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ASN.1 type classes for various algorithms using in various aspects of public
key cryptography. Exports the following items:
- AlgorithmIdentifier()
- AnyAlgorithmIdentifier()
- DigestAlgorithm()
- DigestInfo()
- DSASignature()
- EncryptionAlgorithm()
- HmacAlgorithm()
- KdfAlgorithm()
- Pkcs5MacAlgorithm()
- SignedDigestAlgorithm()
Other type classes are defined that help compose the types listed above.
� )�unicode_literals�division�absolute_import�print_function� )�unwrap)�
fill_width)�int_from_bytes� int_to_bytes)�Any�Choice�Integer�Null�ObjectIdentifier� OctetString�Sequence�Voidc @ s" e Zd ZdefdeddifgZdS )�AlgorithmIdentifier� algorithm�
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Various structures based on AlgorithmIdentifier require that the parameters
field be core.Null() for certain OIDs. This mixin ensures that happens.
z1.2.840.113549.1.1.1z1.2.840.113549.1.1.11z1.2.840.113549.1.1.12z1.2.840.113549.1.1.13z1.2.840.113549.1.1.14z
1.3.14.3.2.26z2.16.840.1.101.3.4.2.4z2.16.840.1.101.3.4.2.1z2.16.840.1.101.3.4.2.2z2.16.840.1.101.3.4.2.3c C s@ | j dkr(| d j}|| jkr(| j| S | d j| jkr<tS d S )Nr r )r r )� _oid_pair�native�
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z%_ForceNullParameters._parameters_specr c sR t t| �j||�}|dkr |S | d j| jkr2|S | d jtkrD|S t� | d< |S )Nr r )�superr � __setitem__r! r" � __class__r r )r# �key�value�res)r' r r r& _ s
z _ForceNullParameters.__setitem__)
r r r �__doc__�setr" r$ Z_spec_callbacksr& �
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1.3.14.3.2.10z1.2.840.113549.2.7z1.2.840.113549.2.8z1.2.840.113549.2.9z1.2.840.113549.2.10z1.2.840.113549.2.11z1.2.840.113549.2.12z1.2.840.113549.2.13N)r r r �_mapr r r r r. k s r. c @ s" e Zd ZdefdeddifgZdS )�
HmacAlgorithmr r r TN)r r r r. r r r r r r r7 x s r7 c
@ s$ e Zd Zddddddddd d
� Zd S ) �DigestAlgorithmId�md2�md5r/ r0 r1 r2 r3 r4 r5 ) z1.2.840.113549.2.2z1.2.840.113549.2.5z
1.3.14.3.2.26z2.16.840.1.101.3.4.2.4z2.16.840.1.101.3.4.2.1z2.16.840.1.101.3.4.2.2z2.16.840.1.101.3.4.2.3z2.16.840.1.101.3.4.2.5z2.16.840.1.101.3.4.2.6N)r r r r6 r r r r r8 s r8 c @ s" e Zd ZdefdeddifgZdS )�DigestAlgorithmr r r TN)r r r r8 r r r r r r r; � s r; c @ s e Zd ZdefdefgZdS )�
