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d�ZdS)rzpBase class for defining a single DER object.

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                  payload : byte string
                    The initial payload of the object (that it,
                    the content octets).
                    If not specified, the payload is empty.

                  implicit : integer or byte
                    The IMPLICIT tag number (< 0x1F) to use for the encoded object.
                    It overrides the universal tag *asn1Id*.
                    It cannot be combined with the ``explicit`` parameter.
                    By default, there is no IMPLICIT tag.

                  constructed : bool
                    True when the ASN.1 type is *constructed*.
                    False when it is *primitive* (default).

                  explicit : integer or byte
                    The EXPLICIT tag number (< 0x1F) to use for the encoded object.
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Z�.�-r")Nr"NFN�F)r5r6r7r8r!r@�staticmethodrNrRrVr\rYr9r"rrrQs�������	�	�
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	�	�	�	�	�.	Z�	Z�	Z�	Z�	Zr"rc�.�eZdZdZd	d�Zd�Zd
d�Zd�ZdS)r	a�Class to model a DER INTEGER.

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          >>> from Crypto.Util.asn1 import DerInteger
          >>> from binascii import hexlify, unhexlify
          >>> int_der = DerInteger(9)
          >>> print hexlify(int_der.encode())

        which will show ``020109``, the DER encoding of 9.

        And for decoding::

          >>> s = unhexlify(b'020109')
          >>> try:
          >>>   int_der = DerInteger()
          >>>   int_der.decode(s)
          >>>   print int_der.value
          >>> except ValueError:
          >>>   print "Not a valid DER INTEGER"

        the output will be ``9``.

        :ivar value: The integer value
        :vartype value: integer
        rNc�R�t�|dd|d|��||_dS)aUInitialize the DER object as an INTEGER.

                :Parameters:
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                �r"FN�rr!�value�rrgrDrFs    rr!zDerInteger.__init__#s4���"�"�4��s�H�#(�(�4�4�4�"��
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                binary string.r"T�r=ri�����)rgrAr�intrrR)r�numbers  rrRzDerInteger.encode3s������"���!�#'��F�S�L�(9�(9�#:�#:�T�\�#I�D�L��f�+�+�+�+��+�+�+�+�+�'+�D�z�z�D�L�'@����v�,�,�,�,��,�,�,�,�,���q�L�F�
!�!�'�'��-�-�-r"Fc�<�t�|||���S)aDecode a DER-encoded INTEGER, and re-initializes this
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                �r[�rr\�rrZr[s   rr\zDerInteger.decodeBs��!�'�'��k�&�'�I�I�Ir"c�0�t�|||��|rzt|j��dkrt	d���t|j��dkr;tjd|jdd���ddkrt	d���d|_d}|jD]4}|xjd	zc_|xjt|��z
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z}�5|jr/t|jd��dzr|xj|zc_dSdSdS)z*Decode a complete DER INTEGER from a file.rz/Invalid encoding for DER INTEGER: empty payloadrez>HNr=z.Invalid encoding for DER INTEGER: leading zeror3�rk)	rrYr*rAr-�struct�unpackrgr)rrTr[�bits�is     rrYzDerInteger._decodeFromStreamOs4���+�+�D�!�V�<�<�<��[��4�<�(�(�A�-�-�(�)Z�[�[�[��4�<�(�(�A�-�-�&�-��d�l�SU�TU�SU�FV�2W�2W�XY�2Z�]a�2a�2a�(�)Y�Z�Z�Z���
�������A��J�J�#�%�J�J��J�J�$�q�'�'�)�J�J��Q�J�D�D��<�'�D���a��$9�$9�D�$@�'��J�J�$�&�J�J�J�J�'�'�'�'r")rNNra�r5r6r7r8r!rRr\rYr9r"rr	r	sh������	�	�6	#�	#�	#�	#� 
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	.�
	.�	J�	J�	J�	J�	'�	'�	'�	'�	'r"r	c�.�eZdZdZdd�Zd�Zd	d�Zd�ZdS)
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    An example of encoding is::

    >>> from Crypto.Util.asn1 import DerBoolean
    >>> bool_der = DerBoolean(True)
    >>> print(bool_der.encode().hex())

    which will show ``0101ff``, the DER encoding of True.

    And for decoding::

    >>> s = bytes.fromhex('0101ff')
    >>> try:
    >>>   bool_der = DerBoolean()
    >>>   bool_der.decode(s)
    >>>   print(bool_der.value)
    >>> except ValueError:
    >>>   print "Not a valid DER BOOLEAN"

    the output will be ``True``.

    :ivar value: The boolean value
    :vartype value: boolean
    FNc�R�t�|dd|d|��||_dS)a�Initialize the DER object as a BOOLEAN.

