[tor-bugs] #17783 [Tor]: Pull in a SHA-3 implementation.

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#17783: Pull in a SHA-3 implementation.
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     Reporter:  yawning      |      Owner:  yawning
         Type:  enhancement  |     Status:  new
     Priority:  Medium       |  Milestone:  Tor: 0.2.8.x-final
    Component:  Tor          |    Version:  Tor: unspecified
     Severity:  Normal       |   Keywords:  tor-core crypto
Actual Points:               |  Parent ID:
       Points:               |    Sponsor:
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 We'll need it sooner or later, particularly because SHAKE128/SHAKE256 are
 incredibly handy for what they do, and having a cryptographic hash that's
 immune to length extension attacks simplifies some of our constructs.

 I have a modified version of keccak-tiny (https://github.com/coruus
 /keccak-tiny) that provides more familiar semantics that I can clean up
 for inclusion.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17783>
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