From 4fb1d429eba15019cfefa75d589f2479c94fee71 Mon Sep 17 00:00:00 2001
From: Charles Edward Gagnon <charlesedgagnon@gmail.com>
Date: Sun, 6 Jul 2025 16:27:11 -0400
Subject: [PATCH 1/3] remove: prehashSignature

---
 signature/src/lib.rs               |  6 ------
 signature/src/prehash_signature.rs | 26 --------------------------
 2 files changed, 32 deletions(-)
 delete mode 100644 signature/src/prehash_signature.rs

diff --git a/signature/src/lib.rs b/signature/src/lib.rs
index b8678e329..6f8d5bc3c 100644
--- a/signature/src/lib.rs
+++ b/signature/src/lib.rs
@@ -140,13 +140,7 @@ mod keypair;
 mod signer;
 mod verifier;
 
-#[cfg(feature = "digest")]
-mod prehash_signature;
-
 pub use crate::{encoding::*, error::*, keypair::*, signer::*, verifier::*};
 
-#[cfg(feature = "digest")]
-pub use {crate::prehash_signature::*, digest};
-
 #[cfg(feature = "rand_core")]
 pub use rand_core;
diff --git a/signature/src/prehash_signature.rs b/signature/src/prehash_signature.rs
deleted file mode 100644
index 773dc6ff9..000000000
--- a/signature/src/prehash_signature.rs
+++ /dev/null
@@ -1,26 +0,0 @@
-//! `PrehashSignature` trait.
-
-/// For intra-doc link resolution.
-#[allow(unused_imports)]
-use crate::{
-    signer::{DigestSigner, Signer},
-    verifier::{DigestVerifier, Verifier},
-};
-
-/// Marker trait for `Signature` types computable as `𝐒(𝐇(𝒎))`
-/// i.e. ones which prehash a message to be signed as `𝐇(𝒎)`
-///
-/// Where:
-///
-/// - `𝐒`: signature algorithm
-/// - `𝐇`: hash (a.k.a. digest) function
-/// - `𝒎`: message
-///
-/// This approach is relatively common in signature schemes based on the
-/// [Fiat-Shamir heuristic].
-///
-/// [Fiat-Shamir heuristic]: https://en.wikipedia.org/wiki/Fiat%E2%80%93Shamir_heuristic
-pub trait PrehashSignature {
-    /// Preferred `Digest` algorithm to use when computing this signature type.
-    type Digest: digest::Digest;
-}

From fa736bb348cf0c2a8e2ba7d27df18402c32f9426 Mon Sep 17 00:00:00 2001
From: Charles Edward Gagnon <charlesedgagnon@gmail.com>
Date: Sun, 6 Jul 2025 16:28:01 -0400
Subject: [PATCH 2/3] update: changelog

---
 signature/CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/signature/CHANGELOG.md b/signature/CHANGELOG.md
index 619aa4e92..4eeb0c2cf 100644
--- a/signature/CHANGELOG.md
+++ b/signature/CHANGELOG.md
@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `std` feature - replaced with `core::error::Error`
 - `derive` feature
 - `SignerMut` blanket implementation for `Signer`
+- `PrehashSignature` trait
 
 [#1448]: https://github.com/RustCrypto/traits/pull/1448
 [#1759]: https://github.com/RustCrypto/traits/pull/1759

From afd29adceb0e1df1c4442657667943f0e3bf0268 Mon Sep 17 00:00:00 2001
From: Charles Edward Gagnon <charlesedgagnon@gmail.com>
Date: Sun, 6 Jul 2025 16:48:58 -0400
Subject: [PATCH 3/3] fix: accidently removed digest re-export

---
 signature/src/lib.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/signature/src/lib.rs b/signature/src/lib.rs
index 6f8d5bc3c..2baa59f1b 100644
--- a/signature/src/lib.rs
+++ b/signature/src/lib.rs
@@ -140,6 +140,9 @@ mod keypair;
 mod signer;
 mod verifier;
 
+#[cfg(feature = "digest")]
+pub use digest;
+
 pub use crate::{encoding::*, error::*, keypair::*, signer::*, verifier::*};
 
 #[cfg(feature = "rand_core")]