|
public ComputeHash ( |
||
| inputStream | ||
| return | byte[] | |
public static byte[] DoubleDigest(byte[] input, int offset, int length)
{
_digest.Dispose();
_digest = new SHA256CryptoServiceProvider();
byte[] first = _digest.ComputeHash(input, offset, length);
return _digest.ComputeHash(first);
}
private bool TestSha(HashAlgorithm alg1, HashAlgorithm alg2)
{
string tstStr = "This is a string that I will be getting the hash of!";
byte[] testHash = System.Text.UTF8Encoding.UTF8.GetBytes(tstStr);
byte[] hash1 = alg1.ComputeHash(testHash, 0, testHash.Length);
byte[] hash2 = alg1.ComputeHash(testHash, 0, testHash.Length);
byte[] hash3 = alg1.ComputeHash(testHash, 0, testHash.Length - 1);
byte[] hash4 = alg2.ComputeHash(testHash);
byte[] hash5 = alg2.ComputeHash(testHash, 0, testHash.Length - 1);
if (hash1.Length != (alg1.HashSize/8)) throw new Exception();
bool res1 = true, res2 = true, res3 = true, res4 = true;
for (int i = 0; i < hash1.Length; i++)
{
res1 &= (hash1[i] == hash2[i]);
res2 &= (hash1[i] == hash3[i]);
res3 &= (hash1[i] == hash4[i]);
res4 &= (hash3[i] == hash5[i]);
}
return res1 && !res2 && res3 && res4;
}
public List<RdcSignature> Chunk(Stream stream, int averagChunkBitLength, int minChunk, int maxChunk, int window)
{
hashAlg = MD5.Create();
hashBuffer = new byte[maxChunk];
hashLength = 0;
int mask = (1 << averagChunkBitLength) - 1;
List<RdcSignature> signatures = new List<RdcSignature>();
long length = stream.Length;
long lastStart = 0;
// get the initial hash window //
int hash = inithash(window, stream);
long position = window; //position starts at window size
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
while (position < length)
{
// chunk boundry is found and chunk is sufficiently large
if ((hash & mask) == 0 && hashLength >= minChunk)
{
lastStart = position;
signatures.Add(new RdcSignature(position, (ushort)hashLength, hashAlg.ComputeHash(hashBuffer, 0, hashLength)));
hashLength = 0;
}
else if (position - lastStart + 1 >= maxChunk) // force a break if the chunk is large enough
{
lastStart = position;
signatures.Add(new RdcSignature(position, (ushort)hashLength, hashAlg.ComputeHash(hashBuffer, 0, hashLength)));
hashLength = 0;
}
// next window's hash //
hash = nexthash(hash, stream);
/////////////////////////
position++;
//if (position % REPORT_BOUNDRY == 0) {
// Console.WriteLine("{0}ms", stopwatch.ElapsedMilliseconds);
// stopwatch.Restart();
//}
}
//If we didn't have a break on the last position of the file
if (hashLength > 0)
{
lastStart = position;
signatures.Add(new RdcSignature(position, (ushort)hashLength, hashAlg.ComputeHash(hashBuffer, 0, hashLength)));
hashLength = 0;
}
return signatures;
}
/// <summary>Compute hash on input stream</summary>
/// <param name="input">The stream to compute hash on.</param>
/// <param name="algorithm"> </param>
/// <returns>The hash as a hexadecimal String.</returns>
public static string ComputeHash(this Stream input, HashAlgorithm algorithm)
{
if (input == null)
throw new ArgumentNullException("input");
#if !SILVERLIGHT
var stream = new BufferedStream(input, 1024 * 8);
byte[] data = algorithm.ComputeHash(stream);
return ToHex(data);
#else
byte[] data = algorithm.ComputeHash(input);
return ToHex(data);
#endif
}
private static string CalculateHash(string salt, string password, HashAlgorithm hashAlgorithm)
{
byte[] data = Encoding.UTF8.GetBytes(salt + password);
byte[] hash = hashAlgorithm.ComputeHash(data);
return Convert.ToBase64String(hash);
}
public static bool ValidateChecksum(HashAlgorithm hashAlgorithm, Stream checksumFile, string filenameToCheck, Stream fileToCheck)
{
// Find the checksum...
