本文整理汇总了C#中CryptoStream类的典型用法代码示例。如果您正苦于以下问题：C# CryptoStream类的具体用法？C# CryptoStream怎么用？C# CryptoStream使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
CryptoStream类属于命名空间，在下文中一共展示了CryptoStream类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: TestKnownEnc
static Boolean TestKnownEnc(Aes aes, Byte[] Key, Byte[] IV, Byte[] Plain, Byte[] Cipher)
{
Byte[] CipherCalculated;
Console.WriteLine("Encrypting the following bytes:");
PrintByteArray(Plain);
Console.WriteLine("With the following Key:");
PrintByteArray(Key);
Console.WriteLine("and IV:");
PrintByteArray(IV);
Console.WriteLine("Expecting this ciphertext:");
PrintByteArray(Cipher);
ICryptoTransform sse = aes.CreateEncryptor(Key, IV);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, sse, CryptoStreamMode.Write);
cs.Write(Plain,0,Plain.Length);
cs.FlushFinalBlock();
CipherCalculated = ms.ToArray();
cs.Close();
Console.WriteLine("Computed this cyphertext:");
PrintByteArray(CipherCalculated);
if (!Compare(Cipher, CipherCalculated)) {
Console.WriteLine("ERROR: result is different from the expected");
return false;
}
Console.WriteLine("OK");
return true;
}示例2: Decode
/// <summary>
/// 对数据进行解密
/// </summary>
/// <param name="decryptstring">需要解密的数据</param>
/// <returns></returns>
public static string Decode(string data)
{
byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);
byte[] byEnc;
try
{
byEnc = Convert.FromBase64String(data);
}
catch
{
return null;
}
try
{
DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
MemoryStream ms = new MemoryStream(byEnc);
CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cst);
return sr.ReadToEnd();
}
catch
{
return null;
}
}示例3: Decrypt
//cmThe function used to decrypt the text
private static string Decrypt(string strText, string SaltKey)
{
byte[] byKey = { };
byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xab, 0xcd, 0xef };
byte[] inputByteArray = new byte[strText.Length + 1];
try
{
byKey = System.Text.Encoding.UTF8.GetBytes(SaltKey.Substring(0, 8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
inputByteArray = Convert.FromBase64String(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
System.Text.Encoding encoding = System.Text.Encoding.UTF8;
return encoding.GetString(ms.ToArray());
}
catch (Exception ex)
{
return ex.Message;
}
}示例4: DeCryption
private string DeCryption(string content, string sKey, string sIV)
{
try
{
byte[] inputByteArray = Convert.FromBase64String(content);
using (DESCryptoServiceProvider desProvider = new DESCryptoServiceProvider())
{
//byte[] inputByteArray = Convert.FromBase64String(content);
desProvider.Key = System.Text.Encoding.ASCII.GetBytes(sKey);
desProvider.IV = System.Text.Encoding.ASCII.GetBytes(sIV);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
using (CryptoStream cs = new CryptoStream(ms,desProvider.CreateDecryptor(), CryptoStreamMode.Write))
{
//cs.Clear();
cs.Write(inputByteArray,0,inputByteArray.Length);
cs.FlushFinalBlock();
cs.Close();
}
string str = System.Text.Encoding.UTF8.GetString(ms.ToArray());
ms.Close();
return str;
}
}
catch
{
return "String Not Base64 Encode!!!";
}
}示例5: Main
static int Main ()
{
string filename = Path.Combine (AppDomain.CurrentDomain.BaseDirectory,
"encrypt.tmp");
string data = "this is sensitive data";
DESCryptoServiceProvider des = new DESCryptoServiceProvider ();
des.GenerateIV ();
des.GenerateKey ();
// ----------- WRITING ENCRYPTED SERIALIZED DATA ------------------
Stream stream = new FileStream (filename, FileMode.Create, FileAccess.Write);
stream = new CryptoStream (stream, des.CreateEncryptor (), CryptoStreamMode.Write);
BinaryFormatter bformatter = new BinaryFormatter ();
bformatter.Serialize (stream, data);
stream.Close ();
stream = null;
bformatter = null;
data = string.Empty;
// ----------- READING ENCRYPTED SERIALIZED DATA ------------------
stream = new FileStream (filename, FileMode.Open, FileAccess.Read);
stream = new CryptoStream (stream, des.CreateDecryptor (), CryptoStreamMode.Read);
bformatter = new BinaryFormatter ();
data = (string) bformatter.Deserialize (stream);
stream.Close ();
//----------- CHECK RESULTS ----------------
if (data != "this is sensitive data")
return 1;
return 0;
}示例6: Decrypt
public static string Decrypt(byte[] key, byte[] iv, byte[] input)
{
if (key == null || iv == null || input == null)
{
return null;
}
// Create a memory stream to the passed buffer.
