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Group trait overhaul (#52)

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* Decouple element from `Group`

* Change `SUITE_ID` to `u16` and rework `get_context_string()`

* Rework scalar de-serialization

* Rename `Group` methods

- `random_nonzero_scalar` -> `random_scalar`
- `scalar_as_bytes` -> `serialize_scalar`
- `scalar_invert` -> `invert_scalar`

* Rework element de-serialization

* Rename and remove `Group` methods

`to_arr` -> `serialize_elem`
`base_point` -> `base_elem`
`is_identity` -> removed
`identity` -> `identity_elem`
`zero_scalar` -> hidden behind `cfg(test)`

* Sort `Group` methods

* Rework `expand_message_xmd` and remove utility

* Improve P256 `hash_to_scalar`
This commit is contained in:
daxpedda
2022-01-18 03:34:28 -08:00
committed by GitHub
parent e7675437e6
commit 652fd1d1d0
13 changed files with 657 additions and 702 deletions
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Cargo.toml
+1 -1
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@@ -24,7 +24,7 @@ p256 = [
"once_cell",
"p256_",
]
ristretto255 = []
ristretto255 = ["generic-array/more_lengths"]
ristretto255_fiat_u32 = ["curve25519-dalek/fiat_u32_backend", "ristretto255"]
ristretto255_fiat_u64 = ["curve25519-dalek/fiat_u64_backend", "ristretto255"]
ristretto255_simd = ["curve25519-dalek/simd_backend", "ristretto255"]