fix: Avoid NPE when certain hash operations fail

Author: BenBE

TLS/src/test/java/de/rub/nds/tlsattacker/tls/crypto/TlsMessageDigestTest.java

@@ -143,11 +143,11 @@ public void testUpdate() {
 	TlsMessageDigest digestTest = null;
 	try {
 	    digestTest = new TlsMessageDigest(DigestAlgorithm.LEGACY);
+	    digestTest.setRawBytes(result);
+	    assertArrayEquals(digestTest.digest(), digresult);
 	} catch (NoSuchAlgorithmException ex) {
 	    Logger.getLogger(TlsMessageDigestTest.class.getName()).log(Level.SEVERE, null, ex);
 	}
-	digestTest.setRawBytes(result);
-	assertArrayEquals(digestTest.digest(), digresult);
 	digest1.setRawBytes(testarray);
 	digest1.update(testarray2); // sollte byte Array anhängen
 	result = digest1.getRawBytes();
@@ -163,11 +163,11 @@ public void testUpdate() {
 	digestTest = null;
 	try {
 	    digestTest = new TlsMessageDigest(DigestAlgorithm.LEGACY);
+	    digestTest.setRawBytes(result);
+	    assertArrayEquals(digestTest.digest(), digresult);
 	} catch (NoSuchAlgorithmException ex) {
 	    Logger.getLogger(TlsMessageDigestTest.class.getName()).log(Level.SEVERE, null, ex);
 	}
-	digestTest.setRawBytes(result);
-	assertArrayEquals(digestTest.digest(), digresult);
 	digest1.setRawBytes(testarray);
 	int testLength = 2;
 	int testPosition = 2;
@@ -187,11 +187,11 @@ public void testUpdate() {
 	digestTest = null;
 	try {
 	    digestTest = new TlsMessageDigest(DigestAlgorithm.LEGACY);
+	    digestTest.setRawBytes(result);
+	    assertArrayEquals(digestTest.digest(), digresult);
 	} catch (NoSuchAlgorithmException ex) {
 	    Logger.getLogger(TlsMessageDigestTest.class.getName()).log(Level.SEVERE, null, ex);
 	}
-	digestTest.setRawBytes(result);
-	assertArrayEquals(digestTest.digest(), digresult);
     }
 
     /**
@@ -247,6 +247,8 @@ public void testReset() {
 	} catch (NoSuchAlgorithmException ex) {
 	    e = ex;
 	    LOGGER.info("Could not Create default Digest with ProtocolVersion TLS10 Constructor");
+	    fail();
+	    return;
 	}
 	assertNull(e);
 	digest1.digest();