public byte[] Decrypt( byte[] cipherTextBytes )
{
DataBlob plainTextBlob = new DataBlob ( );
DataBlob cipherTextBlob = new DataBlob ( cipherTextBytes );
DataBlob entropyBlob = new DataBlob ( entropy );
description = "";
try {
CryptProtectFlags flags = CryptProtectFlags.UIForbidden;
if ( !CryptUnprotectData ( ref cipherTextBlob, ref description, ref entropyBlob, IntPtr.Zero, IntPtr.Zero, flags, ref plainTextBlob ) )
throw new COMException ( "CryptUnprotectData failed. ", Marshal.GetLastWin32Error ( ) );
byte[] plainTextBytes = new byte[ plainTextBlob.cbData ];
Marshal.Copy ( plainTextBlob.pbData, plainTextBytes, 0, plainTextBlob.cbData );
return plainTextBytes;
} catch ( Exception ex ) {
throw new Exception ( "DPAPI was unable to decrypt data. " + ex.Message );
} finally {
if ( plainTextBlob.pbData != IntPtr.Zero )
Marshal.FreeHGlobal ( plainTextBlob.pbData );
if ( cipherTextBlob.pbData != IntPtr.Zero )
Marshal.FreeHGlobal ( cipherTextBlob.pbData );
if ( entropyBlob.pbData != IntPtr.Zero )
Marshal.FreeHGlobal ( entropyBlob.pbData );
}
}
public static extern bool CryptUnprotectData(
ref DataBlob dataInPointer,
String dataDescr,
ref DataBlob optionalEntropyPointer,
IntPtr reservedVoidPointer,
ref CryptProtectPromptStruct promptStructPointer,
int flags,
ref DataBlob dataOutPointer);
public static Bitmap channelsToBitmap(DataBlob data) {
if (data == null || data.channels == null) {
return null;
}
Bitmap bmp = new Bitmap(data.imageWidth, data.imageHeight, PixelFormat.Format24bppRgb);
BitmapData bmpData = bmp.LockBits(
new Rectangle(0, 0, bmp.Width, bmp.Height),
ImageLockMode.ReadWrite,
bmp.PixelFormat);
IntPtr ptr = bmpData.Scan0;
//copy bytes
int nBytes = Math.Abs(bmpData.Stride) * bmp.Height;
byte[] rgbValues = new byte[nBytes];
System.Runtime.InteropServices.Marshal.Copy(ptr, rgbValues, 0, nBytes);
int pixel;
int iY, iCrb;
int channelYStride = data.channelWidth;
//TODO: don't assume padded. :P
int channelCRBStride = Subsample.getCbCrStride(data);
for (int y = 0; y < data.imageHeight; y++) {
pixel = y * bmpData.Stride;
iY = y * channelYStride;
iCrb = (data.samplingMode == DataBlob.Samples.s420 ? y / 2 : y) * channelCRBStride;
for (int x = 0; x < data.imageWidth; x++) {
rgbValues[pixel + 2] = data.channels[0][iY];
rgbValues[pixel + 1] = data.channels[1][iCrb];
rgbValues[pixel] = data.channels[2][iCrb];
pixel += 3;
iY++;
if (data.samplingMode == DataBlob.Samples.s420 || data.samplingMode == DataBlob.Samples.s422) {
if (x % 2 == 1) {
iCrb++;
}
} else if (data.samplingMode == DataBlob.Samples.s444) {
iCrb++;
} else if (data.samplingMode == DataBlob.Samples.s411) {
if (x % 4 == 3) {
iCrb++;
}
}
}
}
System.Runtime.InteropServices.Marshal.Copy(rgbValues, 0, ptr, nBytes);
bmp.UnlockBits(bmpData);
return bmp;
}
protected virtual void init() {
properties = new Dictionary<string, Property>();
state = new DataBlob();
PropertyString p = new PropertyString("default", "Name of the control");
p.eValueChanged += (s, e) => fireOutputChanged(e);
properties.Add("name", p);
createProperties();
id = generateID();
}
protected override void clean() {
base.clean();
state = null;
vState = null;
Address upstreamNow = properties["inChannelsNow"].input;
if (upstreamNow == null) {
return;
}
Address upstreamPast = properties["inChannelsPast"].input;
if (upstreamPast == null) {
return;
}
DataBlob stateNow = upstreamNow.node.getData(upstreamNow.port);
if (stateNow == null) {
return;
}
DataBlob statePast = upstreamPast.node.getData(upstreamPast.port);
if (statePast == null) {
return;
}
if (stateNow.type != DataBlob.Type.Channels || stateNow.channels == null) {
return;
}
if (statePast.type != DataBlob.Type.Channels || statePast.channels == null) {
return;
}
//check resolutions match
if (stateNow.channels[0].Length != statePast.channels[0].Length
|| stateNow.channels[1].Length != statePast.channels[1].Length
|| stateNow.channels[2].Length != statePast.channels[2].Length) {
return;
}
state = stateNow.clone();
vState = stateNow.clone();
//create copy of channels for local use.
byte[][] diffChannels = new byte[state.channels.Length][];
diffChannels[0] = new byte[state.channels[0].Length];
diffChannels[1] = new byte[state.channels[1].Length];
diffChannels[2] = new byte[state.channels[2].Length];
byte[][] vectors = new byte[3][];
state.channels = diffChannels;
vState.channels = vectors;
state.bmp = null;
vState.bmp = null;
state.type = DataBlob.Type.Channels;
vState.type = DataBlob.Type.Vectors;
calcMoVec(statePast.channels, stateNow.channels);
}
private static extern bool CryptProtectData
(
ref DataBlob pDataIn,
String szDataDescr,
ref DataBlob pOptionalEntropy,
IntPtr pvReserved,
ref CryptprotectPromptstruct
pPromptStruct,
int dwFlags,
ref DataBlob pDataOut);
protected static void writeChannels(BinaryWriter writer, DataBlob ch)
{
Chunker c = new Chunker(8, ch.channelWidth, ch.channelHeight, ch.channelWidth, 1);
writeChannel(writer, ch.channels[0], c);
Size s = Subsample.deduceCbCrSize(ch);
c = new Chunker(8, s.Width, s.Height, s.Width, 1);
writeChannel(writer, ch.channels[1], c);
writeChannel(writer, ch.channels[2], c);
}
private void readChannels(BinaryReader reader, DataBlob ch)
{
Chunker c = new Chunker(8, ch.channelWidth, ch.channelHeight, ch.channelWidth, 1);
readChannel(reader, ch.channels[0], c);
Size s = Subsample.deduceCbCrSize(ch);
c = new Chunker(8, s.Width, s.Height, s.Width, 1);
readChannel(reader, ch.channels[1], c);
readChannel(reader, ch.channels[2], c);
}
protected virtual void init()
{
properties = new Dictionary <string, Property>();
state = new DataBlob();
PropertyString p = new PropertyString("default", "Name of the control");
p.eValueChanged += (s, e) => fireOutputChanged(e);
properties.Add("name", p);
createProperties();
id = generateID();
}
private DataBlob readHeader(BinaryReader reader)
{
DataBlob metadata = new DataBlob();
metadata.imageWidth = reader.ReadUInt16();
