diff options
Diffstat (limited to 'src/or/onion_ntor.c')
| -rw-r--r-- | src/or/onion_ntor.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/or/onion_ntor.c b/src/or/onion_ntor.c index d1a268f4cd..ded97ee73d 100644 --- a/src/or/onion_ntor.c +++ b/src/or/onion_ntor.c @@ -5,6 +5,17 @@ * \file onion_ntor.c * * \brief Implementation for the ntor handshake. + * + * The ntor circuit-extension handshake was developed as a replacement + * for the old TAP handshake. It uses Elliptic-curve Diffie-Hellman and + * a hash function in order to perform a one-way authenticated key + * exchange. The ntor handshake is meant to replace the old "TAP" + * handshake. + * + * We instantiate ntor with curve25519, HMAC-SHA256, and HKDF. + * + * This handshake, like the other circuit-extension handshakes, is + * invoked from onion.c. */ #include "orconfig.h" |