/// <summary>
/// executes a selftest
/// </summary>
/// <remarks>
/// Call this method to make sure that the instance is able to produce
/// valid output according to the specification.
/// </remarks>
/// <returns>
/// true: selftest passed / false: selftest failed
/// </returns>
public static bool SelfTest()
{
uint unHi = TEST_VECTOR_PLAIN[0];
uint unLo = TEST_VECTOR_PLAIN[1];
Blowfish bf = new Blowfish(TEST_KEY);
bf.Encrypt(ref unHi, ref unLo);
if ((unHi != TEST_VECTOR_CIPHER[0]) ||
(unLo != TEST_VECTOR_CIPHER[1]))
{
return(false);
}
bf.Decrypt(ref unHi, ref unLo);
if ((unHi != TEST_VECTOR_PLAIN[0]) ||
(unLo != TEST_VECTOR_PLAIN[1]))
{
return(false);
}
return(true);
}
public int TransformBlock
(
byte[] bufIn,
int nOfsIn,
int nCount,
byte[] bufOut,
int nOfsOut
)
{
// NOTE: we assume that the caller understands the meaning of
// this method and that only even byte boundaries are
// given, thus we do not cache any data left internally
int nResult = 0;
if (null != m_bfc)
{
if (m_blIsEncryptor)
{
nResult = m_bfc.Encrypt(bufIn, bufOut, nOfsIn, nOfsOut, nCount);
}
else
{
nResult = m_bfc.Decrypt(bufIn, bufOut, nOfsIn, nOfsOut, nCount);
}
}
else if (null != m_bf)
{
if (m_blIsEncryptor)
{
nResult = m_bf.Encrypt(bufIn, bufOut, nOfsIn, nOfsOut, nCount);
}
else
{
nResult = m_bf.Decrypt(bufIn, bufOut, nOfsIn, nOfsOut, nCount);
}
}
else
{
nResult = 0;
}
return(nResult * Blowfish.BLOCKSIZE);
}
public int TransformBlock
(
byte[] bufIn,
int nOfsIn,
int nCount,
byte[] bufOut,
int nOfsOut
)
{
int nResult = 0;
if (null != m_bfc)
{
if (m_blIsEncryptor)
{
nResult = m_bfc.Encrypt(bufIn, bufOut, nOfsIn, nOfsOut, nCount);
}
else
{
nResult = m_bfc.Decrypt(bufIn, bufOut, nOfsIn, nOfsOut, nCount);
}
}
else if (null != m_bf)
{
if (m_blIsEncryptor)
{
nResult = m_bf.Encrypt(bufIn, bufOut, nOfsIn, nOfsOut, nCount);
}
else
{
nResult = m_bf.Decrypt(bufIn, bufOut, nOfsIn, nOfsOut, nCount);
}
}
else
{
nResult = 0;
}
return(nResult * Blowfish.BLOCKSIZE);
}
