Question

我在java中使用AES加密/解密代码，但出于某种原因，我需要将其迁移到VB.net，但我不知道该怎么做

java代码

public class DECODECLASS {
public static final int CHUNK_SIZE = 6144;
public static final String PKCS7_PADDING = "AES/CBC/PKCS7Padding";
public static final int STARTING_LOCATION = 0;
public static final int STREAM_FINISH_LOCATION = -1;

public void encrypt(File inputFile, File outputFile) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IOException, IllegalBlockSizeException, BadPaddingException {
    FileInputStream fis = new FileInputStream(inputFile);
    FileOutputStream fos = new FileOutputStream(outputFile);
    Cipher cipher = Cipher.getInstance(PKCS7_PADDING);
    byte[] keyBytes = new byte[32];
    System.arraycopy(MessageDigest.getInstance("SHA-256").digest(), STARTING_LOCATION, keyBytes, STARTING_LOCATION, keyBytes.length);
    cipher.init(1, new SecretKeySpec(keyBytes, "AES"), new IvParameterSpec(new byte[16]));
    CipherInputStream inputStream = new CipherInputStream(fis, cipher);
    byte[] data = new byte[CHUNK_SIZE];
    while (true) {
        int count = inputStream.read(data, STARTING_LOCATION, CHUNK_SIZE);
        if (count != STREAM_FINISH_LOCATION) {
            fos.write(data, STARTING_LOCATION, count);
        } else {
            fis.close();
            fos.close();
            inputStream.close();
            return;
        }
    }
}

public void decrypt(File inputFile, File outputfile) throws InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidAlgorithmParameterException, IOException, IllegalBlockSizeException, BadPaddingException {
    FileInputStream fis = new FileInputStream(inputFile);
    FileOutputStream fos = new FileOutputStream(outputfile);
    Cipher cipher = Cipher.getInstance(PKCS7_PADDING);
    byte[] keyBytes = new byte[32];
    System.arraycopy(MessageDigest.getInstance("SHA-256").digest(), STARTING_LOCATION, keyBytes, STARTING_LOCATION, keyBytes.length);
    cipher.init(2, new SecretKeySpec(keyBytes, "AES"), new IvParameterSpec(new byte[16]));
    CipherInputStream inputStream = new CipherInputStream(fis, cipher);
    byte[] data = new byte[CHUNK_SIZE];
    while (true) {
        int count = inputStream.read(data, STARTING_LOCATION, CHUNK_SIZE);
        if (count != STREAM_FINISH_LOCATION) {
            fos.write(data, STARTING_LOCATION, count);
        } else {
            fis.close();
            fos.close();
            inputStream.close();
            return;
        }
    }
} }

我试过java到VB转换器，但没有运气

javax.crypto.Cipher和java.security.MessageDigest

在VB中不可用我找到了一些替代Here，Here和一些来自Here但没有任何线索，因为这是我的第一篇文章，对于任何错误或不便表示抱歉，并衷心感谢stackoverflow社区始终在那里寻求帮助。任何帮助都是最受欢迎的。

java.net中的java AES解密代码

0 个答案: