feat: upgrade crypto ecosystem to latest RustCrypto stack

Upgrade all core cryptographic dependencies to their latest versions:

Dependencies:
- digest: 0.10 to 0.11
- elliptic-curve: 0.13 to 0.14
- hkdf: 0.12 to 0.13
- hmac: 0.12 to 0.13
- rand: 0.8 to 0.10
- rand_chacha: 0.3 to 0.10
- sha2: 0.10 to 0.11
- getrandom: 0.2 to 0.4 (WASM)
- ml-kem: 0.3.0-rc.0 to 0.3
- ecdsa: 0.16 to 0.17.0-rc.23
- rfc6979: 0.4 to 0.6 (now internal to ecdsa)
- p256/p384/p521: 0.13 to 0.14.0-rc.15
- curve25519-dalek: 4 to 5.0.0-rc
- ed25519-dalek: 2 to 3.0.0-rc
- cryptoki: 0.9 to 0.12
- rustyline: 17 to 18
- scrypt: 0.11 to 0.12
- voprf replaced by voprf-vx 1.0.0-pre.0

Migration changes:
- generic-array 0.14 to 1.4 with hybrid-array 0.4 interop
- ArrayLength<u8> to ArrayLength (generic-array 1.x)
- Added ConcatExt trait to disambiguate from [T]::concat
- Replaced Hmac with SimpleHmac for digest 0.11 compatibility
- Added OutputSize<H>: ArrayLength bounds throughout Hash trait
- Converted hybrid_array::Array between GenericArray at API boundaries
- Updated GroupEncoding Repr bound to hybrid_array::Array
- ECDSA sign now uses ecdsa::hazmat::sign_prehashed_rfc6979
- Removed direct rfc6979 dependency (handled by ecdsa internally)
- Replaced bincode with postcard for no_std serialization
- Re-exported hybrid_array from crate root

Other changes:
- Renamed crate to opaque-vx
- Increased MSRV to 1.88
- Added cryptography to Cargo.toml categories
- Removed Facebook-specific contributions from CONTRIBUTING.md
- Removed v3 to v4 migration test
- Removed unstable rustfmt configurations for stable compatibility

README.md

@@ -1,20 +1,28 @@
-##  The OPAQUE key exchange protocol ![Build Status](https://github.com/facebook/opaque-ke/workflows/Rust%20CI/badge.svg)
+## The OPAQUE key exchange protocol
 
-[OPAQUE](https://eprint.iacr.org/2018/163.pdf) is an augmented password-authenticated key exchange protocol. It allows a client to authenticate to a server using a password, without ever having to expose the plaintext password to the server.
+[OPAQUE](https://eprint.iacr.org/2018/163.pdf) is an augmented password-authenticated key exchange protocol. It allows a
+client to authenticate to a server using a password, without ever having to expose the plaintext password to the server.
 
 This implementation is based on [RFC 9807](https://datatracker.ietf.org/doc/rfc9807/).
 
+This is a fork of [facebook/opaque-ke](https://github.com/facebook/opaque-ke) maintained
+by [VexaHub](https://github.com/vexahub), targeting the latest **RustCrypto ecosystem**.
+
 Background
 ----------
 
-Augmented Password Authenticated Key Exchange (aPAKE) protocols are designed to provide password authentication and mutually authenticated key exchange without relying on PKI (except during user/password registration) and without disclosing passwords to servers or other entities other than the client machine.
+Augmented Password Authenticated Key Exchange (aPAKE) protocols are designed to provide password authentication and
+mutually authenticated key exchange without relying on PKI (except during user/password registration) and without
+disclosing passwords to servers or other entities other than the client machine.
 
 OPAQUE is a PKI-free aPAKE that is secure against pre-computation attacks and capable of using a secret salt.
 
 Documentation
 -------------
 
-The API can be found [here](https://docs.rs/opaque-ke/) along with an example for usage. More examples can be found in the [examples](./examples) directory.
+The API can be found [here](https://docs.rs/opaque-ke-vx/) along with an example for usage. More examples can be found
+in
+the [examples](./examples) directory.
 
