Remove dependency on rust-crypto

This library has been flagged as unmaintained and we only used
it to compute a hash, which we can also easily do via libgit

Change-Id: rm-rust-crypto

Author: christian-schilling

Cargo.lock

@@ -35,7 +35,6 @@ lazy_static = "1.4.0"
 josh = {path = "../"}
 serde_json= "1.0.81"
 serde= "1.0.137"
-rust-crypto = "0.2.36"
 unindent = "0.1.9"
 juniper = { version = "0.15.7", features = ["expose-test-schema"] }
 url = "2.2.2"

josh-proxy/Cargo.toml

@@ -121,11 +121,11 @@ pub fn strip_auth(
     let header: Option<hyper::header::HeaderValue> = req.headers_mut().remove("authorization");
 
     if let Some(header) = header {
-        use crypto::digest::Digest;
-        let mut d = crypto::sha1::Sha1::new();
-        d.input(header.as_bytes());
         let hp = Handle {
-            hash: d.result_str(),
+            hash: format!(
+                "{:?}",
+                git2::Oid::hash_object(git2::ObjectType::Blob, header.as_bytes())?
+            ),
         };
         let p = Header {
             header: Some(header),