本文整理汇总了C#中System.Security.Cryptography.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System.Security.Cryptography命名空间，在下文中一共展示了CryptoStream类的2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: Main
//引入命名空间
using System;
using System.IO;
using System.Security.Cryptography;
namespace RijndaelManaged_Example
{
class RijndaelExample
{
public static void Main()
{
try
{
string original = "Here is some data to encrypt!";
// Create a new instance of the Rijndael
// class. This generates a new key and initialization
// vector (IV).
using (Rijndael myRijndael = Rijndael.Create())
{
// Encrypt the string to an array of bytes.
byte[] encrypted = EncryptStringToBytes(original, myRijndael.Key, myRijndael.IV);
// Decrypt the bytes to a string.
string roundtrip = DecryptStringFromBytes(encrypted, myRijndael.Key, myRijndael.IV);
//Display the original data and the decrypted data.
Console.WriteLine("Original: {0}", original);
Console.WriteLine("Round Trip: {0}", roundtrip);
}
}
catch (Exception e)
{
Console.WriteLine("Error: {0}", e.Message);
}
}
static byte[] EncryptStringToBytes(string plainText, byte[] Key, byte[] IV)
{
// Check arguments.
if (plainText == null || plainText.Length <= 0)
throw new ArgumentNullException("plainText");
if (Key == null || Key.Length <= 0)
throw new ArgumentNullException("Key");
if (IV == null || IV.Length <= 0)
throw new ArgumentNullException("IV");
byte[] encrypted;
// Create an Rijndael object
// with the specified key and IV.
using (Rijndael rijAlg = Rijndael.Create())
{
rijAlg.Key = Key;
rijAlg.IV = IV;
// Create an encryptor to perform the stream transform.
ICryptoTransform encryptor = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV);
// Create the streams used for encryption.
using (MemoryStream msEncrypt = new MemoryStream())
{
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
{
//Write all data to the stream.
swEncrypt.Write(plainText);
}
encrypted = msEncrypt.ToArray();
}
}
}
// Return the encrypted bytes from the memory stream.
return encrypted;
}
static string DecryptStringFromBytes(byte[] cipherText, byte[] Key, byte[] IV)
{
// Check arguments.
if (cipherText == null || cipherText.Length <= 0)
throw new ArgumentNullException("cipherText");
if (Key == null || Key.Length <= 0)
throw new ArgumentNullException("Key");
if (IV == null || IV.Length <= 0)
throw new ArgumentNullException("IV");
// Declare the string used to hold
// the decrypted text.
string plaintext = null;
// Create an Rijndael object
// with the specified key and IV.
using (Rijndael rijAlg = Rijndael.Create())
{
rijAlg.Key = Key;
rijAlg.IV = IV;
// Create a decryptor to perform the stream transform.
ICryptoTransform decryptor = rijAlg.CreateDecryptor(rijAlg.Key, rijAlg.IV);
// Create the streams used for decryption.
using (MemoryStream msDecrypt = new MemoryStream(cipherText))
{
using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader srDecrypt = new StreamReader(csDecrypt))
{
// Read the decrypted bytes from the decrypting stream
// and place them in a string.
plaintext = srDecrypt.ReadToEnd();
}
}
}
}
return plaintext;
}
}
}示例2: new CryptoStream
/*
C# Network Programming
by Richard Blum
Publisher: Sybex
ISBN: 0782141765
*/
using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Soap;
using System.Security;
using System.Security.Cryptography;
using System.Text;
public class CryptoDataSender
{
private void SendData(NetworkStream strm, SerialEmployee emp)
{
IFormatter formatter = new SoapFormatter();
MemoryStream memstrm = new MemoryStream();
byte[] Key = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16};
byte[] IV = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16};
TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
CryptoStream csw = new CryptoStream(memstrm, tdes.CreateEncryptor(Key, IV), CryptoStreamMode.Write);
formatter.Serialize(csw, emp);
csw.FlushFinalBlock();
byte[] data = memstrm.GetBuffer();
int memsize = (int)memstrm.Length;
byte[] size = BitConverter.GetBytes(memsize);
strm.Write(size, 0, 4);
strm.Write(data, 0, (int)memsize);
strm.Flush();
csw.Close();
memstrm.Close();
}
public CryptoDataSender()
{
SerialEmployee emp1 = new SerialEmployee();
SerialEmployee emp2 = new SerialEmployee();
emp1.EmployeeID = 1;
emp1.LastName = "Blum";
emp1.FirstName = "Katie Jane";
emp1.YearsService = 12;
emp1.Salary = 35000.50;
emp2.EmployeeID = 2;
emp2.LastName = "Blum";
emp2.FirstName = "Jessica";
emp2.YearsService = 9;
emp2.Salary = 23700.30;
TcpClient client = new TcpClient("127.0.0.1", 9050);
NetworkStream strm = client.GetStream();
SendData(strm, emp1);
SendData(strm, emp2);
strm.Close();
client.Close();
}
public static void Main()
{
CryptoDataSender cds = new CryptoDataSender();
}
}
[Serializable]
public class SerialEmployee
{
public int EmployeeID;
public string LastName;
public string FirstName;
public int YearsService;
public double Salary;
public SerialEmployee()
{
EmployeeID = 0;
LastName = null;
FirstName = null;
YearsService = 0;
Salary = 0.0;
}
}