rm bc encryption provider

Author: jeqo

benchmarks/src/main/java/io/aiven/kafka/tieredstorage/benchs/transform/AesKeyAware.java

@@ -18,28 +18,20 @@
 
 import javax.crypto.Cipher;
 import javax.crypto.NoSuchPaddingException;
-import javax.crypto.spec.IvParameterSpec;
+import javax.crypto.spec.GCMParameterSpec;
 import javax.crypto.spec.SecretKeySpec;
 
 import java.security.InvalidAlgorithmParameterException;
 import java.security.InvalidKeyException;
 import java.security.NoSuchAlgorithmException;
-import java.security.NoSuchProviderException;
 import java.security.SecureRandom;
-import java.security.Security;
 import java.util.Random;
 
-import org.bouncycastle.jce.provider.BouncyCastleProvider;
-
 public class AesKeyAware {
     protected static int ivSize;
     protected static SecretKeySpec secretKey;
     protected static byte[] aad;
 
-    static {
-        Security.addProvider(new BouncyCastleProvider());
-    }
-
     static void initCrypto() {
         // These are tests, we don't need a secure source of randomness.
         final Random random = new Random();
@@ -69,7 +61,7 @@ protected static Cipher decryptionCipherSupplier(final byte[] encryptedChunk) {
         try {
             final Cipher encryptCipher = getCipher();
             encryptCipher.init(Cipher.DECRYPT_MODE, secretKey,
-                new IvParameterSpec(encryptedChunk, 0, ivSize),
+                new GCMParameterSpec(128, encryptedChunk, 0, ivSize),
                 SecureRandom.getInstanceStrong());
             encryptCipher.updateAAD(aad);
             return encryptCipher;
@@ -80,8 +72,8 @@ protected static Cipher decryptionCipherSupplier(final byte[] encryptedChunk) {
 
     protected static Cipher getCipher() {
         try {
-            return Cipher.getInstance("AES/GCM/NoPadding", "BC");
-        } catch (final NoSuchAlgorithmException | NoSuchProviderException | NoSuchPaddingException e) {
+            return Cipher.getInstance("AES/GCM/NoPadding");
+        } catch (final NoSuchAlgorithmException | NoSuchPaddingException e) {
             throw new RuntimeException(e);
         }
     }