Question

我是React Native的初学者。我可以使用react-native-image-picker捕获图像，并且可以将捕获的照片上传到AWS s3。但是，我想在Android设备中对捕获的图像进行加密或散列，并且在上传之前，我需要解密它们。所拍摄的照片必须在手机内加密/散列，仅通过我的应用程序，我就需要解密它们。我该如何实现。

有两种方法，

在takePic方法中，我想先对其进行加密，然后再存储在设备中；在上载方法中，我想在上传之前对其进行解密。我用谷歌搜索。但是我没有得到任何适当的文档。

您能帮忙吗？

我的代码是

import React, { Component } from "react";
import {
  Platform,
  StyleSheet,
  Alert,
  Text,
  TouchableOpacity,
  View,
  Picker,
  Animated,
  Easing,
  Image
} from "react-native";
import ImagePicker from "react-native-image-picker";
import { RNS3 } from "react-native-aws3";

export default class SecondScreen extends Component<Props> {
  constructor(props) {
    super(props);
    this.state = {
      file: "",
      saveImages: []
    };
  }

  takePic() {
    const options = {
          quality: 1.0,
          maxWidth: 50,
          maxHeight: 50,
      }
    ImagePicker.launchCamera(options,(responce)=>{
      const file = {
        uri: responce.uri,
        name: responce.fileName,
        method: "POST",
        path: responce.path,
        type: responce.type,
        notification: {
          enabled: true
        }
      };
      this.state.saveImages.push(file);
    });
  }
  _upload = saveImages => {
    const config = {
      keyPrefix: "uploads/",
      bucket: "myBukectName",
      region: "us-east-2",
      accessKey: "***",
      secretKey: "***",
      successActionStatus: 201
    };

    this.state.saveImages.map(image => {
      RNS3.put(image, config).then(responce => {
        console.log(saveImages);
      });
    });

    //once after upload is done delete from the gallary
  };
  render() {
    return (
      <View style={styles.container}>
        <View style={styles.Camera}>
          <TouchableOpacity onPress={this.takePic.bind(this)}>
            <Text>Take Picture</Text>
          </TouchableOpacity>
        </View>
        <View style={styles.Send}>
          <TouchableOpacity onPress={() => this._upload()}>
            <Text>Send</Text>
          </TouchableOpacity>
        </View>
      </View>
    );
  }
}

Answer 1

我已经使用react-native-base64做到了，我正在使用python在服务器端进行解密。（从文件中获取base64数据并进行解码。）

takePic（）{

//set of other codes
   const base64 = RNFS.writeFile(responce.uri, responce.data);
   return base64;
   //this will create the base64 image file

}

如何在React Native中对捕获的图像进行加密和解密？

1 个答案: