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80 commits

Author SHA1 Message Date
Henry de Valence
c0633ae2d7 KaTeXify some backend documentation 2017-12-01 11:46:36 -08:00
Henry de Valence
e196f8347c Move 32/64-bit code into submodules in a backend module. 
See the doc comment in `backend/mod.rs` for motivation on naming.
 2017-11-16 16:07:55 -08:00
Henry de Valence
207af566b9 Replace signed constants with unsigned constants 2017-11-16 12:13:13 -08:00
Henry de Valence
b6bfc79cd1 Fix up Elligator tests to match ristretto.sage 2017-10-30 16:34:36 -07:00
Henry de Valence
f4135da5c9 Remove is_negative_decaf since ristretto uses the low bit 2017-10-30 16:34:36 -07:00
Henry de Valence
fafdae7a60 Prototype of Ristretto encoding 2017-10-30 16:34:36 -07:00
Isis Lovecruft
acd3826fe2 Implement Montgomery arithmetic and laddering. 
* ADDs part of https://github.com/isislovecruft/curve25519-dalek/issues/47
 2017-09-14 02:09:14 +00:00
Isis Lovecruft
17290db44c
Update copyright/license headers in source files. 2017-08-15 05:09:20 +00:00
Isis Lovecruft
f2883028dc
Use subtle version 0.2.0. 
* CLOSES PR#66 https://github.com/isislovecruft/curve25519-dalek/pull/66
 2017-08-01 02:22:43 +00:00
Henry de Valence
f72de04003 Remove unneeded imports to suppress warnings 2017-07-30 16:29:37 -07:00
Henry de Valence
77103986a3 Split field arithmetic into per-implementation files 
Split the field arithmetic implementations into `FieldElement`,
`FieldElement32`, and `FieldElement64`.  `FieldElement` is a type alias for one
of `FieldElement32` or `FieldElement64`, depending on feature selection.
`field.rs` contains tests and code which is generic with respect to the
implementation (e.g., inversions), while `field_32bit.rs` and `field_64bit.rs`
contain the implementation-specific code.

The implementation is not completely hidden, since `FieldElement32` and
`FieldElement64` are tuple structs whose elements are public; `pub(crate)`
doesn't seem to work for tuple structs.