string checksum = null;
using (var checksumFileReader = new StreamReader(checksumFile, Encoding.ASCII, false, 256, true))
{
while (checksum == null)
{
var line = checksumFileReader.ReadLine();
if (line == null)
break;
line = line.Trim();
var parts = line.Split(new[] { ' ', '\t' }, 2, StringSplitOptions.RemoveEmptyEntries);
if (parts.Length != 2)
throw new ArgumentException("Invalid format of input file");
if (parts[1] == filenameToCheck)
checksum = parts[0];
}
}
if (checksum == null)
throw new ArgumentException($"Could not find checksum for file {filenameToCheck} in checksumFile");
byte[] hash = hashAlgorithm.ComputeHash(fileToCheck);
var formattedHash = FormatHash(hash);
return formattedHash == checksum;
}
public static Tuple<byte[], string> HashFile(HashAlgorithm ha, string file)
{
using (var fs = File.OpenRead(file))
{
return new Tuple<byte[], string>(ha.ComputeHash(fs), file);
}
}
public static string HashWith(this string input, HashAlgorithm algorithm)
{
byte[] data = Encoding.UTF8.GetBytes(input);
byte[] hash = algorithm.ComputeHash(data);
return Convert.ToBase64String(hash);
}
/// <summary>
/// File content hash calculation
/// </summary>
/// <example>
/// <code>
/// // Implementation of <see cref="CalculateSha256Hash"/>
/// public static QuickIOHashResult CalculateSha256Hash( QuickIOPathInfo pathInfo )
/// {
/// using ( var fs = OpenRead( pathInfo ) )
/// using ( var hashAlgorithm = SHA256.Create( ) )
/// {
/// return CalculateHash( hashAlgorithm, fs );
/// }
/// }
/// </code>
/// </example>
/// <returns><see cref="QuickIOHashResult"/></returns>
public static QuickIOHashResult CalculateHash( HashAlgorithm hashAlgorithm, Stream stream )
{
Contract.Requires( hashAlgorithm != null );
Contract.Requires( stream != null );
return new QuickIOHashResult( hashAlgorithm.ComputeHash( stream ) );
}
private static string Hash(string str, HashAlgorithm hashAlgorithm)
{
if (string.IsNullOrEmpty(str)) return str;
byte[] s = hashAlgorithm.ComputeHash(UnicodeEncoding.UTF8.GetBytes(str));
return BitConverter.ToString(s);
}
public static string HashString(string inputString, string salt, HashAlgorithm algorithm)
{
if (inputString == null)
{
throw new ArgumentException("inputString cannot be null.");
}
if (algorithm == null)
{
throw new ArgumentException("algorithm cannot be null.");
}
if (salt == null)
{
throw new ArgumentException("saltString cannot be null.");
}
//Mix password with salt.
byte[] stringWithSalt = System.Text.Encoding.UTF8.GetBytes(inputString + salt);
//Compute hash.
byte[] hashedBytes = algorithm.ComputeHash(stringWithSalt);
// Convert hashed password bytes to string and remove "-".
string hashedString = BitConverter.ToString(hashedBytes).Replace("-", string.Empty);
// Return hashed password string in lowercase.
return hashedString.ToLower();
}
protected int StartTests(HashAlgorithm hash, byte[] input, byte[] result)
{
try {
byte[] ch = hash.ComputeHash(input, 0, input.Length);
if (!ArrayEquals(ch, result))
AddError("HB-ST1");
} catch {
AddError("HB-ST2");
}
try {
// feed input byte-by-byte
for(int i = 0; i < input.Length - 1; i++) {
hash.TransformBlock(input, i, 1, input, i);
}
if (input.Length > 0)
hash.TransformFinalBlock(input, input.Length - 1, 1);
else
hash.TransformFinalBlock(input, 0, 0);
if (!ArrayEquals(hash.Hash, result)) {
AddError("HB-ST3");
Console.WriteLine(Encoding.ASCII.GetString(input));
}
} catch {
AddError("HB-ST4");
} finally {
hash.Initialize();
}
return 4;
}
private static string CreateHash(
HashAlgorithm algo,
byte[] value)
{
return HexDigest(
algo.ComputeHash(value));
}
public static string computeHash(string password, HashAlgorithm algorithm)
{
Byte[] inputBytes = Encoding.UTF8.GetBytes(password);
Byte[] hashedBytes = algorithm.ComputeHash(inputBytes);
return BitConverter.ToString(hashedBytes);
}
internal void CalculateHa1(string realm, HashAlgorithm hashAlgorithm)
{
Ha1 =
Helpers.HexEncode(
hashAlgorithm.ComputeHash(Encoding.UTF8.GetBytes(string.Format("{0}:{1}:{2}", Username, realm, _password))));
_password = null;
}
private static String GetHashFile(String filename, HashAlgorithm hash)
{
FileStream fs = null;
try
{
fs = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read);
Int64 currentPos = fs.Position;
fs.Seek(0, SeekOrigin.Begin);
StringBuilder sb = new StringBuilder();
foreach (Byte b in hash.ComputeHash(fs))
{
sb.Append(b.ToString("X2"));
}
fs.Close();
return sb.ToString();
}
catch (Exception ex)
{
if (fs != null)
{
fs.Close();
}
string error = ex.Message;
return "";
}
}
public static string GetHashFromFile(string fileName, HashAlgorithm algorithm)
{
using (var stream = new BufferedStream(File.OpenRead(fileName), 100000))
{
return BitConverter.ToString(algorithm.ComputeHash(stream)).Replace("-", string.Empty);
}
}
/// <summary>
/// Generates a hash for the given plain text value and returns a
/// base64-encoded result.
