core: replace bundle checksum with BLAKE3

BLAKE3 has a verified streaming mode (Bao), which allows variable chunk
sizes without altering the root hash. This means that a BLAKE3 hash can
serve as a long-term stable content address in location-independent
storage (as demonstrated by iroh).

Signed-off-by: Kim Altintop <kim@eagain.io>

1 files changed, 2 insertions, 4 deletions

diff --git a/src/metadata.rs b/src/metadata.rs
index 2da268f..378f462 100644
--- a/src/metadata.rs
+++ b/src/metadata.rs
@@ -15,11 +15,9 @@ use std::{
     ops::DerefMut,
 };
 
+use digest::Digest;
 use serde::ser::SerializeSeq;
-use sha2::{
-    Digest,
-    Sha512,
-};
+use sha2::Sha512;
 use time::{
     Duration,
     OffsetDateTime,