C#加密解密(AES)
2024-09-01 00:05:03
using System; namespace Encrypt
{
public class AESHelper
{
/// <summary>
/// 默认密钥-密钥的长度必须是32
/// </summary>
private const string PublicKey = "1234567890123456"; /// <summary>
/// 默认向量
/// </summary>
private const string Iv = "abcdefghijklmnop";
/// <summary>
/// AES加密
/// </summary>
/// <param name="str">需要加密字符串</param>
/// <returns>加密后字符串</returns>
public static String Encrypt(string str)
{
return Encrypt(str, PublicKey);
} /// <summary>
/// AES解密
/// </summary>
/// <param name="str">需要解密字符串</param>
/// <returns>解密后字符串</returns>
public static String Decrypt(string str)
{
return Decrypt(str, PublicKey);
}
/// <summary>
/// AES加密
/// </summary>
/// <param name="str">需要加密的字符串</param>
/// <param name="key">32位密钥</param>
/// <returns>加密后的字符串</returns>
public static string Encrypt(string str, string key)
{
Byte[] keyArray = System.Text.Encoding.UTF8.GetBytes(key);
Byte[] toEncryptArray = System.Text.Encoding.UTF8.GetBytes(str);
var rijndael = new System.Security.Cryptography.RijndaelManaged();
rijndael.Key = keyArray;
rijndael.Mode = System.Security.Cryptography.CipherMode.ECB;
rijndael.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
rijndael.IV = System.Text.Encoding.UTF8.GetBytes(Iv);
System.Security.Cryptography.ICryptoTransform cTransform = rijndael.CreateEncryptor();
Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
return Convert.ToBase64String(resultArray, 0, resultArray.Length);
}
/// <summary>
/// AES解密
/// </summary>
/// <param name="str">需要解密的字符串</param>
/// <param name="key">32位密钥</param>
/// <returns>解密后的字符串</returns>
public static string Decrypt(string str, string key)
{
Byte[] keyArray = System.Text.Encoding.UTF8.GetBytes(key);
Byte[] toEncryptArray = Convert.FromBase64String(str);
var rijndael = new System.Security.Cryptography.RijndaelManaged();
rijndael.Key = keyArray;
rijndael.Mode = System.Security.Cryptography.CipherMode.ECB;
rijndael.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
rijndael.IV = System.Text.Encoding.UTF8.GetBytes(Iv);
System.Security.Cryptography.ICryptoTransform cTransform = rijndael.CreateDecryptor();
Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
return System.Text.Encoding.UTF8.GetString(resultArray);
}
}
}
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