I have to represent this node.js code in Microsoft Jscript. How can I do that?
const crypto = require('crypto');
var value = 'helloworld';
var hash = crypto.createHash('sha256').update(value).digest('hex')
Related
I am looking for standard utility for supporting the encryption & decryption based on the below algorithm in node server side.
algorithm: aes-256-gcm
using the createCipheriv, createDecipheriv from nodejs crypto module.
Please suggest some working references
The utility need to build it from your side, and based on your needs below are the small code may help you to build the utility:
const crypto = require('crypto');
// This two value (ivValueEn , ivValueDe) should be same, to decode the text properly!
// you can generate any strong value and past it at the same place of you can have it from the config value.
const ivValueEn = "c5949f09a7e67318888c5949f09a7e6c09ca51e602867318888c5949f09a7e6c09ca51e602867318888";
const ivValueDe = "c5949f09a7e6c09ca51e602867318888c5949f09a7e6c09ca51e602867319ca51e602867318888";
// insert your key here, better to chose a strong key
const keyValue = "c5949f09a7e6c09a7e6c09ca51e602867318888c5949f09a7e6c09ca51e602867318888";
// slicing are not required you can remove the slice(0,64) part & the console.log as well
const alog = 'aes-256-gcm'
const ivEn = ivValueEn.toString('hex').slice(0,64); console.log(ivEn);
const ivDe = ivValueDe.toString('hex').slice(0,64); console.log(ivDe);
// The one that working with me correctly is to slicing the key to (32) characters.
const key = keyValue.slice(0,32);
const cipher = crypto.createCipheriv(alog,key,ivEn);
const decipher = crypto.createDecipheriv (alog,key,ivDe);
const crypto = require('crypto');
hm = crypto.createHmac("sha256","Some String");
console.log(hm.digest("base64"));
Running this gives me:
Nd6Q8epsIBG+c/jN6TdnfRNbFWCcB7bI0DYkfyDqf+8=
(repl)
But calculating the sha256 at https://approsto.com/sha-generator/ gives me:
fw/WRlO6C7Glec7Str83XpFsxgZiEJ7gwLJPCnUMOmw
Why is there a difference?
Use Hash instead of Hmac.
const crypto = require('crypto');
hash = crypto.createHash("sha256");
hash.update("Some String");
console.log(hash.digest("base64"));
Result:
fw/WRlO6C7Glec7Str83XpFsxgZiEJ7gwLJPCnUMOmw=
See also:
What is the difference between a HMAC and a hash of data?
When using Node.js crypto module
const crypto = require('crypto');
HMACseed = crypto.createHmac('sha512', 'a55e3e55ff89d1cfeab1c85ac4dc7517d8d3228bb41a7d86de9cdf5587126de7').update('02de498327ba9544ba3b5c3d855a56a6761737a399d099b46b2a1d69491ca64ae400000001').digest('hex');
console.log(HMACseed)
result
08b87c15c5cc62ebcdb8cf5bf6a61cd168387fcc59db119e19ecd8deb67380dda98dd5faf7409face6ebcb187929176636f593dadbe7d7aa44a1ed59bbe0dff6
But using https://caligatio.github.io/jsSHA/
result
6b1312b3706844b11dd50012dd31be8d77f2f7cd9ec0624f730ee24bc4246084cbcaf10f63610cca1b4cc86e8b32a29b6c495a3b8bd28de4d3fd0b98df483530
key = 'a55e3e55ff89d1cfeab1c85ac4dc7517d8d3228bb41a7d86de9cdf5587126de7'
data = '02de498327ba9544ba3b5c3d855a56a6761737a399d099b46b2a1d69491ca64ae400000001'
I wonder why the jsSHA will result different value of HMAC-256.
You need to using hex as input or it will regard it as text input.
HMACseed = crypto.createHmac('sha512', Buffer.from('a55e3e55ff89d1cfeab1c85ac4dc7517d8d3228bb41a7d86de9cdf5587126de7', 'hex')).update(Buffer.from('02de498327ba9544ba3b5c3d855a56a6761737a399d099b46b2a1d69491ca64ae400000001','hex')).digest('hex');
console.log(HMACseed)
I have some sample code for an API, but it's in Ruby, whereas I'd prefer to use nodeJS. Could you any of you kind ruby/JS chaps let me know what the JS equivalent would be, and any npm libraries I would need to install.
hmac = OpenSSL::HMAC.new(sharedsecret, OpenSSL::Digest::SHA512.new)
signature = hmac.update(url)
Try this one
var crypto = require('crypto');
hmac = crypto.createHmac('SHA512', sharedsecret);
hmac.update(url);
signature = hmac.digest('hex');
I want to use nodeJS to sign a file. I got one p12 certificate (which includes the private key), a passphrase and a pem certificate.
This here shows how it is been done in ruby:
https://gist.github.com/de4b602a213b4b264706
Thanks in advance!
You should be able to use createSign in the crypto module (see http://nodejs.org/docs/v0.4.2/api/all.html#crypto) to do what you want. The code will end up looking something like this (from http://chimera.labs.oreilly.com/books/1234000001808/ch05.html#chap7_id35952189):
var crypto = require('crypto');
var fs = require('fs');
var pem = fs.readFileSync('key.pem');
var key = pem.toString('ascii');
var sign = crypto.createSign('RSA-SHA256');
sign.update('abcdef'); // data from your file would go here
var sig = sign.sign(key, 'hex');