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PubnubSlv.cs
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PubnubSlv.cs
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using System;
using System.Net;
using System.Text;
using System.Collections.Generic;
using System.IO;
using System.Runtime.Serialization.Json;
using System.ComponentModel;
namespace Pubnub
{
// INotifyPropertyChanged provides a standard event for objects to notify clients that one of its properties has changed
public class PubnubClass : INotifyPropertyChanged
{
// Common property changed event
public event PropertyChangedEventHandler PropertyChanged;
public void RaisePropertyChanged(string propertyName)
{
var handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(propertyName));
}
}
// Message that is published through PubNub
private object _ReturnMessage = new object();
public object ReturnMessage
{
get
{
return _ReturnMessage;
}
set
{
_ReturnMessage = value; RaisePropertyChanged("ReturnMessage");
}
}
// Publish
private List<object> _Publish = new List<object>();
public List<object> Publish
{
get
{
return _Publish;
}
set
{
_Publish = value;
RaisePropertyChanged("Publish");
}
}
// History of Messages
private List<object> _History = new List<object>();
public List<object> History { get { return _History; } set { _History = value; RaisePropertyChanged("History"); } }
// Subscribe
private List<object> _Subscribe = new List<object>();
public List<object> Subscribe
{
get
{
return _Subscribe;
}
set
{
_Subscribe = value;
if (Int64.Parse(value[1].ToString()) > 0)
_subscribe(value[2].ToString(), Int64.Parse(value[1].ToString()) - 1);
RaisePropertyChanged("Subscribe");
}
}
// Time stamp
private List<object> _Time = new List<object>();
public List<object> Time { get { return _Time; } set { _Time = value; RaisePropertyChanged("Time"); } }
private string ORIGIN = "pubsub.pubnub.com";
private int LIMIT = 1800;
private string PUBLISH_KEY = "";
private string SUBSCRIBE_KEY = "";
private string SECRET_KEY = "";
private bool SSL = false;
public delegate bool Procedure(object message);
/**
* PubNub 3.0
*
* Prepare PubNub Class State.
*
* @param string Publish Key.
* @param string Subscribe Key.
* @param string Secret Key.
* @param bool SSL Enabled.
*/
public PubnubClass(string publish_key, string subscribe_key, string secret_key, bool ssl_on)
{
this.init(publish_key, subscribe_key, secret_key, ssl_on);
}
/**
* PubNub 2.0 Compatibility
*
* Prepare PubNub Class State.
*
* @param string Publish Key.
* @param string Subscribe Key.
*/
public PubnubClass( string publish_key, string subscribe_key)
{
this.init(publish_key, subscribe_key, "", false);
}
/**
* PubNub 3.0 without SSL
*
* Prepare PubNub Class State.
*
* @param string Publish Key.
* @param string Subscribe Key.
* @param string Secret Key.
*/
public PubnubClass( string publish_key, string subscribe_key, string secret_key)
{
this.init(publish_key, subscribe_key, secret_key, false);
}
/**
* Init
*
* Prepare PubNub Class State.
*
* @param string Publish Key.
* @param string Subscribe Key.
* @param string Secret Key.
* @param bool SSL Enabled.
*/
public void init(string publish_key, string subscribe_key, string secret_key, bool ssl_on)
{
this.PUBLISH_KEY = publish_key;
this.SUBSCRIBE_KEY = subscribe_key;
this.SECRET_KEY = secret_key;
this.SSL = ssl_on;
// SSL On?
if (this.SSL)
{
this.ORIGIN = "https://" + this.ORIGIN;
}
else
{
this.ORIGIN = "http://" + this.ORIGIN;
}
}
/**
* History
*
* Load history from a channel.
*
* @param String channel name.
* @param int limit history count response.
* @return ListArray of history.
*/
public void history(string channel, int limit)
{
List<string> url = new List<string>();
url.Add("history");
url.Add(this.SUBSCRIBE_KEY);
url.Add(channel);
url.Add("0");
url.Add(limit.ToString());
_request(url, ResponseType.History);
}
/**
* Publish
*
* Send a message to a channel.
*
* @param String channel name.
* @param List<object> info.
* @return bool false on fail.
