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-rw-r--r--tvix/store/src/proto/mod.rs11
1 files changed, 9 insertions, 2 deletions
diff --git a/tvix/store/src/proto/mod.rs b/tvix/store/src/proto/mod.rs
index 528d0fb061..4db0b9731e 100644
--- a/tvix/store/src/proto/mod.rs
+++ b/tvix/store/src/proto/mod.rs
@@ -17,6 +17,8 @@ pub use grpc_blobservice_wrapper::GRPCBlobServiceWrapper;
 pub use grpc_directoryservice_wrapper::GRPCDirectoryServiceWrapper;
 pub use grpc_pathinfoservice_wrapper::GRPCPathInfoServiceWrapper;
 
+use crate::B3Digest;
+
 tonic::include_proto!("tvix.store.v1");
 
 #[cfg(feature = "reflection")]
@@ -238,10 +240,15 @@ impl Directory {
 
     /// Calculates the digest of a Directory, which is the blake3 hash of a
     /// Directory protobuf message, serialized in protobuf canonical form.
-    pub fn digest(&self) -> [u8; 32] {
+    pub fn digest(&self) -> B3Digest {
         let mut hasher = blake3::Hasher::new();
 
-        *hasher.update(&self.encode_to_vec()).finalize().as_bytes()
+        let vec = hasher
+            .update(&self.encode_to_vec())
+            .finalize()
+            .as_bytes()
+            .to_vec();
+        B3Digest::from_vec(vec).unwrap()
     }
 
     /// validate checks the directory for invalid data, such as: