1 files changed, 0 insertions, 109 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/modes/GCFBBlockCipher.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/modes/GCFBBlockCipher.java
deleted file mode 100644
index 41e26fc17..000000000
--- a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/modes/GCFBBlockCipher.java
+++ /dev/null
@@ -1,109 +0,0 @@
-package org.spongycastle.crypto.modes;
-
-import org.spongycastle.crypto.BlockCipher;
-import org.spongycastle.crypto.CipherParameters;
-import org.spongycastle.crypto.DataLengthException;
-import org.spongycastle.crypto.params.KeyParameter;
-import org.spongycastle.crypto.params.ParametersWithIV;
-import org.spongycastle.crypto.params.ParametersWithRandom;
-import org.spongycastle.crypto.params.ParametersWithSBox;
-
-/**
- * An implementation of the GOST CFB mode with CryptoPro key meshing as described in RFC 4357.
- */
-public class GCFBBlockCipher
-    implements BlockCipher
-{
-    private static final byte[] C =
-        {
-            0x69, 0x00, 0x72, 0x22, 0x64, (byte)0xC9, 0x04, 0x23,
-            (byte)0x8D, 0x3A, (byte)0xDB, (byte)0x96, 0x46, (byte)0xE9, 0x2A, (byte)0xC4,
-            0x18, (byte)0xFE, (byte)0xAC, (byte)0x94, 0x00, (byte)0xED, 0x07, 0x12,
-            (byte)0xC0, (byte)0x86, (byte)0xDC, (byte)0xC2, (byte)0xEF, 0x4C, (byte)0xA9, 0x2B
-        };
-
-    private final CFBBlockCipher cfbEngine;
-
-    private KeyParameter key;
-    private long         counter = 0;
-    private boolean      forEncryption;
-
-    public GCFBBlockCipher(BlockCipher engine)
-    {
-        this.cfbEngine = new CFBBlockCipher(engine, engine.getBlockSize() * 8);
-    }
-
-    public void init(boolean forEncryption, CipherParameters params)
-        throws IllegalArgumentException
-    {
-        counter = 0;
-        cfbEngine.init(forEncryption, params);
-
-        this.forEncryption = forEncryption;
-
-        if (params instanceof ParametersWithIV)
-        {
-            params = ((ParametersWithIV)params).getParameters();
-        }
-
-        if (params instanceof ParametersWithRandom)
-        {
-            params = ((ParametersWithRandom)params).getParameters();
-        }
-
-        if (params instanceof ParametersWithSBox)
-        {
-            params = ((ParametersWithSBox)params).getParameters();
-        }
-
-        key = (KeyParameter)params;
-    }
-
-    public String getAlgorithmName()
-    {
-        return "G" + cfbEngine.getAlgorithmName();
-    }
-
-    public int getBlockSize()
-    {
-        return cfbEngine.getBlockSize();
-    }
-
-    public int processBlock(byte[] in, int inOff, byte[] out, int outOff)
-        throws DataLengthException, IllegalStateException
-    {
-        if (counter > 0 && counter % 1024 == 0)
-        {
-            BlockCipher  base = cfbEngine.getUnderlyingCipher();
-
-            base.init(false, key);
-
-            byte[] nextKey = new byte[32];
-
-            base.processBlock(C, 0, nextKey, 0);
-            base.processBlock(C, 8, nextKey, 8);
-            base.processBlock(C, 16, nextKey, 16);
-            base.processBlock(C, 24, nextKey, 24);
-
-            key = new KeyParameter(nextKey);
-
-            byte[] iv = new byte[8];
-
-            base.init(true, key);
-
-            base.processBlock(cfbEngine.getCurrentIV(), 0, iv, 0);
-
-            cfbEngine.init(forEncryption, new ParametersWithIV(key, iv));
-        }
-
-        counter += cfbEngine.getBlockSize();
-
-        return cfbEngine.processBlock(in, inOff, out, outOff);
-    }
-
-    public void reset()
-    {
-        counter = 0;
-        cfbEngine.reset();
-    }
-}