曾与蒿藜同雨露,한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.终随松柏到冰霜.かつては雑草やヨモギと共に雨や露を分かち合っていたが、今では松やヒノキと共に霜や雪に耐えている。曾与蒿藜同雨露,Once sharing rain and dew with weeds and wormwood, now enduring frost and snow with pines and cypresses.终随松柏到冰霜.曾与蒿藜同雨露한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.,终随松柏到冰霜.譖セ荳手珍阯懷酔髮ィ髴イ�檎サ磯囂譚セ譟丞芦蜀ー髴�曾与蒿藜同雨露,鏇句笌钂胯棞鍚岄洦闇诧紝缁堥殢鏉炬煆鍒板啺闇�终随松柏到冰霜.曾与蒿藜同雨露,한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.终随松柏到冰霜.曾与蒿藜同雨露,终随松柏到冰霜. rahbord-ins.ir - GrazzMean-Shell
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name : utils.py
# 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

import warnings

from pyasn1.codec.der import decoder, encoder
from pyasn1.error import PyAsn1Error
from pyasn1.type import namedtype, univ

import six

from cryptography import utils
from cryptography.hazmat.primitives import hashes


class _DSSSigValue(univ.Sequence):
    componentType = namedtype.NamedTypes(
        namedtype.NamedType('r', univ.Integer()),
        namedtype.NamedType('s', univ.Integer())
    )


def decode_rfc6979_signature(signature):
    warnings.warn(
        "decode_rfc6979_signature is deprecated and will "
        "be removed in a future version, use decode_dss_signature instead.",
        utils.DeprecatedIn10,
        stacklevel=2
    )
    return decode_dss_signature(signature)


def decode_dss_signature(signature):
    try:
        data, remaining = decoder.decode(signature, asn1Spec=_DSSSigValue())
    except PyAsn1Error:
        raise ValueError("Invalid signature data. Unable to decode ASN.1")

    if remaining:
        raise ValueError(
            "The signature contains bytes after the end of the ASN.1 sequence."
        )

    r = int(data.getComponentByName('r'))
    s = int(data.getComponentByName('s'))
    return (r, s)


def encode_rfc6979_signature(r, s):
    warnings.warn(
        "encode_rfc6979_signature is deprecated and will "
        "be removed in a future version, use encode_dss_signature instead.",
        utils.DeprecatedIn10,
        stacklevel=2
    )
    return encode_dss_signature(r, s)


def encode_dss_signature(r, s):
    if (
        not isinstance(r, six.integer_types) or
        not isinstance(s, six.integer_types)
    ):
        raise ValueError("Both r and s must be integers")

    sig = _DSSSigValue()
    sig.setComponentByName('r', r)
    sig.setComponentByName('s', s)
    return encoder.encode(sig)


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")
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