metadata.imageHeight = reader.ReadUInt16();
metadata.channelWidth = reader.ReadUInt16();
metadata.channelHeight = reader.ReadUInt16();
metadata.quantizeQuality = reader.ReadByte();
metadata.samplingMode = (DataBlob.Samples)reader.ReadByte();
return(metadata);
}
public static Size deduceCbCrSize(DataBlob data) {
Size size = getCbCrSize(new Size(data.channelWidth, data.channelHeight), data.samplingMode);
if (data.channels[1].Length == size.Width * size.Height) {
return size;
}
size = getPaddedCbCrSize(new Size(data.channelWidth, data.channelHeight), data.samplingMode);
if (data.channels[1].Length == size.Width * size.Height) {
return size;
}
size.Width = 0;
size.Height = 0;
return size;
}
protected override void clean()
{
base.clean();
Address upstreamA = properties["inColorA"].input;
if (upstreamA == null)
{
return;
}
Address upstreamB = properties["inColorB"].input;
if (upstreamB == null)
{
return;
}
state = upstreamA.node.getData(upstreamA.port);
if (state == null)
{
return;
}
DataBlob stateB = upstreamB.node.getData(upstreamB.port);
if (stateB == null)
{
return;
}
state = state.clone();
if (state.type != DataBlob.Type.Image || state.bmp == null)
{
state = null;
return;
}
if (stateB.type != DataBlob.Type.Image || stateB.bmp == null)
{
stateB = null;
return;
}
//check resolutions match
if (state.imageWidth != stateB.imageWidth || state.imageHeight != stateB.imageHeight)
{
return;
}
state.bmp = state.bmp.Clone(new Rectangle(0, 0, state.bmp.Width, state.bmp.Height), state.bmp.PixelFormat);
merge(stateB.bmp);
}
protected override void clean() {
base.clean();
state = null;
Address upstreamDiff = properties["inChannels"].input;
if (upstreamDiff == null) {
return;
}
Address upstreamPast = properties["inChannelsPast"].input;
if (upstreamPast == null) {
return;
}
Address upstreamVectors = properties["inVectors"].input;
if (upstreamVectors == null) {
return;
}
DataBlob stateDiff = upstreamDiff.node.getData(upstreamDiff.port);
if (stateDiff == null) {
return;
}
DataBlob statePast = upstreamPast.node.getData(upstreamPast.port);
if (statePast == null) {
return;
}
stateVectors = upstreamVectors.node.getData(upstreamVectors.port);
if (stateVectors == null) {
return;
}
if (stateDiff.type != DataBlob.Type.Channels || stateDiff.channels == null)
return;
if (statePast.type != DataBlob.Type.Channels || statePast.channels == null)
return;
if (stateVectors.type != DataBlob.Type.Vectors || stateVectors.channels == null)
return;
state = stateDiff.clone();
byte[][] newChannels = new byte[state.channels.Length][];
newChannels[0] = new byte[state.channels[0].Length];
newChannels[1] = new byte[state.channels[1].Length];
newChannels[2] = new byte[state.channels[2].Length];
state.channels = newChannels;
state.bmp = null;
reassemble(statePast.channels, stateDiff.channels, stateVectors.channels);
}
/// <summary>
/// Encrypts the specified data.
/// </summary>
/// <param name="plainTextBytes">A byte array containing data to protect.</param>
/// <returns>A byte array representing the encrypted data.</returns>
public byte[] Encrypt(byte[] plainTextBytes)
{
var description = string.Empty;
var plainTextBlob = new DataBlob(plainTextBytes);
var cipherTextBlob = new DataBlob(null);
var entropyBlob = new DataBlob(Key.Bytes);
try
{
var flags = CryptProtect.UiForbidden;
if (KeyType == DataProtectionKeyType.MachineKey)
{
flags |= CryptProtect.LocalMachine;
}
CryptProtectData(
ref plainTextBlob,
description,
ref entropyBlob,
IntPtr.Zero,
IntPtr.Zero,
flags,
ref cipherTextBlob);
var cipherTextBytes = new byte[cipherTextBlob.DataLength];
Marshal.Copy(cipherTextBlob.DataBuffer, cipherTextBytes, 0, cipherTextBlob.DataLength);
return(cipherTextBytes);
}
finally
{
if (plainTextBlob.DataBuffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(plainTextBlob.DataBuffer);
}
if (cipherTextBlob.DataBuffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(cipherTextBlob.DataBuffer);
}
if (entropyBlob.DataBuffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(entropyBlob.DataBuffer);
}
}
}
private static void InitBlob(byte[] data, ref DataBlob blob)
{
if (data == null)
{
data = new byte[0];
}
blob.pbData = Marshal.AllocHGlobal(data.Length);
if (blob.pbData == IntPtr.Zero)
{
throw new Exception("Unable to allocate data buffer for BLOB structure.");
}
blob.cbData = data.Length;
Marshal.Copy(data, 0, blob.pbData, data.Length);
}
protected override void clean() {
base.clean();
//load image from path, if it exists
state = new DataBlob();
try {
state.bmp = new Bitmap(filepath);
state.bmp = state.bmp.Clone(new Rectangle(0, 0, state.bmp.Width, state.bmp.Height), System.Drawing.Imaging.PixelFormat.Format24bppRgb);
state.imageWidth = state.bmp.Width;
state.imageHeight = state.bmp.Height;
} catch (Exception) {
state = null;
}
}
public static async Task <DataReference> TransferBinaryData(IDataApiClient dataApiClient, Stream data, string id = null)
{
if (id == null)
{
id = IdGenerator.FromGuid(); // We cannot be sure that the stream is reversible and hence cannot use it for calculating an ID
}
var dataType = nameof(DataBlob);
var dataBlob = new DataBlob(id, new byte[0]);
id = await dataApiClient.CreateSubmission(dataBlob, x => x.Data, id);
await dataApiClient.TransferSubmissionData(dataType, id, data);
return(new DataReference(dataType, id));
}
protected override void clean()
{
base.clean();
//load image from path, if it exists
state = new DataBlob();
try {
state.bmp = new Bitmap(filepath);
state.bmp = state.bmp.Clone(new Rectangle(0, 0, state.bmp.Width, state.bmp.Height), System.Drawing.Imaging.PixelFormat.Format24bppRgb);
state.imageWidth = state.bmp.Width;
state.imageHeight = state.bmp.Height;
} catch (Exception) {
state = null;
}
}
public byte[] Encrypt(byte[] plainTextBytes)
{
if (description == null)
{
description = "";
}
DataBlob plainTextBlob = new DataBlob(plainTextBytes);
DataBlob cipherTextBlob = new DataBlob( );
DataBlob entropyBlob = new DataBlob(entropy);