MemoryStream ms = new MemoryStream(input);
// Create a CryptoStream using the memory stream and the
// CSP DES key.
CryptoStream encStream = new CryptoStream(ms, m_desKey.CreateDecryptor(key, iv), CryptoStreamMode.Read);
// Create a StreamReader for reading the stream.
StreamReader sr = new StreamReader(encStream);
// Read the stream as a string.
string val = sr.ReadToEnd();
// Close the streams.
sr.Close();
encStream.Close();
ms.Close();
return val;
}示例7: DecryptFile
/// <summary>
/// 对文件内容进行DES解密
/// </summary>
/// <param name="sourceFile">待解密的文件绝对路径</param>
/// <param name="destFile">解密后的文件保存的绝对路径</param>
public static void DecryptFile(string sourceFile, string destFile)
{
if (!File.Exists(sourceFile)) throw new FileNotFoundException("指定的文件路径不存在！", sourceFile);
byte[] btKey = Encoding.Default.GetBytes(key);
byte[] btIV = Encoding.Default.GetBytes(iv);
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] btFile = File.ReadAllBytes(sourceFile);
using (FileStream fs = new FileStream(destFile, FileMode.Create, FileAccess.Write))
{
try
{
using (CryptoStream cs = new CryptoStream(fs, des.CreateDecryptor(btKey, btIV), CryptoStreamMode.Write))
{
cs.Write(btFile, 0, btFile.Length);
cs.FlushFinalBlock();
}
}
catch
{
throw;
}
finally
{
fs.Close();
}
}
}示例8: Test
public static Boolean Test() {
String Text = "This is some test text";
Console.WriteLine("Original text : " + Text);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, new ToBase64Transform(), CryptoStreamMode.Write);
cs.Write(Encoding.ASCII.GetBytes(Text), 0, Text.Length);
cs.Close();
Console.WriteLine("Encoded : " + Encoding.ASCII.GetString(ms.ToArray()));
MemoryStream ms1 = new MemoryStream();
CryptoStream cs1 = new CryptoStream(ms1, new FromBase64Transform(), CryptoStreamMode.Write);
cs1.Write(ms.ToArray(), 0, (int)ms.ToArray().Length);
cs1.Close();
Console.WriteLine("Decoded : " + Encoding.ASCII.GetString(ms1.ToArray()));
String mod = Encoding.ASCII.GetString((Byte[])ms.ToArray().Clone());
mod = mod.Insert(17, "\n").Insert(4, " ").Insert(8,"\t");
Byte[] modified = Encoding.ASCII.GetBytes(mod);
MemoryStream ms2 = new MemoryStream();
CryptoStream cs2 = new CryptoStream(ms2, new FromBase64Transform(), CryptoStreamMode.Write);
cs2.Write(modified, 0, (int)modified.Length);
cs2.Close();
Console.WriteLine("Decoded (with whitespaces) : " + Encoding.ASCII.GetString(ms2.ToArray()));
if (!Compare(ms1.ToArray(), ms2.ToArray())) return false;
return true;
}示例9: Encrypt
/// <summary>
/// Encrypt string using AES 128
/// </summary>
/// <param name="plaintext"></param>
/// <param name="key"></param>
/// <returns></returns>
public static string Encrypt(string plaintext, string key)
{
byte[] keybytes = Encoding.UTF8.GetBytes(key);
RijndaelManaged aes = new RijndaelManaged();
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.None;
byte[] IVbytes = Encoding.ASCII.GetBytes("dongbinhuiasxiny");
ICryptoTransform encryptor = aes.CreateEncryptor(keybytes, IVbytes);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
CryptoStream cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write);
byte[] plainBytes = Encoding.UTF8.GetBytes(Convert.ToBase64String(Encoding.UTF8.GetBytes(plaintext)));
cs.Write(plainBytes, 0, plainBytes.Length);
cs.FlushFinalBlock();
byte[] cipherBytes = ms.ToArray();
ms.Close();
cs.Close();
return Convert.ToBase64String(cipherBytes, 0, cipherBytes.Length);
}示例10: Encrypt
public static string Encrypt(this string text, string lKey)
{
try
{
using (Aes aes = new AesManaged())
{
Rfc2898DeriveBytes deriveBytes = new Rfc2898DeriveBytes(Encoding.UTF8.GetString(IVa, 0, IVa.Length), Encoding.UTF8.GetBytes(lKey));
aes.Key = deriveBytes.GetBytes(128 / 8);
aes.IV = aes.Key;
using (MemoryStream encryptionStream = new MemoryStream())
{
using (CryptoStream encrypt = new CryptoStream(encryptionStream, aes.CreateEncryptor(), CryptoStreamMode.Write))
{
byte[] cleanText = Encoding.UTF8.GetBytes(text);
encrypt.Write(cleanText, 0, cleanText.Length);
encrypt.FlushFinalBlock();
}
byte[] encryptedData = encryptionStream.ToArray();
string encryptedText = Convert.ToBase64String(encryptedData);
return encryptedText;
}
}
}
catch
{
return String.Empty;
}
}示例11: Decrypt
public static string Decrypt(this string text, string lKey)
{
try
{
using (Aes aes = new AesManaged())
{
Rfc2898DeriveBytes deriveBytes = new Rfc2898DeriveBytes(Encoding.UTF8.GetString(IVa, 0, IVa.Length), Encoding.UTF8.GetBytes(lKey));
aes.Key = deriveBytes.GetBytes(128 / 8);
aes.IV = aes.Key;
using (MemoryStream decryptionStream = new MemoryStream())
{
using (CryptoStream decrypt = new CryptoStream(decryptionStream, aes.CreateDecryptor(), CryptoStreamMode.Write))
{
byte[] encryptedData = Convert.FromBase64String(text);
decrypt.Write(encryptedData, 0, encryptedData.Length);
decrypt.Flush();
}
byte[] decryptedData = decryptionStream.ToArray();
string decryptedText = Encoding.UTF8.GetString(decryptedData, 0, decryptedData.Length);
return decryptedText;
}
}
}
catch
{
return String.Empty;
}
}示例12: Decrypt
/// <summary>
/// Return stream to read encrypted file.