        Args:
          value (boolean):
            The value of the boolean. Default is False.

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            It overrides the universal tag for BOOLEAN (1).
            It cannot be combined with the ``explicit`` parameter.
            By default, there is no IMPLICIT tag.

          explicit (integer or byte):
            The EXPLICIT tag number (< 0x1F) to use for the encoded object.
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        r3r"FNrfrhs    rr!zDerBoolean.__init__�s-��&	���4��s�H�e�X�F�F�F���
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r"c�V�|jrdnd|_t�|��S)z9Return the DER BOOLEAN, fully encoded as a binary string.����rgrArrRr%s rrRzDerBoolean.encode�s*��#'�*�9�w�w�'�������%�%�%r"c�:�t�|||��S)z�Decode a DER-encoded BOOLEAN, and re-initializes this object with it.

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        rprqs   rr\zDerBoolean.decode�s������k�6�:�:�:r"c�B�t�|||��t|j��dkrt	d���t|jd��dkr	d|_dSt|jd��dkr	d|_dSt	d���)	z)Decode a DER-encoded BOOLEAN from a file.r3z7Invalid encoding for DER BOOLEAN: payload is not 1 byterFrjTzInvalid payload for DER BOOLEANN)rrYr*rAr-rrg�rrTr[s   rrYzDerBoolean._decodeFromStream�s���	�#�#�D�!�V�4�4�4��t�|����!�!��V�W�W�W����Q�� � �A�%�%��D�J�J�J�
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"�
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;�@�@�@�@�@r"r
c�z�eZdZdZdd�Zd�Zd�Zd�Zd�Zd�Z	d	�Z
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�Zdd�Zdd�Zd�Zdd�Zd�ZdS)r
a�Class to model a DER SEQUENCE.

        This object behaves like a dynamic Python sequence.

        Sub-elements that are INTEGERs behave like Python integers.

        Any other sub-element is a binary string encoded as a complete DER
        sub-element (TLV).

        An example of encoding is:

          >>> from Crypto.Util.asn1 import DerSequence, DerInteger
          >>> from binascii import hexlify, unhexlify
          >>> obj_der = unhexlify('070102')
          >>> seq_der = DerSequence([4])
          >>> seq_der.append(9)
          >>> seq_der.append(obj_der.encode())
          >>> print hexlify(seq_der.encode())

        which will show ``3009020104020109070102``, the DER encoding of the
        sequence containing ``4``, ``9``, and the object with payload ``02``.

        For decoding:

          >>> s = unhexlify(b'3009020104020109070102')
          >>> try:
          >>>   seq_der = DerSequence()
          >>>   seq_der.decode(s)
          >>>   print len(seq_der)
          >>>   print seq_der[0]
          >>>   print seq_der[:]
          >>> except ValueError:
          >>>   print "Not a valid DER SEQUENCE"

        the output will be::

          3
          4
          [4, 9, b'']

        Nc�h�t�|dd|d|��|�	g|_dS||_dS)aCInitialize the DER object as a SEQUENCE.

                :Parameters:
                  startSeq : Python sequence
                    A sequence whose element are either integers or
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                  implicit : integer or byte
                    The IMPLICIT tag number (< 0x1F) to use for the encoded object.
                    It overrides the universal tag for SEQUENCE (16).
                    It cannot be combined with the ``explicit`` parameter.
                    By default, there is no IMPLICIT tag.