try {
CryptProtectFlags flags = CryptProtectFlags.UIForbidden;
if (keyType == DataProtectionKeyType.MachineKey)
{
flags |= CryptProtectFlags.LocalMachine;
}
if (!CryptProtectData(ref plainTextBlob, description, ref entropyBlob, IntPtr.Zero, IntPtr.Zero, flags, ref cipherTextBlob))
{
throw new COMException("CryptProtectData failed." + Marshal.GetLastWin32Error( ));
}
byte[] cipherTextBytes = new byte[cipherTextBlob.cbData];
Marshal.Copy(cipherTextBlob.pbData, cipherTextBytes, 0, cipherTextBlob.cbData);
return(cipherTextBytes);
} catch (Exception ex) {
throw new Exception("DPAPI was unable to encrypt data. " + ex.Message);
} finally {
if (plainTextBlob.pbData != IntPtr.Zero)
{
Marshal.FreeHGlobal(plainTextBlob.pbData);
}
if (cipherTextBlob.pbData != IntPtr.Zero)
{
Marshal.FreeHGlobal(cipherTextBlob.pbData);
}
if (entropyBlob.pbData != IntPtr.Zero)
{
Marshal.FreeHGlobal(entropyBlob.pbData);
}
}
}
public static int getCbCrStride(DataBlob data)
{
Size unpadded = getCbCrSize(new Size(data.channelWidth, data.channelHeight), data.samplingMode);
if (data.channels[1].Length == unpadded.Width * unpadded.Height)
{
return(unpadded.Width);
}
Size padded = getPaddedCbCrSize(new Size(data.channelWidth, data.channelHeight), data.samplingMode);
if (data.channels[1].Length == padded.Width * padded.Height)
{
return(padded.Width);
}
return(-1);
}
private bool validateInput()
{
Address upC1 = properties["inChannels"].input;
if (upC1 == null)
{
return(false);
}
Address upC2 = properties["inChannels2"].input;
if (upC2 == null)
{
return(false);
}
Address upV2 = properties["inVectors2"].input;
if (upV2 == null)
{
return(false);
}
inC1 = upC1.node.getData(upC1.port);
inC2 = upC2.node.getData(upC2.port);
inV2 = upV2.node.getData(upV2.port);
if (inC1 == null || inC1.type != DataBlob.Type.Channels || inC1.channels == null)
{
return(false);
}
if (inC2 == null || inC2.type != DataBlob.Type.Channels || inC2.channels == null)
{
return(false);
}
if (inV2 == null || inV2.type != DataBlob.Type.Vectors || inV2.channels == null)
{
return(false);
}
if (inC1.channels[0].Length != inC2.channels[0].Length ||
inC1.channels[1].Length != inC2.channels[1].Length ||
inC1.channels[2].Length != inC2.channels[2].Length)
{
return(false);
}
return(true);
}
private void setupBlobs(DataBlob metadata)
{
C1 = new DataBlob();
C2 = new DataBlob();
V2 = new DataBlob();
C1.type = C2.type = DataBlob.Type.Channels;
V2.type = DataBlob.Type.Vectors;
//import metadata onto channels
C1.imageWidth = C2.imageWidth = metadata.imageWidth;
C1.imageHeight = C2.imageHeight = metadata.imageHeight;
C1.channelWidth = C2.channelWidth = metadata.channelWidth;
C1.channelHeight = C2.channelHeight = metadata.channelHeight;
C1.quantizeQuality = C2.quantizeQuality = metadata.quantizeQuality;
C1.samplingMode = C2.samplingMode = metadata.samplingMode;
Chunker c = new Chunker(8, metadata.channelWidth, metadata.channelHeight, metadata.channelWidth, 1);
V2.imageWidth = metadata.imageWidth;
V2.imageHeight = metadata.imageHeight;
V2.channelWidth = c.getChunksWide();
V2.channelHeight = c.getChunksHigh();
V2.quantizeQuality = metadata.quantizeQuality;
V2.samplingMode = metadata.samplingMode;
//Allocate space for incoming data
C1.channels = new byte[3][];
C2.channels = new byte[3][];
V2.channels = new byte[3][];
int cMajor = C1.channelWidth * C1.channelHeight;
Size sizeMinor = Subsample.getPaddedCbCrSize(new Size(C1.channelWidth, C1.channelHeight), C1.samplingMode);
int cMinor = sizeMinor.Width * sizeMinor.Height;
C1.channels[0] = new byte[cMajor];
C2.channels[0] = new byte[cMajor];
C1.channels[1] = new byte[cMinor];
C2.channels[1] = new byte[cMinor];
C1.channels[2] = new byte[cMinor];
C2.channels[2] = new byte[cMinor];
cMajor = V2.channelWidth * V2.channelHeight;
sizeMinor = Subsample.getCbCrSize(new Size(V2.channelWidth, V2.channelHeight), V2.samplingMode);
cMinor = sizeMinor.Width * sizeMinor.Height;
V2.channels[0] = new byte[cMajor];
V2.channels[1] = new byte[cMinor];
V2.channels[2] = new byte[cMinor];
}
public static Size getCbCrSize(Size ySize, DataBlob.Samples mode) {
switch (mode) {
case DataBlob.Samples.s444:
break;
case DataBlob.Samples.s422:
ySize.Width = (ySize.Width + 1) / 2;
break;
case DataBlob.Samples.s420:
ySize.Width = (ySize.Width + 1) / 2;
ySize.Height = (ySize.Height + 1) / 2;
break;
case DataBlob.Samples.s411:
ySize.Width = (ySize.Width + 3) / 4;
break;
}
return ySize;
}
public static Size deduceCbCrSize(DataBlob data)
{
Size size = getCbCrSize(new Size(data.channelWidth, data.channelHeight), data.samplingMode);
if (data.channels[1].Length == size.Width * size.Height)
{
return(size);
}
size = getPaddedCbCrSize(new Size(data.channelWidth, data.channelHeight), data.samplingMode);
if (data.channels[1].Length == size.Width * size.Height)
{
return(size);
}
size.Width = 0;
size.Height = 0;
return(size);
}
//------------------------------- helpers --------------------------
void HandleBlobData(DataBlob packet)
{
//int sizeOfBlobs = accumulator.GetSizeOfAllBlobs();
if (accumulator.Add(packet as DataBlob) == true)
{
//int sizeOfBlobs = accumulator.GetSizeOfAllBlobs();
int numBlobs = accumulator.BlobCount;
byte[] bytes = accumulator.ConvertDatablobsIntoRawData();
int len = bytes.Length;
OnImageReceived?.Invoke(bytes, bytes.Length);
accumulator.Clear();
Console.Write("Blobs received in acc {0}\n", numBlobs);
Console.Write("Bytes received in blob {0}\n", len);
}
return;
}
public bool Add(DataBlob blob)
{
Debug.Assert(accumulator.Count < blob.totalRawDataPacketCount);
if (accumulator.Count > 1)
{
//Debug.Assert(blob.packetIndex != accumulator[accumulator.Count - 1].packetIndex);
if (blob.packetIndex == accumulator[accumulator.Count - 1].packetIndex)
{
return(false);
}
}
accumulator.Add(blob);
if (accumulator.Count == blob.totalRawDataPacketCount)
{
return(true);
}
return(false);
}
/// <summary>
/// Decrypts the specified data.