*/
public void publish(string channel, object message)
{
// Generate String to Sign
string signature = "0";
if (this.SECRET_KEY.Length > 0)
{
StringBuilder string_to_sign = new StringBuilder();
string_to_sign
.Append(this.PUBLISH_KEY)
.Append('/')
.Append(this.SUBSCRIBE_KEY)
.Append('/')
.Append(this.SECRET_KEY)
.Append('/')
.Append(channel)
.Append('/')
.Append(SerializeToJsonString(message)); // 1
;
// Sign Message
signature = md5(string_to_sign.ToString());
}
// Build URL
List<string> url = new List<string>();
url.Add("publish");
url.Add(this.PUBLISH_KEY);
url.Add(this.SUBSCRIBE_KEY);
url.Add(signature);
url.Add(channel);
url.Add("0");
url.Add(SerializeToJsonString(message));
_request(url, ResponseType.Publish);
}
/**
* Subscribe
*
* This function is BLOCKING.
* Listen for a message on a channel.
*
* @param string channel name.
* @param Procedure function callback.
*/
public void subscribe(string channel)
{
this._subscribe(channel, 0);
}
/**
* Subscribe - Private Interface
*
* @param string channel name.
* @param Procedure function callback.
* @param string timetoken.
*/
private void _subscribe(string channel, object timetoken)
{
// Begin Recusive Subscribe
try
{
// Build URL
List<string> url = new List<string>();
url.Add("subscribe");
url.Add(this.SUBSCRIBE_KEY);
url.Add(channel);
url.Add("0");
url.Add(timetoken.ToString());
// Wait for Message
_request(url, ResponseType.Subscribe);
if (Subscribe.Count > 0)
{
// Update TimeToken
if (Subscribe[1].ToString().Length > 0)
timetoken = (object)Subscribe[1];
}
}
catch
{
System.Threading.Thread.Sleep(1000);
this._subscribe(channel, timetoken);
}
}
/**
* Time
*
* Timestamp from PubNub Cloud.
*
* @return object timestamp.
*/
public void time()
{
List<string> url = new List<string>();
url.Add("time");
url.Add("0");
_request(url, ResponseType.Time);
}
/**
* Request URL
*
* @param List<string> request of url directories.
* @return List<object> from JSON response.
*/
private void _request(List<string> url_components, ResponseType type)
{
List<object> result = new List<object>();
StringBuilder url = new StringBuilder();
StringBuilder sb = new StringBuilder();
// Add Origin To The Request
url.Append(this.ORIGIN);
// Generate URL with UTF-8 Encoding
foreach (string url_bit in url_components)
{
url.Append("/");
url.Append(_encodeURIcomponent(url_bit));
}
// Fail if string too long
if (url.Length > this.LIMIT)
{
result.Add(0);
result.Add("Message Too Long.");
//return result;
}
// Create Request
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url.ToString());
// Make request with the following inline Async Call back
IAsyncResult result1 = request.BeginGetResponse(new AsyncCallback((asynchronousResult) =>
{
System.Windows.Deployment.Current.Dispatcher.BeginInvoke(delegate()
{
HttpWebRequest aRequest = (HttpWebRequest)asynchronousResult.AsyncState;
HttpWebResponse aResponse = (HttpWebResponse)aRequest.EndGetResponse(asynchronousResult);
using (StreamReader streamReader = new StreamReader(aResponse.GetResponseStream()))
{
// Deserialize the result
result = DeserializeToListOfObject(streamReader.ReadToEnd());
if (result[0] is object[])
{
foreach (object message in (object[])result[0])
{
this.ReturnMessage = message;
}
}
switch (type)
{
case ResponseType.Publish:
result.Add(url_components[4]);
Publish = result;
break;
case ResponseType.History:
History = result;
break;
case ResponseType.Time:
Time = result;
break;
default:
result.Add(url_components[2]);
Subscribe = result;
break;
}
}
});
}), request);
}
/// <summary>
/// Serialize the given object into JSON
/// </summary>
/// <param name="objectToSerialize"></param>
/// <returns></returns>
public static string SerializeToJsonString(object objectToSerialize)
{
using (MemoryStream ms = new MemoryStream())
