feat: Support for additional hash algorithms in canonicalization

Author: peacekeeper

src/main/java/com/danubetech/dataintegrity/canonicalizer/RDFC10Canonicalizer.java

@@ -26,14 +26,16 @@ public RDFC10Canonicalizer() {
         super(List.of("RDFC-1.0"));
     }
 
+    public abstract String hashAlgorithm();
     public abstract int hashLength();
     public abstract byte[] hash(byte[] input) throws GeneralSecurityException;
 
     @Override
     public String canonicalize(JsonLDObject jsonLDObject) throws JsonLDException, IOException {
 
         RdfDataset rdfDataset = jsonLDObject.toDataset();
-        Collection<RdfNQuad> rdfNQuads = RdfCanonicalizer.canonicalize(rdfDataset.toList());
+        RdfCanonicalizer rdfCanonicalizer = RdfCanonicalizer.newInstance(rdfDataset.toList());
+        Collection<RdfNQuad> rdfNQuads = rdfCanonicalizer.canonicalize();
         StringWriter stringWriter = new StringWriter();
         NQuadsWriter nQuadsWriter = new NQuadsWriter(stringWriter);
         for (RdfNQuad rdfNQuad : rdfNQuads) nQuadsWriter.write(rdfNQuad);

src/main/java/com/danubetech/dataintegrity/canonicalizer/RDFC10SHA256Canonicalizer.java

@@ -12,6 +12,11 @@ public static RDFC10SHA256Canonicalizer getInstance() {
         return INSTANCE;
     }
 
+    @Override
+    public String hashAlgorithm() {
+        return "SHA-256";
+    }
+
     @Override
     public int hashLength() {
         return 32;

src/main/java/com/danubetech/dataintegrity/canonicalizer/RDFC10SHA384Canonicalizer.java

@@ -12,6 +12,11 @@ public static RDFC10SHA384Canonicalizer getInstance() {
         return INSTANCE;
     }
 
+    @Override
+    public String hashAlgorithm() {
+        return "SHA-384";
+    }
+
     @Override
     public int hashLength() {
         return 48;

src/main/java/com/danubetech/dataintegrity/canonicalizer/RDFC10SHA512Canonicalizer.java

@@ -12,6 +12,11 @@ public static RDFC10SHA512Canonicalizer getInstance() {
         return INSTANCE;
     }
 
+    @Override
+    public String hashAlgorithm() {
+        return "SHA-512";
+    }
+
     @Override
     public int hashLength() {
         return 64;