public ThreefishTransform(
byte[] key, byte[] iv, ThreefishTransformType type, CipherMode mode, PaddingMode padding
)
{
_cipherMode = mode;
_paddingMode = padding;
_cipherBytes = key.Length;
_cipherWords = key.Length / 8;
OutputBlockSize = key.Length * 8;
// Allocate working blocks now so that we don't
// have to allocate them each time
// Transform(Final)Block is called
_block = new ulong[_cipherWords];
_tempBlock = new ulong[_cipherWords];
_streamBytes = new byte[_cipherBytes];
// Allocate IV and set value
_iv = new ulong[_cipherWords];
GetBytes(iv, 0, _iv, _cipherBytes);
// Figure out which cipher we need based on
// the cipher bit size
switch (OutputBlockSize)
{
case 256:
_cipher = new Threefish256();
break;
case 512:
_cipher = new Threefish512();
break;
case 1024:
_cipher = new Threefish1024();
break;
default:
throw new CryptographicException("Unsupported key/block size.");
}
bool e = (type == ThreefishTransformType.Encrypt);
switch(_cipherMode)
{
case CipherMode.ECB:
_transformFunc = e ? new TransformFunc(EcbEncrypt) : new TransformFunc(EcbDecrypt);
break;
case CipherMode.CBC:
_transformFunc = e ? new TransformFunc(CbcEncrypt) : new TransformFunc(CbcDecrypt);
break;
case CipherMode.OFB:
_transformFunc = new TransformFunc(OfbApplyStream);
break;
case CipherMode.CFB:
_transformFunc = e ? new TransformFunc(CfbEncrypt) : new TransformFunc(CfbDecrypt);
break;
case CipherMode.CTS:
throw new CryptographicException("CTS mode not supported.");
}
// Set the key
var keyWords = new ulong[_cipherWords];
GetBytes(key, 0, keyWords, _cipherBytes);
_cipher.SetKey(keyWords);
InitializeBlocks();
}
public ThreefishTransform(
byte[] key, byte[] iv, ThreefishTransformType type, CipherMode mode, PaddingMode padding
)
{
_cipherMode = mode;
_paddingMode = padding;
_cipherBytes = key.Length;
_cipherWords = key.Length / 8;
OutputBlockSize = key.Length;// *8;
// Allocate working blocks now so that we don't
// have to allocate them each time
// Transform(Final)Block is called
_block = new ulong[_cipherWords];
_tempBlock = new ulong[_cipherWords];
_streamBytes = new byte[_cipherBytes];
// Allocate IV and set value
_iv = new ulong[_cipherWords];
GetBytes(iv, 0, _iv, _cipherBytes);
// Figure out which cipher we need based on
// the cipher bit size
switch (OutputBlockSize)
{
case 32:
_cipher = new Threefish256();
break;
case 64:
_cipher = new Threefish512();
break;
case 128:
_cipher = new Threefish1024();
break;
default:
throw new CryptographicException("Unsupported key/block size.");
}
bool e = (type == ThreefishTransformType.Encrypt);
switch (_cipherMode)
{
case CipherMode.ECB:
_transformFunc = e ? new TransformFunc(EcbEncrypt) : new TransformFunc(EcbDecrypt);
break;
case CipherMode.CBC:
_transformFunc = e ? new TransformFunc(CbcEncrypt) : new TransformFunc(CbcDecrypt);
break;
case CipherMode.OFB:
_transformFunc = new TransformFunc(OfbApplyStream);
break;
case CipherMode.CFB:
_transformFunc = e ? new TransformFunc(CfbEncrypt) : new TransformFunc(CfbDecrypt);
break;
case CipherMode.CTS:
throw new CryptographicException("CTS mode not supported.");
}
// Set the key
var keyWords = new ulong[_cipherWords];
GetBytes(key, 0, keyWords, _cipherBytes);
_cipher.SetKey(keyWords);
InitializeBlocks();
}
public ThreefishTransform(
byte[] key, byte[] iv, ThreefishTransformType type, CipherMode mode, PaddingMode padding
)
{
m_TransformType = type;
m_CipherMode = mode;
m_PaddingMode = padding;
m_CipherBytes = key.Length;
m_CipherWords = key.Length / 8;
m_CipherBits = key.Length * 8;
// Allocate working blocks now so that we don't
// have to allocate them each time
// Transform(Final)Block is called
m_Block = new ulong[m_CipherWords];
m_TempBlock = new ulong[m_CipherWords];
m_StreamBytes = new byte[m_CipherBytes];
// Allocate IV and set value
m_IV = new ulong[m_CipherWords];
GetBytes(iv, 0, m_IV, m_CipherBytes);
// Figure out which cipher we need based on
// the cipher bit size
switch (m_CipherBits)
{
case 256:
m_Cipher = new Threefish256();
break;
case 512:
m_Cipher = new Threefish512();
break;
case 1024:
m_Cipher = new Threefish1024();
break;
default:
throw new CryptographicException("Unsupported key/block size.");
}
bool e = (type == ThreefishTransformType.Encrypt);
switch(m_CipherMode)
{
case CipherMode.ECB:
m_TransformFunc = e ? new TransformFunc(ECB_Encrypt) : new TransformFunc(ECB_Decrypt);
break;
case CipherMode.CBC:
m_TransformFunc = e ? new TransformFunc(CBC_Encrypt) : new TransformFunc(CBC_Decrypt);
break;
case CipherMode.OFB:
m_TransformFunc = new TransformFunc(OFB_ApplyStream);
break;
case CipherMode.CFB:
m_TransformFunc = e ? new TransformFunc(CFB_Encrypt) : new TransformFunc(CFB_Decrypt);
break;
case CipherMode.CTS:
throw new CryptographicException("CTS mode not supported.");
}
// Set the key
ulong[] key_words = new ulong[m_CipherWords];
GetBytes(key, 0, key_words, m_CipherBytes);
m_Cipher.SetKey(key_words);
InitializeBlocks();
}
