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Diffstat (limited to 'spec/tor-spec/create-created-cells.md')
| -rw-r--r-- | spec/tor-spec/create-created-cells.md | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/spec/tor-spec/create-created-cells.md b/spec/tor-spec/create-created-cells.md index a6d36a9..56134e4 100644 --- a/spec/tor-spec/create-created-cells.md +++ b/spec/tor-spec/create-created-cells.md @@ -1,4 +1,5 @@ <a id="tor-spec.txt-5.1"></a> + ## CREATE and CREATED cells Users set up circuits incrementally, one hop at a time. To create a @@ -69,6 +70,7 @@ DESTROY cell to tear down the circuit. [CREATE2 is handled by Tor 0.2.4.7-alpha and later.] <a id="tor-spec.txt-5.1.1"></a> + ### Choosing circuit IDs in create cells The CircID for a CREATE/CREATE2 cell is a nonzero integer, selected @@ -102,6 +104,7 @@ attempting to build new circuits on a channel, if a certain number of randomly chosen CircID values are all in use (today's Tor stops after 64). <a id="tor-spec.txt-5.1.2"></a> + ### EXTEND and EXTENDED cells To extend an existing circuit, the client sends an EXTEND or EXTEND2 @@ -202,6 +205,7 @@ When encoding a non-TAP handshake in an EXTEND cell, clients SHOULD use the format with 'client handshake type tag'. <a id="tor-spec.txt-5.1.3"></a> + ### The "TAP" handshake This handshake uses Diffie-Hellman in Z_p and RSA to compute a set of @@ -255,6 +259,7 @@ Once both parties have g^xy, they derive their shared circuit keys and 'derivative key data' value via the KDF-TOR function in 5.2.1. <a id="tor-spec.txt-5.1.4"></a> + ### The "ntor" handshake This handshake uses a set of DH handshakes to compute a set of @@ -333,6 +338,7 @@ into the keys needed for the Tor relay protocol, using the KDF described in 5.2.2 and the tag m_expand. <a id="tor-spec.txt-5.1.4.1"></a> + #### The "ntor-v3" handshake This handshake extends the ntor handshake to include support @@ -488,6 +494,7 @@ Now both parties share the same KEYSTREAM, and can use it to generate their circuit keys. <a id="tor-spec.txt-5.1.5"></a> + ### CREATE_FAST/CREATED_FAST cells When initializing the first hop of a circuit, the OP has already @@ -521,6 +528,7 @@ networkstatus parameter as described in dir-spec.txt. [Tor 0.3.1.1-alpha and later disable CREATE_FAST by default.] <a id="tor-spec.txt-5.1.6"></a> + ### Additional data in CREATE/CREATED cells Some handshakes (currently ntor-v3 defined above) allow the client or the @@ -571,4 +579,3 @@ format: sendme_inc [1 byte] ``` - |