Re:Quantum Attack on Public-Key Algorithm
by sysk on Saturday December 06, 2014 @02:21AM
(#8708642)
Public keys are only stored as a hash in the blockchain though (assuming no address re-use). Is RIPEMD-160 vulnerable to QC?
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Re:Quantum Attack on Public-Key Algorithm
by martinko on Saturday December 06, 2014 @02:57AM
(#8708673)
Addresses that have been sent from will be vulnerable because their public key will be displayed in the outgoing transaction. One-use addresses will not be vulnerable, as their public keys are indeed stored only as hashes in the blockchain, but the algorithm is not only RIPE, but something like SHA256(RIPEMD-160(SHA256(Public_Key))). I dont know about RIPE, but sha256 should be QC resistant. Thus if you do not reuse addresses you should be safe against QC.