 Installation
 ------------
@@ -22,41 +30,52 @@ Installation
 Add the following line to the dependencies of your `Cargo.toml`:
 
 ```
-opaque-ke = "4.1.0-pre.2"
+opaque-ke = { package = "opaque-ke-vx", version = "1.0.0-pre.0" }
 ```
 
 ### Minimum Supported Rust Version
 
-Rust **1.87** or higher.
+Rust **1.88** or higher.
 
 Audit
 -----
 
-This library was audited by NCC Group in June of 2021. The audit was sponsored by WhatsApp for its use in [enabling end-to-end encrypted backups](https://engineering.fb.com/2021/09/10/security/whatsapp-e2ee-backups/).
+This library was audited by NCC Group in June of 2021. The audit was sponsored by WhatsApp for its use
+in [enabling end-to-end encrypted backups](https://engineering.fb.com/2021/09/10/security/whatsapp-e2ee-backups/).
 
-The audit found issues in release `v0.5.0`, and the fixes were subsequently incorporated into release `v1.2.0`. See the [full audit report here](https://research.nccgroup.com/2021/12/13/public-report-whatsapp-opaque-ke-cryptographic-implementation-review/).
+The audit found issues in release `v0.5.0`, and the fixes were subsequently incorporated into release `v1.2.0`. See
+the [full audit report here](https://research.nccgroup.com/2021/12/13/public-report-whatsapp-opaque-ke-cryptographic-implementation-review/).
 
 Resources
 ---------
 
-- [OPAQUE academic publication](https://eprint.iacr.org/2018/163.pdf), including formal definitions and a proof of security
+- [OPAQUE academic publication](https://eprint.iacr.org/2018/163.pdf), including formal definitions and a proof of
+  security
 - [RFC 9807](https://datatracker.ietf.org/doc/rfc9807/), containing a detailed (byte-level) specification for OPAQUE
-- ["Let's talk about PAKE"](https://blog.cryptographyengineering.com/2018/10/19/lets-talk-about-pake/), an introductory blog post written by Matthew Green that covers OPAQUE
+- ["Let's talk about PAKE"](https://blog.cryptographyengineering.com/2018/10/19/lets-talk-about-pake/), an introductory
+  blog post written by Matthew Green that covers OPAQUE
 - [@serenity-kit/opaque](https://github.com/serenity-kit/opaque), a WebAssembly package for this library
-- [opaque-wasm](https://github.com/marucjmar/opaque-wasm), a WebAssembly package for this library. A comparison between `@serenity-kit/opaque` and `opaque-wasm` can be found [here](https://opaque-documentation.netlify.app/docs/faq#how-does-it-compare-to-opaque-wasm)
-- [react-native-opaque](https://github.com/serenity-kit/react-native-opaque), a React Native package for this library matching the API of `@serenity-kit/opaque`
+- [opaque-wasm](https://github.com/marucjmar/opaque-wasm), a WebAssembly package for this library. A comparison between
+  `@serenity-kit/opaque` and `opaque-wasm` can be
+  found [here](https://opaque-documentation.netlify.app/docs/faq#how-does-it-compare-to-opaque-wasm)
+- [react-native-opaque](https://github.com/serenity-kit/react-native-opaque), a React Native package for this library
+  matching the API of `@serenity-kit/opaque`
 
 Contributors
 ------------
 
-The authors of this code are Kevin Lewi
-([@kevinlewi](https://github.com/kevinlewi)) and François Garillot ([@huitseeker](https://github.com/huitseeker)).
+This fork is maintained by [VexaHub](https://github.com/vexahub).
+
+The original authors are Kevin Lewi ([@kevinlewi](https://github.com/kevinlewi)) and François
+Garillot ([@huitseeker](https://github.com/huitseeker)).
 To learn more about contributing to this project, [see this document](./CONTRIBUTING.md).
 
 #### Acknowledgments
 
-Special thanks go to Hugo Krawczyk and Chris Wood for helping to clarify discrepancies and making suggestions for improving
-this implementation. Additional credit goes to @daxpedda for adding no_std support, p256 support, and making other general
+Special thanks go to Hugo Krawczyk and Chris Wood for helping to clarify discrepancies and making suggestions for
+improving
+this implementation. Additional credit goes to @daxpedda for adding no_std support, p256 support, and making other
+general
 improvements to the library.
 
 License