//
// Summary:
// Implements the HashFinal method of the KeyedHashAlgorithm class by calling the InfoCard native client.
//
protected override byte[] HashFinal()
{
byte[] outData = null;
int cbOutData = 0;
IDT.DebugAssert(null != m_cachedBlock, "null cached block");
HGlobalSafeHandle pInData = null;
GlobalAllocSafeHandle pOutData = null;
try
{
if (null != m_cachedBlock)
{
if (0 != m_cachedBlock.Length)
{
pInData = HGlobalSafeHandle.Construct(m_cachedBlock.Length);
Marshal.Copy(m_cachedBlock, 0, pInData.DangerousGetHandle(), m_cachedBlock.Length);
}
int status = CardSpaceSelector.GetShim().m_csShimHashFinal(m_cryptoHandle.InternalHandle,
m_cachedBlock.Length,
null != pInData ? pInData : HGlobalSafeHandle.Construct(),
out cbOutData,
out pOutData);
if (0 != status)
{
ExceptionHelper.ThrowIfCardSpaceException(status);
throw IDT.ThrowHelperError(new Win32Exception(status));
}
pOutData.Length = cbOutData;
outData = DiagnosticUtility.Utility.AllocateByteArray(pOutData.Length);
using (pOutData)
{
Marshal.Copy(pOutData.DangerousGetHandle(), outData, 0, pOutData.Length);
}
}
}
finally
{
if (null != pInData)
{
pInData.Dispose();
}
Array.Clear(m_cachedBlock, 0, m_cachedBlock.Length);
m_cachedBlock = null;
}
return(outData);
}
//
// Summary:
// Implements the HashCore method of the KeyedHashAlgorithm class by calling the InfoCard native client.
//
// Parameters:
// array - the bytes to hash.
// ibStart - the index in the array from which to begin hashing.
// cbSize - the number of bytes after the starting index to hash.
//
protected override void HashCore(byte[] array, int ibStart, int cbSize)
{
//
// will cache one block and call TransformBlock on the previous block.
//
if (null != m_cachedBlock)
{
HGlobalSafeHandle pInData = null;
try
{
if (0 != m_cachedBlock.Length)
{
pInData = HGlobalSafeHandle.Construct(m_cachedBlock.Length);
Marshal.Copy(m_cachedBlock, 0, pInData.DangerousGetHandle(), m_cachedBlock.Length);
}
int status = CardSpaceSelector.GetShim().m_csShimHashCore(m_cryptoHandle.InternalHandle,
m_cachedBlock.Length,
null != pInData ? pInData : HGlobalSafeHandle.Construct());
if (0 != status)
{
ExceptionHelper.ThrowIfCardSpaceException(status);
throw IDT.ThrowHelperError(new Win32Exception(status));
}
}
finally
{
if (null != pInData)
{
pInData.Dispose();
}
}
}
//
// Cache the current block.
//
if (null != m_cachedBlock)
{
Array.Clear(m_cachedBlock, 0, m_cachedBlock.Length);
}
m_cachedBlock = DiagnosticUtility.Utility.AllocateByteArray(cbSize);
Array.Copy(array, ibStart, m_cachedBlock, 0, cbSize);
return;
}
protected override byte[] HashFinal()
{
byte[] destination = null;
int cbOutData = 0;
HGlobalSafeHandle handle = null;
GlobalAllocSafeHandle pOutData = null;
try
{
if (this.m_cachedBlock == null)
{
return(destination);
}
if (this.m_cachedBlock.Length != 0)
{
handle = HGlobalSafeHandle.Construct(this.m_cachedBlock.Length);
Marshal.Copy(this.m_cachedBlock, 0, handle.DangerousGetHandle(), this.m_cachedBlock.Length);
}
int status = CardSpaceSelector.GetShim().m_csShimHashFinal(this.m_cryptoHandle.InternalHandle, this.m_cachedBlock.Length, (handle != null) ? handle : HGlobalSafeHandle.Construct(), out cbOutData, out pOutData);
if (status != 0)
{
ExceptionHelper.ThrowIfCardSpaceException(status);
throw InfoCardTrace.ThrowHelperError(new Win32Exception(status));
}
pOutData.Length = cbOutData;
destination = DiagnosticUtility.Utility.AllocateByteArray(pOutData.Length);
using (pOutData)
{
Marshal.Copy(pOutData.DangerousGetHandle(), destination, 0, pOutData.Length);
}
}
finally
{
if (handle != null)
{
handle.Dispose();
}
Array.Clear(this.m_cachedBlock, 0, this.m_cachedBlock.Length);
this.m_cachedBlock = null;
}
return(destination);
}
private void Dispose(bool disposing)
{
if (disposing)
{
GC.SuppressFinalize(this);
}
if (null != m_chain)
{
foreach (InternalPolicyElement element in m_chain)
{
if (null != element)
{
element.Dispose();
}
}
m_chain = null;
}
if (null != m_nativeChain)
{
m_nativeChain.Dispose();
}
}