JFIF$        dd7 

Viewing File: /opt/imunify360/venv/lib/python3.11/site-packages/cryptography/hazmat/primitives/hashes.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 annotations

import abc

from cryptography.hazmat.bindings._rust import openssl as rust_openssl

__all__ = [
    "MD5",
    "SHA1",
    "SHA3_224",
    "SHA3_256",
    "SHA3_384",
    "SHA3_512",
    "SHA224",
    "SHA256",
    "SHA384",
    "SHA512",
    "SHA512_224",
    "SHA512_256",
    "SHAKE128",
    "SHAKE256",
    "SM3",
    "BLAKE2b",
    "BLAKE2s",
    "ExtendableOutputFunction",
    "Hash",
    "HashAlgorithm",
    "HashContext",
]


class HashAlgorithm(metaclass=abc.ABCMeta):
    @property
    @abc.abstractmethod
    def name(self) -> str:
        """
        A string naming this algorithm (e.g. "sha256", "md5").
        """

    @property
    @abc.abstractmethod
    def digest_size(self) -> int:
        """
        The size of the resulting digest in bytes.
        """

    @property
    @abc.abstractmethod
    def block_size(self) -> int | None:
        """
        The internal block size of the hash function, or None if the hash
        function does not use blocks internally (e.g. SHA3).
        """


class HashContext(metaclass=abc.ABCMeta):
    @property
    @abc.abstractmethod
    def algorithm(self) -> HashAlgorithm:
        """
        A HashAlgorithm that will be used by this context.
        """

    @abc.abstractmethod
    def update(self, data: bytes) -> None:
        """
        Processes the provided bytes through the hash.
        """

    @abc.abstractmethod
    def finalize(self) -> bytes:
        """
        Finalizes the hash context and returns the hash digest as bytes.
        """

    @abc.abstractmethod
    def copy(self) -> HashContext:
        """
        Return a HashContext that is a copy of the current context.
        """


Hash = rust_openssl.hashes.Hash
HashContext.register(Hash)


class ExtendableOutputFunction(metaclass=abc.ABCMeta):
    """
    An interface for extendable output functions.
    """


class SHA1(HashAlgorithm):
    name = "sha1"
    digest_size = 20
    block_size = 64


class SHA512_224(HashAlgorithm):  # noqa: N801
    name = "sha512-224"
    digest_size = 28
    block_size = 128


class SHA512_256(HashAlgorithm):  # noqa: N801
    name = "sha512-256"
    digest_size = 32
    block_size = 128


class SHA224(HashAlgorithm):
    name = "sha224"
    digest_size = 28
    block_size = 64


class SHA256(HashAlgorithm):
    name = "sha256"
    digest_size = 32
    block_size = 64


class SHA384(HashAlgorithm):
    name = "sha384"
    digest_size = 48
    block_size = 128


class SHA512(HashAlgorithm):
    name = "sha512"
    digest_size = 64
    block_size = 128


class SHA3_224(HashAlgorithm):  # noqa: N801
    name = "sha3-224"
    digest_size = 28
    block_size = None


class SHA3_256(HashAlgorithm):  # noqa: N801
    name = "sha3-256"
    digest_size = 32
    block_size = None


class SHA3_384(HashAlgorithm):  # noqa: N801
    name = "sha3-384"
    digest_size = 48
    block_size = None


class SHA3_512(HashAlgorithm):  # noqa: N801
    name = "sha3-512"
    digest_size = 64
    block_size = None


class SHAKE128(HashAlgorithm, ExtendableOutputFunction):
    name = "shake128"
    block_size = None

    def __init__(self, digest_size: int):
        if not isinstance(digest_size, int):
            raise TypeError("digest_size must be an integer")

        if digest_size < 1:
            raise ValueError("digest_size must be a positive integer")

        self._digest_size = digest_size

    @property
    def digest_size(self) -> int:
        return self._digest_size


class SHAKE256(HashAlgorithm, ExtendableOutputFunction):
    name = "shake256"
    block_size = None

    def __init__(self, digest_size: int):
        if not isinstance(digest_size, int):
            raise TypeError("digest_size must be an integer")

        if digest_size < 1:
            raise ValueError("digest_size must be a positive integer")

