如何使用Dart加密视频文件? [英] How can I encrypt video file using Dart?
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问题描述
我正在尝试使用dart加密视频剪辑.我已经测试过此Java代码 https://stackoverflow.com/a/9496626/8511016 ,并且希望这样做但使用飞镖.
I am trying to encrypt a video clip using dart. I have tested this java code https://stackoverflow.com/a/9496626/8511016 and would like to do the same but using dart.
推荐答案
这是我找到的解决方案.希望能帮助到你.请记住将包加密包添加到pubspec.yaml
Here is the solution that I found. Hope it helps. Remember to add the package encryption package to pubspec.yaml
import 'dart:convert';
import 'dart:io';
import 'package:encrypt/encrypt.dart';
main() {
perfomEncryptionTasks();
}
perfomEncryptionTasks() async {
await encryptFile();
await decryptFile();
}
encryptFile() async {
File inFile = new File("video.mp4");
File outFile = new File("videoenc.aes");
bool outFileExists = await outFile.exists();
if(!outFileExists){
await outFile.create();
}
final videoFileContents = await inFile.readAsStringSync(encoding: latin1);
final key = Key.fromUtf8('my 32 length key................');
final iv = IV.fromLength(16);
final encrypter = Encrypter(AES(key));
final encrypted = encrypter.encrypt(videoFileContents, iv: iv);
await outFile.writeAsBytes(encrypted.bytes);
}
decryptFile() async {
File inFile = new File("videoenc.aes");
File outFile = new File("videodec.mp4");
bool outFileExists = await outFile.exists();
if(!outFileExists){
await outFile.create();
}
final videoFileContents = await inFile.readAsBytesSync();
final key = Key.fromUtf8('my 32 length key................');
final iv = IV.fromLength(16);
final encrypter = Encrypter(AES(key));
final encryptedFile = Encrypted(videoFileContents);
final decrypted = encrypter.decrypt(encryptedFile, iv: iv);
final decryptedBytes = latin1.encode(decrypted);
await outFile.writeAsBytes(decryptedBytes);
}
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