/// </summary>
/// <param name="text">Plaintext value to be hashed. The function does not check whether this parameter is null.</param>
/// <param name="hashAlgorithm">Hash algorithm to be used.</param>
/// <returns>Hash value formatted as a base64-encoded string.</returns>
/// <exception cref="System.InvalidOperationException"></exception>
/// <exception cref="System.ArgumentNullException"></exception>
/// <exception cref="System.Text.EncoderFallbackException"></exception>
/// <exception cref="System.ObjectDisposedException"></exception>
/// <exception cref="System.ArgumentException"></exception>
public static string ComputeHash(string text, HashAlgorithm hashAlgorithm)
{
Refresh();
if (hashAlgorithm == null)
throw new ArgumentNullException("hashAlgorithm");
return Convert.ToBase64String(hashAlgorithm.ComputeHash(Encoding.UTF8.GetBytes(text)));
}
public static string ToBase64Hash(this string inputString, Encoding encoding, HashAlgorithm algo)
{
var inputBuffer = encoding.GetBytes(inputString);
var outputBuffer = algo.ComputeHash(inputBuffer, 0, inputBuffer.Length);
return Convert.ToBase64String(outputBuffer);
}
public static string GetHashString(string filePath)
{
FileInfo file = new FileInfo(filePath);
if (!file.Exists)
{
return("");
}
byte[] bytes1 = System.Text.Encoding.ASCII.GetBytes("blob " + file.Length.ToString() + '\0'.ToString());
byte[] bytes2 = File.ReadAllBytes(file.FullName);
List <byte> temp = new List <byte>();
temp.AddRange(bytes1);
temp.AddRange(bytes2);
byte[] bytes = temp.ToArray();
System.Security.Cryptography.HashAlgorithm algorithm = System.Security.Cryptography.SHA1.Create();
System.Text.StringBuilder sb = new System.Text.StringBuilder();
foreach (byte b in algorithm.ComputeHash(bytes))
{
sb.Append(b.ToString("X2"));
}
return(sb.ToString().ToLower());
}
/// <summary>
/// Encodes the hash. The resulting string is a simple 2-char hex encoded string.
/// If you like base64 just use Convert.ToBase64String(); instead of ByteArrayToString();
/// </summary>
/// <param name="message">The message to encode.</param>
/// <param name="algorithm">The Hashing algorithm.</param>
/// <returns>Hex encoded hash value.</returns>
private static string EncodeHash(string message, HashAlgorithm algorithm)
{
string saltedMessage = string.Format(CultureInfo.CurrentCulture, "ChocolateSaltyBalls{0}AreSoSalty!", message);
byte[] saltedBytes = new UTF8Encoding().GetBytes(saltedMessage);
return BitConverter.ToString(algorithm.ComputeHash(saltedBytes)).Replace("-", string.Empty);
}
private static string GetFileHash(HashAlgorithm algorithm, string fileName)
{
var stream = File.OpenRead(fileName);
var hashResult = algorithm.ComputeHash(stream);
stream.Close();
return BitConverter.ToString(hashResult).Replace("-", "");
}
private static int ComputeTotp(HashAlgorithm hashAlgorithm, ulong timestepNumber, string modifier)
{
byte[] bytes = BitConverter.GetBytes(IPAddress.HostToNetworkOrder((long)timestepNumber));
byte[] buffer2 = hashAlgorithm.ComputeHash(ApplyModifier(bytes, modifier));
int index = buffer2[buffer2.Length - 1] & 15;
int num2 = ((((buffer2[index] & 127) << 24) | ((buffer2[index + 1] & 255) << 16)) | ((buffer2[index + 2] & 255) << 8)) | (buffer2[index + 3] & 255);
return (num2 % 1000000);
}
public void ComputeHash(HashAlgorithm hasher)
{
var hashBytes = hasher.ComputeHash(FilePath, progress: this);
if (hashBytes == null)
Result = "Canceled";
else
Result = String.Concat(hashBytes.Select(b => b.ToString("X2")));
}
public string ComputeHash(string input, HashAlgorithm algorithm)
{
Byte[] inputBytes = Encoding.UTF8.GetBytes(input);
Byte[] hashedBytes = algorithm.ComputeHash(inputBytes);
return BitConverter.ToString(hashedBytes);
}
protected byte[] ComputeHashInternal(HashAlgorithm algorithm, byte[] bytes, int offset, int count, int? size = null)
{
var hash = algorithm.ComputeHash(bytes, offset, count);
if (size.HasValue)
Array.Resize(ref hash, size.Value);
return hash;
}
public static string FileHash(FileInfo fileInfo, HashAlgorithm hash)
{
using (FileStream file = new FileStream(fileInfo.FullName, FileMode.Open))
{
byte[] retVal = hash.ComputeHash(file);
return BitConverter.ToString(retVal).Replace("-", ""); // hex string
}
}
/// <summary>
///
/// </summary>
/// <param name="content">加密的方法</param>
/// <param name="getBytesFunc">把content转换为byte的方法</param>
/// <param name="hashAlgorithm">加密的方式</param>
/// <returns></returns>
public static byte[] Encrypt(string content, Encoding getBytesFunc, HashAlgorithm hashAlgorithm)
{
if (content == null) throw new ArgumentNullException("content");
if (getBytesFunc == null) throw new ArgumentNullException("getBytesFunc");
if (hashAlgorithm == null) throw new ArgumentNullException("hashAlgorithm");
byte[] iput = getBytesFunc.GetBytes(content);
return hashAlgorithm.ComputeHash(iput);
}
public void FIPS186_b(string testName, HashAlgorithm hash, byte[] input, byte[] result)
{
byte[] output = hash.ComputeHash (input, 0, input.Length);
Assert.AreEqual (result, output, testName + ".b.1");
Assert.AreEqual (result, hash.Hash, testName + ".b.2");
// required or next operation will still return old hash
hash.Initialize ();
}
/// <summary>
/// Универсальный метод для вычисления хеш-строки, в зависимости от алгоритма.
