Generating random numbers in solidity based on block hash
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
asked Nov 23 '18 at 3:49
Алекс КирсановАлекс Кирсанов
353
add a comment |
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
asked Nov 23 '18 at 3:49
Алекс КирсановАлекс Кирсанов
353
add a comment |
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
asked Nov 23 '18 at 3:49
Алекс КирсановАлекс Кирсанов
353
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
solidity
asked Nov 23 '18 at 3:49
Алекс КирсановАлекс Кирсанов
353
asked Nov 23 '18 at 3:49
Алекс КирсановАлекс Кирсанов
353
asked Nov 23 '18 at 3:49
Алекс КирсановАлекс Кирсанов
353
asked Nov 23 '18 at 3:49
Алекс КирсановАлекс Кирсанов
353
asked Nov 23 '18 at 3:49
Алекс КирсановАлекс Кирсанов
353
353
add a comment |
add a comment |
1 Answer
1
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oldest
votes
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.
answered Nov 23 '18 at 4:59
Shawn TabriziShawn Tabrizi
5,0172522
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
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.
answered Nov 23 '18 at 4:59
Shawn TabriziShawn Tabrizi
5,0172522
add a comment |
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.
answered Nov 23 '18 at 4:59
Shawn TabriziShawn Tabrizi
5,0172522
add a comment |
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.
answered Nov 23 '18 at 4:59
Shawn TabriziShawn Tabrizi
5,0172522
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.
answered Nov 23 '18 at 4:59
Shawn TabriziShawn Tabrizi
5,0172522
answered Nov 23 '18 at 4:59
Shawn TabriziShawn Tabrizi
5,0172522
answered Nov 23 '18 at 4:59
Shawn TabriziShawn Tabrizi
5,0172522
answered Nov 23 '18 at 4:59
Shawn TabriziShawn Tabrizi
5,0172522
5,0172522
add a comment |
add a comment |
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