Cipher functions:OPENSSL_internal:BAD_DECRYPT

Question

If you're trying to decrypt a string using nodejs, you will get this error if you're not using the proper input encoding and output encoding.

When doing decrypt, the input / output should be reverse of what was used during input.

 var mykey = _crypt.createCipheriv('aes-256-cbc', key, iv);
        var myNom = mykey.update(nom, 'utf8', 'hex')
        myNom += mykey.final('hex');
        console.log("myNom: ", myNom.toString())

mahen23 · Accepted Answer · 2019-09-06 11:59:29Z

1

Decrypt phase is the opposite input / output encoding.

 var mykey = _crypt.createDecipheriv('aes-256-cbc', key, iv);
        var myNom = mykey.update(cipheredtextgoeshere, 'hex', 'utf8') //reversed
        myNom += mykey.final('utf8'); //reversed
        console.log("Decrypted: ", myNom.toString())

answered Sep 6, 2019 at 11:59

mahen23

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