/// </summary>
/// <param name="input">Входная строка.</param>
/// <param name="algorithm">Алгоритм вычисления хеш-функции.</param>
/// <returns>SHA512 хеш.</returns>
public static String ComputeHash(String input, HashAlgorithm algorithm)
{
Byte[] inputBytes = Encoding.UTF8.GetBytes(input);
Byte[] hashedBytes = algorithm.ComputeHash(inputBytes);
return ConvertersHelper.ByteArrayToHex(hashedBytes);
}
public static byte[] ComputeHash(string fileName, HashAlgorithm hashAlgorithm)
{
if (hashAlgorithm == null)
throw new ArgumentNullException("hashAlgorithm");
using (var stream = File.OpenRead(fileName))
return hashAlgorithm.ComputeHash(stream);
}
/// <summary>
///
/// </summary>
/// <param name="input"></param>
/// <param name="encodeMode"></param>
/// <returns></returns>
public static byte[]? Encode(this byte[] input, EncodeType encodeMode)
{
using HashAlgorithm encoder = encodeMode switch
{
EncodeType.MD5 => MD5.Create(),
EncodeType.SHA1 => SHA1.Create(),
EncodeType.SHA256 => SHA256.Create(),
EncodeType.SHA384 => SHA384.Create(),
EncodeType.SHA512 => SHA512.Create(),
_ => throw new ArgumentOutOfRangeException(nameof(encodeMode)),
};
return(encoder?.ComputeHash(input));
}
/// <summary>
/// 获取Hash描述表
/// </summary>
/// <param name="strSource">待签名的字符串</param>
/// <param name="strHashData">Hash描述</param>
/// <returns></returns>
public bool GetHash(string strSource, ref string strHashData)
{
try
{
//从字符串中取得Hash描述
byte[] Buffer;
byte[] HashData;
System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");
Buffer = System.Text.Encoding.GetEncoding("GB2312").GetBytes(strSource);
HashData = MD5.ComputeHash(Buffer);
strHashData = Convert.ToBase64String(HashData);
return(true);
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// Generate hashed string of the string to according to hash algorithm.
/// </summary>
/// <param name="source"></param>
/// <param name="hashAlgorithm"></param>
/// <returns></returns>
public static string GenerateHashString(this string source,
HashAlgorithm hashAlgorithm = HashAlgorithm.SHA256)
{
if (string.IsNullOrEmpty(source))
{
throw new ArgumentException(nameof(source));
}
var sourceData = Encoding.UTF8.GetBytes(source);
byte[] hashedData = null;
System.Security.Cryptography.HashAlgorithm hash = null;
try
{
switch (hashAlgorithm)
{
case HashAlgorithm.SHA1:
hash = SHA1.Create();
break;
case HashAlgorithm.SHA512:
{
hash = SHA512.Create();
break;
}
case HashAlgorithm.SHA256:
default:
{
hash = SHA256.Create();
break;
}
}
hashedData = hash.ComputeHash(sourceData);
}
finally
{
hash?.Dispose();
}
var result = BitConverter.ToString(hashedData).ToLower().Replace("-", "");
return(result);
}
//获取Hash描述表
public bool GetHash(System.IO.FileStream objFile, ref string strHashData)
{
try
{
//从文件中取得Hash描述
byte[] HashData;
System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");
HashData = MD5.ComputeHash(objFile);
objFile.Close();
strHashData = Convert.ToBase64String(HashData);
return(true);
}
catch (Exception ex)
{
throw ex;
}
}
static string Hash_Internal(string p_string, System.Security.Cryptography.HashAlgorithm p_hashAlgorithm)
{
if (p_hashAlgorithm != null && !string.IsNullOrEmpty(p_string))
{
var bytes = System.Text.Encoding.UTF8.GetBytes(p_string);
var hashedInputBytes = p_hashAlgorithm.ComputeHash(bytes);
// Convert to text
// StringBuilder Capacity is 128, because 512 bits / 8 bits in byte * 2 symbols for byte
var hashedInputStringBuilder = new System.Text.StringBuilder(128);
foreach (var b in hashedInputBytes)
{
hashedInputStringBuilder.Append(b.ToString("X2"));
}
var v_hash = hashedInputStringBuilder.ToString();
return(v_hash);
}
return("");
}
/// <summary>
/// Calculates the hash of the filename using the specified HashAlgorithm and adds it to the MemoryStream
/// </summary>
/// <param name="memStream">MemoryStream containing hash bytes</param>
/// <param name="algo">HashAlgorithm to compute hash (MD5, SHA1, SHA256, etc)</param>
private void AddFilenameHash(Stream memStream, System.Security.Cryptography.HashAlgorithm algo)
{
var fileNameWithoutExtension = Path.GetFileNameWithoutExtension(FilePath);
if (fileNameWithoutExtension == null)
{
return;
}
var fileNameNoExt = Encoding.UTF8.GetBytes(fileNameWithoutExtension.ToLower());
if (fileNameNoExt.Length <= 0)
{
return;
}
var hashFileName = algo.ComputeHash(fileNameNoExt);
if (hashFileName.Length > 0)
{
memStream.Write(hashFileName, 0, hashFileName.Length);
}
}
/// <summary>
/// Calculate hash using SHA512
/// </summary>
/// <param name="includeFilename">If true, the filename is including when computing the hash</param>
/// <returns>A string representation of the computed hash</returns>
private string CalculateHash(bool includeFilename, System.Security.Cryptography.HashAlgorithm algo)
{
var hash = string.Empty;
using (var memStream = new MemoryStream())
{
if (includeFilename)
{
AddFilenameHash(memStream, algo);
}
try
{
using (var fileStream = GetFileStream())
{
if (fileStream == null)
{
return(hash);
