mirror of
https://github.com/Neo-Desktop/WindowsXPKg
synced 2025-12-08 19:25:13 +02:00
f7427792e3
* Add Wither's gists as references * remove broken ones --------- Co-authored-by: WitherOrNot <damemem@gmail.com>
98 lines
2.4 KiB
Python
98 lines
2.4 KiB
Python
from struct import pack, unpack, calcsize
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from json import dumps
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from os.path import basename
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import sys
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def readint(f):
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return unpack("<I", f.read(4))[0]
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def readstc(f, s):
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s = "<" + s
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sz = calcsize(s)
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return unpack(s, f.read(sz))
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pubkey_data = {}
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with open(sys.argv[1], "rb") as f:
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magic1 = readint(f)
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if magic1 != 0x44556677:
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raise Exception("Invalid pubkey format")
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f.read(4)
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field_data_size = readint(f)
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magic2 = readint(f)
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if magic2 != 0x00112233:
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raise Exception("Invalid pubkey format")
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f.read(4)
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data = readstc(f, "B" * 3 + "I" * 9)
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must_be_0 = data[0]
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if must_be_0 != 0:
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raise Exception("Invalid field data")
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size_modulus = data[1]
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size_order = data[2]
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ext_deg1 = data[3]
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ext_deg2 = data[4]
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offset_modulus = data[8]
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f.read(1)
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h1_bases = list(readstc(f, "B" * size_modulus))
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modulus = int.from_bytes(f.read(size_modulus), "little")
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order = int.from_bytes(f.read(size_order), "little")
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ext_minpoly1 = list(readstc(f, "B" * (ext_deg1 + 1)))
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ext_minpoly2 = list(readstc(f, "B" * (ext_deg2 + 1)))
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f.read(size_modulus * 2)
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ec_a = int.from_bytes(f.read(size_modulus), "little")
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ec_b = int.from_bytes(f.read(size_modulus), "little")
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f.seek(field_data_size + 12)
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points = []
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for i in range(size_modulus):
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x = []
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y = []
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for i in range(ext_deg1):
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x.append(int.from_bytes(f.read(size_modulus), "little"))
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for i in range(ext_deg1):
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y.append(int.from_bytes(f.read(size_modulus), "little"))
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points.append({"x": x, "y": y})
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pairing_val = []
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for i in range(ext_deg2):
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ext1_val = []
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for j in range(ext_deg1):
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ext1_val.append(int.from_bytes(f.read(size_modulus), "little"))
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pairing_val.append(ext1_val)
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pubkey_data = {
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"field": {
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"modulus": modulus,
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"ec_base_order": order,
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"k3_minpoly": ext_minpoly1,
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"k6_minpoly": ext_minpoly2,
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},
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"h1_bases": h1_bases,
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"curve": {
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"a": ec_a,
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"b": ec_b
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},
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"points": points,
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"pairing_val": pairing_val
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}
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with open("pubkey_info/" + basename(sys.argv[1]).replace(".pubkey", ".json"), "w") as g:
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g.write(dumps(pubkey_data, indent=4)) |