1.无向量 128位
/// <summary>
/// AES加密(无向量)
/// </summary>
/// <param name="plainBytes">被加密的明文</param>
/// <param name="key">密钥</param>
/// <returns>密文</returns>
public static string AESEncrypt(String Data, String Key)
{
MemoryStream mStream = new MemoryStream();
RijndaelManaged aes = new RijndaelManaged(); byte[] plainBytes = Encoding.UTF8.GetBytes(Data);
Byte[] bKey = new Byte[];
Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length); aes.Mode = CipherMode.ECB;
aes.Padding = PaddingMode.PKCS7;
aes.KeySize = ;
//aes.Key = _key;
aes.Key = bKey;
//aes.IV = _iV;
CryptoStream cryptoStream = new CryptoStream(mStream, aes.CreateEncryptor(), CryptoStreamMode.Write);
try
{
cryptoStream.Write(plainBytes, , plainBytes.Length);
cryptoStream.FlushFinalBlock();
return Convert.ToBase64String(mStream.ToArray());
}
finally
{
cryptoStream.Close();
mStream.Close();
aes.Clear();
}
}
/// AES解密(无向量)
/// </summary>
/// <param name="encryptedBytes">被加密的明文</param>
/// <param name="key">密钥</param>
/// <returns>明文</returns>
public static string AESDecrypt(String Data, String Key)
{
Byte[] encryptedBytes = Convert.FromBase64String(Data);
Byte[] bKey = new Byte[];
Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length); MemoryStream mStream = new MemoryStream(encryptedBytes);
//mStream.Write( encryptedBytes, 0, encryptedBytes.Length );
//mStream.Seek( 0, SeekOrigin.Begin );
RijndaelManaged aes = new RijndaelManaged();
aes.Mode = CipherMode.ECB;
aes.Padding = PaddingMode.PKCS7;
aes.KeySize = ;
aes.Key = bKey;
//aes.IV = _iV;
CryptoStream cryptoStream = new CryptoStream(mStream, aes.CreateDecryptor(), CryptoStreamMode.Read);
try
{
byte[] tmp = new byte[encryptedBytes.Length + ];
int len = cryptoStream.Read(tmp, , encryptedBytes.Length + );
byte[] ret = new byte[len];
Array.Copy(tmp, , ret, , len);
return Encoding.UTF8.GetString(ret);
}
finally
{
cryptoStream.Close();
mStream.Close();
aes.Clear();
}
}
2. 256位 通用版 JAVA / C# / Object-C
/// <summary>
/// AES 加密
/// </summary>
/// <param name="str"></param>
/// <param name="key"></param>
/// <returns></returns>
public static string AesEncrypt(string str, string key)
{
if (string.IsNullOrEmpty(str)) return null;
Byte[] toEncryptArray = Encoding.UTF8.GetBytes(str);
RijndaelManaged rm = new RijndaelManaged
{
Key = Encoding.UTF8.GetBytes(key),
Mode = CipherMode.ECB,
Padding = PaddingMode.PKCS7
};
ICryptoTransform cTransform = rm.CreateEncryptor();
Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, , toEncryptArray.Length);
return Convert.ToBase64String(resultArray, , resultArray.Length);
}
/// <summary>
/// AES 解密
/// </summary>
/// <param name="str"></param>
/// <param name="key"></param>
/// <returns></returns>
public static string AesDecrypt(string str, string key)
{
if (string.IsNullOrEmpty(str)) return null;
Byte[] toEncryptArray = Convert.FromBase64String(str);
RijndaelManaged rm = new RijndaelManaged
{
Key = Encoding.UTF8.GetBytes(key),
Mode = CipherMode.ECB,
Padding = PaddingMode.PKCS7
};
ICryptoTransform cTransform = rm.CreateDecryptor();
Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, , toEncryptArray.Length);
return Encoding.UTF8.GetString(resultArray);
}
JAVA
package com.jun.project.utils; import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec; import org.apache.tomcat.util.codec.binary.Base64; public class AES { // 加密
public static String Encrypt(String sSrc, String sKey) throws Exception {
if (sKey == null) {
System.out.print("Key为空null");
return null;
}
// 判断Key是否为16位
if (sKey.length() != 16) {
System.out.print("Key长度不是16位");
return null;
}
byte[] raw = sKey.getBytes("utf-8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");//"算法/模式/补码方式"
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8")); return new Base64().encodeToString(encrypted);//此处使用BASE64做转码功能，同时能起到2次加密的作用。
} // 解密
public static String Decrypt(String sSrc, String sKey) throws Exception {
try {
// 判断Key是否正确
if (sKey == null) {
System.out.print("Key为空null");
return null;
}
// 判断Key是否为16位
if (sKey.length() != 16) {
System.out.print("Key长度不是16位");
return null;
}
byte[] raw = sKey.getBytes("utf-8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, skeySpec);
byte[] encrypted1 = new Base64().decode(sSrc);//先用base64解密
try {
byte[] original = cipher.doFinal(encrypted1);
String originalString = new String(original,"utf-8");
return originalString;
} catch (Exception e) {
System.out.println(e.toString());
return null;
}
} catch (Exception ex) {
System.out.println(ex.toString());
return null;
}
} public static void main(String[] args) throws Exception {
/*
* 此处使用AES-128-ECB加密模式，key需要为16位。
*/
String cKey = "ae125efkk4454eef";
// 需要加密的字串
String cSrc = "数据2343esdofsdfsdfw@wr[1";
System.out.println(cSrc);
// 加密
String enString = AES.Encrypt(cSrc, cKey);
System.out.println("加密后的字串是：" + enString); // 解密
String DeString = AES.Decrypt(enString, cKey);
System.out.println("解密后的字串是：" + DeString);
}
}