]j= x d dl mZ d dlmZmZmZ d dlmZ ddlm Z m
Z
ddl m Z m Z m
Z
G d de Zd Zd
S ) ) unhexlify)bordtobytesis_bytes)get_random_bytes ) cSHAKE128SHA3_256)_bytepad _encode_str
_right_encodec < e Zd ZdZd Zd Zd Zd Zd Zd Z d Z
d S )
KMAC_Hashz[A KMAC hash object.
Do not instantiate directly.
Use the :func:`new` function.
c d|z | _ || _ d | _ t t t | | }| ||d | _ |r | j | d S d S )Nz2.16.840.1.101.3.4.2.s KMAC) oid digest_size_macr r r _new_cshakeupdate) selfdatakeymac_lencustom oid_variantcshakerate partial_newXs u/builddir/build/BUILD/imunify360-venv-2.6.3/opt/imunify360/venv/lib64/python3.11/site-packages/Crypto/Hash/KMAC128.py__init__zKMAC_Hash.__init__. s +[8" GCLL 9 94@@ {{<AA & L % % % % % & & c f | j rt d | j | | S )zAuthenticate the next chunk of message.
Args:
data (bytes/bytearray/memoryview): The next chunk of the message to
authenticate.
z8You can only call 'digest' or 'hexdigest' on this object)r TypeErrorr r )r r s r r zKMAC_Hash.update= s9 9 X VWW W D!!! r" c | j sS| j t | j dz | j | j | _ | j S )zReturn the **binary** (non-printable) MAC tag of the message.
:return: The MAC tag. Binary form.
:rtype: byte string
)r r r r
r readr s r digestzKMAC_Hash.digestK sV y < L
d.>.B C C D D D ))$*:;;DIyr" c ~ d d t | D S )zReturn the **printable** MAC tag of the message.
:return: The MAC tag. Hexadecimal encoded.
:rtype: string
c 2 g | ]}d t | z S )z%02x)r ).0xs r
<listcomp>z'KMAC_Hash.hexdigest.<locals>.<listcomp>_ s# GGGQa(GGGr" )jointupler) r( s r hexdigestzKMAC_Hash.hexdigestX s5 wwGG%
2F2FGGGHHHr" c t d }t j ||z }t j || z }| | k rt d dS )a` Verify that a given **binary** MAC (computed by another party)
is valid.
Args:
mac_tag (bytes/bytearray/memoryview): the expected MAC of the message.
Raises:
ValueError: if the MAC does not match. It means that the message
has been tampered with or that the MAC key is incorrect.
zMAC check failedN)r r
newr)
ValueError)r mac_tagsecretmac1mac2s r verifyzKMAC_Hash.verifya ss ""%%|FW ,--|FT[[]] 233 ;;==DKKMM ) ) /00 0 * )r" c d | t t | dS )an Verify that a given **printable** MAC (computed by another party)
is valid.
Args:
hex_mac_tag (string): the expected MAC of the message, as a hexadecimal string.
Raises:
ValueError: if the MAC does not match. It means that the message
has been tampered with or that the MAC key is incorrect.
N)r; r r )r hex_mac_tags r hexverifyzKMAC_Hash.hexverifyu s,
Igk 2 23344444r" c 6 d|vr
| j |d< t di |S )zNReturn a new instance of a KMAC hash object.
See :func:`new`.
r )r r5 )r kwargss r r5 z
KMAC_Hash.new s,
F " " $ 0F9 }}V}} r" N) __name__
__module__ __qualname____doc__r! r r) r2 r; r> r5 r@ r" r r r ( s
&
&
& I I I1 1 1( 5 5 5 r" r c | dd }t | st d t | dk rt d | dd }| dd }|d k rt d
| d d }| r t d
t | z t
||||dt d S )a Create a new KMAC128 object.
Args:
key (bytes/bytearray/memoryview):
The key to use to compute the MAC.
It must be at least 128 bits long (16 bytes).
data (bytes/bytearray/memoryview):
Optional. The very first chunk of the message to authenticate.
It is equivalent to an early call to :meth:`KMAC_Hash.update`.
mac_len (integer):
Optional. The size of the authentication tag, in bytes.
Default is 64. Minimum is 8.
custom (bytes/bytearray/memoryview):
Optional. A customization byte string (``S`` in SP 800-185).
Returns:
A :class:`KMAC_Hash` hash object
r Nz You must pass a key to KMAC128r4 z1The key must be at least 128 bits long (16 bytes)r r @ r& z!'mac_len' must be 8 bytes or morer r" zUnknown parameters: 19 )popr r$ lenr6 strr r )rA r r r r s r r5 r5 s ( **UD
!
!C C== :8999
3xx"}}LMMM ::fd # #DjjB''G{{<===
ZZ#
&
&F
>.V<=== T3y# F FFr" N)binasciir Crypto.Util.py3compatr r r
Crypto.Randomr r+ r r
r r r
objectr r5 r@ r" r <module>rQ s > 9 9 9 9 9 9 9 9 9 9 * * * * * * ! ! ! ! ! ! ! ! ; ; ; ; ; ; ; ; ; ;c c c c c c c c L%G %G %G %G %Gr"