From 7e8218e9f40024412b7d813bf5052ed83036e3f3 Mon Sep 17 00:00:00 2001
From: Sachymetsu <sachymetsu@tutamail.com>
Date: Thu, 2 Apr 2026 07:43:08 +0200
Subject: [PATCH] BufferSlice reset method

---
 sachy-crypto/Cargo.toml | 8 +++++++-
 sachy-crypto/src/lib.rs | 8 ++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/sachy-crypto/Cargo.toml b/sachy-crypto/Cargo.toml
index c0ff474..dab2dc9 100644
--- a/sachy-crypto/Cargo.toml
+++ b/sachy-crypto/Cargo.toml
@@ -7,9 +7,15 @@ license.workspace = true
 version.workspace = true
 rust-version.workspace = true
 
+[features]
+alloc = ["chacha20poly1305/alloc"]
+
 [dependencies]
-chacha20poly1305 = { version = "=0.11.0-rc.3", default-features = false, features = ["getrandom", "alloc"] }
+chacha20poly1305 = { version = "=0.11.0-rc.3", default-features = false, features = ["getrandom"] }
 k256 = { version = "=0.14.0-rc.8", default-features = false, features = ["ecdh", "getrandom"] }
 sha2 = { version = "=0.11.0-rc.5", default-features = false, features = [] }
 dhkem = { version = "0.1.0-rc.0", features = ["getrandom", "k256"] }
 elliptic-curve = { version = "0.14.0-rc.28", default-features = false, features = ["ecdh"] }
+
+[dev-dependencies]
+chacha20poly1305 = { version = "=0.11.0-rc.3", default-features = false, features = ["getrandom", "alloc"] }
diff --git a/sachy-crypto/src/lib.rs b/sachy-crypto/src/lib.rs
index 4b7d837..48e4bdc 100644
--- a/sachy-crypto/src/lib.rs
+++ b/sachy-crypto/src/lib.rs
@@ -300,6 +300,10 @@ impl<'a> BufferSlice<'a> {
             slice,
         }
     }
+
+    pub fn reset(&mut self) {
+        self.end = self.slice.len();
+    }
 }
 
 impl AsRef<[u8]> for BufferSlice<'_> {
@@ -356,6 +360,10 @@ mod tests {
 
         assert_eq!(buf_slice.extend_from_slice(&[0,0,0,0,0,0]), Ok(()));
         assert_eq!(buf_slice.len(), 70);
+
+        buf_slice.reset();
+
+        assert_eq!(buf_slice.len(), 128);
     }
 
     #[test]
-- 
2.51.2