CODEWITHSUNDEEP
javascriptphpnode.jscompressiongzip
Elli Zorro
Elli Zorro

Reputation: 501

How to decompress binary data in node js

After I decrypt data from base 64 to binary, I want to unzip this data.

In PHP language, we have gzdecode() built-in function, but I use node js in my project, and I don't know how I can decompress binary data using gzip. I get encryption data in request body, then I decrypted it and then I want unzip my decrypted data. After this steps I store decrypted data in my mongodb database

My code for decrypt data from base 64 to binary form

function decrypt(text, salt, iv) {
const password = "password";
crypto.pbkdf2(password, salt, 65536, 256, "sha256", (err, key) => {
  try {
    const key32 = key.slice(0, 32);
    const decipher = crypto.createDecipheriv("aes-256-cbc", key32, iv);
    let decrypted = decipher.update(text, "base64", "binary");
    decrypted += decipher.final("binary");
    // and then I want decompress my `decrypted` variable
    // like gzdecode(decrypted) in php
  } catch (error) {
    throw new Error(error)
  }
});
}
  decrypt(plainText, salt, iv)

Upvotes: 2

Views: 1964

Answers (1)

Alex Stepanov
Alex Stepanov

Reputation: 411

Node.js has built-in ZLib support. Once you are done decrypting, you can use:

Hope that helps!

Upvotes: 3

Related Questions