FM / asymmetric

/snap/core20/2769/usr/lib/python3/dist-packages/cryptography/hazmat/primitives/asymmetric/

/snap/core20/2769/usr/lib/python3/dist-packages/cryptography/hazmat/primitives/asymmetric

Name	Size	Mode	Actions
__pycache__/	-	0755	rm
dh.py	5454	0644	edit dl rm
dsa.py	6891	0644	edit dl rm
ec.py	13758	0644	edit dl rm
ed448.py	2322	0644	edit dl rm
ed25519.py	2395	0644	edit dl rm
padding.py	2261	0644	edit dl rm
rsa.py	10317	0644	edit dl rm
utils.py	1184	0644	edit dl rm
x448.py	2249	0644	edit dl rm
x25519.py	2281	0644	edit dl rm
__init__.py	1020	0644	edit dl rm

Edit: /snap/core20/2769/usr/lib/python3/dist-packages/cryptography/hazmat/primitives/asymmetric/utils.py (1184B)

# This file is dual licensed under the terms of the Apache License, Version
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
# for complete details.

from __future__ import absolute_import, division, print_function

from cryptography import utils
from cryptography.hazmat._der import (
    DERReader, INTEGER, SEQUENCE, encode_der, encode_der_integer
)
from cryptography.hazmat.primitives import hashes

def decode_dss_signature(signature):
    with DERReader(signature).read_single_element(SEQUENCE) as seq:
        r = seq.read_element(INTEGER).as_integer()
        s = seq.read_element(INTEGER).as_integer()
        return r, s

def encode_dss_signature(r, s):
    return encode_der(
        SEQUENCE,
        encode_der(INTEGER, encode_der_integer(r)),
        encode_der(INTEGER, encode_der_integer(s)),
    )

class Prehashed(object):
    def __init__(self, algorithm):
        if not isinstance(algorithm, hashes.HashAlgorithm):
            raise TypeError("Expected instance of HashAlgorithm.")

self._algorithm = algorithm
        self._digest_size = algorithm.digest_size

digest_size = utils.read_only_property("_digest_size")

# This file is dual licensed under the terms of the Apache License, Version # 2.0, and the BSD License. See the LICENSE file in the root of this repository # for complete details. from __future__ import absolute_import, division, print_function from cryptography import utils from cryptography.hazmat._der import ( DERReader, INTEGER, SEQUENCE, encode_der, encode_der_integer ) from cryptography.hazmat.primitives import hashes def decode_dss_signature(signature): with DERReader(signature).read_single_element(SEQUENCE) as seq: r = seq.read_element(INTEGER).as_integer() s = seq.read_element(INTEGER).as_integer() return r, s def encode_dss_signature(r, s): return encode_der( SEQUENCE, encode_der(INTEGER, encode_der_integer(r)), encode_der(INTEGER, encode_der_integer(s)), ) class Prehashed(object): def __init__(self, algorithm): if not isinstance(algorithm, hashes.HashAlgorithm): raise TypeError("Expected instance of HashAlgorithm.") self._algorithm = algorithm self._digest_size = algorithm.digest_size digest_size = utils.read_only_property("_digest_size")