def sign_desc(self, body):
idx = body.rfind("\nrouter-sig-ed25519 ")
if idx >= 0:
self.ED_CERT
signed_part = body[:idx + len("\nrouter-sig-ed25519 ")]
signed_part = "Tor router descriptor signature v1" + signed_part
digest = hashlib.sha256(signed_part).digest()
ed_sig = ed25519_exts_ref.signatureWithESK(digest,
self.ed_signing_sk,
self.ed_signing_pk)
body = body.replace(MAGIC2,
base64.b64encode(ed_sig).replace("=", ""))
idx = body.rindex("\nrouter-signature")
end_of_sig = body.index("\n", idx + 1)
signed_part = body[:end_of_sig + 1]
digest = hashlib.sha1(signed_part).digest()
assert len(digest) == 20
rsasig = rsa_sign(digest, self.rsa_id)
body = body.replace(MAGIC1, objwrap("SIGNATURE", b64(rsasig)))
return body
def sign_desc(self, body):
idx = body.rfind("\nrouter-sig-ed25519 ")
if idx >= 0:
self.ED_CERT
signed_part = body[:idx+len("\nrouter-sig-ed25519 ")]
signed_part = "Tor router descriptor signature v1" + signed_part
digest = hashlib.sha256(signed_part).digest()
ed_sig = ed25519_exts_ref.signatureWithESK(digest,
self.ed_signing_sk, self.ed_signing_pk)
body = body.replace(MAGIC2, base64.b64encode(ed_sig).replace("=",""))
idx = body.rindex("\nrouter-signature")
end_of_sig = body.index("\n", idx+1)
signed_part = body[:end_of_sig+1]
digest = hashlib.sha1(signed_part).digest()
assert len(digest) == 20
rsasig = rsa_sign(digest, self.rsa_id)
body = body.replace(MAGIC1, objwrap("SIGNATURE", b64(rsasig)))
return body
def makeEdSigningKeyCert(sk_master, pk_master, pk_signing, date,
includeSigning=False, certType=1):
assert len(pk_signing) == len(pk_master) == 32
expiration = struct.pack("!L", date//3600)
if includeSigning:
extensions = "\x01\x00\x20\x04\x00%s"%(pk_master)
else:
extensions = "\x00"
signed = "\x01%s%s\x01%s%s" % (
chr(certType), expiration, pk_signing, extensions)
signature = ed25519_exts_ref.signatureWithESK(signed, sk_master, pk_master)
assert len(signature) == 64
return signed+signature
def makeEdSigningKeyCert(sk_master, pk_master, pk_signing, date,
includeSigning=False, certType=1):
assert len(pk_signing) == len(pk_master) == 32
expiration = struct.pack("!L", date//3600)
if includeSigning:
extensions = "\x01\x00\x20\x04\x00%s"%(pk_master)
else:
extensions = "\x00"
signed = "\x01%s%s\x01%s%s" % (
chr(certType), expiration, pk_signing, extensions)
signature = ed25519_exts_ref.signatureWithESK(signed, sk_master, pk_master)
assert len(signature) == 64
return signed+signature