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https://salsa.debian.org/gnuk-team/gnuk/gnuk.git
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53 lines
1.4 KiB
Python
53 lines
1.4 KiB
Python
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from binascii import unhexlify
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def read_key_from_file(file):
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f = open(file)
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n_str = f.readline()[:-1]
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e_str = f.readline()[:-1]
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p_str = f.readline()[:-1]
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q_str = f.readline()[:-1]
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f.close()
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e = int(e_str, 16)
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p = int(p_str, 16)
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q = int(q_str, 16)
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n = int(n_str, 16)
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if n != p * q:
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raise ValueError("wrong key", p, q, n)
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return (unhexlify(n_str), unhexlify(e_str), unhexlify(p_str), unhexlify(q_str))
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key = [ None, None, None ]
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key[0] = read_key_from_file('rsa-sig.key')
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key[1] = read_key_from_file('rsa-dec.key')
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key[2] = read_key_from_file('rsa-aut.key')
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def build_privkey_template(openpgp_keyno, keyno):
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n_str = key[keyno][0]
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e_str = '\x00' + key[keyno][1]
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p_str = key[keyno][2]
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q_str = key[keyno][3]
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if openpgp_keyno == 1:
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keyspec = '\xb6'
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elif openpgp_keyno == 2:
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keyspec = '\xb8'
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else:
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keyspec = '\xa4'
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key_template = '\x91\x04'+ '\x92\x81\x80' + '\x93\x81\x80'
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exthdr = keyspec + '\x00' + '\x7f\x48' + '\x08' + key_template
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suffix = '\x5f\x48' + '\x82\x01\x04'
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t = '\x4d' + '\x82\01\16' + exthdr + suffix + e_str + p_str + q_str
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return t
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def build_privkey_template_for_remove(openpgp_keyno):
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if openpgp_keyno == 1:
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keyspec = '\xb6'
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elif openpgp_keyno == 2:
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keyspec = '\xb8'
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else:
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keyspec = '\xa4'
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return '\x4d\02' + keyspec + '\0x00'
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