I am trying to verify signature added to a XML as per the instructions on the link below. It is returning false. I tried some code in Java too but will prefer NodeJS to work. Any other module recommendation is also welcome.
Instructions on the website for Validation
Steps to validate signature :
Read the entire XML and separate the s="xxxx" tag from it.
Use a signature validation algorithm leveraging "SHA256withRSA" based hashing and encryption technique
Signature value present in "s" tag, remaining XML (without "s" tag) and UIDAI public key (available here.) is to be fed to the algorithm to validate digital signature.
Sample code snippets provided here.
Please find below my code: [using NodeJS Crypto module]
var crypto = require('crypto');let fs = require('fs');const CERT = '-----BEGIN CERTIFICATE-----\n' + 'MIIDhTCCAm2gAwIBAgIEYhPgKjANBgkqhkiG9w0BAQsFADBrMQswCQYDVQQGEwJJ\n' + 'TjESMBAGA1UECBMJS2FybmF0YWthMRIwEAYDVQQHEwlCYW5nYWxvcmUxEDAOBgNV\n' + 'BAoTB2hjbC1hdWExEDAOBgNVBAsTB2hjbC1hdWExEDAOBgNVBAMTB2hjbC1hdWEw\n' + 'HhcNMTgwMTAzMTMyNTQ5WhcNMTkwMTAzMTMyNTQ5WjBrMQswCQYDVQQGEwJJTjES\n' + 'MBAGA1UECBMJS2FybmF0YWthMRIwEAYDVQQHEwlCYW5nYWxvcmUxEDAOBgNVBAoT\n' + 'B2hjbC1hdWExEDAOBgNVBAsTB2hjbC1hdWExEDAOBgNVBAMTB2hjbC1hdWEwggEi\n' + 'MA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCBgQBr8wRk6QbtUsq6YvxEnY22\n' + 'wr9mW62qVXpaWLVHYcbuVtBALf5LXFK3WnLAY15xKKQ9m9WZa8w2ZMpo20UePoLM\n' + 'QSda0Gk4gFhe0Dl+czlNSLMnMlYc4qWrPrpUlFTi7KZKDLKrQKpQjacY/OKqUVYj\n' + '98IPsbp/IivpSvkwIaS3J1cyORNYCdtDLhpAbUUX0rCrJJXl3245BCJ/3jbtpQ+F\n' + '7Cc81sBVYT31b+L04G3h5Ih3hsFg24xrJES1WglsBZBNAbFnSE2CjMfNLUIikZjz\n' + 'RfcQ5MZgU2/mGjlgGrLV/GX+8yQ0VRryWEmTNDDb0skGkY3ZQafgOHa0Vxg9AgMB\n' + 'AAGjMTAvMA4GA1UdDwEB/wQEAwIHgDAdBgNVHQ4EFgQUagX6xg6PhyaYYI6cjAip\n' + 'lBHT5S8wDQYJKoZIhvcNAQELBQADggEBAG1z3DQoXjo9u+QfflnymFvcwRcc+vQ1\n' + 'xE/5n85G5Gl6PD1fw0HSOOEMbt2obx/L367UVX0+bSi0eG7lFADSfL9G5B+RN+wP\n' + '0ItLNoG8uc9F0SbQMUw21WLEnkQydjjg+7wp4PXPxyEtaRNYLjus7UbU/xnHTf6W\n' + 'ltI9ngHEr1w69H9d17KiQsFBeGjg0qfH9CGhhKT2q0ETKWQSPI3fwCx3Z4AmS2nZ\n' + 'tog4WzWZlOMLHoPeYsFGv4gTgzbRWX0jc6HZ0057TDo+XWErcSuxBSGX8jEGLfp2\n' + 'tW4LOAE3autC9HsG4OQBiR+nEbMEHbm3Pv8meRvfgTV6P6qQiICeMaI=\n' + '-----END CERTIFICATE-----\n';verifier = crypto.createVerify('sha256WithRSAEncryption');verifier.update('<OKV v="1" n="Ravi Krishna Nalagatla" i="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" d="10121993" e="ac342bb947d5aa49847a0a05f87c388759a6cb156e04eac6ae995e9dca5ba1d9" m="254618fd06a2e7308247c7f0fb547f58174ab3b99e7b042d6705a5457235f32a" g="male" a="S/O Narasimham, 45, 74, 4, 7, Secunderabad, Hyderabad, Andhra Pradesh - 500003" r="328020181115111938451"/>'); //XML without S attributeconst signature ="VFKxVswVqlPDYOnp7rHUTtLVR3/NQN/p1dI61s1KSy102OgRI5YbXLj9Ng8Cy1fo6a5S62d0NldczYpztM5/E8Z6YUhtknhdVLD24fPijrFoUEqVC2S2fr8FUsCdVXNJEYd2v+UZ2grGYYi68rslaLO7z8SChoedsupRj2F1mwRyrof4u6kdAK5BxvubHPlEZ34Gv3ivuyJnJAKEyDkoymlm2GOAnaLUIxN5vdyBANZMOv9geH2poFOdUGVvOjDbpTPBF3Y5ADosYQYoErsONJ68x3iJsiZcG6dw1gPIW5J3B+X2vgXtFbF9xjFs7rZV9jk7Q8bJos5W8JuVjwV37g=="; //value of S attributevar result = verifier.verify(CERT, signature);console.log(result, 'result'); // **It is returning false always**. I am currently working on implementing a website that allows a user to (fictionally) buy and sell stocks. This is problem set 9 in Harvards' CS50 computer science course. My program compiles, functions and passes all checks. However, the past few days I've been stuck trying to implement a password change option.
On the password change page, I prompt the user to input their old password. Then, the user has to input their desired new password. Finally, the user has to confirm their new password once more.
