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Prep v5.0-rc.0 (#906)

Browse source 
* Bump versions for release

* Correct internal lizard docs

* Make changelogs more thorough
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6
Cargo.lock generated
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@ -305,7 +305,7 @@ dependencies = [
[[package]] [[package]]
name = "curve25519-dalek" name = "curve25519-dalek"
version = "5.0.0-pre.6" version = "5.0.0-rc.0"
dependencies = [ dependencies = [
"cfg-if", "cfg-if",
"cpufeatures", "cpufeatures",
@ -370,7 +370,7 @@ dependencies = [
[[package]] [[package]]
name = "ed25519-dalek" name = "ed25519-dalek"
version = "3.0.0-pre.6" version = "3.0.0-rc.0"
dependencies = [ dependencies = [
"blake2", "blake2",
"chacha20", "chacha20",
@ -1466,7 +1466,7 @@ dependencies = [
[[package]] [[package]]
name = "x25519-dalek" name = "x25519-dalek"
version = "3.0.0-pre.6" version = "3.0.0-rc.0"
dependencies = [ dependencies = [
"criterion", "criterion",
"curve25519-dalek", "curve25519-dalek",

41
curve25519-dalek/CHANGELOG.md
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@ -5,43 +5,26 @@ major series.
## 5.x series ## 5.x series
## 5.0.0-pre.6 ### 5.0.0-rc.0 - 2026-05-28
* Remove `ff` and `group` features until they have a release ([#907](https://github.com/dalek-cryptography/curve25519-dalek/pull/907))
* Perf: Use maximum available NAF window size in `VartimePrecomputedStraus` ([#848](https://github.com/dalek-cryptography/curve25519-dalek/pull/848))
* Add Lizard bytes-to-point injection for Ristretto. Gated under `lizard` feature. ([#826](https://github.com/dalek-cryptography/curve25519-dalek/pull/826))
* Rename `Scalar::batch_invert` -> `Scalar::invert_batch` for consistency. Also make it no-alloc. ([#789](https://github.com/dalek-cryptography/curve25519-dalek/pull/789))
* Add an allocating batch inversion called `Scalar::invert_batch_alloc` ([#789](https://github.com/dalek-cryptography/curve25519-dalek/pull/789))
* Add `Scalar::div_by_2` ([#805](https://github.com/dalek-cryptography/curve25519-dalek/pull/805))
* Add `EdwardsPoint::hash_to_curve` ([#786](https://github.com/dalek-cryptography/curve25519-dalek/pull/786))
* Undeprecate `Scalar::from_bits()`
* Remove deprecated functions `FieldElement::as_bytes()` and `EdwardsPoint::nonspec_map_to_curve()`
* Upgrade `rand_core` dependency to v0.10.0 * Upgrade `rand_core` dependency to v0.10.0
* Upgrade `digest` and `sha2` deps * Upgrade `digest` and `sha2` deps
## 5.0.0-pre.5
* Upgrade `rand_core` dependency to v0.10.0-rc-6
## 5.0.0-pre.4
* Add allocation-free `EdwardsPoint::compress_batch()`
* Perf: Use maximum available NAF window size in `VartimePrecomputedStraus`
* Upgrade `rand_core` dependency to v0.10.0-rc-3
## 5.0.0-pre.3
* Add Lizard bytes-to-point injection for Ristretto. Gated under `lizard` feature.
* Upgrade `rand_core` dependency to v0.10.0-rc-2
## 5.0.0-pre.1
* Rename `Scalar::batch_invert` -> `Scalar::invert_batch` for consistency. Also make it no-alloc.
* Add an allocating batch inversion called `Scalar::invert_batch_alloc`.
* Add `Scalar::div_by_2`
## 5.0.0-pre.0
* Update edition to 2024 * Update edition to 2024
* Update the MSRV from 1.60 to 1.85 * Update the MSRV from 1.60 to 1.85
* Remove deprecated functions `FieldElement::as_bytes()` and `EdwardsPoint::nonspec_map_to_curve()`
* Use constant-time equality testing for compressed Ristretto and Edwards points, rather than autoderived equality * Use constant-time equality testing for compressed Ristretto and Edwards points, rather than autoderived equality
* Undeprecate `Scalar::from_bits()`
## 4.x series ## 4.x series
### 4.2.0 [YANKED] ### 4.2.0 [YANKED] - 2025-07-08
NOTE: yanked because `hash_to_curve` was improperly implemented (#785) NOTE: yanked because `hash_to_curve` was improperly implemented (#785)
@ -52,7 +35,7 @@ NOTE: yanked because `hash_to_curve` was improperly implemented (#785)
* Add batch conversion function `EdwardsPoint::to_montgomery_batch()` * Add batch conversion function `EdwardsPoint::to_montgomery_batch()`
* Make `VartimePrecomputedStraus::optional_mixed_multiscalar_mul()` and `VartimeRistrettoPrecomputation::vartime_mixed_multiscalar_mul()` accept more points than static scalars * Make `VartimePrecomputedStraus::optional_mixed_multiscalar_mul()` and `VartimeRistrettoPrecomputation::vartime_mixed_multiscalar_mul()` accept more points than static scalars
### 4.1.3 ### 4.1.3 - 2024-06-18
* Security: Fix timing leak in Scalar subtraction on u32, u64, fiat_u32, and fiat_u64 backends * Security: Fix timing leak in Scalar subtraction on u32, u64, fiat_u32, and fiat_u64 backends
* Fix assorted new warnings and lints from rustc and clippy * Fix assorted new warnings and lints from rustc and clippy

