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@ -3,8 +3,7 @@
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"""
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Asymmetric cryptography using elliptic curves
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"""
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# pylint: disable=protected-access
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# pylint: disable=protected-access, too-many-branches, too-many-locals
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# Copyright (C) 2011 Yann GUIBET <yannguibet@gmail.com>
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# See LICENSE for details.
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@ -172,7 +171,8 @@ class ECC(object):
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if OpenSSL.EC_POINT_get_affine_coordinates_GFp(
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group, pub_key, pub_key_x, pub_key_y, 0) == 0:
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raise Exception("[OpenSSL] EC_POINT_get_affine_coordinates_GFp FAIL ...")
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raise Exception(
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"[OpenSSL] EC_POINT_get_affine_coordinates_GFp FAIL ...")
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privkey = OpenSSL.malloc(0, OpenSSL.BN_num_bytes(priv_key))
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pubkeyx = OpenSSL.malloc(0, OpenSSL.BN_num_bytes(pub_key_x))
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@ -275,7 +275,6 @@ class ECC(object):
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def raw_check_key(self, privkey, pubkey_x, pubkey_y, curve=None):
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"""Check key validity, key is supplied as binary data"""
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# pylint: disable=too-many-branches
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if curve is None:
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curve = self.curve
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elif isinstance(curve, str):
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@ -323,7 +322,6 @@ class ECC(object):
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"""
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Sign the input with ECDSA method and returns the signature
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"""
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# pylint: disable=too-many-branches,too-many-locals
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try:
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size = len(inputb)
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buff = OpenSSL.malloc(inputb, size)
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@ -393,7 +391,6 @@ class ECC(object):
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Verify the signature with the input and the local public key.
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Returns a boolean
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"""
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# pylint: disable=too-many-branches
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try:
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bsig = OpenSSL.malloc(sig, len(sig))
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binputb = OpenSSL.malloc(inputb, len(inputb))
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@ -436,10 +433,13 @@ class ECC(object):
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0, digest, dgst_len.contents, bsig, len(sig), key)
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if ret == -1:
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return False # Fail to Check
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# Fail to Check
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return False
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if ret == 0:
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return False # Bad signature !
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return True # Good
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# Bad signature !
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return False
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# Good
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return True
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finally:
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OpenSSL.EC_KEY_free(key)
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@ -487,7 +487,6 @@ class ECC(object):
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"""
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Decrypt data with ECIES method using the local private key
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"""
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# pylint: disable=too-many-locals
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blocksize = OpenSSL.get_cipher(ciphername).get_blocksize()
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iv = data[:blocksize]
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i = blocksize
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