自从我在 Android 应用程序中使用它以来，我已经发布了这篇文章，以寻求在 Java 中加密和解密的帮助。我让加密工作，但我仍然无法用它来解密字符串。有任何想法吗？？？？下面的代码是我得到的错误。
import com.sun.org.apache.xml.internal.security.utils.Base64;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
private final String characterEncoding = "UTF-8";
private final String cipherTransformation = "AES/CBC/PKCS5Padding";
private final String aesEncryptionAlgorithm = "AES";
public String decrypt(String plainTextString, String SecretKey) throws
KeyException,
GeneralSecurityException,
GeneralSecurityException,
InvalidAlgorithmParameterException,
IllegalBlockSizeException,
BadPaddingException,
IOException{
byte[] cipheredBytes = Base64.decode(plainTextString, Base64.BASE64DEFAULTLENGTH);
byte[] keyBytes = getKeyBytes(SecretKey);
return new String(decrypt(cipheredBytes, keyBytes, keyBytes), characterEncoding);
}
public byte[] decrypt(byte[] cipherText, byte[] key, byte [] initialVector) throws
NoSuchAlgorithmException,
NoSuchPaddingException,
InvalidKeyException,
InvalidAlgorithmParameterException,
IllegalBlockSizeException,
BadPaddingException {
Cipher cipher = Cipher.getInstance(cipherTransformation);
SecretKeySpec secretKeySpecy = new SecretKeySpec(key, aesEncryptionAlgorithm);
IvParameterSpec ivParameterSpec = new IvParameterSpec(initialVector);
cipher.init(Cipher.DECRYPT_MODE, secretKeySpecy, ivParameterSpec);
cipherText = cipher.doFinal(cipherText);
return cipherText;
}
public byte[] encrypt(byte[] plainText, byte[] key, byte [] initialVector) throws
NoSuchAlgorithmException,
NoSuchPaddingException,
InvalidKeyException,
InvalidAlgorithmParameterException,
IllegalBlockSizeException,
BadPaddingException {
Cipher cipher = Cipher.getInstance(cipherTransformation);
SecretKeySpec secretKeySpec = new SecretKeySpec(key, aesEncryptionAlgorithm);
IvParameterSpec ivParameterSpec = new IvParameterSpec(initialVector);
cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, ivParameterSpec);
plainText = cipher.doFinal(plainText);
return plainText;
}
private byte[] getKeyBytes(String key) throws UnsupportedEncodingException{
byte[] keyBytes= new byte[16];
byte[] parameterKeyBytes= key.getBytes(characterEncoding);
System.arraycopy(parameterKeyBytes, 0, keyBytes, 0, Math.min(parameterKeyBytes.length, keyBytes.length));
return keyBytes;
}
public String encrypt(String plainText, String key) throws
UnsupportedEncodingException,
InvalidKeyException,
NoSuchAlgorithmException,
NoSuchPaddingException,
InvalidAlgorithmParameterException,
IllegalBlockSizeException,
BadPaddingException{
byte[] plainTextbytes = plainText.getBytes(characterEncoding);
byte[] keyBytes = getKeyBytes(key);
return Base64.encode(encrypt(plainTextbytes,keyBytes, keyBytes));
}
NETBEANS 错误：
no suitable method found for decode(String,int)
method Base64.decode(InputStream,OutputStream) is not applicable
(actual argument String cannot be converted to InputStream by method invocation conversion)
method Base64.decode(byte[],OutputStream,int) is not applicable
(actual and formal argument lists differ in length)
method Base64.decode(byte[],OutputStream) is not applicable
(actual argument String cannot be converted to byte[] by method invocation conversion)
method Base64.decode(String,OutputStream) is not applicable
(actual argument int cannot be converted to OutputStream by method invocation conversion)
method Base64.decode(String) is not applicable
(actual and formal argument lists differ in length)
method Base64.decode(BufferedReader) is not applicable
(actual and formal argument lists differ in length)
method Base64.decode(byte[]) is not applicable
(actual and formal argument lists differ in length)
method Base64.decode(Element) is not applicable
(actual and formal argument lists differ in length)