我们对其中一个表中的某些数据进行了aes-256加密,我们正在将其迁移到sql server。问题是由于不兼容,我们无法解密sql server中的数据。有没有什么办法可以用兼容sql server的方式加密MYSQL中的数据。有什么建议吗?
答案 0 :(得分:0)
如果您知道密钥,那么您可以解密数据,请参阅以下代码以加密和解密AES-256。代码是用JAVA编写的 点击此链接AES-256 Password Based Encryption/Decryption in Java
import java.security.AlgorithmParameters;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.SecretKeySpec;
import javax.xml.bind.DatatypeConverter;
public class EncryptionDecryption {
private static String salt;
private static int iterations = 65536 ;
private static int keySize = 256;
private static byte[] ivBytes;
private static SecretKey secretKey;
public static void main(String []args) throws Exception {
salt = getSalt();
char[] message = "PasswordToEncrypt".toCharArray();
System.out.println("Message: " + String.valueOf(message));
System.out.println("Encrypted: " + encrypt(message));
System.out.println("Decrypted: " + decrypt(encrypt(message).toCharArray()));
}
public static String encrypt(char[] plaintext) throws Exception {
byte[] saltBytes = salt.getBytes();
SecretKeyFactory skf = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
PBEKeySpec spec = new PBEKeySpec(plaintext, saltBytes, iterations, keySize);
secretKey = skf.generateSecret(spec);
SecretKeySpec secretSpec = new SecretKeySpec(secretKey.getEncoded(), "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, secretSpec);
AlgorithmParameters params = cipher.getParameters();
ivBytes = params.getParameterSpec(IvParameterSpec.class).getIV();
byte[] encryptedTextBytes = cipher.doFinal(String.valueOf(plaintext).getBytes("UTF-8"));
return DatatypeConverter.printBase64Binary(encryptedTextBytes);
}
public static String decrypt(char[] encryptedText) throws Exception {
System.out.println(encryptedText);
byte[] encryptedTextBytes = DatatypeConverter.parseBase64Binary(new String(encryptedText));
SecretKeySpec secretSpec = new SecretKeySpec(secretKey.getEncoded(), "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, secretSpec, new IvParameterSpec(ivBytes));
byte[] decryptedTextBytes = null;
try {
decryptedTextBytes = cipher.doFinal(encryptedTextBytes);
} catch (IllegalBlockSizeException e) {
e.printStackTrace();
} catch (BadPaddingException e) {
e.printStackTrace();
}
return new String(decryptedTextBytes);
}
public static String getSalt() throws Exception {
SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
byte[] salt = new byte[20];
sr.nextBytes(salt);
return new String(salt);
}
}