for decaf377 0.9.0

CHANGELOG.md

@@ -58,3 +58,5 @@
 * fix: field modulus by @TalDerei in #92
 * adjust anyhow scope and remove unused dependencies by @neithanmo in #96
 * add power impl and expose `Fq::from_montgomery_limbs` by @redshiftzero in #98
+* Add missing conversion trait implementations by @neithanmo in #97
+

README.md

@@ -28,6 +28,9 @@ website](https://protocol.penumbra.zone/main/crypto/decaf377.html).
 ## Features
 
 * `std`: default, for use in `std` environments,
+* `alloc`: default, for use in `alloc` environments,
+* `arkworks`: default, uses Arkworks crates for elliptic curve operations,
+* `u32_backend`: uses 32-bit finite field arithmetic (default is 64-bit),
 * `r1cs`: enables rank-1 constraint system gadgets,
 * `parallel`: enables the use of parallelism.
 

src/min_curve/encoding.rs

@@ -1,31 +1,4 @@
 use crate::EncodingError;
-use core::convert::TryFrom;
 
 #[derive(Copy, Clone, Default, Eq, Ord, PartialOrd, PartialEq, Debug)]
 pub struct Encoding(pub [u8; 32]);
-
-impl TryFrom<&[u8]> for Encoding {
-    type Error = EncodingError;
-
-    fn try_from(bytes: &[u8]) -> Result<Self, Self::Error> {
-        if bytes.len() == 32 {
-            let mut arr = [0u8; 32];
-            arr.copy_from_slice(&bytes[0..32]);
-            Ok(Encoding(arr))
-        } else {
-            Err(EncodingError::InvalidSliceLength)
-        }
-    }
-}
-
-impl From<[u8; 32]> for Encoding {
-    fn from(bytes: [u8; 32]) -> Encoding {
-        Encoding(bytes)
-    }
-}
-
-impl From<Encoding> for [u8; 32] {
-    fn from(enc: Encoding) -> [u8; 32] {
-        enc.0
-    }
-}