Title: What is Transaction malleability? How often will it happen? Post by: Julian ogan on June 11, 2019, 01:22:03 PM I was reading and just came across transaction malleability attack. I read multiple links that i got but, there are lot more questions in my mind.
My queries:
Can someone please explain this attack in lye-man language? Title: Re: What is Transaction malleability? How often will it happen? Post by: NeuroticFish on June 11, 2019, 01:57:51 PM I was reading and just came across transaction malleability attack. I read multiple links that i got but, there are lot more questions in my mind. Did you find / read this article? https://www.coindesk.com/bitcoin-bug-guide-transaction-malleability It seems to answers to basically all your questions in a pretty simple language. Title: Re: What is Transaction malleability? How often will it happen? Post by: ABCbits on June 11, 2019, 07:12:20 PM
It's different, the main difference is
That depends whether someone decide to abuse Transaction malleability
Yes, if you use SegWit address.
Yes, but you don't need any mining power to do it. All you need to are change transaction/signature format of an transaction and broadcast it. Title: Re: What is Transaction malleability? How often will it happen? Post by: Julian ogan on June 14, 2019, 06:35:57 AM
It's different, the main difference is
That depends whether someone decide to abuse Transaction malleability
Yes, if you use SegWit address.
Yes, but you don't need any mining power to do it. All you need to are change transaction/signature format of an transaction and broadcast it. Can you please recommend any article or book to read this topic in depth. Title: Re: What is Transaction malleability? How often will it happen? Post by: pooya87 on June 15, 2019, 03:35:39 AM Can someone please explain this attack in lye-man language? it means you change something inside of any transaction you receive so that the final transaction hash changes but the transaction doesn't become invalid. so anybody could do that, you won't even need to run a node! you just have to listen to a node and receive/relay transactions. for example changing signature was a way to malleate a transaction. one way is to inject ignore-able OP codes like OP_0 in it, another was to change S value to -S since on an elliptic curve (x,y) is congruence to (x,-y). both of these change the transaction hash (TX_ID) but won't make the transaction invalid. |