2
curve25519-dalek/Cargo.toml
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@ -3,7 +3,7 @@ name = "curve25519-dalek"
# Before incrementing: # Before incrementing:
# - update CHANGELOG # - update CHANGELOG
# - update README if required by semver # - update README if required by semver
version = "5.0.0-pre.6" version = "5.0.0-rc.0"
edition = "2024" edition = "2024"
rust-version = "1.85.0" rust-version = "1.85.0"
authors = [ authors = [

5
curve25519-dalek/README.md
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@ -30,12 +30,10 @@ cofactor-related abstraction mismatches.
# Use # Use
## Stable
To import `curve25519-dalek`, add the following to the dependencies section of To import `curve25519-dalek`, add the following to the dependencies section of
your project's `Cargo.toml`: your project's `Cargo.toml`:
```toml ```toml
curve25519-dalek = "5.0.0-pre.6" curve25519-dalek = "5.0.0-rc.0"
``` ```
If opting into [SemVer-exempted features](#public-api-semver-exemptions) a range If opting into [SemVer-exempted features](#public-api-semver-exemptions) a range
@ -74,6 +72,7 @@ latest breaking changes in high level are below:
* Remove deprecated functions `FieldElement::as_bytes()` and `EdwardsPoint::nonspec_map_to_curve()` * Remove deprecated functions `FieldElement::as_bytes()` and `EdwardsPoint::nonspec_map_to_curve()`
* Use constant-time equality testing for compressed Ristretto and Edwards points, rather than autoderived equality * Use constant-time equality testing for compressed Ristretto and Edwards points, rather than autoderived equality
* Undeprecate `Scalar::from_bits()` * Undeprecate `Scalar::from_bits()`
* Remove `group` and `group-bits` features temporarily. Will reinstate once the underlying deps have a release.
# Backends # Backends

5
curve25519-dalek/src/lizard/lizard_ristretto.rs
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@ -70,8 +70,11 @@ impl RistrettoPoint {
if n_found == 1 { Some(result) } else { None } if n_found == 1 { Some(result) } else { None }
} }
/// Computes the at most 8 positive FieldElements f such that `self == /// Computes the at most 16 FieldElements f such that `self ==
/// RistrettoPoint::elligator_ristretto_flavor(f)`. /// RistrettoPoint::elligator_ristretto_flavor(f)`.
/// The first 8 return values are positive field elements (i.e., have the LSB (`bytes[0] & 1`)
/// unset), if defined. The last 8 return values are negative field elements (i.e., have the LSB
/// set), if defined.
fn elligator_ristretto_flavor_inverse(&self) -> [CtOption<FieldElement>; 16] { fn elligator_ristretto_flavor_inverse(&self) -> [CtOption<FieldElement>; 16] {
// Elligator2 computes a Point from a FieldElement in two steps: first // Elligator2 computes a Point from a FieldElement in two steps: first
// it computes a (s,t) on the Jacobi quartic and then computes the // it computes a (s,t) on the Jacobi quartic and then computes the

