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POLYVAL universal hash function for AES-GCM(-SIV) #13

Merged
merged 4 commits into from
Aug 26, 2019
Merged

POLYVAL universal hash function for AES-GCM(-SIV) #13

merged 4 commits into from
Aug 26, 2019

Commits on Aug 26, 2019

  1. polyval: Initial crate boilerplate

    @tarcieri
    tarcieri committed Aug 26, 2019
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  2. polyval: Initial implementation 

    Implements POLYVAL using Shay Gueron's techniques for efficient field
multiplications using PCLMULQDQ.

More information on these techniques here:

https://blog.quarkslab.com/reversing-a-finite-field-multiplication-optimization.html
    @tarcieri
    tarcieri committed Aug 26, 2019
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  3. .travis.yml: Bump polyval MSRV to 1.32.0 

    The POLYVAL tests are failing on Rust 1.27.0, but passing on newer
versions, suggesting there may be something amiss with `core::arch`
support for `pclmulqdq` on older Rust versions.

This bumps it up to our ideal MSRV, as 1.32.0+ would allow us to replace
the dependency on the `byteorder` crate with equivalent `core`
functions.
    @tarcieri
    tarcieri committed Aug 26, 2019
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  4. poly1305/polyval: Switch from MacResult to built-in Tag types 

    Eliminates the dependency on `crypto-mac` by using a built-in `Tag` type
which impl's `subtle::ConstantTimeEq`.

Ideally this would probably get extracted into some other trait, e.g.
`UniversalHash`, but for now just use concrete types per crate.
    @tarcieri
    tarcieri committed Aug 26, 2019
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