fixes #2317 -- restore compatibility with our MSRV and release openssl 0.9.68

Author: alex

openssl/CHANGELOG.md

@@ -2,6 +2,12 @@
 
 ## [Unreleased]
 
+## [v0.10.68] - 2024-10-16
+
+### Fixed
+
+* Fixed building on Rust 1.63.0 (our MSRV) with OpenSSL 3.2 or newer.
+
 ## [v0.10.67] - 2024-10-15
 
 ### Added
@@ -925,7 +931,8 @@
 
 Look at the [release tags] for information about older releases.
 
-[Unreleased]: https://github.com/sfackler/rust-openssl/compare/openssl-v0.10.67...master
+[Unreleased]: https://github.com/sfackler/rust-openssl/compare/openssl-v0.10.68...master
+[v0.10.68]: https://github.com/sfackler/rust-openssl/compare/openssl-v0.10.67...openssl-v0.10.68
 [v0.10.67]: https://github.com/sfackler/rust-openssl/compare/openssl-v0.10.66...openssl-v0.10.67
 [v0.10.66]: https://github.com/sfackler/rust-openssl/compare/openssl-v0.10.65...openssl-v0.10.66
 [v0.10.65]: https://github.com/sfackler/rust-openssl/compare/openssl-v0.10.64...openssl-v0.10.65

openssl/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "openssl"
-version = "0.10.67"
+version = "0.10.68"
 authors = ["Steven Fackler <[email protected]>"]
 license = "Apache-2.0"
 description = "OpenSSL bindings"

openssl/src/kdf.rs

@@ -25,10 +25,11 @@ impl Drop for EvpKdfCtx {
 cfg_if::cfg_if! {
     if #[cfg(all(ossl320, not(osslconf = "OPENSSL_NO_ARGON2")))] {
         use std::cmp;
-        use std::ffi::{c_char, c_void};
+        use std::ffi::c_void;
         use std::mem::MaybeUninit;
         use std::ptr;
         use foreign_types::ForeignTypeRef;
+        use libc::c_char;
         use crate::{cvt, cvt_p};
         use crate::lib_ctx::LibCtxRef;
         use crate::error::ErrorStack;