OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	02/18/2024 07:58:21 PM	rwxr-xr-x
📄 __init__.py	707 bytes	05/22/2015 03:50:55 PM	rw-r--r--
📄 __main__.py	3.49 KB	05/22/2015 03:50:55 PM	rw-r--r--
📁 __pycache__	-	02/18/2024 07:58:21 PM	rwxr-xr-x
📄 algorithms.py	8.56 KB	08/29/2017 06:41:31 PM	rw-r--r--
📄 api_jws.py	6.01 KB	05/22/2015 03:50:55 PM	rw-r--r--
📄 api_jwt.py	6 KB	05/22/2015 03:50:55 PM	rw-r--r--
📄 compat.py	1.17 KB	05/22/2015 03:50:55 PM	rw-r--r--
📁 contrib	-	02/18/2024 07:58:21 PM	rwxr-xr-x
📄 exceptions.py	643 bytes	04/26/2015 06:00:59 PM	rw-r--r--
📄 utils.py	1.53 KB	05/22/2015 03:50:55 PM	rw-r--r--

Editing: utils.py

import base64
import binascii

try:
    from cryptography.hazmat.primitives.asymmetric.utils import (
        decode_rfc6979_signature, encode_rfc6979_signature
    )
except ImportError:
    pass

def base64url_decode(input):
    rem = len(input) % 4

if rem > 0:
        input += b'=' * (4 - rem)

return base64.urlsafe_b64decode(input)

def base64url_encode(input):
    return base64.urlsafe_b64encode(input).replace(b'=', b'')

def merge_dict(original, updates):
    if not updates:
        return original

try:
        merged_options = original.copy()
        merged_options.update(updates)
    except (AttributeError, ValueError) as e:
        raise TypeError('original and updates must be a dictionary: %s' % e)

return merged_options

def number_to_bytes(num, num_bytes):
    padded_hex = '%0*x' % (2 * num_bytes, num)
    big_endian = binascii.a2b_hex(padded_hex.encode('ascii'))
    return big_endian

def bytes_to_number(string):
    return int(binascii.b2a_hex(string), 16)

def der_to_raw_signature(der_sig, curve):
    num_bits = curve.key_size
    num_bytes = (num_bits + 7) // 8

r, s = decode_rfc6979_signature(der_sig)

return number_to_bytes(r, num_bytes) + number_to_bytes(s, num_bytes)

def raw_to_der_signature(raw_sig, curve):
    num_bits = curve.key_size
    num_bytes = (num_bits + 7) // 8

if len(raw_sig) != 2 * num_bytes:
        raise ValueError('Invalid signature')

r = bytes_to_number(raw_sig[:num_bytes])
    s = bytes_to_number(raw_sig[num_bytes:])

return encode_rfc6979_signature(r, s)