}
var hashFile = algo.ComputeHash(fileStream);
memStream.Write(hashFile, 0, hashFile.Length);
}
}
catch (IOException ex)
{
Debug.WriteLine("The following error occurred trying to compute hash of file contents:" + ex.Message);
return(hash);
}
memStream.Seek(0, SeekOrigin.Begin);
return(CalculateHashString(algo, memStream));
}
}
public ValidationError ValidationHandler2(XmlDocument xmlDoc, string xmlFileName)
{
ValidationError validationError = new ValidationError(xmlFileName, null);
TimeStampToken token = XmlNodeHelper.GetTimeStampToken(xmlDoc);
byte[] timesStampDigestArray = token.TimeStampInfo.GetMessageImprintDigest();
string hashAlgorithmId = token.TimeStampInfo.HashAlgorithm.Algorithm.Id;
var signatureEle = xmlDoc.SelectXmlNode("//ds:Signature/ds:SignatureValue");
if (signatureEle == null)
{
return(validationError.AppendErrorMessage("Missing SignatureValue element."));
}
byte[] signatureValueByteArray = Convert.FromBase64String(signatureEle.InnerText);
var signatureMethodAlgorithm = xmlDoc.SelectXmlNode("//ds:SignedInfo/ds:SignatureMethod").AtrValue("Algorithm");
if (signatureMethodAlgorithm != "http://www.w3.org/2001/04/xmldsig-more#rsa-sha256")
{
return(validationError.AppendErrorMessage($"Unknown SignatureMethod Algorithm {signatureMethodAlgorithm}."));
}
System.Security.Cryptography.HashAlgorithm hashAlgo = System.Security.Cryptography.SHA256Managed.Create();
var conputedSignatureByteArray = hashAlgo.ComputeHash(signatureValueByteArray);
if (!StructuralComparisons.StructuralEqualityComparer.Equals(conputedSignatureByteArray, timesStampDigestArray))
{
return(validationError.AppendErrorMessage("Missing SignatureValue element."));
}
return(validationError);
}
/// <summary>
/// Calculates hash and returns it in string format
/// </summary>
/// <param name="algo">System.Security.Cryptography.HashAlgorithm to use</param>
/// <param name="stream">Stream to read from</param>
/// <returns>Hash in string format</returns>
private static IEnumerable <byte> CalculateHashBytes(System.Security.Cryptography.HashAlgorithm algo,
Stream stream)
{
return(algo.ComputeHash(stream));
}
/// <summary>
/// RSA加密解密及RSA签名和验证
/// </summary>
public class RSA
{
#region RSA 加密解密
#region RSA 的密钥产生
/// <summary>
/// RSA 的密钥产生 产生私钥 和公钥
/// </summary>
/// <param name="xmlKeys"></param>
/// <param name="xmlPublicKey"></param>
public Tuple<string,string> generateKey()
{
System.Security.Cryptography.RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
string xmlKeys = rsa.ToXmlString(true);
string xmlPublicKey = rsa.ToXmlString(false);
return Tuple.Create<string, string>(xmlKeys, xmlPublicKey);
}
#endregion
#region RSA的加密函数
//##############################################################################
//RSA 方式加密
//说明KEY必须是XML的行式,返回的是字符串
//在有一点需要说明！！该加密方式有 长度 限制的！！
//##############################################################################
//RSA的加密函数 string
public string encrypt(string xmlPublicKey, string m_strEncryptString)
{
byte[] PlainTextBArray;
byte[] CypherTextBArray;
string Result;
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
rsa.FromXmlString(xmlPublicKey);
PlainTextBArray = (new UnicodeEncoding()).GetBytes(m_strEncryptString);
CypherTextBArray = rsa.Encrypt(PlainTextBArray, false);
Result = Convert.ToBase64String(CypherTextBArray);
return Result;
}
//RSA的加密函数 byte[]
public string encrypt(string xmlPublicKey, byte[] EncryptString)
{
byte[] CypherTextBArray;
string Result;
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
rsa.FromXmlString(xmlPublicKey);
CypherTextBArray = rsa.Encrypt(EncryptString, false);
Result = Convert.ToBase64String(CypherTextBArray);
return Result;
}
#endregion
#region RSA的解密函数
//RSA的解密函数 string
public string decrypt(string xmlPrivateKey, string m_strDecryptString)
{
byte[] PlainTextBArray;
byte[] DypherTextBArray;
string Result;
System.Security.Cryptography.RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
rsa.FromXmlString(xmlPrivateKey);
PlainTextBArray = Convert.FromBase64String(m_strDecryptString);
DypherTextBArray = rsa.Decrypt(PlainTextBArray, false);
Result = (new UnicodeEncoding()).GetString(DypherTextBArray);
return Result;
}
//RSA的解密函数 byte
public string decrypt(string xmlPrivateKey, byte[] DecryptString)
{
byte[] DypherTextBArray;
string Result;
System.Security.Cryptography.RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
rsa.FromXmlString(xmlPrivateKey);
DypherTextBArray = rsa.Decrypt(DecryptString, false);
Result = (new UnicodeEncoding()).GetString(DypherTextBArray);
return Result;
}
#endregion
#endregion
#region RSA数字签名
#region 获取Hash描述表
//获取Hash描述表
public bool GetHash(string m_strSource, ref byte[] HashData)
{
//从字符串中取得Hash描述
byte[] Buffer;
System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");
Buffer = System.Text.Encoding.GetEncoding("GB2312").GetBytes(m_strSource);
HashData = MD5.ComputeHash(Buffer);
return true;
}
//获取Hash描述表
public bool GetHash(string m_strSource, ref string strHashData)
{
//从字符串中取得Hash描述
