diff options
| author | Yawning Angel <yawning@torproject.org> | 2014-08-27 12:26:09 +0000 |
|---|---|---|
| committer | Yawning Angel <yawning@torproject.org> | 2014-08-27 12:26:09 +0000 |
| commit | 94d3fe9a0802e2614d4a4b9297ed57b1979865fc (patch) | |
| tree | 000321b4972695e6368cbcf6aeac1791935aaef5 /doc | |
| parent | 468cd4bde80419824beb20d02c32315f46288d13 (diff) | |
Change the TYPE_PRNG_SEED length to 24.
This matches what the code actually sends. It's shorter than the
ScrambleSuit PRNG seed, but that's because the SipHash-2-4 based
Hash_DRBG has 24 bytes of internal state (key + initial output).
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/obfs4-spec.txt | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/doc/obfs4-spec.txt b/doc/obfs4-spec.txt index d2aa859..0e844a1 100644 --- a/doc/obfs4-spec.txt +++ b/doc/obfs4-spec.txt @@ -104,7 +104,7 @@ Length of the ntor AUTH tag (A HMAC-SHA256 digest). - InlineSeedFrameLength = 53 + InlineSeedFrameLength = 45 Length of a unpadded TYPE_PRNG_SEED frame. @@ -144,7 +144,7 @@ The amount of padding is chosen such that the smallest possible request and response (requests and responses with the minimum amount of padding) are - equal in size. For details on the InlineSeedFrameLength, see section 7. + equal in size. For details on the InlineSeedFrameLength, see section 6. The client handshake process is as follows. @@ -282,7 +282,7 @@ TYPE_PRNG_SEED (0x01): The entire payload is to be treated as seeding material for the - protocol polymorphism PRNG. The format is 32 bytes of seeding + protocol polymorphism PRNG. The format is 24 bytes of seeding material. Implementations SHOULD ignore unknown packet types for the purposes of |