From 6eebf3f29b9658a4e74ab1d1f90146c8e029c736 Mon Sep 17 00:00:00 2001
From: CGantert345 <57003061+CGantert345@users.noreply.github.com>
Date: Mon, 28 Jun 2021 17:28:50 +0200
Subject: - option to use a dedicated security provider implementation

---
 .../org/uic/barcode/staticFrame/StaticFrame.java   | 75 +++++++++++++++++++++-
 1 file changed, 73 insertions(+), 2 deletions(-)

(limited to 'src/main/java/org/uic/barcode/staticFrame/StaticFrame.java')

diff --git a/src/main/java/org/uic/barcode/staticFrame/StaticFrame.java b/src/main/java/org/uic/barcode/staticFrame/StaticFrame.java
index 2759bf0..8dc1adb 100644
--- a/src/main/java/org/uic/barcode/staticFrame/StaticFrame.java
+++ b/src/main/java/org/uic/barcode/staticFrame/StaticFrame.java
@@ -677,6 +677,39 @@ public class StaticFrame {
 		sig.update(getDataForSignature());
 		return sig.verify(this.getSignature());
 	}
+
+	/**
+	 * Verify the signature
+	 * 
+	 * Note:  an appropriate security provider (e.g. BC) must be registered before 
+	 *
+	 * @param key the key
+	 * @param singningAlg the Object ID of the signing algorithm
+	 * @param a dedicated security provider to validate the signature
+	 * @return true, if successful
+	 * @throws InvalidKeyException the invalid key exception
+	 * @throws NoSuchAlgorithmException the no such algorithm exception
+	 * @throws SignatureException the signature exception
+	 * @throws IllegalArgumentException the illegal argument exception
+	 * @throws UnsupportedOperationException the unsupported operating exception
+	 * @throws EncodingFormatException 
+	 * @throws IOException 
+	 */
+	public boolean verifyByAlgorithmOid(PublicKey key, String signingAlg, Provider prov) throws InvalidKeyException, NoSuchAlgorithmException, SignatureException, IllegalArgumentException, UnsupportedOperationException, IOException, EncodingFormatException {
+		//find the algorithm name for the signature OID
+		String algo = null;
+        Service service = prov.getService("Signature",signingAlg);
+	    if (service != null) {
+	    	algo = service.getAlgorithm();
+	    }
+		if (algo == null) {
+			throw new NoSuchAlgorithmException("No service for algorithm found: " + signingAlg);
+		}
+		Signature sig = Signature.getInstance(algo);
+		sig.initVerify(key);
+		sig.update(getDataForSignature());
+		return sig.verify(this.getSignature());
+	}
 	
 	/**
 	 * Sign the contained data block.
@@ -695,14 +728,51 @@ public class StaticFrame {
 	public void signByAlgorithmOID(PrivateKey key,String signingAlg) throws NoSuchAlgorithmException, InvalidKeyException, SignatureException, IOException, EncodingFormatException {
 		//find the algorithm name for the signature OID
 		String algo = null;
+		algo = getAlgo(signingAlg);
+		if (algo == null) {
+			throw new NoSuchAlgorithmException("No service for algorthm found: " + signingAlg);
+		}
+		Signature sig = Signature.getInstance(algo);
+		sig.initSign(key);
+		signedData = getDataForSignature();
+		sig.update(signedData);
+		signature = sig.sign();
+	}
+	
+	private String getAlgo(String signingAlg) {
 		Provider[] provs = Security.getProviders();
 		for (Provider prov : provs) {
 	       Service service = prov.getService("Signature",signingAlg);
 	       if (service != null) {
-	    	   algo = service.getAlgorithm();
-	    	   break;
+	    	   return service.getAlgorithm();
 	       }
 		}
+		return null;
+	}
+
+
+
+	/**
+	 * Sign the contained data block.
+	 * 
+	 * Note:  an appropriate security provider (e.g. BC) must be registered before 
+	 *
+	 * @param key the key
+	 * @param singningAlg the Object ID of the signing algorithm
+	 * @return 
+	 * @throws NoSuchAlgorithmException the no such algorithm exception
+	 * @throws InvalidKeyException the invalid key exception
+	 * @throws SignatureException the signature exception
+	 * @throws EncodingFormatException 
+	 * @throws IOException 
+	 */
+	public void signByAlgorithmOID(PrivateKey key,String signingAlg, Provider prov) throws NoSuchAlgorithmException, InvalidKeyException, SignatureException, IOException, EncodingFormatException {
+		//find the algorithm name for the signature OID
+		String algo = null;
+        Service service = prov.getService("Signature",signingAlg);
+	    if (service != null) {
+	      algo = service.getAlgorithm();
+	    }
 		if (algo == null) {
 			throw new NoSuchAlgorithmException("No service for algorthm found: " + signingAlg);
 		}
@@ -713,6 +783,7 @@ public class StaticFrame {
 		signature = sig.sign();
 	}
 	
+	
 	/**
 	 * Sign the contained data block.
 	 * 
-- 
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