Jack Grigg
1761ebfb35
ff: Remove SqrtField trait
...
The sqrt() function is now part of the Field trait. ff_derive returns an
error on fields for which it does not support generating a square root
function.
Note that Fq6 and Fq12 in pairing::bls12_381 leave the function
unimplemented. They will be dropped once the migration to the bls12_381
crate is complete. The equivalent structs in that crate are not exposed.
2020-05-02 16:07:48 +12:00
Jack Grigg
49f119fb03
ff: Remove PrimeFieldRepr trait
...
The ff::PrimeField::Repr associated type now has the minimal necessary
bounds, which can be satisfied by a newtype around a byte array.
2020-04-23 18:15:14 +12:00
Jack Grigg
1fe3e3784c
ff: Add Ord bound to PrimeField
2020-04-23 17:31:33 +12:00
Jack Grigg
08500ee712
ff: PrimeField: BitAnd<u64, Output = u64> + Shr<u32, Output = Self>
2020-04-23 16:23:24 +12:00
Jack Grigg
1fdca393bb
ff: PrimeField::{is_even, is_odd}
2020-04-23 16:23:24 +12:00
Jack Grigg
232f0a50b8
ff: Rework BitIterator to work with both u8 and u64 limb sizes
...
This enables BitIterator to be used with both the byte encoding and limb
representation of scalars.
2020-04-23 16:23:24 +12:00
Jack Grigg
fd79de5408
ff: Add PrimeField: From<u64> constraint
2020-04-23 16:23:24 +12:00
Jack Grigg
b6457a905b
ff: Move pow_vartime into a trait that is generic over the limb size
...
The trait is implemented by default for u8 and u64, allowing pow_vartime
to be used with both the byte encoding and limb representation of field
elements.
2020-03-28 00:27:59 +13:00
Jack Grigg
2df2a2b2f2
Merge branch 'develop'
2020-03-14 10:36:58 +13:00
Sean Bowe
31d887c943
Merge commit 'd7f78db121ee6f720e97401ded0c9c597d1a4857' into depends-updates-2
2020-03-03 17:44:28 -07:00
Jack Grigg
61f052a68f
ff: Use readable literals
2020-01-14 22:00:17 -05:00
Jack Grigg
ec2c304efd
no_std support for ff crate
2019-12-14 12:55:34 +00:00
Jack Grigg
1c9f5742fa
Improve Field::pow API and impl
...
Renamed to Field::pow_vartime to indicate it is still variable time with
respect to the exponent.
2019-12-14 12:27:48 +00:00
Jack Grigg
3d2acf48ce
Constant-time field square root
...
WARNING: THIS IS NOT FULLY CONSTANT TIME YET!
This will be fixed once we migrate to the jubjub and bls12_381 crates.
2019-12-13 20:13:30 +00:00
Jack Grigg
40749da9a7
Constant-time field inversion
...
WARNING: THIS IS NOT ACTUALLY CONSTANT TIME YET!
The jubjub and bls12_381 crates will replace our constant-time usages,
but we NEED to fix ff_derive because other users will expect it to
implement the Field trait correctly.
2019-12-13 19:46:04 +00:00
Jack Grigg
662be3551f
impl ConditionallySelectable for Field
2019-12-12 23:15:48 +00:00
Jack Grigg
cded08b0c5
Make Field::square take &self and return Self
2019-12-12 23:09:28 +00:00
Jack Grigg
9dac748224
Make Field::double take &self and return Self
2019-12-12 22:59:18 +00:00
Jack Grigg
91c32f1c7c
Move from Field::negate to Neg operator
2019-12-12 22:52:17 +00:00
Jack Grigg
27c8f34601
Move Field operations to operator-backed traits
...
The ff_derive, pairing, zcash_primitives::jubjub, and bellman dummy_engine
changes are minimally implemented on top of the existing *_assign()
functions.
2019-12-12 21:19:46 +00:00
NikVolf
7844394364
Remove unneeded extern crate
2019-10-08 16:12:14 +03:00
Jack Grigg
4ad3988e43
Crate docs
2019-09-24 14:23:59 +01:00
Jack Grigg
d9a0b9c83f
CI: Check intra-doc links
...
Credit: https://twitter.com/tomaka17/status/1176017851410526208
2019-09-24 10:35:12 +01:00
Eirik Ogilvie-Wigley
76795a9014
cargo fmt
2019-08-20 22:22:03 -06:00
Eirik Ogilvie-Wigley
4b021fcf4d
cargo fix --edition-idioms for ff
2019-08-20 22:01:46 -06:00
Eirik Ogilvie-Wigley
e59738b4ee
cargo fix --edition for ff
2019-08-20 16:45:10 -06:00
Jack Grigg
7a6642b221
Migrate ff to rand_core 0.3 (used by rand 0.5)
2019-07-19 00:35:06 +02:00
Jack Grigg
af9f9c17ee
Add 'ff/' from commit '661558e0c8a5e02e08dac6530d39b2e38919aa04'
...
git-subtree-dir: ff
git-subtree-mainline: 07955092f3661558e0c8
2019-01-06 09:37:22 +00:00
