Bitmessage/PyBitmessage-2024-12-09
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Pad pubkey coordinates in pyelliptic.ECC.get_pubkey()

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Lee Miller 2024-01-07 03:32:10 +02:00
parent 688094371e
commit 8e95279906
Signed by untrusted user: lee.miller
GPG Key ID: 4F97A5EA88F4AB63
1 changed files with 11 additions and 4 deletions
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15
src/pyelliptic/ecc.py
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@ -107,12 +107,19 @@ class ECC(object):
High level function which returns : High level function which returns :
curve(2) + len_of_pubkeyX(2) + pubkeyX + len_of_pubkeyY + pubkeyY curve(2) + len_of_pubkeyX(2) + pubkeyX + len_of_pubkeyY + pubkeyY
""" """
ctx = OpenSSL.BN_CTX_new()
n = OpenSSL.BN_new()
group = OpenSSL.EC_GROUP_new_by_curve_name(self.curve)
OpenSSL.EC_GROUP_get_order(group, n, ctx)
key_len = OpenSSL.BN_num_bytes(n)
pubkey_x = self.pubkey_x.rjust(key_len, b'\x00')
pubkey_y = self.pubkey_y.rjust(key_len, b'\x00')
return b''.join(( return b''.join((
pack('!H', self.curve), pack('!H', self.curve),
pack('!H', len(self.pubkey_x)), pack('!H', len(pubkey_x)),
self.pubkey_x, pubkey_x,
pack('!H', len(self.pubkey_y)), pack('!H', len(pubkey_y)),
self.pubkey_y, pubkey_y,
)) ))
def get_privkey(self): def get_privkey(self):