android 通过AES对视频文件进行加解密

import android.os.Build;
import android.security.keystore.KeyGenParameterSpec;
import android.security.keystore.KeyProperties;
import android.util.Log;

import androidx.annotation.RequiresApi;

import java.io.*;
import java.security.*;

import javax.crypto.*;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

public class AesEncryptorUtils {

    // 加密MP4文件
    public static void encryptVideo(File inputFile, File outputFile) throws Exception {

        Log.i("xxxxxx", "encryptVideo: ");

        String key2 = "1234567890123456"; // 16 bytes for AES-128
        String initVector = "RandomInitVector";
        IvParameterSpec iv = new IvParameterSpec(initVector.getBytes("UTF-8"));
        SecretKeySpec skeySpec = new SecretKeySpec(key2.getBytes("UTF-8"), "AES");

        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");//AES/CBC/PKCS5Padding
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);

        Log.i("xxxx", "   1111111");
        // 将IV写入文件头部（16字节）
        try (FileOutputStream fos = new FileOutputStream(outputFile);
             FileInputStream fis = new FileInputStream(inputFile)) {
            Log.i("xxxx", "   2222222222");
            fos.write(cipher.getIV()); // 保存IV

            try (CipherOutputStream cos = new CipherOutputStream(fos, cipher)) {
                byte[] buffer = new byte[8192];
                int bytesRead;
                while ((bytesRead = fis.read(buffer)) != -1) {

                    cos.write(buffer, 0, bytesRead);
                }
            } catch (Exception e) {
                Log.i("xxxx", "   44444444");
            }
        } catch (Exception e) {
            Log.i("xxxx", "   5555555555555");
        }

        Log.i("xxxxxx", "66666666666666  ");

    }

  // 解密MP4文件
    public static void decryptVideo(File inputFile, File outputFile) throws Exception {
        try (FileInputStream fis = new FileInputStream(inputFile);
             FileOutputStream fos = new FileOutputStream(outputFile)) {

            // 从文件头部读取IV

            String key2 = "1234567890123456"; // 16 bytes for AES-128
            String initVector = "RandomInitVector";
            IvParameterSpec iv = new IvParameterSpec(initVector.getBytes("UTF-8"));
            SecretKeySpec skeySpec = new SecretKeySpec(key2.getBytes("UTF-8"), "AES");

            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");//AES/CBC/PKCS5Padding
            cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);

            Log.i("xxxxxx", "777777  ");

            try (CipherInputStream cis = new CipherInputStream(fis, cipher)) {
                byte[] buffer = new byte[8192];
                int bytesRead;
                while ((bytesRead = cis.read(buffer)) != -1) {
                    fos.write(buffer, 0, bytesRead);
                }
            }
        }

        Log.i("xxxxxx", "8888888888888  ");

    }

}

方法调用：

    private void aesEncryptor() {
        try {
            File origVideo = new File(path);
            File encryptedVideo = new File(encryptedVideoPath);
            File decryptedVideo = new File(decryptVideoPath);

            // 加密原视频
            // AesEncryptorUtils.encryptVideo(origVideo, encryptedVideo);

            // 解密视频
            AesEncryptorUtils.decryptVideo(encryptedVideo, decryptedVideo);

        } catch (Exception e) {
            e.printStackTrace();
        }

    }