result of his bet based on the hash of his bet block



    Is there a vulnerability in this scenario? (not considering miner attacks and a limit of 256 blocks)?










    share|improve this question

























      2












      2








      2








      My intended contract scenario:



      The player makes bets. The contract remembers its block number. Then player again makes a request to the contract with the next transaction and receives the result of his bet based on the hash of his bet block



      Is there a vulnerability in this scenario? (not considering miner attacks and a limit of 256 blocks)?










      share|improve this question














      My intended contract scenario:



      The player makes bets. The contract remembers its block number. Then player again makes a request to the contract with the next transaction and receives the result of his bet based on the hash of his bet block



      Is there a vulnerability in this scenario? (not considering miner attacks and a limit of 256 blocks)?







      solidity






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 23 '18 at 3:49









      Алекс КирсановАлекс Кирсанов

      353




      353






















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          If you ignore miner attacks, then there shouldn't be a problem. The people submitting transactions will not be able to knowingly influence the block or block hash that gets generated with their transaction.



          However, this is absolutely something that can be influenced by a miner, so simply ignoring it does not make it less of an attack vector.






          share|improve this answer























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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            3














            If you ignore miner attacks, then there shouldn't be a problem. The people submitting transactions will not be able to knowingly influence the block or block hash that gets generated with their transaction.



            However, this is absolutely something that can be influenced by a miner, so simply ignoring it does not make it less of an attack vector.






            share|improve this answer




























              3














              If you ignore miner attacks, then there shouldn't be a problem. The people submitting transactions will not be able to knowingly influence the block or block hash that gets generated with their transaction.



              However, this is absolutely something that can be influenced by a miner, so simply ignoring it does not make it less of an attack vector.






              share|improve this answer


























                3












                3








                3







                If you ignore miner attacks, then there shouldn't be a problem. The people submitting transactions will not be able to knowingly influence the block or block hash that gets generated with their transaction.



                However, this is absolutely something that can be influenced by a miner, so simply ignoring it does not make it less of an attack vector.






                share|improve this answer













                If you ignore miner attacks, then there shouldn't be a problem. The people submitting transactions will not be able to knowingly influence the block or block hash that gets generated with their transaction.



                However, this is absolutely something that can be influenced by a miner, so simply ignoring it does not make it less of an attack vector.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 23 '18 at 4:59









                Shawn TabriziShawn Tabrizi

                5,2322522




                5,2322522






























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