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Fix signature in Python version

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This commit is contained in:
Florian Bach 2021-09-22 17:52:38 +02:00
parent 6177bdf67a
commit fa3a336d5e
1 changed files with 8 additions and 14 deletions
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22
register_ADE_account.py
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@ -3,8 +3,8 @@
'''
This is an experimental Python version of libgourou. Right now it only supports part of the authorization
(and doesn't support fulfillment at all). All the encryption / decryption stuff works, the node hashing
also works, only thing I'm stuck at is the signature. Right now the Adobe server responds with "BadPadding".
(and doesn't support fulfillment at all). All the encryption / decryption stuff works, but once I send
the final request to the Adobe server, it responds with E_AUTH_USER_AUTH, and I have no idea what that means.
Who knows, maybe there will someday be a full Python version of libgourou so it can be used in
Calibre on all operating systems without additional dependencies.
@ -19,6 +19,8 @@ from OpenSSL import crypto
from Crypto import Random
from Crypto.PublicKey import RSA
from Crypto.Util.asn1 import DerSequence
from Crypto.Signature import PKCS1_v1_5 as pkcssign
from Crypto.Hash import SHA
from Crypto.Cipher import AES
from Crypto.Cipher import PKCS1_v1_5
from uuid import getnode
@ -584,36 +586,28 @@ def sign_node(node):
sha_hash = hash_node(node)
print("SHA1 HASH is " + sha_hash.hex())
global devkey_bytes
global pkcs12
print("pkcs12 is")
print(pkcs12)
my_pkcs12 = base64.b64decode(pkcs12)
pkcs_data = crypto.load_pkcs12(my_pkcs12, base64.b64encode(devkey_bytes))
my_priv_key = crypto.dump_privatekey(crypto.FILETYPE_ASN1, pkcs_data.get_privatekey())
print(my_priv_key)
key = RSA.importKey(my_priv_key)
cipherAC = PKCS1_v1_5.new(key)
crypted_msg = cipherAC.encrypt(bytes(sha_hash))
cipherAC = pkcssign.new(key)
crypted_msg = cipherAC.sign(sha_hash)
print("Encrypted SHA hash: " + str(crypted_msg))
return base64.b64encode(crypted_msg)
def hash_node(node):
hash_ctx = hashlib.sha1()
hash_ctx = SHA.new()
hash_node_ctx(node, hash_ctx)
return hash_ctx.digest()
return hash_ctx