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109 commits

Author SHA1 Message Date
Frank Denis
bcef123d90 Address more review issues 2020-08-16 22:35:27 -07:00
Frank Denis
263c444738 Move loop decrements into continuations 
Suggested by @daurnimator
 2020-08-16 22:35:27 -07:00
Frank Denis
ed558bfbaa Address @daurnimator feedback 2020-08-16 22:35:27 -07:00
Frank Denis
dd8f7b396c Rename the field and scalar modules 
Suggested by @kubkon
 2020-08-16 22:35:27 -07:00
Frank Denis
c483bf4f97 Update lib/std/crypto/25519/ristretto255.zig 
Co-authored-by: Jakub Konka <kubkon@jakubkonka.com>
 2020-08-16 22:35:27 -07:00
Frank Denis
739b68938c Update lib/std/crypto/25519/field25519.zig 
Co-authored-by: Jakub Konka <kubkon@jakubkonka.com>
 2020-08-16 22:35:27 -07:00
Frank Denis
6af9bc8c68 Initialize structures directly 
Suggested by @kubkon, thanks!
 2020-08-16 22:35:27 -07:00
Frank Denis
5f9953f41f Remove mem.timingSafeEqual() for now 
This requires assembly implementations, and is not needed for
signature verification.

Thanks @daurnimator
 2020-08-16 22:35:27 -07:00
Frank Denis
3f0d80f25e Improve curve25519-based crypto 
This is a rewrite of the x25519 code, that generalizes support for
common primitives based on the same finite field.

- Low-level operations can now be performed over the curve25519 and
edwards25519 curves, as well as the ristretto255 group.
- Ed25519 signatures have been implemented.
- X25519 is now about twice as fast.
- mem.timingSafeEqual() has been added for constant-time comparison.

Domains have been clearly separated, making it easier to later add
platform-specific implementations.
 2020-08-16 22:35:27 -07:00