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(objectToSerialize.GetType());
serializer.WriteObject(ms, objectToSerialize);
ms.Position = 0;
using (StreamReader reader = new StreamReader(ms))
{
return reader.ReadToEnd();
}
}
}
/// <summary>
/// Deserialize JSON string into List of Objects
/// </summary>
/// <param name="jsonString"></param>
/// <returns></returns>
public static List<object> DeserializeToListOfObject(string jsonString)
{
using (MemoryStream ms = new MemoryStream(Encoding.Unicode.GetBytes(jsonString)))
{
DataContractJsonSerializer serializer =
new DataContractJsonSerializer(typeof(List<object>));
return (List<object>)serializer.ReadObject(ms);
}
}
private string _encodeURIcomponent(string s)
{
StringBuilder o = new StringBuilder();
foreach (char ch in s.ToCharArray())
{
if (isUnsafe(ch))
{
o.Append('%');
o.Append(toHex(ch / 16));
o.Append(toHex(ch % 16));
}
else o.Append(ch);
}
return o.ToString();
}
private char toHex(int ch)
{
return (char)(ch < 10 ? '0' + ch : 'A' + ch - 10);
}
private bool isUnsafe(char ch)
{
return " ~`!@#$%^&*()+=[]\\{}|;':\",./<>?".IndexOf(ch) >= 0;
}
public static string md5(string text)
{
MD5 md5 = new MD5CryptoServiceProvider();
byte[] data = Encoding.Unicode.GetBytes(text);
byte[] hash = md5.ComputeHash(data);
string hexaHash = "";
foreach (byte b in hash) hexaHash += String.Format("{0:x2}", b);
return hexaHash;
}
enum ResponseType
{
Publish,
History,
Time,
Subscribe
}
}
public class MD5CryptoServiceProvider : MD5
{
public MD5CryptoServiceProvider()
: base()
{
}
}
/// <summary>
/// Summary description for MD5.
/// </summary>
public class MD5 : IDisposable
{
static public MD5 Create(string hashName)
{
if (hashName == "MD5")
return new MD5();
else
throw new NotSupportedException();
}
static public String GetMd5String(String source)
{
MD5 md = MD5CryptoServiceProvider.Create();
byte[] hash;
//Create a new instance of ASCIIEncoding to
//convert the string into an array of Unicode bytes.
UTF8Encoding enc = new UTF8Encoding();
// ASCIIEncoding enc = new ASCIIEncoding();
//Convert the string into an array of bytes.
byte[] buffer = enc.GetBytes(source);
//Create the hash value from the array of bytes.
hash = md.ComputeHash(buffer);
StringBuilder sb = new StringBuilder();
foreach (byte b in hash)
sb.Append(b.ToString("x2"));
return sb.ToString();
}
static public MD5 Create()
{
return new MD5();
}
#region base implementation of the MD5
#region constants
private const byte S11 = 7;
private const byte S12 = 12;
private const byte S13 = 17;
private const byte S14 = 22;
private const byte S21 = 5;
private const byte S22 = 9;
private const byte S23 = 14;
private const byte S24 = 20;
private const byte S31 = 4;
private const byte S32 = 11;
private const byte S33 = 16;
private const byte S34 = 23;
private const byte S41 = 6;
private const byte S42 = 10;
private const byte S43 = 15;
private const byte S44 = 21;
static private byte[] PADDING = new byte[] {
0x80, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
#endregion
#region F, G, H and I are basic MD5 functions.
static private uint F(uint x, uint y, uint z)
{
return (((x) & (y)) | ((~x) & (z)));
}
static private uint G(uint x, uint y, uint z)
{
return (((x) & (z)) | ((y) & (~z)));
}
static private uint H(uint x, uint y, uint z)
{
return ((x) ^ (y) ^ (z));
}
static private uint I(uint x, uint y, uint z)
{
return ((y) ^ ((x) | (~z)));
}
#endregion
#region rotates x left n bits.
/// <summary>
/// rotates x left n bits.
/// </summary>
/// <param name="x"></param>
/// <param name="n"></param>
/// <returns></returns>
static private uint ROTATE_LEFT(uint x, byte n)
{
return (((x) << (n)) | ((x) >> (32 - (n))));
}
#endregion
#region FF, GG, HH, and II transformations
/// FF, GG, HH, and II transformations
/// for rounds 1, 2, 3, and 4.
