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sha3_224, as we only need 32 bit anyways

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mwiegand 2022-02-15 09:42:59 +01:00
parent b1e5992f05
commit f19a8eb6a8
1 changed files with 2 additions and 2 deletions
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4
libs/ssh.py
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@ -1,5 +1,5 @@
from base64 import b64decode, b64encode from base64 import b64decode, b64encode
from hashlib import sha3_256 from hashlib import sha3_224
from cryptography.hazmat.primitives.asymmetric.ed25519 import Ed25519PrivateKey from cryptography.hazmat.primitives.asymmetric.ed25519 import Ed25519PrivateKey
from cryptography.hazmat.primitives.serialization import Encoding, PrivateFormat, PublicFormat, NoEncryption from cryptography.hazmat.primitives.serialization import Encoding, PrivateFormat, PublicFormat, NoEncryption
@ -16,7 +16,7 @@ def generate_ed25519_key_pair(secret):
# handle random 32bit number, occuring twice in a row # handle random 32bit number, occuring twice in a row
nondeterministic_bytes = b64decode(''.join(nondeterministic_privatekey.split('\n')[1:-2])) nondeterministic_bytes = b64decode(''.join(nondeterministic_privatekey.split('\n')[1:-2]))
random_bytes = sha3_256(secret).digest()[0:4] random_bytes = sha3_224(secret).digest()[0:4]
deterministic_bytes = nondeterministic_bytes[:98] + random_bytes + random_bytes + nondeterministic_bytes[106:] deterministic_bytes = nondeterministic_bytes[:98] + random_bytes + random_bytes + nondeterministic_bytes[106:]
deterministic_privatekey = '\n'.join([ deterministic_privatekey = '\n'.join([
'-----BEGIN OPENSSH PRIVATE KEY-----', '-----BEGIN OPENSSH PRIVATE KEY-----',