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Re: Bitcoin Is Not Quantum-Safe, And How We Can Fix It When Needed | Bitcoin Magazine

From: David Booth <david@dbooth.org>
Date: Wed, 18 May 2016 11:14:41 -0400
To: Dave Longley <dlongley@digitalbazaar.com>, Timothy Holborn <timothy.holborn@gmail.com>, W3C Credentials Community Group <public-credentials@w3.org>
Message-ID: <573C86E1.10906@dbooth.org>
On 05/18/2016 10:58 AM, Dave Longley wrote:
> On 05/17/2016 10:18 AM, Timothy Holborn wrote:
>> It's an old article[1], wondering if their is any technical update
>> since?
>>
>> [1]
>> https://bitcoinmagazine.com/articles/bitcoin-is-not-quantum-safe-and-how-we-can-fix-1375242150
>>
>
> This is exactly why using public key cryptography that relies upon the
> assumed difficulty of particular math problems to encrypt data on a
> public blockchain is a bad idea.
>
> This means that using today's common asymmetric encryption methods of
> RSA/ECC to encrypt certain types of data on a public blockchain should
> not be considered secure. That encrypted data is available to everyone
> ... and it won't stay encrypted for all that long. This is especially a
> problem for identity-related information, which is often sensitive and
> has a long shelf life.

What alternatives would you suggest?

David Booth
Received on Wednesday, 18 May 2016 15:15:09 UTC

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