Similarly, the constants file is split over multiple files, depending on the
implementation.
 2017-07-30 16:25:42 -07:00
Henry de Valence
513ce26942 avoid 128-bit multiplications 2017-07-20 21:33:15 -07:00
Isis Lovecruft
4bcf8bed9d
Move subtle to its own crate. 2017-05-31 21:20:56 +00:00
Isis Lovecruft
16904432be
Remove an unnecessary explicit return in FieldElement.to_bytes(). 2017-05-28 22:45:13 +00:00
Isis Lovecruft
674a00df5b
Some rustfmt fixes. I disagreed with all the other ones. 2017-05-28 22:42:09 +00:00
Isis Lovecruft
0c38718346
Rename subtle::arrays_equal_ct() to subtle::arrays_equal(). 
It's already obvious that it's constant-time because it's in the subtle
module.
 2017-05-26 22:35:45 +00:00
Isis Lovecruft
9a9959061d
Merge remote-tracking branch 'hdevalence/feature/clippy-fixes' into develop 2017-05-06 00:16:09 +00:00
Henry de Valence
cb656bafa7 Delete bytes_equal_less_than 
This function is unused and untested.  It's also incorrect, since the loop
32..0 iterates over an empty range.  Remove it for now; if we need it later, it
still lives in the history.
 2017-04-25 15:08:59 -07:00
Henry de Valence
57c96616b9 Remove unused import 2017-04-25 14:50:59 -07:00
Henry de Valence
e00cd114d7 Have radix 25.5 reduce() consume its argument 2017-04-02 23:46:01 +02:00
Henry de Valence
162dfc8331 Remove clones on Copy types 2017-04-02 23:45:34 +02:00
Henry de Valence
3705346afa Remove unnecessary returns 2017-04-02 23:39:45 +02:00
Henry de Valence
7f4b96150d Remove explicit lifetimes 2017-04-02 23:36:05 +02:00
Henry de Valence
c8e7e22ddf Remove unnecessary returns 2017-04-02 23:28:01 +02:00
Henry de Valence
73e172484c Add tick marks around code items in docs 2017-04-02 23:12:18 +02:00
Isis Lovecruft
d549fdc8f9
Whitespace fixes. 2017-03-17 21:42:40 +00:00
Henry de Valence
2f5b9e198c Remove warnings from load3/load4 and load8 functions 2017-03-14 01:05:31 -07:00
Isis Lovecruft
6991b4264b
Merge remote-tracking branch 'hdevalence/feature/64bit-multiplication_r3' into develop 2017-03-14 04:23:11 +00:00
Isis Lovecruft
f6930997d2
Make #[feature(test)] depend on #[cfg(all(test, feature = "bench"))]. 
* FIXES Issue #38:
   https://github.com/isislovecruft/curve25519-dalek/pull/38
 2017-03-14 01:59:08 +00:00
Isis Lovecruft
cb3b3144be
Remove prefix from field tests. 2017-03-14 01:11:54 +00:00
Isis Lovecruft
904911e2b8
Move field module benchmarks to separate module. 2017-03-14 01:11:03 +00:00
Henry de Valence
cf9f9aa402 Enable radix_51 on nightly 2017-03-13 17:04:37 -07:00
Henry de Valence
45cc82d258 Move multiply() into the Mul impl 2017-03-13 16:38:05 -07:00
Henry de Valence
f11c97e75c Remove obsolete test code 2017-03-13 16:38:05 -07:00
Henry de Valence
d2a51197d7 Add a carry-reduction during subtraction. 2017-03-13 16:38:05 -07:00
Henry de Valence
e1d3281c2d Add debug asserts for multiplication preconditions. 2017-03-13 16:38:05 -07:00
Henry de Valence
9524c079ee Reduce mod p in radix51 to_bytes 2017-03-13 16:38:05 -07:00
Henry de Valence
0fa8d8f4a7 Reduce to narrower range before to_bytes 2017-03-13 16:38:05 -07:00
Henry de Valence
24f11427a1 Add 2p to avoid underflows 2017-03-13 16:38:05 -07:00
Henry de Valence
a9cbca668b Implement squaring for radix51 2017-03-13 16:38:05 -07:00
Henry de Valence
df080411e0 Implement multiply() for radix51 2017-03-13 16:38:05 -07:00
Henry de Valence
d6465ccd5e Fix remaining compile errors for radix_51 2017-03-13 16:38:05 -07:00
Henry de Valence
147b9d90b8 Revert "Add radix51 impl of reduce" 
This reverts commit 488e886d1e1b11400dedc6c41e7108e34c6747cc.
 2017-03-13 16:38:05 -07:00
Henry de Valence
75baefabeb Stub remaining radix_51 functions with unimplemented!() 2017-03-13 16:38:05 -07:00
Henry de Valence
b515e43dfd Move to_bytes_64 to to_bytes for radix51 2017-03-13 16:38:05 -07:00
Henry de Valence
7591c74018 Add radix51 impl of reduce 2017-03-13 16:38:05 -07:00
Henry de Valence
08ac5a9068 Add radix51 impl of from_bytes 2017-03-13 16:38:05 -07:00
Henry de Valence
7f8b3fe594 Rename combine_coeffs to reduce 2017-03-13 16:38:05 -07:00
Henry de Valence
f16f5d1e73 Add minus_one for radix51 2017-03-13 16:38:05 -07:00
Henry de Valence
3eab4acbd8 Add p constant for subtraction 2017-03-13 16:38:05 -07:00