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IOTA does not use traditional asymmetrical (public-key) cryptography algorithms which depend on not being able to efficiently computing discrete logarithms or factoring numbers (which are believed to be easy on a quantum computer). Instead, its signatures are based on the Winternitz signature scheme (slightly modified for ternary) which only depend on the ...


5

Post-quantum cryptography is a fairly young field, and while there may be post-quantum signature schemes that are not one-time signatures, I don't know of any (feel free to correct me here). A method to create "reusable" signatures from one-time signatures is the "Merkle signature scheme", which is also used by the Coordinator to sign its milestones. The ...


4

While it's true that many of IOTA design choices were made with IoT devices in mind, it's important to note that being future proof is also a very important feature of the project. Admittedly, many of the current choices could seem overthought - and impractical - for today's use (namely ternary system and quantum proof algorithms). But the rise of ...


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IOTA is what we call 'quantum robust' because of the signature scheme that it uses. You can find detailed information about signatures on our documentation portal.


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Just completing a response from the mihi: Since all Iotas have already been created on genesis, it's impossible to "mine" Iotas and take advantage of a quantum computer to do this. Iota is resistant to spam attacks because it forces users to validate two transactions before making one. Spam attacks have been a big problem on the Bitcoin network lately. ...


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