                  explicit : integer or byte
                    The EXPLICIT tag number (< 0x1F) to use for the encoded object.
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                �r"TN)rr!�_seq)r�startSeqrDrFs    rr!zDerSequence.__init__�s>��(�"�"�4��s�H�d�H�M�M�M��#� "�D�I�I�I� (�D�I�I�Ir"c��|j|=dSr$�r��r�ns  r�__delitem__zDerSequence.__delitem__s���I�a�L�L�Lr"c��|j|Sr$r�r�s  r�__getitem__zDerSequence.__getitem__s���y��|�#r"c��||j|<dSr$r�)r�keyrgs   r�__setitem__zDerSequence.__setitem__s��!&��	�#���r"c��||j||�<dSr$r�)rrw�j�sequences    r�__setslice__zDerSequence.__setslice__	s��!)��	�!�A�#���r"c��|j||�=dSr$r��rrwr�s   r�__delslice__zDerSequence.__delslice__s���I�a��c�N�N�Nr"c�X�|jtd|��td|���Sr)r��maxr�s   r�__getslice__zDerSequence.__getslice__s$���y��Q����3�q�!�9�9�!4�5�5r"c�*�t|j��Sr$�r*r�r%s r�__len__zDerSequence.__len__s���4�9�~�~�%r"c�:�|j�|��|Sr$�r��append�r�items  r�__iadd__zDerSequence.__iadd__����	� � ��&�&�&��r"c�:�|j�|��|Sr$r�r�s  rr�zDerSequence.appendr�r"c�<�|j�||��|Sr$)r��insert)r�indexr�s   rr�zDerSequence.inserts���	� � ���-�-�-��r"Tc�H���fd�|jD��}t|��S)z�Return the number of items in this sequence that are
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                c�4��g|]}t|����|��Sr9)r)�.0rrs  �r�
<listcomp>z'DerSequence.hasInts.<locals>.<listcomp>*s)���R�R�R�q��A�?P�1Q�1Q�R��R�R�Rr")r�r*)rr�itemss ` r�hasIntszDerSequence.hasInts!s-���S�R�R�R�D�I�R�R�R���5�z�z�!r"c�f�|jo*|�|��t|j��kS)a�Return ``True`` if all items in this sequence are integers
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                    causes the method to return ``False``.)r�r�r*)rrs  r�hasOnlyIntszDerSequence.hasOnlyInts-s+���y�V�T�\�\�2C�%D�%D��D�I���%V�Vr"c�Z�d|_|jD]�}t|��r|xj|z
c_�"t|��r0|xjt	|�����z
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c_��t�|��S)z�Return this DER SEQUENCE, fully encoded as a
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                r")rAr�rrr	rRrr�s  rrRzDerSequence.encode:s��� #��� �I�6�6�D�"�4�(�(�6�����,����#�D�)�)�6����
�4�(8�(8�(?�(?�(A�(A�A����������
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�5���� �'�'��-�-�-r"Fc��||_t�|||���}|r#|���st	d���|S)a9Decode a complete DER SEQUENCE, and re-initializes this
                object with it.

                Args:
                  der_encoded (byte string):
                    A complete SEQUENCE DER element.
                  nr_elements (None or integer or list of integers):
                    The number of members the SEQUENCE can have
                  only_ints_expected (boolean):
                    Whether the SEQUENCE is expected to contain only integers.
                  strict (boolean):
                    Whether decoding must check for strict DER compliancy.

                Raises:
                  ValueError: in case of parsing errors.

                DER INTEGERs are decoded into Python integers. Any other DER
                element is not decoded. Its validity is not checked.
                rozSome members are not INTEGERs)�_nr_elementsrr\r�r-)rrZr[�nr_elements�only_ints_expectedr0s      rr\zDerSequence.decodeLsW��*%0��!�"�)�)�$��F�)�K�K��%�F�d�.>�.>�.@�.@�F�$�%D�E�E�E��
r"c�V�g|_t�|||��t|j��}|���dkr�|���t��}|�||��|jdkr-|j�|�	����nXt��}|�	��}|�||���|j�|j��|���dk��d}|j
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k}YnwxYw|s$t!dt|j��z���dS)z+Decode a complete DER SEQUENCE from a file.rreroTNz1Unexpected number of members (%d) in the sequence)r�rrYrrAr+r&r?r�r(r	r\rgr�r*rr-)rrTr[r_�der�derInt�data�oks        rrYzDerSequence._decodeFromStreamis�����	��+�+�D�!�V�<�<�<� ���-�-���&�&�(�(�1�,�,��N�N�$�$�$�#�+�+�C��)�)�!�V�4�4�4��~��-�-��	�(�(��)>�)>�)@�)@�A�A�A�A�!+���� �4�4�6�6���
�
�d�6�
�:�:�:��	�(�(���6�6�6��&�&�(�(�1�,�,����$�0�A� ���^�^�t�/@�@����$�A�A�A� ���^�^�t�/@�@����A�����J�$�&8�:=�d�i�.�.�&I�J�J�J�J�Js�:E�'F�?F)NNN)T)FNF)r5r6r7r8r!r�r�r�r�r�r�r�r�r�r�r�r�rRr\rYr9r"rr
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�s,������(	�(	�T	)�	)�	)�	)�8	!�	!�	!�	$�	$�	$�	'�	'�	'�	*�	*�	*�	#�	#�	#�	6�	6�	6�	&�	&�	&�	�	�	�	�	�	�	�	�	�
	"�
	"�
	"�
	"�	W�	W�	W�	W�	.�	.�	.�$	�	�	�	�:"	J�"	J�"	J�"	J�"	Jr"r
c��eZdZdZdd�ZdS)ra�Class to model a DER OCTET STRING.