DigestInfoZdigest_algorithmZdigestN)r r r r; r r r r r r r< � s r< c @ s e Zd ZddiZdS )�MaskGenAlgorithmIdz1.2.840.113549.1.1.8�mgf1N)r r r r6 r r r r r= � s r= c @ s. e Zd ZdefdeddifgZdZdeiZdS )�MaskGenAlgorithmr r r Tr> N)r r ) r r r r= r r r r; r r r r r r? � s r? c @ s e Zd ZddiZdS )� TrailerFieldr �trailer_field_bcN)r r r r6 r r r r r@ � s r@ c @ sV e Zd Zdedddid�fdeddddid �d�fd
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eddd�fgZdS )�RSASSAPSSParams�hash_algorithmr r r/ )�explicit�default�mask_gen_algorithmr r> )r r Z salt_length� � Z
trailer_field� rA N)r r r r; r? r
r@ r r r r r rB � s" rB c @ sn e Zd Zdddddddddddd d d d
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rsassa_pss�sha1_dsa�
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sha1_ecdsa� sha224_ecdsa� sha256_ecdsa� sha384_ecdsa� sha512_ecdsa�rsassa_pkcs1v15�dsa�ecdsa)z 1.3.14.3.2.3z
1.3.14.3.2.29z1.3.14.7.2.3.1z1.2.840.113549.1.1.2z1.2.840.113549.1.1.4z1.2.840.113549.1.1.5z1.2.840.113549.1.1.14z1.2.840.113549.1.1.11z1.2.840.113549.1.1.12z1.2.840.113549.1.1.13z1.2.840.113549.1.1.10z1.2.840.10040.4.3z
1.3.14.3.2.13z
1.3.14.3.2.27z2.16.840.1.101.3.4.3.1z2.16.840.1.101.3.4.3.2z1.2.840.10045.4.1z1.2.840.10045.4.3.1z1.2.840.10045.4.3.2z1.2.840.10045.4.3.3z1.2.840.10045.4.3.4z1.2.840.113549.1.1.1z1.2.840.10040.4.1z1.2.840.10045.4z1.2.840.10040.4.1z1.2.840.10045.4z1.2.840.113549.1.1.2z1.2.840.113549.1.1.4z1.2.840.113549.1.1.1z1.2.840.113549.1.1.10z1.2.840.10040.4.3z1.2.840.10045.4.1z1.2.840.113549.1.1.5z2.16.840.1.101.3.4.3.1z1.2.840.10045.4.3.1z1.2.840.113549.1.1.14z2.16.840.1.101.3.4.3.2z1.2.840.10045.4.3.2z1.2.840.113549.1.1.11z1.2.840.10045.4.3.3z1.2.840.113549.1.1.12z1.2.840.10045.4.3.4z1.2.840.113549.1.1.13)r\ r] rM rK r[ rR rS rV rL rT rW rN rU rX rO rY rP rZ rQ N)r r r r6 Z _reverse_mapr r r r rJ � sV rJ c @ sF e Zd ZdefdeddifgZd ZdeiZe dd� �Z
e dd � �Z d
S ) �SignedDigestAlgorithmr r r TrR c C sX | d j }dddddddddddddddddddd�}||krF|| S ttd|���dS ) zx
:return:
A unicode string of "rsassa_pkcs1v15", "rsassa_pss", "dsa" or
"ecdsa"
r r[ rR r\ r] )rM rK rL rN rO rP rQ r[ rR rS rT rU r\ rV rW rX rY rZ r] z>
Signature algorithm not known for %s
N)r �
ValueErrorr )r# r �algo_mapr r r �signature_algo s2
z$SignedDigestAlgorithm.signature_algoc C sj | d j }dddddddddddddddd �}||kr>|| S |d
krX| d d d j S ttd
|���dS )z�
:return:
A unicode string of "md2", "md5", "sha1", "sha224", "sha256",
"sha384", "sha512", "sha512_224", "sha512_256"
r r9 r: r/ r0 r1 r2 r3 )rM rK rL rN rO rP rQ rS rT rU rV rW rX rY rZ rR r rC z9
Hash algorithm not known for %s
N)r r_ r )r# r r` r r r � hash_algoD s.