/// </summary>
/// <param name="cipherTextBytes">A byte array containing the encrypted data.</param>
/// <returns>A byte array containing the decrypted data.</returns>
public byte[] Decrypt(byte[] cipherTextBytes)
{
var plainTextBlob = default(DataBlob);
var cipherTextBlob = new DataBlob(cipherTextBytes);
var entropyBlob = new DataBlob(Key.Bytes);
var description = string.Empty;
try
{
CryptUnprotectData(
ref cipherTextBlob,
ref description,
ref entropyBlob,
IntPtr.Zero,
IntPtr.Zero,
CryptProtect.UiForbidden,
ref plainTextBlob);
var plainTextBytes = new byte[plainTextBlob.DataLength];
Marshal.Copy(plainTextBlob.DataBuffer, plainTextBytes, 0, plainTextBlob.DataLength);
return(plainTextBytes);
}
finally
{
if (plainTextBlob.DataBuffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(plainTextBlob.DataBuffer);
}
if (cipherTextBlob.DataBuffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(cipherTextBlob.DataBuffer);
}
if (entropyBlob.DataBuffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(entropyBlob.DataBuffer);
}
}
}
public static async Task <DataReference> TransferBinaryData(IDataApiClient dataApiClient, byte[] data, string id = null)
{
if (id == null)
{
id = IdGenerator.Sha1HashFromByteArray(data);
}
var dataType = nameof(DataBlob);
if (await dataApiClient.ExistsAsync <DataBlob>(id))
{
return(new DataReference(dataType, id));
}
var dataBlob = new DataBlob(id, new byte[0]);
id = await dataApiClient.CreateSubmission(dataBlob, x => x.Data, id);
await dataApiClient.TransferSubmissionData(dataType, id, data);
return(new DataReference(dataType, id));
}
//------------------------------- helpers --------------------------
void HandleBlobData(DataBlob packet)
{
//int sizeOfBlobs = accumulator.GetSizeOfAllBlobs();
if (accumulator.Add(packet as DataBlob) == true)
{
//int sizeOfBlobs = accumulator.GetSizeOfAllBlobs();
int numBlobs = accumulator.BlobCount;
byte[] bytes = accumulator.ConvertDatablobsIntoRawData();
int len = bytes.Length;
OnImageReceived?.Invoke(bytes, bytes.Length);
accumulator.Clear();
Console.Write("Blobs received in acc {0}\n", numBlobs);
Console.Write("Bytes received in blob {0}\n", len);
var Timestamp = new DateTimeOffset(DateTime.UtcNow).ToUnixTimeMilliseconds();
Console.WriteLine("request roundtrip total time {0} ms", Timestamp - startTimeMilliseconds);
}
return;
}
public static async Task <DataReference> TransferFile(IDataApiClient dataApiClient, string filePath, string id = null)
{
if (id == null)
{
id = IdGenerator.Sha1HashFromFile(filePath);
}
var dataType = nameof(DataBlob);
if (await dataApiClient.ExistsAsync <DataBlob>(id))
{
return(new DataReference(dataType, id));
}
var dataBlob = new DataBlob(id, new byte[0], Path.GetFileName(filePath));
id = await dataApiClient.CreateSubmission(dataBlob, x => x.Data, id);
using (var fileStream = File.OpenRead(filePath))
await dataApiClient.TransferSubmissionData(dataType, id, fileStream);
return(new DataReference(dataType, id));
}
private async Task <GenericDataContainer> FixMissingMetadata(string dataType, string id, byte[] binaryData)
{
// Assumption: Metadata doesn't exist
var blob = binaryDataStorage.GetBlob(dataType, id);
DateTime createdTimeUtc;
DateTime submissionTimeUtc;
if (await blob.ExistsAsync())
{
createdTimeUtc = blob.CreatedTimestampUtc;
submissionTimeUtc = blob.LastModifiedTimestampUtc;
}
else
{
var utcNow = DateTime.UtcNow;
createdTimeUtc = utcNow;
submissionTimeUtc = utcNow;
}
IId obj;
switch (dataType)
{
case nameof(DataBlob):
obj = new DataBlob(id, new byte[0]);
break;
case nameof(Image):
var imageFormat = ImageFormatDetector.Detect(binaryData);
var imageExtension = imageFormat != ImageFormatDetector.ImageFormat.Unknown ? imageFormat.GetFileExtension() : ".bin";
obj = new Image(id, new byte[0], imageExtension);
break;
default:
throw new NotSupportedException($"Cannot fix missing metadata for ID '{id}' of data type '{dataType}'");
}
var container = new GenericDataContainer("unknown", createdTimeUtc, "unknown", submissionTimeUtc, ApiVersion.Current, obj);
await metadataStorage.StoreAsync(dataType, container, false);
return(container);
}
public byte[] Decrypt(byte[] cipherTextBytes)
{
DataBlob plainTextBlob = new DataBlob( );
DataBlob cipherTextBlob = new DataBlob(cipherTextBytes);
DataBlob entropyBlob = new DataBlob(entropy);
description = "";
try {
CryptProtectFlags flags = CryptProtectFlags.UIForbidden;
if (!CryptUnprotectData(ref cipherTextBlob, ref description, ref entropyBlob, IntPtr.Zero, IntPtr.Zero, flags, ref plainTextBlob))
{
throw new COMException("CryptUnprotectData failed. ", Marshal.GetLastWin32Error( ));
}
byte[] plainTextBytes = new byte[plainTextBlob.cbData];
Marshal.Copy(plainTextBlob.pbData, plainTextBytes, 0, plainTextBlob.cbData);
return(plainTextBytes);
} catch (Exception ex) {
throw new Exception("DPAPI was unable to decrypt data. " + ex.Message);
} finally {
if (plainTextBlob.pbData != IntPtr.Zero)
{
Marshal.FreeHGlobal(plainTextBlob.pbData);
}
if (cipherTextBlob.pbData != IntPtr.Zero)
{
Marshal.FreeHGlobal(cipherTextBlob.pbData);
}
if (entropyBlob.pbData != IntPtr.Zero)
{
Marshal.FreeHGlobal(entropyBlob.pbData);
}
}
}
public async Task CanUploadLargeDataBlobs()
{
var data = new byte[35 * 1024 * 1024];
for (int i = 0; i < data.Length; i++)
{
data[i] = 0x42;
}
var dataBlob = new DataBlob(IdGenerator.FromGuid(), data);
if (await analystDataApiClient.ExistsAsync <DataBlob>(dataBlob.Id))
{
await adminDataApiClient.DeleteAsync <DataBlob>(dataBlob.Id);
}
string actualId = null;
AssertStatusCode(
() => actualId = analystDataApiClient.ReplaceAsync(dataBlob, dataBlob.Id).Result,
HttpStatusCode.OK);
analystDataApiClient.DeleteAsync <DataBlob>(actualId).Wait();
}
private void DeserializeDataBlob()
{
Stream stream = null;
try
{
if (Directory.Exists(GetFilepath()) && File.Exists(GetFilepath() + DataCacheFilename))
{
stream = File.Open(GetFilepath() + DataCacheFilename, FileMode.Open);
BinaryFormatter bformatter = new BinaryFormatter();
bformatter.Binder = new VersionDeserializationBinder();
_dataBlob = bformatter.Deserialize(stream) as DataBlob;
stream.Close();
}
else
{
_dataBlob = new DataBlob();
}
}
catch (Exception e)
{
Debug.LogError("DataCache: Error deserializing data blob: " + e.Message);
if (File.Exists(GetFilepath() + DataCacheFilename))
{
File.Delete(GetFilepath() + DataCacheFilename);
}
_dataBlob = new DataBlob();
}
finally
{
if (null != stream)
{
stream.Close();
}
}
}
private void open(object sender, EventArgs e)
{
soil();
clean();
Stream stream = null;
try {
stream = new FileStream(inPath, FileMode.Open, FileAccess.Read, FileShare.Read);
using (BinaryReader reader = new BinaryReader(stream, Encoding.Default)) {
DataBlob metadata = readHeader(reader);
setupBlobs(metadata);
readChannels(reader, C1);
readChannels(reader, V2);
readChannels(reader, C2);
}
} catch (FileNotFoundException) {
//silently fail.