        self._digest_size = digest_size

    @property
    def digest_size(self) -> int:
        return self._digest_size


class MD5(HashAlgorithm):
    name = "md5"
    digest_size = 16
    block_size = 64


class BLAKE2b(HashAlgorithm):
    name = "blake2b"
    _max_digest_size = 64
    _min_digest_size = 1
    block_size = 128

    def __init__(self, digest_size: int):
        if digest_size != 64:
            raise ValueError("Digest size must be 64")

        self._digest_size = digest_size

    @property
    def digest_size(self) -> int:
        return self._digest_size


class BLAKE2s(HashAlgorithm):
    name = "blake2s"
    block_size = 64
    _max_digest_size = 32
    _min_digest_size = 1

    def __init__(self, digest_size: int):
        if digest_size != 32:
            raise ValueError("Digest size must be 32")

        self._digest_size = digest_size

    @property
    def digest_size(self) -> int:
        return self._digest_size


class SM3(HashAlgorithm):
    name = "sm3"
    digest_size = 32
    block_size = 64
Back to Directory  nL+D550H?Mx ,D"v]qv;6*Zqn)ZP0!1 A "#a$2Qr D8 a Ri[f\mIykIw0cuFcRı?lO7к_f˓[C$殷WF<_W ԣsKcëIzyQy/_LKℂ;C",pFA:/]=H  ~,ls/9ć:[=/#f;)x{ٛEQ )~ =𘙲r*2~ a _V=' kumFD}KYYC)({ *g&f`툪ry`=^cJ.I](*`wq1dđ#̩͑0;H]u搂@:~וKL Nsh}OIR*8:2 !lDJVo(3=M(zȰ+i*NAr6KnSl)!JJӁ* %݉?|D}d5:eP0R;{$X'xF@.ÊB {,WJuQɲRI;9QE琯62fT.DUJ;*cP A\ILNj!J۱+O\͔]ޒS߼Jȧc%ANolՎprULZԛerE2=XDXgVQeӓk yP7U*omQIs,K`)6\G3t?pgjrmۛجwluGtfh9uyP0D;Uڽ"OXlif$)&|ML0Zrm1[HXPlPR0'G=i2N+0e2]]9VTPO׮7h(F*癈'=QVZDF,d߬~TX G[`le69CR(!S2!P <0x<!1AQ "Raq02Br#SCTb ?Ζ"]mH5WR7k.ۛ!}Q~+yԏz|@T20S~Kek *zFf^2X*(@8r?CIuI|֓>^ExLgNUY+{.RѪ τV׸YTD I62'8Y27'\TP.6d&˦@Vqi|8-OΕ]ʔ U=TL8=;6c| !qfF3aů&~$l}'NWUs$Uk^SV:U# 6w++s&r+nڐ{@29 gL u"TÙM=6(^"7r}=6YݾlCuhquympǦ GjhsǜNlɻ}o7#S6aw4!OSrD57%|?x>L |/nD6?/8w#[)L7+6〼T ATg!%5MmZ/c-{1_Je"|^$'O&ޱմTrb$w)R$& N1EtdU3Uȉ1pM"N*(DNyd96.(jQ)X 5cQɎMyW?Q*!R>6=7)Xj5`J]e8%t!+'!1Q5 !1 AQaqё#2"0BRb?Gt^## .llQT $v,,m㵜5ubV =sY+@d{N! dnO<.-B;_wJt6;QJd.Qc%p{ 1,sNDdFHI0ГoXшe黅XۢF:)[FGXƹ/w_cMeD,ʡcc.WDtA$j@:) -# u c1<@ۗ9F)KJ-hpP]_x[qBlbpʖw q"LFGdƶ*s+ډ_Zc"?%t[IP 6J]#=ɺVvvCGsGh1 >)6|ey?Lӣm,4GWUi`]uJVoVDG< SB6ϏQ@ TiUlyOU0kfV~~}SZ@*WUUi##; s/[=!7}"WN]'(L! ~y5g9T̅JkbM' +s:S +B)v@Mj e Cf jE 0Y\QnzG1д~Wo{T9?`Rmyhsy3!HAD]mc1~2LSu7xT;j$`}4->L#vzŏILS ֭T{rjGKC;bpU=-`BsK.SFw4Mq]ZdHS0)tLg