Change generator of ark-curve25519 (#767)

* Change generator of ark-curve25519 Use the same generator of curve25519-dalek for inter-operability. * Update CHANGELOG --------- Co-authored-by: Pratyush Mishra <[email protected]>
arkworks-rs · Jan 31, 2024 · afd6188 · afd6188
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -17,6 +17,7 @@
         - Rename `get_mul_window_size` to `compute_window_size` and make it private.
 - [\#748](https://github.com/arkworks-rs/algebra/pull/748) (`ark-ff`) Add `FromStr` for `BigInteger`.
 - [\#756](https://github.com/arkworks-rs/algebra/pull/756) (`ark-ec`) Require `Neg`, `Sub`, `SubAssign` ops on `AffineRepr`.
+- [\#767](https://github.com/arkworks-rs/algebra/pull/767) (`ark-curve25519`) Change (negate) generator of curve25519 for inter-operability with curve25519-dalek.
 
 ### Features
 

diff --git a/curves/curve25519/src/curves/mod.rs b/curves/curve25519/src/curves/mod.rs
@@ -60,9 +60,9 @@ impl MontCurveConfig for Curve25519Config {
 }
 
 /// GENERATOR_X =
-/// 38213832894368730265794714087330135568483813637251082400757400312561599933396
+/// 19682211724289367445990778417013818358151178695569199618971391691394964886553
 pub const GENERATOR_X: Fq =
-    MontFp!("38213832894368730265794714087330135568483813637251082400757400312561599933396");
+    MontFp!("19682211724289367445990778417013818358151178695569199618971391691394964886553");
 
 /// GENERATOR_Y =
 /// (4/5)