} finally {
if (stream != null)
{
stream.Dispose();
}
}
}
/// <summary>
/// Initializes a BLOB structure from a byte array.
/// </summary>
/// <param name="data">
/// Original data in a byte array format.
/// </param>
/// <param name="blob">
/// Returned blob structure.
/// </param>
private static void InitBlob(byte[] data, ref DataBlob blob)
{
// Use empty array for null parameter.
if (data == null)
{
data = new byte[0];
}
// Allocate memory for the BLOB data.
blob.pbData = Marshal.AllocHGlobal(data.Length);
// Make sure that memory allocation was successful.
if (blob.pbData == IntPtr.Zero)
{
throw new Exception(
"Unable to allocate data buffer for BLOB structure.");
}
// Specify number of bytes in the BLOB.
blob.cbData = data.Length;
// Copy data from original source to the BLOB structure.
Marshal.Copy(data, 0, blob.pbData, data.Length);
}
public void setOutSamples(DataBlob.Samples samples) {
outSamples = samples;
properties["outSamples"].nValue = (int)samples;
setExtra(options[(int)samples] + " to " + options[(int)outSamples]);
soil();
}
private static extern bool CryptUnprotectData(
ref DataBlob pDataIn,
String szDataDescr,
ref DataBlob pOptionalEntropy,
IntPtr pvReserved,
ref CryptprotectPromptstruct
pPromptStruct,
int dwFlags,
ref DataBlob pDataOut);
public byte[] Decrypt(
byte[] cipherText,
byte[] optionalEntropy,
string dataDescription)
{
var plainTextBlob = new DataBlob();
var cipherBlob = new DataBlob();
var prompt = new
CryptprotectPromptstruct();
InitPromptstruct(ref prompt);
try
{
try
{
int cipherTextSize = cipherText.Length;
cipherBlob.pbData = Marshal.AllocHGlobal(cipherTextSize);
if (IntPtr.Zero == cipherBlob.pbData)
{
throw new Exception("Unable to allocate cipherText buffer.");
}
cipherBlob.cbData = cipherTextSize;
Marshal.Copy
(
cipherText,
0,
cipherBlob.pbData,
cipherBlob.cbData);
}
catch (Exception ex)
{
throw new Exception
(
"Exception marshalling data. " +
ex.Message);
}
var entropyBlob = new DataBlob();
int dwFlags;
if (Store.UseMachineStore == _store)
{
//Using the machine store, should be providing entropy.
dwFlags =
CryptprotectLocalMachine | CryptprotectUiForbidden;
//Check to see if the entropy is null
if (null == optionalEntropy)
{
//Allocate something
optionalEntropy = new byte[0];
}
try
{
int bytesSize = optionalEntropy.Length;
entropyBlob.pbData = Marshal.AllocHGlobal(bytesSize);
if (IntPtr.Zero == entropyBlob.pbData)
{
throw new Exception("Unable to allocate entropy buffer.");
}
entropyBlob.cbData = bytesSize;
Marshal.Copy
(
optionalEntropy,
0,
entropyBlob.pbData,
bytesSize);
}
catch (Exception ex)
{
throw new Exception
(
"Exception entropy marshalling data. " +
ex.Message);
}
}
else
{
//Using the user store
dwFlags = CryptprotectUiForbidden;
}
bool retVal = dataDescription != null && CryptUnprotectData
(
ref cipherBlob,
dataDescription,
ref
entropyBlob,
IntPtr.Zero,
ref prompt,
dwFlags,
ref plainTextBlob);
if (false == retVal)
{
throw new Exception
(
"Decryption failed. " +
GetErrorMessage(Marshal.GetLastWin32Error()));
}
//Free the blob and entropy.
if (IntPtr.Zero != cipherBlob.pbData)
{
Marshal.FreeHGlobal(cipherBlob.pbData);
}
if (IntPtr.Zero != entropyBlob.pbData)
{
Marshal.FreeHGlobal(entropyBlob.pbData);
}
}
catch (Exception ex)
{
MessageBox.Show(@"Exception decrypting. " + ex.Message);
}
var plainText = new byte[plainTextBlob.cbData];
Marshal.Copy
(
plainTextBlob.pbData,
plainText,
0,
plainTextBlob.cbData);
Marshal.FreeHGlobal(plainTextBlob.pbData);
return plainText;
}
private DataBlob readHeader(BinaryReader reader) {
DataBlob metadata = new DataBlob();
metadata.imageWidth = reader.ReadUInt16();
metadata.imageHeight = reader.ReadUInt16();
metadata.channelWidth = reader.ReadUInt16();
metadata.channelHeight = reader.ReadUInt16();
metadata.quantizeQuality = reader.ReadByte();
metadata.samplingMode = (DataBlob.Samples)reader.ReadByte();
return metadata;
}
private void setupBlobs(DataBlob metadata) {
C1 = new DataBlob();
C2 = new DataBlob();
C3 = new DataBlob();
V2 = new DataBlob();
V3 = new DataBlob();
C1.type = C2.type = C3.type = DataBlob.Type.Channels;
V2.type = V3.type = DataBlob.Type.Vectors;
//import metadata onto channels
C1.imageWidth = C2.imageWidth = C3.imageWidth = metadata.imageWidth;
C1.imageHeight = C2.imageHeight = C3.imageHeight = metadata.imageHeight;
C1.channelWidth = C2.channelWidth = C3.channelWidth = metadata.channelWidth;
C1.channelHeight = C2.channelHeight = C3.channelHeight = metadata.channelHeight;
C1.quantizeQuality = C2.quantizeQuality = C3.quantizeQuality = metadata.quantizeQuality;
C1.samplingMode = C2.samplingMode = C3.samplingMode = metadata.samplingMode;
Chunker c = new Chunker(8, metadata.channelWidth, metadata.channelHeight, metadata.channelWidth, 1);
V2.imageWidth = V3.imageWidth = metadata.imageWidth;
V2.imageHeight = V3.imageHeight = metadata.imageHeight;
V2.channelWidth = V3.channelWidth = c.getChunksWide();
V2.channelHeight = V3.channelHeight = c.getChunksHigh();
V2.quantizeQuality = V3.quantizeQuality = metadata.quantizeQuality;
V2.samplingMode = V3.samplingMode = metadata.samplingMode;
//Allocate space for incoming data
C1.channels = new byte[3][];
C2.channels = new byte[3][];
C3.channels = new byte[3][];
V2.channels = new byte[3][];
V3.channels = new byte[3][];
int cMajor = C1.channelWidth * C1.channelHeight;
Size sizeMinor = Subsample.getPaddedCbCrSize(new Size(C1.channelWidth, C1.channelHeight), C1.samplingMode);
int cMinor = sizeMinor.Width * sizeMinor.Height;
C1.channels[0] = new byte[cMajor];
C2.channels[0] = new byte[cMajor];
C3.channels[0] = new byte[cMajor];
C1.channels[1] = new byte[cMinor];
C2.channels[1] = new byte[cMinor];
C3.channels[1] = new byte[cMinor];
C1.channels[2] = new byte[cMinor];
C2.channels[2] = new byte[cMinor];
C3.channels[2] = new byte[cMinor];
cMajor = V2.channelWidth * V2.channelHeight;
sizeMinor = Subsample.getCbCrSize(new Size(V2.channelWidth, V2.channelHeight), V2.samplingMode);
cMinor = sizeMinor.Width * sizeMinor.Height;
V2.channels[0] = new byte[cMajor];
V3.channels[0] = new byte[cMajor];
V2.channels[1] = new byte[cMinor];
V3.channels[1] = new byte[cMinor];
V2.channels[2] = new byte[cMinor];
V3.channels[2] = new byte[cMinor];
}
protected static void writeChannels(BinaryWriter writer, DataBlob ch) {
Chunker c = new Chunker(8, ch.channelWidth, ch.channelHeight, ch.channelWidth, 1);
writeChannel(writer, ch.channels[0], c);
Size s = Subsample.deduceCbCrSize(ch);
c = new Chunker(8, s.Width, s.Height, s.Width, 1);
writeChannel(writer, ch.channels[1], c);
writeChannel(writer, ch.channels[2], c);
}
/// <summary>
/// Returns the byte representation of the serialized store.
