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4.2. Simple Password Authentication Section Format

If the Authentication Present (A) bit is set in the header, and the Authentication Type field contains 1 (Simple Password), the Authentication Section has the following format:

 0                   1                   2                   3
 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|   Auth Type   |   Auth Len    |  Auth Key ID  |  Password...  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                              ...                              |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Field Definitions​

Auth Type

The Authentication Type, which in this case is 1 (Simple Password).

Auth Len

The length of the Authentication Section, in bytes. For Simple Password authentication, the length is equal to the password length plus three.

Auth Key ID

The authentication key ID in use for this packet. This allows multiple keys to be active simultaneously.

Password

The simple password in use on this session. The password is a binary string, and MUST be from 1 to 16 bytes in length. The password MUST be encoded and configured according to section 6.7.2.

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