160cb42398
Change various into_bytes to to_bytes.
2019-05-31 19:47:56 -06:00
02b05eb075
Make CompletedPoint::into_extended take ownership, and inline.
2019-05-31 19:41:15 -06:00
803b6a3e65
Merge pull request #21 from str4d/stack-tweaks
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Stack tweaks
2019-05-30 17:42:07 -06:00
e1193d2ae9
impl Mul<Fr> for [Extended|Affine]NielsPoint
2019-05-29 17:30:24 +01:00
8c5adc3708
cargo fmt
2019-05-28 09:59:42 -06:00
4aebd80105
Change AffinePoint::to_niels to be a const fn.
2019-05-28 09:59:39 -06:00
a6afd81603
AffineNielsPoint::multiply_bits
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For parity with ExtendedNielsPoint::multiply_bits, and it is also
slightly more efficient to use if the caller is starting from an
AffinePoint.
2019-05-22 21:17:09 +01:00
aa0628ffcf
ExtendedNielsPoint::multiply_bits
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This allows the caller to control which stack frames pay the cost of
Montgomery reduction and scalar multiplication, by splitting
Fr::into_bytes out from the multiplication step. It also enables the
caller to drop the Montgomery multiplication and reduction round-trip if
they already have an encoded Fr element.
2019-05-22 11:41:33 +01:00
c392ffbeb2
Use ExtendedNielsPoint::identity directly in ExtendedPoint::multiply
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Saves two Fq multiplications and a stack allocation.
2019-05-22 11:41:33 +01:00
c5bf022613
Remove unnecessary shadowing from Fq::invert and Fr::invert
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Shadowing causes Rust to create new stack variables instead of reusing
the stack space. This change saves 160 bytes of stack space in
Fq::invert (a 20% saving in my tests), and 128 bytes of stack space in
Fr::invert.
2019-05-22 11:41:33 +01:00
085e8ae675
Replace unnecessary moves of Copy types with immutable references
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This significantly reduces the size of the stack.
2019-05-22 11:39:16 +01:00
cb57a647b5
Use CtOption from subtle crate
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Closes #20 .
2019-05-04 20:58:19 +01:00
e72b382055
Fix comment regarding montgomery reduction
2019-03-31 23:15:27 -06:00
35d32faa63
Add implementations of is_prime_order() for AffinePoint and ExtendedPoint.
2019-03-26 21:31:34 -06:00
390aa23db2
Rename Maybe to CtOption, and do not expose submodule.
2019-03-26 21:13:50 -06:00
26de2362db
Add affine mixed addition operator overloading.
2019-03-26 20:59:28 -06:00
1d2a424c1e
Re-enable dead_code lints for EDWARDS_D/EDWARDS_D2.
2019-03-26 20:57:17 -06:00
3c630463df
Add tests for AffinePoint serialization and deserialization.
2019-03-26 20:56:56 -06:00
2601c13a2d
Remove glob import that was importing MODULUS from Fr.
2019-03-21 15:57:22 -06:00
8edc7ebe2f
Disallow unsafe code.
2019-03-21 15:52:13 -06:00
44765a7ad4
Introduce utility functions for AffinePoint and ExtendedPoint.
2019-03-21 15:47:43 -06:00
9f0b177fb7
Introduce from_raw for field elements.
2019-03-20 23:44:31 -06:00
0cc3d82d98
cargo fmt
2019-03-20 20:30:35 -06:00
c0e7546f6f
Deny missing Debug implementations and documentation for public facing APIs.
2019-03-20 18:31:33 -06:00
c70eac71f1
Avoid unnecessary subtraction of modulus during 512-bit reduction.
2019-03-20 18:28:24 -06:00
62e20edcf5
Make inversion API return Maybe.
2019-03-20 18:03:35 -06:00
e597b7ee08
Add tests for Maybe::map and Maybe::and_then.
2019-03-20 17:48:41 -06:00
08221918bc
Make Fq square root constant time.
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Co-authored-by: Jack Grigg <jack@z.cash>
Co-authored-by: Eirik0 <eirik@z.cash>
2019-03-20 15:32:06 -06:00
71d5b5a1e8
Make Fr sqrt constant time.
2019-03-19 18:06:29 -06:00
8752e54904
Make field element deserialization constant time.
2019-03-19 17:57:12 -06:00
c764c97c8e
Introduce "Maybe" abstraction.
2019-03-19 16:26:39 -06:00
d197cb1988
Implementation of Tonelli-Shanks that actually matches the paper, and is more efficient.
2019-03-01 20:34:53 -07:00
51a5b6ae25
Fix typo in documentation.
2019-02-22 13:49:47 -07:00
d502391eef
Add more documentation.
2019-02-22 10:04:15 -07:00
fd32165f1c
Various minor improvements.
2019-02-20 20:44:17 -07:00
b413f8b6c9
cargo fmt
2019-02-20 13:25:49 -07:00
27d6e94677
Add corner case tests for zero
2019-02-20 13:24:50 -07:00
1aa0cdf63b
Merge pull request #15 from Eirik0/from-bytes-wide
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From bytes wide
2019-02-19 19:52:25 -07:00
2da490cee3
Add from bytes wide for Fr
2019-02-10 23:09:15 -07:00
36a917965d
Add from bytes wide for Fq
2019-02-10 22:56:57 -07:00
43e451f103
cargo fmt
2019-02-10 22:47:36 -07:00
812ab51091
Updates for Rust 2018 edition.
2019-02-08 19:11:29 -07:00
f3c44112e6
Add test and format
2019-01-09 15:50:16 -07:00
954e5dbbd8
Remove duplicate assert
2019-01-09 15:25:37 -07:00
abc25f7677
Simplify square root function for Fr
2019-01-09 15:25:36 -07:00
774be1dea6
Add scalar field Fr
2019-01-09 15:25:36 -07:00
318693246d
Add test for batch normalization.
2019-01-09 10:40:30 -07:00
55f5f4b676
Test for point multiplication.
2019-01-08 11:29:38 -07:00
d61b6bc841
Merge pull request #11 from Eirik0/fq-cleanup
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Remove some mutable variables and use multiplication operator
2019-01-07 21:43:34 -07:00
62270c04fd
Implementation of basic point multiplication
2019-01-07 20:12:25 -07:00
Sean Bowe
Jack Grigg
Eirik0
Eirik Ogilvie-Wigley