How to decript password using nodejs or javascript

Question

Tried to see my password from my database.My password is test123 So in my database i have saved like this : $2a$10$0V1JkVfl8n.WD/QbInIWqubjcaxnCCnP3K.bhuxjAQbJ9LyFiNTdu. How to see my password again like test123 from $2a$10$0V1JkVfl8n.WD/QbInIWqubjcaxnCCnP3K.bhuxjAQbJ9LyFiNTdu.

Can we do using nodejs or javascript?

    var crypto = require("crypto");
    var password = '$2a$10$0V1JkVfl8n.WD/QbInIWqubjcaxnCCnP3K.bhuxjAQbJ9LyFiNTdu';  
    var algorithm = "aes-192-cbc"; //algorithm to use
     
    const key = crypto.scryptSync(password, 'salt', 24); //create key
    var text = '?????????????????????????"; //text to be encrypted

    const iv = Buffer.alloc(16, 0);
    const cipher = crypto.createCipheriv(algorithm, key, iv);
    var encrypted = cipher.update(text, 'utf8', 'hex') + cipher.final('hex'); // encrypted text

    const decipher = crypto.createDecipheriv(algorithm, key, iv);
    var decrypted = decipher.update(encrypted, 'hex', 'utf8') + decipher.final('utf8');  

    console.log(decrypted);  //Output should be like test123

codingwithmanny · Answer 1 · 2020-07-05T08:50:43.343

1

I don't believe it's meant to be decrypted on purpose.

"Cryptographic hash functions are a special type of one-way calculation"

What is hashing?

Cryptographic hash functions are a special type of one-way calculation. They take a string of data of any size and always give an output of a predetermined length. This output is called the hash, hash value or message digest. Since these functions don’t use keys, the result for a given input is always the same.

Encryption, hashing, salting – what’s the difference?

StackOverflow question:

"HMAC is a MAC/keyed hash, not a cipher. It's not designed to be decrypted. If you want to encrypt something, use a cipher, like AES, preferably in an authenticated mode like AES-GCM.

The only way to "decrypt" is guessing the whole input and then comparing the output."

How can I decrypt a HMAC?

edited Jul 05 '20 at 08:50

answered Jul 04 '20 at 15:15

codingwithmanny

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Getting confusion – Pappa S Jul 04 '20 at 15:42
@PappaS See updated answers with references the wording. – codingwithmanny Jul 04 '20 at 19:16
Instead of using code formatting for text you are quoting please use the quote formatting. Insert a `>` at the start of the line, use two spaces at the end of the line to insert a line break and continue the quote. – Jason Aller Jul 05 '20 at 01:15

Halil Azyikmis · Answer 2 · 2020-07-04T22:19:51.463

0

All these encrypting algorithms are trying NOT to do exactly what you are asking for :). It's a one way process. That means there is no well-known library in javascript or nodejs world to easily decrypt your password. Maybe there might be some applications, just using try-and-error method to guess your password.

edited Jul 04 '20 at 22:19

answered Jul 04 '20 at 15:24

Halil Azyikmis

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score 0 · Answer 3 · answered Jul 04 '20 at 22:28

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It's not possible. Your password had the following functions applied.

Saved value = HASH(Password + salt)

That can't be undone.

answered Jul 04 '20 at 22:28

Warren Parad

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How to decript password using nodejs or javascript

3 Answers3