/// </summary>
/// <param name="type">One of the <see cref="CertificateStoreType"/> values.</param>
/// <returns>An array of bytes that represents the encoded store.</returns>
/// <exception cref="CertificateException">An error occurs while saving the store to the memory buffer.</exception>
private byte[] GetCerBuffer(CertificateStoreType type) {
DataBlob data = new DataBlob();
try {
data.cbData = 0;
data.pbData = IntPtr.Zero;
if (SspiProvider.CertSaveStore(this.Handle, SecurityConstants.X509_ASN_ENCODING | SecurityConstants.PKCS_7_ASN_ENCODING, (int)type, SecurityConstants.CERT_STORE_SAVE_TO_MEMORY, ref data, 0) == 0)
throw new CertificateException("Unable to get the certificate data.");
data.pbData = Marshal.AllocHGlobal(data.cbData);
if (SspiProvider.CertSaveStore(this.Handle, SecurityConstants.X509_ASN_ENCODING | SecurityConstants.PKCS_7_ASN_ENCODING, (int)type, SecurityConstants.CERT_STORE_SAVE_TO_MEMORY, ref data, 0) == 0)
throw new CertificateException("Unable to get the certificate data.");
byte[] ret = new byte[data.cbData];
Marshal.Copy(data.pbData, ret, 0, data.cbData);
return ret;
} finally {
if (data.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(data.pbData);
}
}
protected virtual void clean() {
isDirty = false;
state = null;
}
protected override void clean()
{
base.clean();
state = null;
vState = null;
Address upstreamNow = properties["inChannelsNow"].input;
if (upstreamNow == null)
{
return;
}
Address upstreamPast = properties["inChannelsPast"].input;
if (upstreamPast == null)
{
return;
}
DataBlob stateNow = upstreamNow.node.getData(upstreamNow.port);
if (stateNow == null)
{
return;
}
DataBlob statePast = upstreamPast.node.getData(upstreamPast.port);
if (statePast == null)
{
return;
}
if (stateNow.type != DataBlob.Type.Channels || stateNow.channels == null)
{
return;
}
if (statePast.type != DataBlob.Type.Channels || statePast.channels == null)
{
return;
}
//check resolutions match
if (stateNow.channels[0].Length != statePast.channels[0].Length ||
stateNow.channels[1].Length != statePast.channels[1].Length ||
stateNow.channels[2].Length != statePast.channels[2].Length)
{
return;
}
state = stateNow.clone();
vState = stateNow.clone();
//create copy of channels for local use.
byte[][] diffChannels = new byte[state.channels.Length][];
diffChannels[0] = new byte[state.channels[0].Length];
diffChannels[1] = new byte[state.channels[1].Length];
diffChannels[2] = new byte[state.channels[2].Length];
byte[][] vectors = new byte[3][];
state.channels = diffChannels;
vState.channels = vectors;
state.bmp = null;
vState.bmp = null;
state.type = DataBlob.Type.Channels;
vState.type = DataBlob.Type.Vectors;
calcMoVec(statePast.channels, stateNow.channels);
}
private bool validateInput() {
Address upC1 = properties["inChannels"].input;
if (upC1 == null) return false;
Address upC2 = properties["inChannels2"].input;
if (upC2 == null) return false;
Address upV2 = properties["inVectors2"].input;
if (upV2 == null) return false;
inC1 = upC1.node.getData(upC1.port);
inC2 = upC2.node.getData(upC2.port);
inV2 = upV2.node.getData(upV2.port);
if (inC1 == null || inC1.type != DataBlob.Type.Channels || inC1.channels == null)
return false;
if (inC2 == null || inC2.type != DataBlob.Type.Channels || inC2.channels == null)
return false;
if (inV2 == null || inV2.type != DataBlob.Type.Vectors || inV2.channels == null)
return false;
if (inC1.channels[0].Length != inC2.channels[0].Length ||
inC1.channels[1].Length != inC2.channels[1].Length ||
inC1.channels[2].Length != inC2.channels[2].Length) {
return false;
}
return true;
}
private static extern bool CryptUnprotectData( ref DataBlob pCipherText, ref string pszDescription, ref DataBlob pEntropy, IntPtr pReserved, IntPtr pPrompt, CryptProtectFlags dwFlags, ref DataBlob pPlainText );
private void readChannels(BinaryReader reader, DataBlob ch) {
Chunker c = new Chunker(8, ch.channelWidth, ch.channelHeight, ch.channelWidth, 1);
readChannel(reader, ch.channels[0], c);
Size s = Subsample.deduceCbCrSize(ch);
c = new Chunker(8, s.Width, s.Height, s.Width, 1);
readChannel(reader, ch.channels[1], c);
readChannel(reader, ch.channels[2], c);
}
/// <summary>
/// Finds a certificate with a matching subject name.
