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On Thu, Oct 19, 2017 at 5:32 PM, Hanno Böck <hanno@g.o> wrote: |
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> On Thu, 19 Oct 2017 21:08:40 +0200 |
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> Michał Górny <mgorny@g.o> wrote: |
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> |
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> > manifest-hashes = SHA512 SHA3_512 |
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> |
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> Counterproposal: Just use SHA512. |
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> |
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> There isn't any evidence that any SHA2-based hash algorithm is going to |
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> be broken any time soon. If that changes there will very likely be |
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> decades of warning before a break becomes practical. |
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> |
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> Having just one hash is simpler and using a well supported one like |
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> SHA512 may make things easier than using something that's still not |
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> very widely supported. |
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Yet having more than one lets you match make sure nobody hijacked your |
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manifest file when an attack vector is inevitably discovered for the old |
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new algorithm (whether SHA2, SHA3, or BLAKE2), because you'll be able to |
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confirm the file is the same one that matched the old checksum in addition |
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to the new one. |
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