/// Rotation is separate from addition to prevent recomputation.
static private void FF(ref uint a, uint b, uint c, uint d, uint x, byte s, uint ac)
{
(a) += F((b), (c), (d)) + (x) + (uint)(ac);
(a) = ROTATE_LEFT((a), (s));
(a) += (b);
}
static private void GG(ref uint a, uint b, uint c, uint d, uint x, byte s, uint ac)
{
(a) += G((b), (c), (d)) + (x) + (uint)(ac);
(a) = ROTATE_LEFT((a), (s));
(a) += (b);
}
static private void HH(ref uint a, uint b, uint c, uint d, uint x, byte s, uint ac)
{
(a) += H((b), (c), (d)) + (x) + (uint)(ac);
(a) = ROTATE_LEFT((a), (s));
(a) += (b);
}
static private void II(ref uint a, uint b, uint c, uint d, uint x, byte s, uint ac)
{
(a) += I((b), (c), (d)) + (x) + (uint)(ac);
(a) = ROTATE_LEFT((a), (s));
(a) += (b);
}
#endregion
#region context info
/// <summary>
/// state (ABCD)
/// </summary>
uint[] state = new uint[4];
/// <summary>
/// number of bits, modulo 2^64 (lsb first)
/// </summary>
uint[] count = new uint[2];
/// <summary>
/// input buffer
/// </summary>
byte[] buffer = new byte[64];
#endregion
internal MD5()
{
Initialize();
}
/// <summary>
/// MD5 initialization. Begins an MD5 operation, writing a new context.
/// </summary>
/// <remarks>
/// The RFC named it "MD5Init"
/// </remarks>
public virtual void Initialize()
{
count[0] = count[1] = 0;
// Load magic initialization constants.
state[0] = 0x67452301;
state[1] = 0xefcdab89;
state[2] = 0x98badcfe;
state[3] = 0x10325476;
}
/// <summary>
/// MD5 block update operation. Continues an MD5 message-digest
/// operation, processing another message block, and updating the
/// context.
/// </summary>
/// <param name="input"></param>
/// <param name="offset"></param>
/// <param name="count"></param>
/// <remarks>The RFC Named it MD5Update</remarks>
protected virtual void HashCore(byte[] input, int offset, int count)
{
int i;
int index;
int partLen;
// Compute number of bytes mod 64
index = (int)((this.count[0] >> 3) & 0x3F);
// Update number of bits
if ((this.count[0] += (uint)((uint)count << 3)) < ((uint)count << 3))
this.count[1]++;
this.count[1] += ((uint)count >> 29);
partLen = 64 - index;
// Transform as many times as possible.
if (count >= partLen)
{
Buffer.BlockCopy(input, offset, this.buffer, index, partLen);
Transform(this.buffer, 0);
for (i = partLen; i + 63 < count; i += 64)
Transform(input, offset + i);
index = 0;
}
else
i = 0;
// Buffer remaining input
Buffer.BlockCopy(input, offset + i, this.buffer, index, count - i);
}
/// <summary>
/// MD5 finalization. Ends an MD5 message-digest operation, writing the
/// the message digest and zeroizing the context.
/// </summary>
/// <returns>message digest</returns>
/// <remarks>The RFC named it MD5Final</remarks>
protected virtual byte[] HashFinal()
{
byte[] digest = new byte[16];
byte[] bits = new byte[8];
int index, padLen;
// Save number of bits
Encode(bits, 0, this.count, 0, 8);
// Pad out to 56 mod 64.
index = (int)((uint)(this.count[0] >> 3) & 0x3f);
padLen = (index < 56) ? (56 - index) : (120 - index);
HashCore(PADDING, 0, padLen);
// Append length (before padding)
HashCore(bits, 0, 8);
// Store state in digest
Encode(digest, 0, state, 0, 16);
// Zeroize sensitive information.
count[0] = count[1] = 0;
state[0] = 0;
state[1] = 0;
state[2] = 0;
state[3] = 0;
// initialize again, to be ready to use
Initialize();
return digest;
}
/// <summary>
/// MD5 basic transformation. Transforms state based on 64 bytes block.
