draft-ietf-sshm-cert: section 2.2 error?

[norrisjeremy]

Hi,

I believe there may be an error in the last example presented in section 2.2:

Finally, the following is an example of a critical options section that contains a flag option "foo@example.com" and a string-valued option "force-command" with a the value "sftp".

  00000038                           # Criticial options len=56
    0000000f                         # 1st key string len=15
      666f6f406578616d706c652e636f6d #   "foo@example.com"
    00000000                         # 1st value string len=0
    0000000d                         # 2nd key string len=13
      666f7263652d636f6d6d616e64     #   "force-command"
    00000008                         # 2nd value string len=8
      00000004                       #   value body string len=4
        73667470                     #     "sftp"

I believe the above example should actually be encoded with a total length of 52 bytes (00000034), not 56 bytes (00000038):

0000000f == 4 bytes
666f6f406578616d706c652e636f6d == 15 bytes
00000000 == 4 bytes
0000000d == 4 bytes
666f7263652d636f6d6d616e64 == 13 bytes
00000008 == 4 bytes
00000004 == 4 bytes
73667470 == 4 bytes

4 + 15 + 4 + 4 + 13 + 4 + 4 + 4 = 52

I believe the example should therefore be:

  00000034                           # Critical options len=52
    0000000f                         # 1st key string len=15
      666f6f406578616d706c652e636f6d #   "foo@example.com"
    00000000                         # 1st value string len=0
    0000000d                         # 2nd key string len=13
      666f7263652d636f6d6d616e64     #   "force-command"
    00000008                         # 2nd value string len=8
      00000004                       #   value body string len=4
        73667470                     #     "sftp"

I also noticed and corrected a slight spelling error above as well ("Criticial" instead of "Critical").

Thanks!
Jeremy