byte[] Buffer;
byte[] HashData;
System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");
Buffer = System.Text.Encoding.GetEncoding("GB2312").GetBytes(m_strSource);
HashData = MD5.ComputeHash(Buffer);
strHashData = Convert.ToBase64String(HashData);
return true;
}
//获取Hash描述表
public bool GetHash(System.IO.FileStream objFile, ref byte[] HashData)
{
//从文件中取得Hash描述
System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");
HashData = MD5.ComputeHash(objFile);
objFile.Close();
return true;
}
//获取Hash描述表
public bool GetHash(System.IO.FileStream objFile, ref string strHashData)
{
//从文件中取得Hash描述
byte[] HashData;
System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");
HashData = MD5.ComputeHash(objFile);
objFile.Close();
strHashData = Convert.ToBase64String(HashData);
return true;
}
#endregion
#region RSA签名
//RSA签名
public bool SignatureFormatter(string p_strKeyPrivate, byte[] HashbyteSignature, ref byte[] EncryptedSignatureData)
{
System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPrivate);
System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);
//设置签名的算法为MD5
RSAFormatter.SetHashAlgorithm("MD5");
//执行签名
EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);
return true;
}
//RSA签名
public bool SignatureFormatter(string p_strKeyPrivate, byte[] HashbyteSignature, ref string m_strEncryptedSignatureData)
{
byte[] EncryptedSignatureData;
System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPrivate);
System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);
//设置签名的算法为MD5
RSAFormatter.SetHashAlgorithm("MD5");
//执行签名
EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);
m_strEncryptedSignatureData = Convert.ToBase64String(EncryptedSignatureData);
return true;
}
//RSA签名
public bool SignatureFormatter(string p_strKeyPrivate, string m_strHashbyteSignature, ref byte[] EncryptedSignatureData)
{
byte[] HashbyteSignature;
HashbyteSignature = Convert.FromBase64String(m_strHashbyteSignature);
System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPrivate);
System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);
//设置签名的算法为MD5
RSAFormatter.SetHashAlgorithm("MD5");
//执行签名
EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);
return true;
}
//RSA签名
public bool SignatureFormatter(string p_strKeyPrivate, string m_strHashbyteSignature, ref string m_strEncryptedSignatureData)
{
byte[] HashbyteSignature;
byte[] EncryptedSignatureData;
HashbyteSignature = Convert.FromBase64String(m_strHashbyteSignature);
System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPrivate);
System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA);
//设置签名的算法为MD5
RSAFormatter.SetHashAlgorithm("MD5");
//执行签名
EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);
m_strEncryptedSignatureData = Convert.ToBase64String(EncryptedSignatureData);
return true;
}
#endregion
#region RSA 签名验证
public bool SignatureDeformatter(string p_strKeyPublic, byte[] HashbyteDeformatter, byte[] DeformatterData)
{
System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPublic);
System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.SetHashAlgorithm("MD5");
if (RSADeformatter.VerifySignature(HashbyteDeformatter, DeformatterData))
{
return true;
}
else
{
return false;
}
}
public bool SignatureDeformatter(string p_strKeyPublic, string p_strHashbyteDeformatter, byte[] DeformatterData)
{
byte[] HashbyteDeformatter;
HashbyteDeformatter = Convert.FromBase64String(p_strHashbyteDeformatter);
System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPublic);
System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.SetHashAlgorithm("MD5");
if (RSADeformatter.VerifySignature(HashbyteDeformatter, DeformatterData))
{
return true;
}
else
{
return false;
}
}
public bool SignatureDeformatter(string p_strKeyPublic, byte[] HashbyteDeformatter, string p_strDeformatterData)
{
byte[] DeformatterData;
System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPublic);
System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.SetHashAlgorithm("MD5");
DeformatterData = Convert.FromBase64String(p_strDeformatterData);
if (RSADeformatter.VerifySignature(HashbyteDeformatter, DeformatterData))
{
return true;
}
else
{
return false;
}
}
public bool SignatureDeformatter(string p_strKeyPublic, string p_strHashbyteDeformatter, string p_strDeformatterData)
{
byte[] DeformatterData;
byte[] HashbyteDeformatter;
HashbyteDeformatter = Convert.FromBase64String(p_strHashbyteDeformatter);
System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();
RSA.FromXmlString(p_strKeyPublic);
System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.SetHashAlgorithm("MD5");
DeformatterData = Convert.FromBase64String(p_strDeformatterData);
if (RSADeformatter.VerifySignature(HashbyteDeformatter, DeformatterData))
{
return true;
}
else
{
return false;
}
}
}
#endregion
#endregion
/// <summary>
/// Gets a <see cref="System.Collections.Generic.Dictionary{string,object}"/> representing the contents of the syndicated feed.
