public HashingStreamImpl(
Stream stream,
ContentHasher <T> hasher,
CryptoStreamMode mode,
bool useParallelHashing,
long parallelHashingFileSizeBoundary,
long streamLength)
{
Contract.Requires(stream != null);
Contract.Requires(hasher != null);
Contract.Requires(useParallelHashing || parallelHashingFileSizeBoundary == -1);
_baseStream = stream;
_hasher = hasher;
_streamMode = mode;
_useParallelHashing = useParallelHashing;
_parallelHashingFileSizeBoundary = parallelHashingFileSizeBoundary;
if (_useParallelHashing)
{
_hashingBufferBlock = new ActionBlock <Pool <Buffer> .PoolHandle>(
HashSegmentAsync,
new ExecutionDataflowBlockOptions()
{
MaxDegreeOfParallelism = 1
});
}
_hashAlgorithm = new GuardedHashAlgorithm(this, streamLength, hasher);
}
public HashingStreamImpl(Stream stream, ContentHasher <T> hasher, CryptoStreamMode mode, bool useParallelHashing, long parallelHashingFileSizeBoundary)
{
Contract.Requires(stream != null);
Contract.Requires(hasher != null);
Contract.Requires(useParallelHashing || parallelHashingFileSizeBoundary == -1);
_baseStream = stream;
_hasher = hasher;
_streamMode = mode;
_useParallelHashing = useParallelHashing;
_parallelHashingFileSizeBoundary = parallelHashingFileSizeBoundary;
if (_useParallelHashing)
{
_hashingBufferBlock = new ActionBlock <Pool <Buffer> .PoolHandle>(
HashSegmentAsync,
new ExecutionDataflowBlockOptions()
{
MaxDegreeOfParallelism = 1
});
}
_hasherHandle = hasher.CreateToken();
_hashAlgorithm = _hasherHandle.Hasher;
if (!_hashAlgorithm.CanTransformMultipleBlocks)
{
throw new NotImplementedException();
}
if (_hashAlgorithm.InputBlockSize != 1)
{
throw new NotImplementedException();
}
if (_hashAlgorithm.OutputBlockSize != 1)
{
throw new NotImplementedException();
}
}
public GuardedHashAlgorithm(HashingStreamImpl ownerStream, ContentHasher <T> hasher)
{
_ownerStream = ownerStream;
_hasherToken = hasher.CreateToken();
var hashAlgorithm = _hasherToken.Hasher;
if (!hashAlgorithm.CanTransformMultipleBlocks)
{
throw new NotImplementedException();
}
if (hashAlgorithm.InputBlockSize != 1)
{
throw new NotImplementedException();
}
if (hashAlgorithm.OutputBlockSize != 1)
{
throw new NotImplementedException();
}
}
public GuardedHashAlgorithm(HashingStreamImpl ownerStream, long streamLength, ContentHasher <T> hasher)
{
_ownerStream = ownerStream;
_hasherToken = hasher.CreateToken();
var hashAlgorithm = _hasherToken.Hasher;
if (streamLength >= 0 && hashAlgorithm is IHashAlgorithmInputLength sizeHint)
{
sizeHint.SetInputLength(streamLength);
}
if (!hashAlgorithm.CanTransformMultipleBlocks)
{
throw new NotImplementedException();
}
if (hashAlgorithm.InputBlockSize != 1)
{
throw new NotImplementedException();
}
if (hashAlgorithm.OutputBlockSize != 1)
{
throw new NotImplementedException();
}
}