/// </summary>
/// <param name="block"></param>
/// <param name="offset"></param>
private void Transform(byte[] block, int offset)
{
uint a = state[0], b = state[1], c = state[2], d = state[3];
uint[] x = new uint[16];
Decode(x, 0, block, offset, 64);
// Round 1
FF(ref a, b, c, d, x[0], S11, 0xd76aa478); /* 1 */
FF(ref d, a, b, c, x[1], S12, 0xe8c7b756); /* 2 */
FF(ref c, d, a, b, x[2], S13, 0x242070db); /* 3 */
FF(ref b, c, d, a, x[3], S14, 0xc1bdceee); /* 4 */
FF(ref a, b, c, d, x[4], S11, 0xf57c0faf); /* 5 */
FF(ref d, a, b, c, x[5], S12, 0x4787c62a); /* 6 */
FF(ref c, d, a, b, x[6], S13, 0xa8304613); /* 7 */
FF(ref b, c, d, a, x[7], S14, 0xfd469501); /* 8 */
FF(ref a, b, c, d, x[8], S11, 0x698098d8); /* 9 */
FF(ref d, a, b, c, x[9], S12, 0x8b44f7af); /* 10 */
FF(ref c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
FF(ref b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
FF(ref a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
FF(ref d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
FF(ref c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
FF(ref b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
// Round 2
GG(ref a, b, c, d, x[1], S21, 0xf61e2562); /* 17 */
GG(ref d, a, b, c, x[6], S22, 0xc040b340); /* 18 */
GG(ref c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
GG(ref b, c, d, a, x[0], S24, 0xe9b6c7aa); /* 20 */
GG(ref a, b, c, d, x[5], S21, 0xd62f105d); /* 21 */
GG(ref d, a, b, c, x[10], S22, 0x2441453); /* 22 */
GG(ref c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
GG(ref b, c, d, a, x[4], S24, 0xe7d3fbc8); /* 24 */
GG(ref a, b, c, d, x[9], S21, 0x21e1cde6); /* 25 */
GG(ref d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
GG(ref c, d, a, b, x[3], S23, 0xf4d50d87); /* 27 */
GG(ref b, c, d, a, x[8], S24, 0x455a14ed); /* 28 */
GG(ref a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
GG(ref d, a, b, c, x[2], S22, 0xfcefa3f8); /* 30 */
GG(ref c, d, a, b, x[7], S23, 0x676f02d9); /* 31 */
GG(ref b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
// Round 3
HH(ref a, b, c, d, x[5], S31, 0xfffa3942); /* 33 */
HH(ref d, a, b, c, x[8], S32, 0x8771f681); /* 34 */
HH(ref c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
HH(ref b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
HH(ref a, b, c, d, x[1], S31, 0xa4beea44); /* 37 */
HH(ref d, a, b, c, x[4], S32, 0x4bdecfa9); /* 38 */
HH(ref c, d, a, b, x[7], S33, 0xf6bb4b60); /* 39 */
HH(ref b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
HH(ref a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
HH(ref d, a, b, c, x[0], S32, 0xeaa127fa); /* 42 */
HH(ref c, d, a, b, x[3], S33, 0xd4ef3085); /* 43 */
HH(ref b, c, d, a, x[6], S34, 0x4881d05); /* 44 */
HH(ref a, b, c, d, x[9], S31, 0xd9d4d039); /* 45 */
HH(ref d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
HH(ref c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
HH(ref b, c, d, a, x[2], S34, 0xc4ac5665); /* 48 */
// Round 4
II(ref a, b, c, d, x[0], S41, 0xf4292244); /* 49 */
II(ref d, a, b, c, x[7], S42, 0x432aff97); /* 50 */
II(ref c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
II(ref b, c, d, a, x[5], S44, 0xfc93a039); /* 52 */
II(ref a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
II(ref d, a, b, c, x[3], S42, 0x8f0ccc92); /* 54 */
II(ref c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
II(ref b, c, d, a, x[1], S44, 0x85845dd1); /* 56 */
II(ref a, b, c, d, x[8], S41, 0x6fa87e4f); /* 57 */
II(ref d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
II(ref c, d, a, b, x[6], S43, 0xa3014314); /* 59 */
II(ref b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
II(ref a, b, c, d, x[4], S41, 0xf7537e82); /* 61 */
II(ref d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
II(ref c, d, a, b, x[2], S43, 0x2ad7d2bb); /* 63 */
II(ref b, c, d, a, x[9], S44, 0xeb86d391); /* 64 */
state[0] += a;
state[1] += b;
state[2] += c;
state[3] += d;
// Zeroize sensitive information.
for (int i = 0; i < x.Length; i++)
x[i] = 0;
}
/// <summary>
/// Encodes input (uint) into output (byte). Assumes len is
/// multiple of 4.