36
ed25519-dalek/CHANGELOG.md
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@ -8,48 +8,30 @@ Entries are listed in reverse chronological order per undeprecated major series.
# 3.x series # 3.x series
## 3.0.0-pre.7 ## 3.0.0-rc.0 - 2026-05-28
* Add allocation-free `EdwardsPoint::compress_batch` ([#832](https://github.com/dalek-cryptography/curve25519-dalek/pull/832))
* Add `strobe-rs` dependency and delete vendored STROBE impl ([#895](https://github.com/dalek-cryptography/curve25519-dalek/pull/895))
* Make signing and verifying keys use `pkcs8::spki::SignatureAlgorithmIdentifier` instead of `DynSignatureAlgorithmIdentifier` ([#779](https://github.com/dalek-cryptography/curve25519-dalek/pull/779))
* Impl `MultipartSigner` and `MultipartVerifier` for `SigningKey` and `VerifyingKey` ([#764](https://github.com/dalek-cryptography/curve25519-dalek/pull/764))
* Upgrade `ed25519` dependency to v3.0.0 * Upgrade `ed25519` dependency to v3.0.0
* Upgrade `signature` dependency to v3.0.0 * Upgrade `signature` dependency to v3.0.0
* Upgrade `sha3` dependency to v0.11 * Upgrade `sha2` and `sha3` dependencies to v0.11
* Upgrade `getrandom` dependency to v0.4 * Upgrade `getrandom` dependency to v0.4
* Upgrade `chacha20` dependency to v0.10 * Upgrade `chacha20` dependency to v0.10
* Add `strobe-rs` dependency and delete vendored STROBE impl
## 3.0.0-pre.6
* Upgrade `rand_core` dependency to v0.10.0 * Upgrade `rand_core` dependency to v0.10.0
* Upgrade `digest` and `sha2` deps
## 3.0.0-pre.5
* Upgrade `rand_core` dependency to v0.10.0-rc-6
## 3.0.0-pre.4
* Upgrade `rand_core` dependency to v0.10.0-rc-3
## 3.0.0-pre.3
* Upgrade `rand_core` dependency to v0.10.0-rc-2
## 3.0.0-pre.0
* Update edition to 2024 * Update edition to 2024
* Update the MSRV from 1.60 to 1.85 * Update the MSRV from 1.60 to 1.85
* Update `ed25519` and `signature` deps * Remove `std` feature now that `error::Error` is in `core`
* Remove `std` feature
* Make signing and verifying keys use `pkcs8::spki::SignatureAlgorithmIdentifier` instead of `DynSignatureAlgorithmIdentifier`
# 2.x series # 2.x series
## 2.2.0 ## 2.2.0 - 2025-07-08
* Add `hazmat`-gated methods `SigningKey::verify_stream()` and `VerifyingKey::verify_stream()` * Add `hazmat`-gated methods `SigningKey::verify_stream()` and `VerifyingKey::verify_stream()`
* Add `Debug` and `Eq` traits for `hazmat::ExpandedSecretKey` * Add `Debug` and `Eq` traits for `hazmat::ExpandedSecretKey`
## 2.1.1 ## 2.1.1 - 2024-02-06
* Fix nightly SIMD build * Fix nightly SIMD build

8
ed25519-dalek/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "ed25519-dalek" name = "ed25519-dalek"
version = "3.0.0-pre.7" version = "3.0.0-rc.0"
edition = "2024" edition = "2024"
authors = [ authors = [
"isis lovecruft <isis@patternsinthevoid.net>", "isis lovecruft <isis@patternsinthevoid.net>",
@ -28,7 +28,7 @@ rustdoc-args = [
all-features = true all-features = true
[dependencies] [dependencies]
curve25519-dalek = { version = "=5.0.0-pre.6", default-features = false, features = [ curve25519-dalek = { version = "5.0.0-rc.0", default-features = false, features = [
"digest", "digest",
] } ] }
ed25519 = { version = "3", default-features = false } ed25519 = { version = "3", default-features = false }
@ -44,11 +44,11 @@ zeroize = { version = "1.5", default-features = false, optional = true }
strobe-rs = { version = "0.13", optional = true } strobe-rs = { version = "0.13", optional = true }
[dev-dependencies] [dev-dependencies]
curve25519-dalek = { version = "=5.0.0-pre.6", default-features = false, features = [ curve25519-dalek = { version = "5.0.0-rc.0", default-features = false, features = [
"digest", "digest",
"rand_core", "rand_core",
] } ] }
x25519-dalek = { version = "=3.0.0-pre.6", default-features = false, features = [ x25519-dalek = { version = "3.0.0-rc.0", default-features = false, features = [
"static_secrets", "static_secrets",
] } ] }
blake2 = "0.11.0-rc.6" blake2 = "0.11.0-rc.6"

