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RSA custom seed

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This commit is contained in:
Yann Autissier 2022-05-29 21:51:44 +02:00
parent 5bab667215
commit 92ae485077
1 changed files with 9 additions and 3 deletions
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gpgkey
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@ -33,6 +33,7 @@ from cryptography.hazmat.primitives import serialization
import duniterpy.key
import gpg
import nacl.bindings
import nacl.encoding
import pgpy
import logging as log
import os
@ -278,16 +279,21 @@ PrivKEY: {self.ipfs_privkey}
log.debug("def gpgkey.pgpy_key_seed(self)")
self.pgpy_key_type()
# todo : unlock password protected key
# todo : choose a custom seed for RSA
assert self.pgpy.is_unlocked
if self.pgpy_key_type == 'RSA.disabled':
# assert self.pgpy.is_unlocked
if self.pgpy_key_type == 'RSA':
log.debug("self.pgpy._key.keymaterial.p=%s" % self.pgpy._key.keymaterial.p)
log.debug("self.pgpy._key.keymaterial.q=%s" % self.pgpy._key.keymaterial.q)
# custom seed: use sha256 hash of (p + q)
self.pgpy_key_seed = nacl.bindings.crypto_hash_sha256(long_to_bytes(self.pgpy._key.keymaterial.p + self.pgpy._key.keymaterial.q))
p = long_to_bytes(self.pgpy._key.keymaterial.p)
q = long_to_bytes(self.pgpy._key.keymaterial.q)
self.pgpy_key_value = "".join([f"{c:02x}" for c in p]) + "".join([f"{c:02x}" for c in q])
self.pgpy_key_size = (len(p) + len(q)) * 8
log.debug("self.pgpy_key_seed=%s" % self.pgpy_key_seed)
log.debug("self.pgpy_key_value=%s" % self.pgpy_key_value)
log.debug("self.pgpy_key_size=%s" % self.pgpy_key_size)
elif self.pgpy_key_type in ('ECDSA', 'EdDSA', 'ECDH'):
log.debug("self.pgpy._key.keymaterial.s=%s" % self.pgpy._key.keymaterial.s)
self.pgpy_key_seed = long_to_bytes(self.pgpy._key.keymaterial.s)
self.pgpy_key_value = "".join([f"{c:02x}" for c in self.pgpy_key_seed])
self.pgpy_key_size = len(self.pgpy_key_seed)*8