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public static CryptoStream Decrypt(string path)
{
FileStream encryptReader = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Delete);
var returnStream = new CryptoStream(encryptReader, RMCrypto.CreateDecryptor(Key, IV), CryptoStreamMode.Read);
Debug.Log("Return encrypt stream");
return returnStream;
}示例13: Encrypt
/// <summary>
/// Return stream to write file in encrypted way.
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public static CryptoStream Encrypt(string path)
{
FileStream encryptWriter = new FileStream(path, FileMode.Append,FileAccess.Write,FileShare.Delete);
var returnStream = new CryptoStream(encryptWriter, RMCrypto.CreateEncryptor(Key, IV), CryptoStreamMode.Write);
Debug.Log("Return encrypt stream");
return returnStream;
}示例14: Encrypt
//This method is to encrypt the password given by user.
public static string Encrypt(string data, string password)
{
if (String.IsNullOrEmpty(data))
throw new ArgumentException("No data given");
if (String.IsNullOrEmpty(password))
throw new ArgumentException("No password given");
// setup the encryption algorithm
Rfc2898DeriveBytes keyGenerator = new Rfc2898DeriveBytes(password, 8);
TripleDES tdes = TripleDES.Create();
//Rijndael aes = Rijndael.Create();
tdes.IV = keyGenerator.GetBytes(tdes.BlockSize / 8);
tdes.Key = keyGenerator.GetBytes(tdes.KeySize / 8);
// encrypt the data
byte[] rawData = Encoding.Unicode.GetBytes(data);
using (MemoryStream memoryStream = new MemoryStream())
using (CryptoStream cryptoStream = new CryptoStream(memoryStream, tdes.CreateEncryptor(), CryptoStreamMode.Write))
{
memoryStream.Write(keyGenerator.Salt, 0, keyGenerator.Salt.Length);
cryptoStream.Write(rawData, 0, rawData.Length);
cryptoStream.Close();
byte[] encrypted = memoryStream.ToArray();
return Convert.ToBase64String(encrypted);
}
}开发者ID:progressiveinfotech，项目名称:PRO_FY13_40_Helpdesk-Support-and-Customization_TerexBest，代码行数:29，代码来源:Activate.aspx.cs
示例15: EncryptData
private static void EncryptData(String inName, String outName, byte[] desKey, byte[] desIV)
{
//Create the file streams to handle the input and output files.
FileStream fin = new FileStream(inName, FileMode.Open, FileAccess.Read);
FileStream fout = new FileStream(outName, FileMode.OpenOrCreate, FileAccess.Write);
fout.SetLength(0);
//Create variables to help with read and write.
byte[] bin = new byte[100]; //This is intermediate storage for the encryption.
long rdlen = 0; //This is the total number of bytes written.
long totlen = fin.Length; //This is the total length of the input file.
int len; //This is the number of bytes to be written at a time.
SymmetricAlgorithm des = new DESCryptoServiceProvider();
des.Padding = PaddingMode.PKCS7;
CryptoStream encStream = new CryptoStream(fout, des.CreateEncryptor(desKey, desIV), CryptoStreamMode.Write);
Console.WriteLine("Encrypting...");
//Read from the input file, then encrypt and write to the output file.
while(rdlen < totlen)
{
len = fin.Read(bin, 0, 100);
encStream.Write(bin, 0, len);
rdlen = rdlen + len;
Console.WriteLine("{0} bytes processed", rdlen);
}
encStream.Close();
}