1 files changed, 0 insertions, 175 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/engines/RFC3211WrapEngine.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/engines/RFC3211WrapEngine.java
deleted file mode 100644
index f55a717a3..000000000
--- a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/engines/RFC3211WrapEngine.java
+++ /dev/null
@@ -1,175 +0,0 @@
-package org.spongycastle.crypto.engines;
-
-import org.spongycastle.crypto.BlockCipher;
-import org.spongycastle.crypto.CipherParameters;
-import org.spongycastle.crypto.InvalidCipherTextException;
-import org.spongycastle.crypto.Wrapper;
-import org.spongycastle.crypto.modes.CBCBlockCipher;
-import org.spongycastle.crypto.params.ParametersWithIV;
-import org.spongycastle.crypto.params.ParametersWithRandom;
-
-import java.security.SecureRandom;
-
-/**
- * an implementation of the RFC 3211 Key Wrap
- * Specification.
- */
-public class RFC3211WrapEngine
-    implements Wrapper
-{
-    private CBCBlockCipher   engine;
-    private ParametersWithIV param;
-    private boolean          forWrapping;
-    private SecureRandom     rand;
-
-    public RFC3211WrapEngine(BlockCipher engine)
-    {
-        this.engine = new CBCBlockCipher(engine);
-    }
-
-    public void init(
-        boolean          forWrapping,
-        CipherParameters param)
-    {
-        this.forWrapping = forWrapping;
-
-        if (param instanceof ParametersWithRandom)
-        {
-            ParametersWithRandom p = (ParametersWithRandom)param;
-
-            rand = p.getRandom();
-            this.param = (ParametersWithIV)p.getParameters();
-        }
-        else
-        {
-            if (forWrapping)
-            {
-                rand = new SecureRandom();
-            }
-
-            this.param = (ParametersWithIV)param;
-        }
-    }
-
-    public String getAlgorithmName()
-    {
-        return engine.getUnderlyingCipher().getAlgorithmName() + "/RFC3211Wrap";
-    }
-
-    public byte[] wrap(
-        byte[]  in,
-        int     inOff,
-        int     inLen)
-    {
-        if (!forWrapping)
-        {
-            throw new IllegalStateException("not set for wrapping");
-        }
-
-        engine.init(true, param);
-
-        int blockSize = engine.getBlockSize();
-        byte[] cekBlock;
-
-        if (inLen + 4 < blockSize * 2)
-        {
-            cekBlock = new byte[blockSize * 2];
-        }
-        else
-        {
-            cekBlock = new byte[(inLen + 4) % blockSize == 0 ? inLen + 4 : ((inLen + 4) / blockSize + 1) * blockSize];
-        }
-
-        cekBlock[0] = (byte)inLen;
-        cekBlock[1] = (byte)~in[inOff];
-        cekBlock[2] = (byte)~in[inOff + 1];
-        cekBlock[3] = (byte)~in[inOff + 2];
-
-        System.arraycopy(in, inOff, cekBlock, 4, inLen);
-
-        for (int i = inLen + 4; i < cekBlock.length; i++)
-        {
-            cekBlock[i] = (byte)rand.nextInt();
-        }
-
-        for (int i = 0; i < cekBlock.length; i += blockSize)
-        {
-            engine.processBlock(cekBlock, i, cekBlock, i);
-        }
-
-        for (int i = 0; i < cekBlock.length; i += blockSize)
-        {
-            engine.processBlock(cekBlock, i, cekBlock, i);
-        }
-
-        return cekBlock;
-    }
-
-    public byte[] unwrap(
-        byte[]  in,
-        int     inOff,
-        int     inLen)
-        throws InvalidCipherTextException
-    {
-        if (forWrapping)
-        {
-            throw new IllegalStateException("not set for unwrapping");
-        }
-
-        int blockSize = engine.getBlockSize();
-
-        if (inLen < 2 * blockSize)
-        {
-            throw new InvalidCipherTextException("input too short");
-        }
-        
-        byte[] cekBlock = new byte[inLen];
-        byte[] iv = new byte[blockSize];
-
-        System.arraycopy(in, inOff, cekBlock, 0, inLen);
-        System.arraycopy(in, inOff, iv, 0, iv.length);
-        
-        engine.init(false, new ParametersWithIV(param.getParameters(), iv));
-
-        for (int i = blockSize; i < cekBlock.length; i += blockSize)
-        {
-            engine.processBlock(cekBlock, i, cekBlock, i);    
-        }
-
-        System.arraycopy(cekBlock, cekBlock.length - iv.length, iv, 0, iv.length);
-
-        engine.init(false, new ParametersWithIV(param.getParameters(), iv));
-
-        engine.processBlock(cekBlock, 0, cekBlock, 0);
-
-        engine.init(false, param);
-
-        for (int i = 0; i < cekBlock.length; i += blockSize)
-        {
-            engine.processBlock(cekBlock, i, cekBlock, i);
-        }
-
-        if ((cekBlock[0] & 0xff) > cekBlock.length - 4)
-        {
-            throw new InvalidCipherTextException("wrapped key corrupted");
-        }
-
-        byte[] key = new byte[cekBlock[0] & 0xff];
-
-        System.arraycopy(cekBlock, 4, key, 0, cekBlock[0]);
-
-        // Note: Using constant time comparison
-        int nonEqual = 0;
-        for (int i = 0; i != 3; i++)
-        {
-            byte check = (byte)~cekBlock[1 + i];
-            nonEqual |= (check ^ key[i]);
-        }
-        if (nonEqual != 0)
-        {
-            throw new InvalidCipherTextException("wrapped key fails checksum");
-        }
-
-        return key;
-    }
-}