z SignedDigestAlgorithm.hash_algoN)r r ) r r r rJ r r r rB r �propertyra rb r r r r r^ s )r^ c @ s e Zd ZdefdefgZdS )�
Pbkdf2SaltZ specified� other_sourceN)r r r r r Z
_alternativesr r r r rd m s rd c @ s8 e Zd Zdefdefdeddifdeddd iifgZd
S ) � Pbkdf2Params�salt�iteration_count�
key_lengthr T�prfrE r r/ N)r r r rd r
r7 r r r r r rf t s rf c @ s e Zd ZddiZdS )�KdfAlgorithmIdz1.2.840.113549.1.5.12�pbkdf2N)r r r r6 r r r r rk } s rk c @ s. e Zd ZdefdeddifgZdZdeiZdS )� KdfAlgorithmr r r Trl N)r r ) r r r rk r r r rf r r r r r rm � s rm c @ s, e Zd ZdZdefdefdeddifgZdS )� DHParameterszn
Original Name: DHParameter
Source: ftp://ftp.rsasecurity.com/pub/pkcs/ascii/pkcs-3.asc section 9
�p�gZprivate_value_lengthr TN)r r r r+ r
r r r r r rn � s rn c @ s e Zd ZddiZdS )�KeyExchangeAlgorithmIdz1.2.840.113549.1.3.1�dhN)r r r r6 r r r r rq � s rq c @ s. e Zd ZdefdeddifgZdZdeiZdS )�KeyExchangeAlgorithmr r r Trr N)r r ) r r r rq r r r rn r r r r r rs � s rs c @ s" e Zd ZdeddifdefgZdS )� Rc2Params�rc2_parameter_versionr T�ivN)r r r r
r r r r r r rt � s rt c @ s e Zd ZddiZdS )�Rc5ParamVersion� zv1-0N)r r r r6 r r r r rw � s rw c @ s. e Zd ZdefdefdefdeddifgZdS )� Rc5Params�version�rounds�block_size_in_bitsrv r TN)r r r rw r
r r r r r r ry � s ry c @ s e Zd ZdefdefgZdS )� Pbes1Paramsrg �
iterationsN)r r r r r
r r r r r r} � s r} c @ s e Zd ZddiZdS )�PSourceAlgorithmIdz1.2.840.113549.1.1.9� p_specifiedN)r r r r6 r r r r r � s r c @ s. e Zd ZdefdeddifgZdZdeiZdS )�PSourceAlgorithmr r r Tr� N)r r ) r r r r r r r r r r r r r r� � s r� c @ sN e Zd Zdedddid�fdeddddid �d�fd
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d �d�fgZdS )�RSAESOAEPParamsrC r r r/ )rD rE rF r r> )r r Zp_source_algorithmrG r� � N)r r r r; r? r� r r r r r r� � s r� c @ s4 e Zd ZdZdefdefgZedd� �Zdd� ZdS ) � DSASignaturea
An ASN.1 class for translating between the OS crypto library's
representation of an (EC)DSA signature and the ASN.1 structure that is part
of various RFCs.
Original Name: DSS-Sig-Value
Source: https://tools.ietf.org/html/rfc3279#section-2.2.2
�r�sc C s> t |dt|�d � �}t |t|�d d� �}| ||d��S )a
Reads a signature from a byte string encoding accordint to IEEE P1363,
which is used by Microsoft's BCryptSignHash() function.
:param data:
A byte string from BCryptSignHash()
:return:
A DSASignature object
r rG N)r� r� )r �len)�cls�datar� r� r r r �
from_p1363
s
zDSASignature.from_p1363c C sJ t | d j�}t | d j�}tt|�t|��}t||�}t||�}|| S )z�
Dumps a signature to a byte string compatible with Microsoft's
BCryptVerifySignature() function.
