Simplify opaque types

Cargo.toml

@@ -25,7 +25,6 @@ jwt = "0.13"
 ldap3_server = "*"
 lldap_model = { path = "model" }
 log = "*"
-opaque-ke = "0.5"
 serde = "*"
 serde_json = "1"
 sha2 = "0.9"
@@ -40,6 +39,11 @@ tracing-log = "*"
 tracing-subscriber = "*"
 rand = { version = "0.8", features = ["small_rng", "getrandom"] }
 
+# TODO: update to 0.6 when out.
+[dependencies.opaque-ke]
+git = "https://github.com/novifinancial/opaque-ke"
+rev = "cd85efc603f5d98ed794cdd56a6e59236cce3d32"
+
 [dependencies.sqlx]
 version = "0.5.1"
 features = [