Linked Questions

9 votes
2 answers
11k views

What if duplicate wallet addresses are created? [duplicate]

I'm a newbie to Bitcoin, so I apologize if this seems like a "noob" question. So, from what I've read: anyone can create a new Bitcoin wallet. Upon creation, a wallet address is automatically ...
user avatar
  • 293
3 votes
2 answers
594 views

How safe is bitcoin with regard to a random address generation attack? [duplicate]

Imagine an attacker implementing something like the following pseudocode on the fastest ASIC farm money can buy: attack(blockchain, my_address) addresses = generate_tree_of_all_nonempty_addresses(...
user avatar
  • 327
0 votes
2 answers
2k views

Generating Public & Private key pairs for cracking Bitcoin [duplicate]

Would one of the better methods to crack Bitcoin be to start creating a massive database of key pairs? It would then be possible to reference the Private key required off the public key from the DB.
user avatar
  • 17
0 votes
1 answer
2k views

guessing random private key [duplicate]

From what I understand (which is not much), private key is like id/password for your wallet. So lets say, I have random number generator and I generate random number, is it possible that generated ...
user avatar
  • 1
1 vote
1 answer
631 views

How likely are key pair collision attacks? [duplicate]

Is it possible to be profitable by developing a collision application that continually and automatically generate a key pair, check for the existence of the public address in the block chain, and then ...
user avatar
  • 173
-1 votes
2 answers
326 views

Can't I create milions of Bitcoin addresses and wait if someone will have same one? [duplicate]

If Bitcoin addresses can be generated offline, then the Bitcoin network doesn't check for duplicate addresses while generating a new one. Can't I just make a script and generate milions of Bitcoin ...
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  • 29
1 vote
0 answers
446 views

Can a private key enumeration attack be used to steal bitcoins? [duplicate]

Let's consider the following algorithm enumerate all of the private keys for each of the enumerated private keys, generate the relative public key and verify whether there is any unspent coin ...
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  • 131
2 votes
1 answer
349 views

Gaming Bitcoin by generating millions of wallets [duplicate]

What’s to stop someone from gaming the system and creating millions of wallets, increasing their odds of accidental deposits? If nothing else you could conceive of a DOS attack of sorts, where the ...
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2 votes
1 answer
161 views

Bitcoin security, what is wrong with my thinking? [duplicate]

Lets assume I keep generating random public keys with their matching private keys and never use them. Severals years later I am checking for positive match against the blockchain for all my generated ...
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  • 23
1 vote
1 answer
203 views

Bitcoin adresses seem not to be collision resistant. Please tell me I am wrong [duplicate]

I am trying to understand Bitcoin addresses, but it does not seem to be easy at all. As far as I know, a Transaction uses one or more addresses as input and one or more addresses as output. Is this ...
user avatar
  • 11
0 votes
1 answer
121 views

Is there A Mechanism In Place that Prevent Address 'Squatting'? [duplicate]

Is there a function or mechanism in the bitcoin protocol that prevents someone from creating millions or billions of bitcoin addresses and just sitting on them? Do the addresses need a minimum balance ...
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  • 1
0 votes
0 answers
70 views

How secure is a private key? [duplicate]

Possible Duplicate: Is it possible to brute force bitcoin address creation in order to steal money? I've tried brainwallet.org and now I wonder, what happens if someone starts to generate a lot ...
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  • 143
2 votes
1 answer
56 views

Future risk of computer farms generating addresses for previous balance? [duplicate]

I understand how difficult it would be to brute force a specific bitcoin address' private key. I'm wondering out of curiosity though, with bitcoin being adopted so rapidly, will there ever be ...
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1 vote
0 answers
25 views

Is Bitcoin vulnerable to a Birthday Attack against Private Keys? [duplicate]

This is a definition of the Birthday Attack. Someone claims Bitcoin is vulnerable to such an attack in the bitcoin IRC chat. Are they correct?
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0 votes
0 answers
20 views

Why can't bitcoin be stolen in the following manner? [duplicate]

Assume I'm a miner. I would have the complete UTXO set with me. Let us say I try generating random keys and hash the public keys generated and compare it with the utxo set until I find a match. When I ...
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