query0 = dns.dns_build_query(type, name)
if pubkey:
mykey = open('/dev/urandom').read(32)
mypubkey = nacl.smult_curve25519_base(mykey)
key = nacl.box_curve25519xsalsa20poly1305_beforenm(pubkey, mykey)
nonce1 = open('/dev/urandom').read(12)
box = nacl.box_curve25519xsalsa20poly1305_afternm(query0, nonce1 + 12 * '\0', key)
if zone is not False:
query = dnscurve.dnscurve_encode_txt_query(nonce1, box, mypubkey, zone)
else:
query = dnscurve.dnscurve_encode_streamlined_query(nonce1, box, mypubkey)
else:
query = query0
s.send(query)
response = s.recv(4096)
if pubkey:
if zone is not False:
if query[:2] != response[:2]:
raise "Response transaction ID (DNSCurve TXT) didn't match"
nonce2, box = dnscurve.dnscurve_decode_txt_response(response)
else:
nonce2, box = dnscurve.dnscurve_decode_streamlined_response(response)
if nonce2[:12] != nonce1:
raise "Response nonce didn't match"
response = nacl.box_curve25519xsalsa20poly1305_open_afternm(box, nonce2, key)
if query0[:2] != response[:2]:
raise "Response transaction ID (DNS) didn't match"
dns.dns_print(response)
import sys
import dns
if __name__ == '__main__':
packet = sys.stdin.read()
dns.dns_print(packet)
mykey = open('/dev/urandom').read(32)
mypubkey = nacl.smult_curve25519_base(mykey)
key = nacl.box_curve25519xsalsa20poly1305_beforenm(pubkey, mykey)
nonce1 = open('/dev/urandom').read(12)
box = nacl.box_curve25519xsalsa20poly1305_afternm(query0,
nonce1 + 12 * '\0', key)
if zone is not False:
query = dnscurve.dnscurve_encode_txt_query(nonce1, box, mypubkey, zone)
else:
query = dnscurve.dnscurve_encode_streamlined_query(
nonce1, box, mypubkey)
else:
query = query0
s.send(query)
response = s.recv(4096)
if pubkey:
if zone is not False:
if query[:2] != response[:2]:
raise "Response transaction ID (DNSCurve TXT) didn't match"
nonce2, box = dnscurve.dnscurve_decode_txt_response(response)
else:
nonce2, box = dnscurve.dnscurve_decode_streamlined_response(response)
if nonce2[:12] != nonce1:
raise "Response nonce didn't match"
response = nacl.box_curve25519xsalsa20poly1305_open_afternm(
box, nonce2, key)
if query0[:2] != response[:2]:
raise "Response transaction ID (DNS) didn't match"
dns.dns_print(response)
import sys import dns if __name__ == '__main__': packet = sys.stdin.read() dns.dns_print(packet)