/// </summary>
/// <param name="name">The X500 string to search for.</param>
/// <param name="previous">The previous certificate.</param>
/// <returns>A <see cref="Certificate"/> with a matching subject name -or- a null reference (<b>Nothing</b> in Visual Basic) if no matching certificate could be found in the store.</returns>
/// <exception cref="ArgumentNullException"><paramref name="name"/> is a null reference (<b>Nothing</b> in Visual Basic).</exception>
/// <exception cref="ArgumentException"><paramref name="name"/> is invalid.</exception>
/// <exception cref="CertificateException">An error occurs while encoding the specified string.</exception>
public Certificate FindCertificateBySubjectName(string name, Certificate previous) {
if (name == null)
throw new ArgumentNullException();
if (name.Length == 0)
throw new ArgumentException();
IntPtr prev, cert = IntPtr.Zero;
if (previous == null)
prev = IntPtr.Zero;
else
prev = SspiProvider.CertDuplicateCertificateContext(previous.Handle);
DataBlob data = new DataBlob();
if (SspiProvider.CertStrToName(SecurityConstants.X509_ASN_ENCODING | SecurityConstants.PKCS_7_ASN_ENCODING, name, SecurityConstants.CERT_X500_NAME_STR, IntPtr.Zero, IntPtr.Zero, ref data.cbData, IntPtr.Zero) == 0)
throw new CertificateException("Could not encode the specified string. [is the string a valid X500 string?]");
data.pbData = Marshal.AllocHGlobal(data.cbData);
try {
if (SspiProvider.CertStrToName(SecurityConstants.X509_ASN_ENCODING | SecurityConstants.PKCS_7_ASN_ENCODING, name, SecurityConstants.CERT_X500_NAME_STR, IntPtr.Zero, data.pbData, ref data.cbData, IntPtr.Zero) == 0)
throw new CertificateException("Could not encode the specified string.");
cert = SspiProvider.CertFindDataBlobCertificateInStore(this.Handle, SecurityConstants.X509_ASN_ENCODING | SecurityConstants.PKCS_7_ASN_ENCODING, 0, SecurityConstants.CERT_FIND_SUBJECT_NAME, ref data, prev);
} finally {
Marshal.FreeHGlobal(data.pbData);
}
if (cert == IntPtr.Zero)
return null;
else
return new Certificate(cert);
}
protected static void writeHeader(BinaryWriter writer, DataBlob info) {
writer.Write((short)info.imageWidth);
writer.Write((short)info.imageHeight);
writer.Write((short)info.channelWidth);
writer.Write((short)info.channelHeight);
writer.Write((byte)info.quantizeQuality);
writer.Write((byte)info.samplingMode);
}
public byte[] Encrypt( byte[] plainTextBytes )
{
if ( description == null )
description = "";
DataBlob plainTextBlob = new DataBlob ( plainTextBytes );
DataBlob cipherTextBlob = new DataBlob ( );
DataBlob entropyBlob = new DataBlob ( entropy );
try {
CryptProtectFlags flags = CryptProtectFlags.UIForbidden;
if ( keyType == DataProtectionKeyType.MachineKey )
flags |= CryptProtectFlags.LocalMachine;
if ( !CryptProtectData ( ref plainTextBlob, description, ref entropyBlob, IntPtr.Zero, IntPtr.Zero, flags, ref cipherTextBlob ) )
throw new COMException ( "CryptProtectData failed." + Marshal.GetLastWin32Error ( ) );
byte[] cipherTextBytes = new byte[ cipherTextBlob.cbData ];
Marshal.Copy ( cipherTextBlob.pbData, cipherTextBytes, 0, cipherTextBlob.cbData );
return cipherTextBytes;
} catch ( Exception ex ) {
throw new Exception ( "DPAPI was unable to encrypt data. " + ex.Message );
} finally {
if ( plainTextBlob.pbData != IntPtr.Zero )
Marshal.FreeHGlobal ( plainTextBlob.pbData );
if ( cipherTextBlob.pbData != IntPtr.Zero )
Marshal.FreeHGlobal ( cipherTextBlob.pbData );
if ( entropyBlob.pbData != IntPtr.Zero )
Marshal.FreeHGlobal ( entropyBlob.pbData );
}
}
/// <summary>
/// Returns the byte representation of the PFX encoded store.
/// </summary>
/// <param name="password">The password to use when encrypting the private keys.</param>
/// <param name="exportPrivateKeys"><b>true</b> if the private keys should be exported [if possible], <b>false</b> otherwise.</param>
/// <returns>An array of bytes that represents the PFX encoded store.</returns>
/// <exception cref="ArgumentNullException"><paramref name="password"/> is a null reference (<b>Nothing</b> in Visual Basic).</exception>
private byte[] GetPfxBuffer(string password, bool exportPrivateKeys) {
if (password == null)
throw new ArgumentNullException();
DataBlob data = new DataBlob();
try {
data.pbData = IntPtr.Zero;
data.cbData = 0;
if (SspiProvider.PFXExportCertStoreEx(Handle, ref data, password, IntPtr.Zero, exportPrivateKeys ? SecurityConstants.EXPORT_PRIVATE_KEYS : 0) == 0)
throw new CertificateException("Could not export the certificate store.");
data.pbData = Marshal.AllocHGlobal(data.cbData);
if (SspiProvider.PFXExportCertStoreEx(Handle, ref data, password, IntPtr.Zero, exportPrivateKeys ? SecurityConstants.EXPORT_PRIVATE_KEYS : 0) == 0)
throw new CertificateException("Could not export the certificate store.");
byte[] buffer = new byte[data.cbData];
Marshal.Copy(data.pbData, buffer, 0, buffer.Length);
return buffer;
} finally {
if (data.pbData != IntPtr.Zero)
Marshal.FreeHGlobal(data.pbData);
}
}
/// <summary>
/// Creates a new certificate store from a PFX/P12 encoded file.
/// </summary>
/// <param name="file">The contents of a PFX file.</param>
/// <param name="password">The password used to encrypt the private key.</param>
/// <param name="exportable"><b>true</b> if the private keys associated with the certificates should be marked as exportable, <b>false</b> otherwise.</param>
/// <param name="location">One of the <see cref="KeysetLocation"/> values.</param>
/// <returns>A <see cref="CertificateStore"/> instance.</returns>
/// <exception cref="ArgumentNullException"><paramref name="file"/> or <paramref name="password"/> is a null reference (<b>Nothing</b> in Visual Basic).</exception>
/// <exception cref="ArgumentException"><paramref name="password"/> is invalid.</exception>
/// <exception cref="CertificateException">An error occurs while loading the PFX file.</exception>
// Thanks go out to Chris Hudel for the implementation of this method.
public static CertificateStore CreateFromPfxFile(byte[] file, string password, bool exportable, KeysetLocation location) {
if (password == null || file == null)
throw new ArgumentNullException("The arguments cannot be null references.");
CertificateStore cs;
DataBlob pPFX = new DataBlob();
// Crypt_data_blob contains two elements,
// cbData = the size of the blob
// pbData = a byte array of [cbData] size containing contents of the .p12 file
pPFX.cbData = file.Length;
// We need to marshal the byte array Bytes into a pointer so that it can be placed
// in the structure (class) for the WinAPI call
IntPtr buffer = Marshal.AllocHGlobal(file.Length);
Marshal.Copy(file, 0, buffer, file.Length);
pPFX.pbData = buffer;
// IF this really is a valid PFX file, then do some work on it
try {
if (SspiProvider.PFXIsPFXBlob(ref pPFX) != 0) {
if (SspiProvider.PFXVerifyPassword(ref pPFX, password, 0) != 0) {
int flags = (int)location;
if (exportable)
flags |= SecurityConstants.CRYPT_EXPORTABLE;
IntPtr m_Handle = SspiProvider.PFXImportCertStore(ref pPFX, password, flags);
if (m_Handle.Equals(IntPtr.Zero)) {
throw new CertificateException("Unable to import the PFX file! [error code = " + Marshal.GetLastWin32Error() + "]");
}
cs = new CertificateStore(m_Handle);
} else {
throw new ArgumentException("The specified password is invalid.");
}
} else {
throw new CertificateException("The specified file is not a PFX file.");
}
} finally {
// Free the pointer
Marshal.FreeHGlobal(buffer);
}
return cs;
}
public static int getCbCrStride(DataBlob data) {
Size unpadded = getCbCrSize(new Size(data.channelWidth, data.channelHeight), data.samplingMode);
if (data.channels[1].Length == unpadded.Width * unpadded.Height) {
return unpadded.Width;
}
Size padded = getPaddedCbCrSize(new Size(data.channelWidth, data.channelHeight), data.samplingMode);
if (data.channels[1].Length == padded.Width * padded.Height) {
return padded.Width;
}
return -1;
}
/// <summary>
/// Gets the string representation of the data blob.
/// </summary>
private string ToDataBlobString()
{
return(Kind + "(" + ToByteArrayString(DataBlob.ToArray()) + ")");
}
/// <summary>
/// Opens a serialized certificate store or a certificate store with signed PKCS7 messages.
/// </summary>
/// <param name="buffer">The bytes of the store to open.</param>
/// <param name="type">One of the <see cref="CertificateStoreType"/> values.</param>
/// <exception cref="ArgumentNullException"><paramref name="buffer"/> is a null reference (<b>Nothing</b> in Visual Basic).</exception>
/// <exception cref="CertificateException">An error occurs while opening the store.</exception>
public CertificateStore(byte[] buffer, CertificateStoreType type) {
if (buffer == null)
throw new ArgumentNullException();
DataBlob data = new DataBlob();
data.cbData = buffer.Length;
data.pbData = Marshal.AllocHGlobal(data.cbData);
Marshal.Copy(buffer, 0, data.pbData, buffer.Length);
IntPtr provider;
if (type == CertificateStoreType.Pkcs7Message)
provider = new IntPtr(SecurityConstants.CERT_STORE_PROV_PKCS7);
else
provider = new IntPtr(SecurityConstants.CERT_STORE_PROV_SERIALIZED);
m_Handle = SspiProvider.CertOpenStoreData(provider, SecurityConstants.X509_ASN_ENCODING | SecurityConstants.PKCS_7_ASN_ENCODING, IntPtr.Zero, 0, ref data);
Marshal.FreeHGlobal(data.pbData);
if (m_Handle == IntPtr.Zero)
throw new CertificateException("An error occurs while opening the store.");
}
private void open(object sender, EventArgs e)
{
soil();
clean();
state = new DataBlob();
state.type = DataBlob.Type.Channels;
state.channels = new byte[3][];
using (Stream stream = new FileStream(inPath, FileMode.Open, FileAccess.Read, FileShare.Read)) {
using (BinaryReader reader = new BinaryReader(stream, Encoding.Default)) {
state.imageWidth = reader.ReadUInt16();
state.imageHeight = reader.ReadUInt16();
state.channelWidth = reader.ReadUInt16();
state.channelHeight = reader.ReadUInt16();
state.quantizeQuality = reader.ReadByte();
state.samplingMode = (DataBlob.Samples)reader.ReadByte();
state.channels[0] = new byte[state.channelWidth * state.channelHeight];
byte[] data = new byte[64];
byte count, val;
//======================
//===== Y Channel ======
//======================
Chunker c = new Chunker(8, state.channelWidth, state.channelHeight, state.channelWidth, 1);
var indexer = Chunker.zigZag8Index();
for (int iChunk = 0; iChunk < c.getNumChunks(); iChunk++)
{
for (int iPixel = 0; iPixel < 64;)
{
val = reader.ReadByte();
if (val != rleToken)
{
data[iPixel++] = val;
}
else
{
count = reader.ReadByte();
val = reader.ReadByte();
while (count > 0)
{
data[iPixel++] = val;
count--;
}
}
}
c.setZigZag8Block(state.channels[0], data, iChunk);
}
//===========================
//===== Cr, Cb Channels =====
//===========================
Size len = Subsample.getPaddedCbCrSize(new Size(state.channelWidth, state.channelHeight), state.samplingMode);
state.channels[1] = new byte[len.Width * len.Height];
state.channels[2] = new byte[state.channels[1].Length];
c = new Chunker(8, len.Width, len.Height, len.Width, 1);
indexer = Chunker.zigZag8Index();
for (int channel = 1; channel < state.channels.Length; channel++)
{
for (int iChunk = 0; iChunk < c.getNumChunks(); iChunk++)
{
for (int iPixel = 0; iPixel < 64;)
{
val = reader.ReadByte();
if (val != rleToken)
{
data[iPixel++] = val;
}
else
{
count = reader.ReadByte();
val = reader.ReadByte();
while (count > 0)
{
data[iPixel++] = val;
count--;
}
}
}
c.setZigZag8Block(state.channels[channel], data, iChunk);
}
}
}
} //close file
}
/// <summary>
/// Finds a certificate with a matching hash.
/// </summary>
/// <param name="hash">The hash to search for.</param>
/// <param name="hashType">One of the HashType values.</param>
/// <returns>The <see cref="Certificate"/> with the matching hash -or- a null reference (<b>Nothing</b> in Visual Basic) if no certificate with that hash could be found in the store.</returns>
/// <exception cref="ArgumentNullException"><paramref name="hash"/> is a null reference (<b>Nothing</b> in Visual Basic).</exception>
public Certificate FindCertificateByHash(byte[] hash, HashType hashType) {
if (hash == null)
throw new ArgumentNullException();
int findType;
if (hashType == HashType.SHA1)
findType = SecurityConstants.CERT_FIND_SHA1_HASH;
else if (hashType == HashType.MD5)
findType = SecurityConstants.CERT_FIND_MD5_HASH;
else
findType = SecurityConstants.CERT_FIND_HASH;
DataBlob data = new DataBlob();
data.cbData = hash.Length;
data.pbData = Marshal.AllocHGlobal(hash.Length);
Marshal.Copy(hash, 0, data.pbData, hash.Length);
IntPtr cert = SspiProvider.CertFindDataBlobCertificateInStore(this.Handle, SecurityConstants.X509_ASN_ENCODING | SecurityConstants.PKCS_7_ASN_ENCODING, 0, findType, ref data, IntPtr.Zero);
Marshal.FreeHGlobal(data.pbData);
if (cert == IntPtr.Zero)
return null;
else
return new Certificate(cert);
}
/// <summary>
/// Finds a certificate with a matching key identifier.
/// </summary>
/// <param name="keyID">The key identifier to search for.</param>
/// <returns>The <see cref="Certificate"/> with the matching key identifier -or- a null reference (<b>Nothing</b> in Visual Basic) if no matching certificate could be found in the store.</returns>
/// <exception cref="ArgumentNullException"><paramref name="keyID"/> is a null reference (<b>Nothing</b> in Visual Basic).</exception>
/// <exception cref="ArgumentException"><paramref name="keyID"/> is invalid.</exception>
public Certificate FindCertificateByKeyIdentifier(byte[] keyID) {
if (keyID == null)
throw new ArgumentNullException();
if (keyID.Length == 0)
throw new ArgumentException();
DataBlob data = new DataBlob();
data.cbData = keyID.Length;
data.pbData = Marshal.AllocHGlobal(keyID.Length);
Marshal.Copy(keyID, 0, data.pbData, keyID.Length);
IntPtr cert = SspiProvider.CertFindDataBlobCertificateInStore(this.Handle, SecurityConstants.X509_ASN_ENCODING | SecurityConstants.PKCS_7_ASN_ENCODING, 0, SecurityConstants.CERT_FIND_KEY_IDENTIFIER, ref data, IntPtr.Zero);
Marshal.FreeHGlobal(data.pbData);
if (cert == IntPtr.Zero)
return null;
else
return new Certificate(cert);
}
public static extern bool CryptProtectData(ref DataBlob dataIn, string description, ref DataBlob optionalEntropy, IntPtr reserved, IntPtr promptStruct, uint flags, out DataBlob dataOut);