/// </summary>
/// <param name="output"></param>
/// <param name="outputOffset"></param>
/// <param name="input"></param>
/// <param name="inputOffset"></param>
/// <param name="count"></param>
private static void Encode(byte[] output, int outputOffset, uint[] input, int inputOffset, int count)
{
int i, j;
int end = outputOffset + count;
for (i = inputOffset, j = outputOffset; j < end; i++, j += 4)
{
output[j] = (byte)(input[i] & 0xff);
output[j + 1] = (byte)((input[i] >> 8) & 0xff);
output[j + 2] = (byte)((input[i] >> 16) & 0xff);
output[j + 3] = (byte)((input[i] >> 24) & 0xff);
}
}
/// <summary>
/// Decodes input (byte) into output (uint). Assumes len is
/// a multiple of 4.
/// </summary>
/// <param name="output"></param>
/// <param name="outputOffset"></param>
/// <param name="input"></param>
/// <param name="inputOffset"></param>
/// <param name="count"></param>
static private void Decode(uint[] output, int outputOffset, byte[] input, int inputOffset, int count)
{
int i, j;
int end = inputOffset + count;
for (i = outputOffset, j = inputOffset; j < end; i++, j += 4)
output[i] = ((uint)input[j]) | (((uint)input[j + 1]) << 8) | (((uint)input[j + 2]) << 16) | (((uint)input[j + 3]) <<
24);
}
#endregion
#region expose the same interface as the regular MD5 object
protected byte[] HashValue;
protected int State;
public virtual bool CanReuseTransform
{
get
{
return true;
}
}
public virtual bool CanTransformMultipleBlocks
{
get
{
return true;
}
}
public virtual byte[] Hash
{
get
{
if (this.State != 0)
throw new InvalidOperationException();
return (byte[])HashValue.Clone();
}
}
public virtual int HashSize
{
get
{
return HashSizeValue;
}
}
protected int HashSizeValue = 128;
public virtual int InputBlockSize
{
get
{
return 1;
}
}
public virtual int OutputBlockSize
{
get
{
return 1;
}
}
public void Clear()
{
Dispose(true);
}
public byte[] ComputeHash(byte[] buffer)
{
return ComputeHash(buffer, 0, buffer.Length);
}
public byte[] ComputeHash(byte[] buffer, int offset, int count)
{
Initialize();
HashCore(buffer, offset, count);
HashValue = HashFinal();
return (byte[])HashValue.Clone();
}
public byte[] ComputeHash(Stream inputStream)
{
Initialize();
int count;
byte[] buffer = new byte[4096];
while (0 < (count = inputStream.Read(buffer, 0, 4096)))
{
HashCore(buffer, 0, count);
}
HashValue = HashFinal();
return (byte[])HashValue.Clone();
}
public int TransformBlock(
byte[] inputBuffer,
int inputOffset,
int inputCount,
byte[] outputBuffer,
int outputOffset
)
{
if (inputBuffer == null)
{
throw new ArgumentNullException("inputBuffer");
}
if (inputOffset < 0)
{
throw new ArgumentOutOfRangeException("inputOffset");
}
if ((inputCount < 0) || (inputCount > inputBuffer.Length))
{
throw new ArgumentException("inputCount");
}
if ((inputBuffer.Length - inputCount) < inputOffset)
{
throw new ArgumentOutOfRangeException("inputOffset");
}
if (this.State == 0)
{
Initialize();
this.State = 1;
}
HashCore(inputBuffer, inputOffset, inputCount);
if ((inputBuffer != outputBuffer) || (inputOffset != outputOffset))
{
Buffer.BlockCopy(inputBuffer, inputOffset, outputBuffer, outputOffset, inputCount);
}
return inputCount;
}
public byte[] TransformFinalBlock(
byte[] inputBuffer,
int inputOffset,
int inputCount
)
{
if (inputBuffer == null)
{
throw new ArgumentNullException("inputBuffer");
}
if (inputOffset < 0)
{
throw new ArgumentOutOfRangeException("inputOffset");
}
if ((inputCount < 0) || (inputCount > inputBuffer.Length))
{
throw new ArgumentException("inputCount");
}
if ((inputBuffer.Length - inputCount) < inputOffset)
{
throw new ArgumentOutOfRangeException("inputOffset");
}
if (this.State == 0)
{
Initialize();
}
HashCore(inputBuffer, inputOffset, inputCount);
HashValue = HashFinal();
byte[] buffer = new byte[inputCount];
Buffer.BlockCopy(inputBuffer, inputOffset, buffer, 0, inputCount);
this.State = 0;
return buffer;
}
#endregion
protected virtual void Dispose(bool disposing)
{
if (!disposing)
Initialize();
}
public void Dispose()
{