:return:
A byte string compatible with BCryptVerifySignature()
r� r� )r
r �maxr� r )r# Zr_bytesZs_bytesZint_byte_lengthr r r �to_p1363 s
zDSASignature.to_p1363N) r r r r+ r
r � classmethodr� r� r r r r r� � s
r� c , @ sh e Zd Zddddddddd d
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aes128_ecb�
aes128_cbc�
aes128_ofbZ
aes128_cfbZ aes128_wrapZ
aes128_gcmZ
aes128_ccmZaes128_wrap_padZ
aes192_ecb�
aes192_cbc�
aes192_ofbZ
aes192_cfbZ aes192_wrapZ
aes192_gcmZ
aes192_ccmZaes192_wrap_padZ
aes256_ecb�
aes256_cbc�
aes256_ofbZ
aes256_cfbZ aes256_wrapZ
aes256_gcmZ
aes256_ccmZaes256_wrap_pad�pbes2�
pbes1_md2_des�
pbes1_md5_des�
pbes1_md2_rc2�
pbes1_md5_rc2�pbes1_sha1_des�pbes1_sha1_rc2�pkcs12_sha1_rc4_128�pkcs12_sha1_rc4_40�pkcs12_sha1_tripledes_3key�pkcs12_sha1_tripledes_2key�pkcs12_sha1_rc2_128�pkcs12_sha1_rc2_40Zrsaes_pkcs1v15�
rsaes_oaep)+z 1.3.14.3.2.7z1.2.840.113549.3.7z1.2.840.113549.3.2z1.2.840.113549.3.9z2.16.840.1.101.3.4.1.1z2.16.840.1.101.3.4.1.2z2.16.840.1.101.3.4.1.3z2.16.840.1.101.3.4.1.4z2.16.840.1.101.3.4.1.5z2.16.840.1.101.3.4.1.6z2.16.840.1.101.3.4.1.7z2.16.840.1.101.3.4.1.8z2.16.840.1.101.3.4.1.21z2.16.840.1.101.3.4.1.22z2.16.840.1.101.3.4.1.23z2.16.840.1.101.3.4.1.24z2.16.840.1.101.3.4.1.25z2.16.840.1.101.3.4.1.26z2.16.840.1.101.3.4.1.27z2.16.840.1.101.3.4.1.28z2.16.840.1.101.3.4.1.41z2.16.840.1.101.3.4.1.42z2.16.840.1.101.3.4.1.43z2.16.840.1.101.3.4.1.44z2.16.840.1.101.3.4.1.45z2.16.840.1.101.3.4.1.46z2.16.840.1.101.3.4.1.47z2.16.840.1.101.3.4.1.48z1.2.840.113549.1.5.13z1.2.840.113549.1.5.1z1.2.840.113549.1.5.3z1.2.840.113549.1.5.4z1.2.840.113549.1.5.6z1.2.840.113549.1.5.10z1.2.840.113549.1.5.11z1.2.840.113549.1.12.1.1z1.2.840.113549.1.12.1.2z1.2.840.113549.1.12.1.3z1.2.840.113549.1.12.1.4z1.2.840.113549.1.12.1.5z1.2.840.113549.1.12.1.6z1.2.840.113549.1.1.1z1.2.840.113549.1.1.7N)r r r r6 r r r r r� 1 sV r� c @ s� e Zd ZdefdeddifgZdZeeee eeeeeee
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dd� �ZdS )�EncryptionAlgorithmr r r T)r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� c C s� | d j }|dkr$| d d d j S |jd�dkrv|jd�dkrh|jdd�\}}|dkr\d S |d
krhd S ttd |���ttd
|���dS )z�
Returns the name of the key derivation function to use.
:return:
A unicode from of one of the following: "pbkdf1", "pbkdf2",
"pkcs12_kdf"
r r� r �key_derivation_func�.r �_Zpbes1Zpbkdf1Zpkcs12Z
pkcs12_kdfz~
Encryption algorithm "%s" does not have a registered key
derivation function
zw
Unrecognized encryption algorithm "%s", can not determine key
derivation function
N���r� )r �find�splitr_ r )r# �encryption_algor� r r r �kdf� s
zEncryptionAlgorithm.kdfc C s~ | d j }|dkr,| d d d d d j S |jd�d
krl|jd�dkr^|jdd �\}}}|S ttd
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Returns the HMAC algorithm to use with the KDF.
:return:
A unicode string of one of the following: "md2", "md5", "sha1",
"sha224", "sha256", "sha384", "sha512"
r r� r r� rj r� r r� rG z~
Encryption algorithm "%s" does not have a registered key
derivation function
z}
Unrecognized encryption algorithm "%s", can not determine key
derivation hmac algorithm
Nr� r� )r r� r� r_ r )r# r� r� Z hmac_algor r r �kdf_hmac� s
z EncryptionAlgorithm.kdf_hmacc C s� | d j }|dkrB| d d d d }|jdkr<ttd���|j S |jd�dkrz|jd
�dkrl| d d j S ttd |���ttd |���d
S )zu
Returns the byte string to use as the salt for the KDF.
