[英]Encrypt and cannot decrypt back
My problem is that I wrote a program that encrypts and decrypts files but doesn't decrypt it properly. 我的问题是我写了一个可以加密和解密文件但不能正确解密的程序。 I use AES-256 algorithm. 我使用AES-256算法。
File system: There are files in project folder: 文件系统:项目文件夹中有文件:
main.js
package.json
package-lock.json
files
text1.txt
Here is main.js file: 这是main.js文件:
// Import modules
fs = require('fs');
aes = require('aes256');
// Change directory
process.chdir('files');
// Choosing global variables
path = process.cwd();
key = 'test';
// Encrypt and decrypt files
enc = file => {
return aes.encrypt(key,file)
}
decr = encr => {
return aes.decrypt(key,encr)
}
// Encrypt file
fl = fs.readFileSync('file1.txt').toString();
fs.writeFileSync('file1.txt',enc(fl));
// Timeout
setTimeout(()=> {
// Read file again and decrypt
newfl = fs.readFileSync('file1.txt').toString()
fs.writeFileSync('file1.txt',decr(fl))
}, 3000);
If I run node main
it firstly encrypts a file, then decrypts: 如果我运行node main
它首先会加密文件,然后解密:
First step: 第一步:
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Second step: 第二步:
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Third step: 第三步:
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Why it doesn't decrypt back? 为什么不解密回来?
you need to pass encrypted file content to decr function, you are passing old file content for decryption 您需要将加密的文件内容传递给decr函数,您正在传递旧的文件内容以进行解密
Change 更改
setTimeout(()=> {
// Read file again and decrypt
newfl = fs.readFileSync('file1.txt').toString()
fs.writeFileSync('file1.txt',decr(fl))
}, 3000);
to 至
setTimeout(()=> {
// Read file again and decrypt
newfl = fs.readFileSync('file1.txt').toString()
fs.writeFileSync('file1.txt',decr(newfl))
}, 3000);
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