protected override byte[] HashData(Stream data, HashAlgorithmName hashAlgorithm)
{
// we're sealed and the base should have checked this already
Contract.Assert(data != null);
Contract.Assert(!String.IsNullOrEmpty(hashAlgorithm.Name));
#if MONO
var hash = HashAlgorithm.Create(hashAlgorithm.Name);
return(hash.ComputeHash(data));
#else
using (SafeHashHandle hashHandle = Utils.CreateHash(Utils.StaticProvHandle, GetAlgorithmId(hashAlgorithm))) {
// Read the data 4KB at a time, providing similar read characteristics to a standard HashAlgorithm
byte[] buffer = new byte[4096];
int bytesRead = 0;
do
{
bytesRead = data.Read(buffer, 0, buffer.Length);
if (bytesRead > 0)
{
Utils.HashData(hashHandle, buffer, 0, bytesRead);
}
} while (bytesRead > 0);
return(Utils.EndHash(hashHandle));
}
#endif
}
protected override byte[] HashData(byte[] data, int offset, int count, HashAlgorithmName hashAlgorithm)
{
using (SafeHashHandle hash = Utils.CreateHash(Utils.StaticProvHandle, RSACryptoServiceProvider.GetAlgorithmId(hashAlgorithm)))
{
Utils.HashData(hash, data, offset, count);
return(Utils.EndHash(hash));
}
}
protected override byte[] HashData(byte[] data, int offset, int count, HashAlgorithmName hashAlgorithm)
{
// we're sealed and the base should have checked this already
Contract.Assert(data != null);
Contract.Assert(offset >= 0 && offset <= data.Length);
Contract.Assert(count >= 0 && count <= data.Length);
Contract.Assert(!String.IsNullOrEmpty(hashAlgorithm.Name));
using (SafeHashHandle hashHandle = Utils.CreateHash(Utils.StaticProvHandle, GetAlgorithmId(hashAlgorithm))) {
Utils.HashData(hashHandle, data, offset, count);
return(Utils.EndHash(hashHandle));
}
}
protected override byte[] HashData(Stream data, HashAlgorithmName hashAlgorithm)
{
using (SafeHashHandle hash = Utils.CreateHash(Utils.StaticProvHandle, RSACryptoServiceProvider.GetAlgorithmId(hashAlgorithm)))
{
byte[] numArray = new byte[4096];
int cbSize;
do
{
cbSize = data.Read(numArray, 0, numArray.Length);
if (cbSize > 0)
{
Utils.HashData(hash, numArray, 0, cbSize);
}
}while (cbSize > 0);
return(Utils.EndHash(hash));
}
}
protected override byte[] HashData(Stream data, HashAlgorithmName hashAlgorithm)
{
byte[] result;
using (SafeHashHandle safeHashHandle = Utils.CreateHash(Utils.StaticProvHandle, RSACryptoServiceProvider.GetAlgorithmId(hashAlgorithm)))
{
byte[] array = new byte[4096];
int num;
do
{
num = data.Read(array, 0, array.Length);
if (num > 0)
{
Utils.HashData(safeHashHandle, array, 0, num);
}
}while (num > 0);
result = Utils.EndHash(safeHashHandle);
}
return(result);
}
internal static byte[] EndHash(SafeHashHandle hHash)
{
byte[] o = (byte[])null;
Utils.EndHash(hHash, JitHelpers.GetObjectHandleOnStack <byte[]>(ref o));
return(o);
}
[System.Security.SecuritySafeCritical] // overrides protected transparent member
protected override byte[] HashFinal()
{
return(Utils.EndHash(_safeHashHandle));
}
internal static byte[] EndHash(SafeHashHandle hHash)
{
byte[] result = null;
Utils.EndHash(hHash, JitHelpers.GetObjectHandleOnStack <byte[]>(ref result));
return(result);
}
