Track update to bouncycastle 1.54

Change-Id: I87252e179e191c6210d26e4055bee03fb43d8ba7
diff --git a/verity/Utils.java b/verity/Utils.java
index 937c206..6d80276 100644
--- a/verity/Utils.java
+++ b/verity/Utils.java
@@ -258,10 +258,10 @@
 
     static boolean verify(PublicKey key, byte[] input, byte[] signature,
             AlgorithmIdentifier algId) throws Exception {
-        String algName = ID_TO_ALG.get(algId.getObjectId().getId());
+        String algName = ID_TO_ALG.get(algId.getAlgorithm().getId());
 
         if (algName == null) {
-            throw new IllegalArgumentException("Unsupported algorithm " + algId.getObjectId());
+            throw new IllegalArgumentException("Unsupported algorithm " + algId.getAlgorithm());
         }
 
         Signature verifier = Signature.getInstance(algName);