Advisory: secret size attack on cross-chain hash lock smart contracts

CMaurice · February 19, 2018, 5:15pm

gist.github.com

https://gist.github.com/markblundeberg/7a932c98179de2190049f5823907c016

atomic-size-attack.md


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# Advisory: secret size attack on cross-chain hash lock smart contracts

*Dr. Mark B Lundeberg, 2018 Feb 15*
`bitcoincash:qqy9myvyt7qffgye5a2mn2vn8ry95qm6asy40ptgx2`

This security advisory notes a vulnerability in the common construction of
cross-chain smart contracts (contracts between distinct cryptocurrencies)
through hash locking. I focus on the primary use case in [atomic

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I have no idea if applicable to Bisq, but thought I’d post just in case.

alexej996 · February 19, 2018, 6:26pm

Document seem pretty interesting However Bisq doesn’t use atomic swaps, but just regular multisigs on Bitcoin blockchain.

CMaurice · February 19, 2018, 6:54pm

Good, and thanks: I didn’t know that