internal static string ComputeHash(string value)
{
if (s_useEncryption)
{
EnsureConfig();
HashAlgorithm algorithm = (HashAlgorithm)s_oHashAlgoStack.Pop();
if (null == algorithm)
{
algorithm = NewHashAlgorithm();
}
byte[] encrypted;
byte[] bytes = new byte[ADP.CharSize * value.Length];
GCHandle handle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
try {
System.Text.Encoding.Unicode.GetBytes(value, 0, value.Length, bytes, 0);
encrypted = algorithm.ComputeHash(bytes);
}
finally {
Array.Clear(bytes, 0, bytes.Length);
if (handle.IsAllocated)
{
handle.Free();
}
}
s_oHashAlgoStack.Push(algorithm);
return(System.Text.Encoding.Unicode.GetString(encrypted, 0, encrypted.Length));
}
return(value);
}
private static ICryptoTransform GetCryptoTransform(bool fEncrypt)
{
InterlockedStack st = (fEncrypt ? s_oEncryptorStack : s_oDecryptorStack);
ICryptoTransform ct = (st.Pop() as ICryptoTransform);
if (null == ct)
{
ct = NewCryptTransform(fEncrypt);
}
return(ct);
}