.net如何加密

在.NET中，有多种方式可以对数据进行加密。以下是一些常见的加密方法和示例：

1. AES (高级加密标准)

AES是一种广泛使用的对称加密算法。

```csharp

using System;

using System.IO;

using System.Security.Cryptography;

using System.Text;

public 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 Aes object with the specified key and IV.

using (Aes aesAlg = Aes.Create())

{

aesAlg.Key = Key;

aesAlg.IV = IV;

// Create an encryptor to perform the stream transform.

ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.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);