/// </summary>
/// <param name="feedUrl">A <see cref="System.String"/> representing the URL of the feed.</param>
/// <param name="detailPage">A <see cref="System.String"/> representing the Guid of the detail page. </param>
/// <param name="cacheDuration">A <see cref="System.Int32"/> representing the length of time that the content of the RSS feed will be saved to cache.</param>
/// <param name="message">A <see cref="System.Collections.Generic.Dictionary{string,object}"/> that will contain any error or alert messages that are returned.</param>
/// <param name="isError">A <see cref="System.Boolean"/> that is <c>true</c> if an error has occurred, otherwise <c>false</c>.</param>
/// <returns></returns>
public static Dictionary <string, object> GetFeed(string feedUrl, string detailPage, int cacheDuration, ref Dictionary <string, string> message, ref bool isError)
{
Dictionary <string, object> feedDictionary = new Dictionary <string, object>();
if (message == null)
{
message = new Dictionary <string, string>();
}
if (String.IsNullOrEmpty(feedUrl))
{
message.Add("Feed URL not provided.", "The RSS Feed URL has not been provided. Please update the \"RSS Feed URL\" attribute in the block settings.");
return(feedDictionary);
}
if (!System.Text.RegularExpressions.Regex.IsMatch(feedUrl, @"^(http://|https://|)([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?"))
{
message.Add("Feed URL not valid.", "The Feed URL is not formatted properly. Please verify the \"RSS Feed URL\" attribute in block settings.");
isError = false;
return(feedDictionary);
}
ObjectCache feedCache = MemoryCache.Default;
if (feedCache[GetFeedCacheKey(feedUrl)] != null)
{
feedDictionary = (Dictionary <string, object>)feedCache[GetFeedCacheKey(feedUrl)];
}
else
{
XDocument feed = null;
HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(feedUrl);
using (HttpWebResponse resp = (HttpWebResponse)req.GetResponse())
{
if (resp.StatusCode == HttpStatusCode.OK)
{
XmlReader feedReader = XmlReader.Create(resp.GetResponseStream());
feed = XDocument.Load(feedReader);
feedReader.Close();
}
else
{
message.Add("Error loading feed.", string.Format("An error has occurred while loading the feed. Status Code: {0} - {1}", (int)resp.StatusCode, resp.StatusDescription));
isError = true;
}
}
if (feed != null)
{
string detailPageBaseUrl = string.Empty;
int detailPageID = 0;
if (!String.IsNullOrEmpty(detailPage))
{
detailPageID = new Rock.Model.PageService(new Rock.Data.RockContext()).Get(new Guid(detailPage)).Id;
detailPageBaseUrl = new PageReference(detailPageID).BuildUrl();
}
if (detailPageID > 0)
{
detailPageBaseUrl = new PageReference(detailPageID).BuildUrl();
}
Dictionary <string, XNamespace> namespaces = feed.Root.Attributes()
.Where(a => a.IsNamespaceDeclaration)
.GroupBy(a => a.Name.Namespace == XNamespace.None ? String.Empty : a.Name.LocalName,
a => XNamespace.Get(a.Value))
.ToDictionary(g => g.Key, g => g.First());
feedDictionary = BuildElementDictionary(feed.Elements().First(), namespaces);
if (feedDictionary.Count == 1 && feedDictionary.First().Value.GetType() == typeof(Dictionary <string, object>))
{
feedDictionary = (Dictionary <string, object>)feedDictionary.First().Value;
}
if (feedDictionary.ContainsKey("lastBuildDate"))
{
feedDictionary["lastBuildDate"] = DateTimeOffset.Parse(feedDictionary["lastBuildDate"].ToString()).LocalDateTime;
}
if (feedDictionary.ContainsKey("updated"))
{
feedDictionary["updated"] = DateTimeOffset.Parse(feedDictionary["updated"].ToString()).LocalDateTime;
}
if (feedDictionary.ContainsKey("item") || feedDictionary.ContainsKey("entry"))
{
List <Dictionary <string, object> > articles = (List <Dictionary <string, object> >)feedDictionary.Where(x => x.Key == "item" || x.Key == "entry").FirstOrDefault().Value;
foreach (var article in articles)
{
string idEntry = String.Empty;
string idEntryHashed = string.Empty;
if (article.ContainsKey("id"))
{
idEntry = article["id"].ToString();
}
if (article.ContainsKey("guid"))
{
if (article["guid"].GetType() == typeof(Dictionary <string, object>))
{
idEntry = ((Dictionary <string, object>)article["guid"])["value"].ToString();
}
else
{
idEntry = article["guid"].ToString();
}
}
if (!String.IsNullOrWhiteSpace(idEntry))
{
System.Security.Cryptography.HashAlgorithm hashAlgorithm = System.Security.Cryptography.SHA1.Create();
System.Text.StringBuilder sb = new System.Text.StringBuilder();
foreach (byte b in hashAlgorithm.ComputeHash(System.Text.Encoding.UTF8.GetBytes(idEntry)))
{
sb.Append(b.ToString("X2"));
}
idEntryHashed = sb.ToString();
Dictionary <string, string> queryString = new Dictionary <string, string>();
queryString.Add("feedItemId", idEntryHashed);
if (detailPageID > 0)
{
article.Add("detailPageUrl", new PageReference(detailPageID, 0, queryString).BuildUrl());