However, my hashing function seems to output a different hash when a user inputs their old password, than it did when they registered with this password. This causes my comparison check between the hashed password in the database and the user input to always return false.
Below is the python code for the implementation of the password change. Below it is the html code for the actual page on which the user can change their password.
@app.route("/change", methods=["GET", "POST"])@login_required# PERSONAL TOUCH: <Allows user to change their password>def change():"""Allows user to change their password"""if request.method == "GET": return render_template("change.html")else: # Returns an error if Password is left blank if not request.form.get("originalpassword"): return apology("User must submit their original Password.", 400) elif not request.form.get("newpassword"): return apology("User must submit a new Password.", 400) elif not request.form.get("newconfirmation"): return apology("User must confirm their new Password", 400) # Hashes the Password Password = request.form.get("originalpassword") print("GIVEN PASSWORD: ", Password) HashedPassword = generate_password_hash(Password, method='pbkdf2:sha256', salt_length=8) # Returns an error if the user typed in a non-valid original password OldHashedPassword = db.execute("SELECT hash FROM users WHERE id = :id", id=session["user_id"]) Old_HPW = OldHashedPassword[0]["hash"] print("given hash: ", HashedPassword) print("actual hash: ", Old_HPW) print("=====\n",OldHashedPassword,"\n=====\n") if not Old_HPW == HashedPassword: return apology("Submitted password is not valid.") # Returns an error if Password and Confirmation are not identical if not request.form.get("newpassword") == request.form.get("confirmpassword"): return apology("New Password and Confirmation must be identical.", 400) # Hashes the new Password NewPassword = request.form.get("newpassword") NewHashedPassword = generate_password_hash(NewPassword, method='pbkdf2:sha256', salt_length=8) # Insert the new Password into the database insertPW = db.execute("INSERT INTO users (hash) VALUES(:hash)", hash=NewHashedPassword) return redirect("/")And the HTML code:
I did include a few print statements in order to debug. I registered a new account with username 'q', and password 'q'. Then, I attempted to change the password into 'qq'. During registration, the input 'q' resulted in the following hash:
pbkdf2:sha256:50000$sBxqbmza$e35dd4e61eb186af014e5e1ce3b73450b1361baabdd2f5f4559ad83ef0d5b45b
However, when I input 'q' into the 'original password' form field, the generate_password__hash function returns the hash:
pbkdf2:sha256:50000$iAjKAPM1$f7644f34f21864062efa2f3e3f3ea0a89a8a3391a0223c1a62fa7cbaab012a71
The values printed by the print statements are:
GIVEN PASSWORD: q
given hash:
pbkdf2:sha256:50000$iAjKAPM1$f7644f34f21864062efa2f3e3f3ea0a89a8a3391a0223c1a62fa7cbaab012a71
actual hash:
pbkdf2:sha256:50000$sBxqbmza$e35dd4e61eb186af014e5e1ce3b73450b1361baabdd2f5f4559ad83ef0d5b45b
Apologies for the very long post. Does anyone have an idea what is causing the hash function to output a different hash value for a (seemingly) similar input?
Thanks!
EDIT: this new code seems to have solved the problem:
I've been looking for standalone header-only sha256 and ripemd160 hash functions, preferably MIT licence, but GPL and others are fine too.
I found pico256, header only, I can integrate into a project. But I can't find both hash functions I need. I am not sure if I can just rip the bits out I want from OpenSSL, it's too big and complex.
If I can find a reasonable description of sha256 and ripemd160, I might have a go at implementing them myself.
Until then, does anyone know of either
a) standalone sha256 and ripemd160 C or C++ code I can compile into a project, or
b) a small library I can static link into a project?
I'm not sure how to do that with OpenSSL; I'm on Windows 10 and it always seems to want a DLL it generates for shared libraries. Maybe I'm just not building correctly for static linking without DLLs.
Thank you for any pointers or tips.
I'm configuring a gogs hook, I have an API that receives this POST from pushe.g.
secret: myS3cr3t
it's supposed that " Secret will be sent as SHA256 HMAC hex digest of payload via X-Gogs-Signature header."
then in python3 I got it like this:
message is the payload (json body) from the request and the key i set it on env var
import hashlibimport hmacdef get_secret_signature(message, secret): signature = hmac.new(bytes(key, 'utf-8'), bytes(message, 'utf-8'), hashlib.sha256).hexdigest() return signature but when checking the hook is failing cause the signature sent in X-Gogs-Signature never match with the signature generated on python
even comparing the logic with jenkins gogs plugin:
public static String encode(String data, String key) throws Exception { final Charset asciiCs = Charset.forName("UTF-8"); final Mac sha256_HMAC = Mac.getInstance("HmacSHA256"); final SecretKeySpec secret_key = new javax.crypto.spec.SecretKeySpec(asciiCs.encode(key).array(), "HmacSHA256"); sha256_HMAC.init(secret_key); return Hex.encodeHexString(sha256_HMAC.doFinal(data.getBytes("UTF-8")));}I think it's the same logic in python, obviously shorter in python ;)
This question already has an answer here:
I am trying to bruteforce a SHA256 using Python2 , and when I run the script I get a ValueError:
ValueError: chr() arg not in range(256)My Code
from hashlib import sha256import osdef encrypt(pt): state = 47 ### ...ct = "sha256 hash".decode('hex')pt = 'FLAG{'while len(pt) < len(ct): c = chr(32) while encrypt(pt) != ct[:len(pt) + 1]: c = chr(ord(c) + 1) pt += c print(pt) Output :
Traceback (most recent call last): File "sls.py", line 13, in <module> c = chr(ord(c) + 1)ValueError: chr() arg not in range(256)Where am I bugging ?
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