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>

2 files changed, 3 insertions, 5 deletions

diff --git a/src/metadata/drop.rs b/src/metadata/drop.rs
index ae9aefd..601a157 100644
--- a/src/metadata/drop.rs
+++ b/src/metadata/drop.rs
@@ -13,11 +13,9 @@ use std::{
     ops::Deref,
 };
 
+use digest::Digest;
 use log::warn;
-use sha2::{
-    Digest,
-    Sha512,
-};
+use sha2::Sha512;
 use signature::Verifier;
 
 use super::{
diff --git a/src/metadata/identity.rs b/src/metadata/identity.rs
index 8ded144..0b45731 100644
--- a/src/metadata/identity.rs
+++ b/src/metadata/identity.rs
@@ -20,10 +20,10 @@ use anyhow::{
     anyhow,
     ensure,
 };
+use digest::Digest;
 use hex::FromHex;
 use log::warn;
 use sha2::{
-    Digest,
     Sha256,
     Sha512,
 };