}
article.Add("articleHash", idEntryHashed);
}
if (article.ContainsKey("pubDate"))
{
article["pubDate"] = DateTimeOffset.Parse(article["pubDate"].ToString()).LocalDateTime;
}
if (article.ContainsKey("updated"))
{
article["updated"] = DateTimeOffset.Parse(article["updated"].ToString()).LocalDateTime;
}
}
}
if (!String.IsNullOrEmpty(detailPageBaseUrl))
{
feedDictionary.Add("DetailPageBaseUrl", detailPageBaseUrl);
}
}
if (feedDictionary != null)
{
feedCache.Set(GetFeedCacheKey(feedUrl), feedDictionary, DateTimeOffset.Now.AddMinutes(cacheDuration));
}
}
return(feedDictionary);
}
public static byte[] GetMd5Byte(string inputString)
{
System.Security.Cryptography.HashAlgorithm algorithm = MD5.Create(); //or use SHA1.Create();
return(algorithm.ComputeHash(Encoding.UTF8.GetBytes(inputString)));
}
public static string ComputeHashString(this HashAlgorithm hash, byte[] buffer)
{
return(hash.ComputeHash(buffer).ConverterToHexString());
}
public static string ComputeHashString(this HashAlgorithm hash, string text)
{
return(hash.ComputeHash(text.GetBytes()).ConverterToHexString());
}
public static string ComputeHashString(this HashAlgorithm hash, byte[] buffer, int offset, int count)
{
return(hash.ComputeHash(buffer, offset, count).ConverterToHexString());
}
public static string ComputeHashString(this HashAlgorithm hash, Stream inputStream)
{
return(hash.ComputeHash(inputStream).ConverterToHexString());
}
/// <summary>Process a block of data.</summary>
/// <param name="inputBuffer">The block of data to process.</param>
/// <param name="inputOffset">Where to start in the block.</param>
override protected void ProcessBlock(byte[] inputBuffer, int inputOffset)
{
lock (syncLock) {
workingNodes.Add(new HashNode(hashAlgorithm.ComputeHash(inputBuffer, inputOffset, BlockSize), Count, (Count + BlockSize - 1)));
}
}
/// <summary>
/// 计算指定 <see cref="Stream"/> 对象的哈希值。
/// </summary>
/// <param name="hashAlgorithm">要计算的哈希算法</param>
/// <param name="inputStream">要计算其哈希代码的输入</param>
/// <param name="streamReadAction">没次读流时调用，例如用来获取进度</param>
/// <returns>计算所得的哈希代码</returns>
public static byte[] ComputeHash(this HashAlgorithm hashAlgorithm, Stream inputStream, Action streamReadAction)
{
using (var readStream = new ReadStream(inputStream, streamReadAction))
return(hashAlgorithm.ComputeHash(readStream));
}
#pragma warning disable 809
public override byte[] GetBytes(int cb)
{
#pragma warning restore 809
if (cb < 1)
{
throw new IndexOutOfRangeException("cb");
}
if (state == 0)
{
// it's now impossible to change the HashName, Salt
// and IterationCount
Reset();
state = 1;
}
byte[] result = new byte [cb];
int cpos = 0;
// the initial hash (in reset) + at least one iteration
int iter = Math.Max(1, IterationsValue - 1);
// start with the PKCS5 key
if (output == null)
{
// calculate the PKCS5 key
output = initial;
// generate new key material
for (int i = 0; i < iter - 1; i++)
{
output = hash.ComputeHash(output);
}
}
while (cpos < cb)
{
byte[] output2 = null;
if (hashnumber == 0)
{
// last iteration on output
output2 = hash.ComputeHash(output);
}
else if (hashnumber < 1000)
{
string n = Convert.ToString(hashnumber);
output2 = new byte [output.Length + n.Length];
for (int j = 0; j < n.Length; j++)
{
output2 [j] = (byte)(n [j]);
}
Buffer.BlockCopy(output, 0, output2, n.Length, output.Length);
// don't update output
output2 = hash.ComputeHash(output2);
}
else
{
throw new CryptographicException(
Locale.GetText("too long"));
}
int rem = output2.Length - position;
int l = Math.Min(cb - cpos, rem);
Buffer.BlockCopy(output2, position, result, cpos, l);
cpos += l;
position += l;
while (position >= output2.Length)
{
position -= output2.Length;
hashnumber++;
}
}
return(result);
}
private static string ComputeHash(string input, System.Security.Cryptography.HashAlgorithm algorithm)
{
byte[] bytes = System.Text.Encoding.UTF8.GetBytes(input);
byte[] value = algorithm.ComputeHash(bytes);
return(System.BitConverter.ToString(value));
}
static public byte[] SHA1(byte[] message)
{
HashAlgorithm ha = new System.Security.Cryptography.HashAlgorithm(HashAlgorithmType.SHA1);
return(ha.ComputeHash(message));
}
public static byte[] Hash(byte[] input, HashAlgorithm algorithm)
{
System.Security.Cryptography.HashAlgorithm hasher = GetAlgorithm(algorithm);
byte[] hashByte = hasher.ComputeHash(input);
return(hashByte);
}
/// <summary>
/// Calculates hash and returns as byte array
/// </summary>
/// <param name="algo">System.Security.Cryptography.HashAlgorithm to use</param>
/// <param name="bytes">Bytes to generate hash from</param>
/// <returns>Hash in byte array</returns>
private static byte[] CalculateHashBytes(System.Security.Cryptography.HashAlgorithm algo, byte[] bytes)
{
return(algo.ComputeHash(bytes));
}