diff --git a/crypto/src/crypto/modes/SicBlockCipher.cs b/crypto/src/crypto/modes/SicBlockCipher.cs
index 07c5d1978..da7ed7859 100644
--- a/crypto/src/crypto/modes/SicBlockCipher.cs
+++ b/crypto/src/crypto/modes/SicBlockCipher.cs
@@ -5,52 +5,52 @@ using Org.BouncyCastle.Math;
namespace Org.BouncyCastle.Crypto.Modes
{
- /**
- * Implements the Segmented Integer Counter (SIC) mode on top of a simple
- * block cipher.
- */
- public class SicBlockCipher
- : IBlockCipher
- {
- private readonly IBlockCipher cipher;
- private readonly int blockSize;
- private readonly byte[] IV;
- private readonly byte[] counter;
- private readonly byte[] counterOut;
+ /**
+ * Implements the Segmented Integer Counter (SIC) mode on top of a simple
+ * block cipher.
+ */
+ public class SicBlockCipher
+ : IBlockCipher
+ {
+ private readonly IBlockCipher cipher;
+ private readonly int blockSize;
+ private readonly byte[] IV;
+ private readonly byte[] counter;
+ private readonly byte[] counterOut;
- /**
- * Basic constructor.
- *
- * @param c the block cipher to be used.
- */
- public SicBlockCipher(IBlockCipher cipher)
- {
- this.cipher = cipher;
- this.blockSize = cipher.GetBlockSize();
- this.IV = new byte[blockSize];
- this.counter = new byte[blockSize];
- this.counterOut = new byte[blockSize];
- }
+ /**
+ * Basic constructor.
+ *
+ * @param c the block cipher to be used.
+ */
+ public SicBlockCipher(IBlockCipher cipher)
+ {
+ this.cipher = cipher;
+ this.blockSize = cipher.GetBlockSize();
+ this.IV = new byte[blockSize];
+ this.counter = new byte[blockSize];
+ this.counterOut = new byte[blockSize];
+ }
- /**
- * return the underlying block cipher that we are wrapping.
- *
- * @return the underlying block cipher that we are wrapping.
- */
- public IBlockCipher GetUnderlyingCipher()
- {
- return cipher;
- }
+ /**
+ * return the underlying block cipher that we are wrapping.
+ *
+ * @return the underlying block cipher that we are wrapping.
+ */
+ public IBlockCipher GetUnderlyingCipher()
+ {
+ return cipher;
+ }
- public void Init(
- bool forEncryption, //ignored by this CTR mode
- ICipherParameters parameters)
- {
- if (parameters is ParametersWithIV)
- {
- ParametersWithIV ivParam = (ParametersWithIV) parameters;
- byte[] iv = ivParam.GetIV();
- Array.Copy(iv, 0, IV, 0, IV.Length);
+ public void Init(
+ bool forEncryption, //ignored by this CTR mode
+ ICipherParameters parameters)
+ {
+ if (parameters is ParametersWithIV)
+ {
+ ParametersWithIV ivParam = (ParametersWithIV) parameters;
+ byte[] iv = ivParam.GetIV();
+ Array.Copy(iv, 0, IV, 0, IV.Length);
Reset();
@@ -59,57 +59,57 @@ namespace Org.BouncyCastle.Crypto.Modes
{
cipher.Init(true, ivParam.Parameters);
}
- }
- else
- {
- throw new ArgumentException("SIC mode requires ParametersWithIV", "parameters");
- }
- }
+ }
+ else
+ {
+ throw new ArgumentException("SIC mode requires ParametersWithIV", "parameters");
+ }
+ }
- public string AlgorithmName
- {
- get { return cipher.AlgorithmName + "/SIC"; }
- }
+ public string AlgorithmName
+ {
+ get { return cipher.AlgorithmName + "/SIC"; }
+ }
- public bool IsPartialBlockOkay
- {
- get { return true; }
- }
+ public bool IsPartialBlockOkay
+ {
+ get { return true; }
+ }
- public int GetBlockSize()
- {
- return cipher.GetBlockSize();
- }
+ public int GetBlockSize()
+ {
+ return cipher.GetBlockSize();
+ }
- public int ProcessBlock(
- byte[] input,
- int inOff,
- byte[] output,
- int outOff)
- {
- cipher.ProcessBlock(counter, 0, counterOut, 0);
+ public int ProcessBlock(
+ byte[] input,
+ int inOff,
+ byte[] output,
+ int outOff)
+ {
+ cipher.ProcessBlock(counter, 0, counterOut, 0);
- //
- // XOR the counterOut with the plaintext producing the cipher text
- //
- for (int i = 0; i < counterOut.Length; i++)
- {
- output[outOff + i] = (byte)(counterOut[i] ^ input[inOff + i]);
- }
+ //
+ // XOR the counterOut with the plaintext producing the cipher text
+ //
+ for (int i = 0; i < counterOut.Length; i++)
+ {
+ output[outOff + i] = (byte)(counterOut[i] ^ input[inOff + i]);
+ }
- // Increment the counter
- int j = counter.Length;
- while (--j >= 0 && ++counter[j] == 0)
- {
- }
+ // Increment the counter
+ int j = counter.Length;
+ while (--j >= 0 && ++counter[j] == 0)
+ {
+ }
- return counter.Length;
- }
+ return counter.Length;
+ }
- public void Reset()
- {
- Array.Copy(IV, 0, counter, 0, counter.Length);
- cipher.Reset();
- }
- }
+ public void Reset()
+ {
+ Array.Copy(IV, 0, counter, 0, counter.Length);
+ cipher.Reset();
+ }
+ }
}
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