Reworking bssl_crypto: digest
Change-Id: I43de22995908ea39b19aa03d167c62a9580ba7b1
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/65168
Reviewed-by: Bob Beck <bbe@google.com>
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Maurice Lam <yukl@google.com>
diff --git a/rust/bssl-crypto/src/lib.rs b/rust/bssl-crypto/src/lib.rs
index 022f5a3..dea522f 100644
--- a/rust/bssl-crypto/src/lib.rs
+++ b/rust/bssl-crypto/src/lib.rs
@@ -30,6 +30,9 @@
use core::ffi::c_void;
+#[macro_use]
+mod macros;
+
/// Authenticated Encryption with Additional Data algorithms.
pub mod aead;
@@ -39,7 +42,6 @@
/// Ciphers.
pub mod cipher;
-/// Hash functions.
pub mod digest;
/// Ed25519, a signature scheme.
@@ -247,6 +249,20 @@
fn as_ptr(&self) -> *mut Self::CType;
}
+/// Returns a BoringSSL structure that is initialized by some function.
+/// Requires that the given function completely initializes the value.
+///
+/// (Tagged `unsafe` because a no-op argument would otherwise expose
+/// uninitialized memory.)
+unsafe fn initialized_struct<T, F>(init: F) -> T
+where
+ F: FnOnce(*mut T),
+{
+ let mut out_uninit = core::mem::MaybeUninit::<T>::uninit();
+ init(out_uninit.as_mut_ptr());
+ unsafe { out_uninit.assume_init() }
+}
+
/// Wrap a closure that initializes an output buffer and return that buffer as
/// an array. Requires that the closure fully initialize the given buffer.
///
@@ -290,3 +306,8 @@
None
}
}
+
+/// Used to prevent external implementations of internal traits.
+mod sealed {
+ pub struct Sealed;
+}