2
ed25519-dalek/README.md
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@ -8,7 +8,7 @@ verification.
To import `ed25519-dalek`, add the following to the dependencies section of To import `ed25519-dalek`, add the following to the dependencies section of
your project's `Cargo.toml`: your project's `Cargo.toml`:
```toml ```toml
ed25519-dalek = "3.0.0-pre.7" ed25519-dalek = "3.0.0-rc.0"
``` ```
# Feature Flags # Feature Flags

24
x25519-dalek/CHANGELOG.md
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@ -4,36 +4,20 @@ Entries are listed in reverse chronological order.
# 3.x Series # 3.x Series
## 3.0.0-pre.6 ## 3.0.0-rc.0 - 2026-05-28
* Upgrade `rand_core` dependency to v0.10.0
## 3.0.0-pre.5
* Upgrade `rand_core` dependency to v0.10.0-rc-6
## 3.0.0-pre.4
* Removed `alloc` feature flag, which was doing nothing
* Upgrade `rand_core` dependency to v0.10.0-rc-3
## 3.0.0-pre.3
* Upgrade `rand_core` dependency to v0.10.0-rc-2
## 3.0.0-pre.0
* Remove `alloc` feature flag, which was doing nothing
* Update edition to 2024 * Update edition to 2024
* Update the MSRV from 1.60 to 1.85 * Update the MSRV from 1.60 to 1.85
* Update `rand_core` dep
* Remove `Zeroize` impl for `x25519::{EphemeralSecret, ReusableSecret, SharedSecret, StaticSecret}` to prevent misuse. These are now only zeroized on drop. * Remove `Zeroize` impl for `x25519::{EphemeralSecret, ReusableSecret, SharedSecret, StaticSecret}` to prevent misuse. These are now only zeroized on drop.
* Remove deprecated functions `{Ephemeral,Reusable,Static}Secret::new()` * Remove deprecated functions `{Ephemeral,Reusable,Static}Secret::new()`
* Upgrade `rand_core` dependency to v0.10.0
# 2.x Series # 2.x Series
* Note: All `x255919-dalek` 2.x releases are in sync with the underlying `curve25519-dalek` 4.x releases. * Note: All `x255919-dalek` 2.x releases are in sync with the underlying `curve25519-dalek` 4.x releases.
## 2.0.1 ## 2.0.1 - 2024-02-06
* Fix nightly SIMD build * Fix nightly SIMD build

4
x25519-dalek/Cargo.toml
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@ -6,7 +6,7 @@ edition = "2024"
# - update html_root_url # - update html_root_url
# - update CHANGELOG # - update CHANGELOG
# - if any changes were made to README.md, mirror them in src/lib.rs docs # - if any changes were made to README.md, mirror them in src/lib.rs docs
version = "3.0.0-pre.6" version = "3.0.0-rc.0"
authors = [ authors = [
"Isis Lovecruft <isis@patternsinthevoid.net>", "Isis Lovecruft <isis@patternsinthevoid.net>",
"DebugSteven <debugsteven@gmail.com>", "DebugSteven <debugsteven@gmail.com>",
@ -42,7 +42,7 @@ rustdoc-args = [
all-features = true all-features = true
[dependencies] [dependencies]
curve25519-dalek = { version = "=5.0.0-pre.6", default-features = false } curve25519-dalek = { version = "5.0.0-rc.0", default-features = false }
rand_core = { version = "0.10", default-features = false } rand_core = { version = "0.10", default-features = false }
# optional dependencies # optional dependencies

2
x25519-dalek/README.md
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@ -103,7 +103,7 @@ To import `x25519-dalek`, add the following to your project's `Cargo.toml`:
```toml ```toml
[dependencies] [dependencies]
x25519-dalek = "3.0.0-pre.6" x25519-dalek = "3.0.0-rc.0"
``` ```
# Feature Flags # Feature Flags