这是我的java代码使用des
public class DES {
public static String encode(String str, String key) throws Exception {
byte[] rawKey=Base64.decode(key);
IvParameterSpec sr=new IvParameterSpec(rawKey);
DESKeySpec dks=new DESKeySpec(rawKey);
SecretKeyFactory keyFactory=SecretKeyFactory.getInstance("DES");
SecretKey secretKey=keyFactory.generateSecret(dks);
javax.crypto.Cipher cipher=Cipher.getInstance("DES/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, secretKey, sr);
byte data[]=str.getBytes("UTF8");
byte encryptedData[]=cipher.doFinal(data);
return Base64.encode(encryptedData).trim();
}
public static String decode(String str, String key) throws Exception {
byte[] rawKey=Base64.decode(key);
IvParameterSpec sr=new IvParameterSpec(rawKey);
DESKeySpec dks=new DESKeySpec(rawKey);
SecretKeyFactory keyFactory=SecretKeyFactory.getInstance("DES");
SecretKey secretKey=keyFactory.generateSecret(dks);
Cipher cipher=Cipher.getInstance("DES/CBC/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, secretKey, sr);
byte encryptedData[]=Base64.decode(str);
byte decryptedData[]=cipher.doFinal(encryptedData);
return new String(decryptedData, "UTF8").trim();
}
}
我是objective-c的新手，在Ojbective-c DES中遇到了一些麻烦，上面的代码是使用java，我想加密或解密一个字符串，最终在Object-c中得到相同的结果。