:return:
A byte string
r r� r r� rg re z�
Can not determine key derivation salt - the
reserved-for-future-use other source salt choice was
specified in the PBKDF2 params structure
r� r r� z~
Encryption algorithm "%s" does not have a registered key
derivation function
zs
Unrecognized encryption algorithm "%s", can not determine key
derivation salt
Nr� r� )r �namer_ r r� )r# r� rg r r r �kdf_salt� s
z EncryptionAlgorithm.kdf_saltc C sr | d j }|dkr(| d d d d j S |jd�d
kr`|jd�dkrR| d d j S ttd
|���ttd |���d S )z{
Returns the number of iterations that should be run via the KDF.
:return:
An integer
r r� r r� rh r� r r� r~ z~
Encryption algorithm "%s" does not have a registered key
derivation function
zy
Unrecognized encryption algorithm "%s", can not determine key
derivation iterations
Nr� r� )r r� r_ r )r# r� r r r �kdf_iterations s
z"EncryptionAlgorithm.kdf_iterationsc
C s. | d j }|dd� dkr2dddd�|dd � S d
dd �}||krL|| S |d kr�| d
jd d
j}|d j }dd
dd�}||kr�|| S |dkr�|S |dkr�dS ttd���|dkr�| d
d d
d j }|dk r�|S | d
d jS |jd�d k�r d
d
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d
d
d
ddddddd� | S ttd |���dS ) a�
Returns the key length to pass to the cipher/kdf. The PKCS#5 spec does
not specify a way to store the RC5 key length, however this tends not
to be a problem since OpenSSL does not support RC5 in PKCS#8 and OS X
does not provide an RC5 cipher for use in the Security Transforms
library.
:raises:
ValueError - when the key length can not be determined
:return:
An integer representing the length in bytes
r r rI �aesrx � � )�aes128_�aes192_�aes256_� � )r� r� r� r �encryption_schemeru � )� �x �: � N� zw
Invalid RC2 parameter version found in EncryptionAlgorithm
parameters
r� r� ri r� r ) r� r� r� r� r� r� r� r� r� r� r� r� z@
Unrecognized encryption algorithm "%s"
r� )r �parsedr_ r ri r� )r# r� Zcipher_lengthsZ
rc2_paramsru Zencoded_key_bits_mapri r r r ri % s\
z EncryptionAlgorithm.key_lengthc C s� | d j }|dd� tdddg�kr0|dd� S |dd� d krDd
S |dd� d krXd
S |td d
ddg�krpd
S |dkr�| d d jS ttd|���dS )z�
Returns the name of the encryption mode to use.
:return:
A unicode string from one of the following: "cbc", "ecb", "ofb",
"cfb", "wrap", "gcm", "ccm", "wrap_pad"
r r r� r� r� r� N� Zpbes1_ZcbcZpkcs12_r� r� r� r� r� r r� z@
Unrecognized encryption algorithm "%s"
)r r, �encryption_moder_ r )r# r� r r r r� � s
z#EncryptionAlgorithm.encryption_modec
C s� | d j }|dd� tdddg�kr(dS |tdd d
g�kr>|S |d krJd S |d
kr`| d d jS |jd�dkr�ddd d dd ddd d d d d� | S ttd|���dS )al
Returns the name of the symmetric encryption cipher to use. The key
length can be retrieved via the .key_length property to disabiguate
between different variations of TripleDES, AES, and the RC* ciphers.
:return:
A unicode string from one of the following: "rc2", "rc5", "des",
"tripledes", "aes"
r r r� r� r� r� r� r� r� r� r� Z tripledesr� r r� r� r Zrc4) r� r� r� r� r� r� r� r� r� r� r� r� z@
Unrecognized encryption algorithm "%s"
Nr� )r r, �encryption_cipherr� r_ r )r# r� r r r r� � s4
z%EncryptionAlgorithm.encryption_cipherc
C s� | d j }|dd� tdddg�kr(dS dddd �}||krD|| S |d
kr`| d jd j d S |d
krv| d d jS |jd�dkr�ddddddddddddd� | S ttd|���dS )z�
Returns the block size of the encryption cipher, in bytes.
:return:
An integer that is the block size in bytes
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scheme. Only the PBES2 stores the IV in the params. For PBES1, the IV
is derived from the KDF and this property will return None.
:return:
A byte string or None
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