    An example of encoding is:

    >>> from Crypto.Util.asn1 import DerOctetString
    >>> from binascii import hexlify, unhexlify
    >>> os_der = DerOctetString(b'\xaa')
    >>> os_der.payload += b'\xbb'
    >>> print hexlify(os_der.encode())

    which will show ``0402aabb``, the DER encoding for the byte string
    ``b'\xAA\xBB'``.

    For decoding:

    >>> s = unhexlify(b'0402aabb')
    >>> try:
    >>>   os_der = DerOctetString()
    >>>   os_der.decode(s)
    >>>   print hexlify(os_der.payload)
    >>> except ValueError:
    >>>   print "Not a valid DER OCTET STRING"

    the output will be ``aabb``.

    :ivar payload: The content of the string
    :vartype payload: byte string
    r"Nc�B�t�|d||d��dS)ahInitialize the DER object as an OCTET STRING.

        :Parameters:
          value : byte string
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        �FN�rr!)rrgrDs   rr!zDerOctetString.__init__�s&��	���4��u�h��>�>�>�>�>r")r"N�r5r6r7r8r!r9r"rrr�s2��������:?�?�?�?�?�?r"rc��eZdZdZd�ZdS)rz"Class to model a DER NULL element.c�B�t�|dddd��dS)z$Initialize the DER object as a NULL.�r"NFr�r%s rr!zDerNull.__init__�s&��	���4��s�D�%�8�8�8�8�8r"Nr�r9r"rrr�s)������,�,�9�9�9�9�9r"rc�.�eZdZdZd	d�Zd�Zd
d�Zd�ZdS)ra(Class to model a DER OBJECT ID.

    An example of encoding is:

    >>> from Crypto.Util.asn1 import DerObjectId
    >>> from binascii import hexlify, unhexlify
    >>> oid_der = DerObjectId("1.2")
    >>> oid_der.value += ".840.113549.1.1.1"
    >>> print hexlify(oid_der.encode())

    which will show ``06092a864886f70d010101``, the DER encoding for the
    RSA Object Identifier ``1.2.840.113549.1.1.1``.

    For decoding:

    >>> s = unhexlify(b'06092a864886f70d010101')
    >>> try:
    >>>   oid_der = DerObjectId()
    >>>   oid_der.decode(s)
    >>>   print oid_der.value
    >>> except ValueError:
    >>>   print "Not a valid DER OBJECT ID"

    the output will be ``1.2.840.113549.1.1.1``.

    :ivar value: The Object ID (OID), a dot separated list of integers
    :vartype value: string
    �Nc�R�t�|dd|d|��||_dS)a�Initialize the DER object as an OBJECT ID.

        :Parameters:
          value : string
            The initial Object Identifier (e.g. "1.2.0.0.6.2").
          implicit : integer
            The IMPLICIT tag to use for the encoded object.
            It overrides the universal tag for OBJECT ID (6).
          explicit : integer
            The EXPLICIT tag to use for the encoded object.
        �r"FNrfrhs    rr!zDerObjectId.__init__�s-��	���4��s�H�e�X�F�F�F���
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���x�x� E� E�(�8�2D�2D� E� E� E�F�F�������%�%�%r"Fc�:�t�|||��S)abDecode a complete DER OBJECT ID, and re-initializes this
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    >>> bs_der = DerBitString(b'\xAA')
    >>> bs_der.value += b'\xBB'
    >>> print(bs_der.encode().hex())

    which will show ``030300aabb``, the DER encoding for the bit string
    ``b'\xAA\xBB'``.

    For decoding:

    >>> s = bytes.fromhex('030300aabb')
    >>> try:
    >>>   bs_der = DerBitString()
    >>>   bs_der.decode(s)
    >>>   print(bs_der.value.hex())
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    r"Nc��t�|dd|d|��t|t��r|���|_dS||_dS)a�Initialize the DER object as a BIT STRING.

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    >>> so_der.add(6)
    >>> print hexlify(so_der.encode())

    which will show ``3109020104020105020106``, the DER encoding
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    For decoding:

    >>> s = unhexlify(b'3109020104020105020106')
    >>> try:
    >>>   so_der = DerSetOf()
    >>>   so_der.decode(s)
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    Nc��t�|dd|d��g|_d|_|r|D]}|�|���dSdS)a9Initialize the DER object as a SET OF.

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        rprqs   rr\zDerSetOf.decode�s�� ����k�6�:�:�:r"c��g|_t�|||��t|j��}d}|���dk�r|���t��}|�||��|dkr|j}n||jkrtd���|dkr-|j�	|�
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�a�3�3�5�5�v�>�>�>��	� � ���.�.�.�'��� � �1�$�$�$�$�$�$r"c��g}|jD]t}t|��r"t|�����}n,t	|t
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