Preliminary Release
14. The 2288 can operate using the AES256 encryption standard with the following
commands:
ee=0<CR>
no encryption
ee=1<CR>
AES256 encryption
No encryption results in the least number of extra characters appended to a message.
This minimizes transmission latency. Encryption will pad extra randomized characters to
create standardized message segment lengths of 128 bits. The pad characters are
removed at the receiver.
The AES256 standard uses a 256-bit key. The key is generated from a user generated
phrase. This phrase can be up to 32 case sensitive characters. It is entered with the
command: aesp=### . . . ###<CR>. The phrase is converted into a 256 bit key using the
SHA256 secure hashing algorithm. This key is used by the AES256 encryption and
decryption algorithms.
15. Should it be necessary, the transmitter can be disabled with the command: et=0<CR>.
To re-enable the transmitter: et=1<CR>.
4.0 Front Panel Indicators
The six front panel LEDS are defined in Table 1:
LED
Description
PWR
On when 12 Vdc power is applied.
RXD1
On when receive data is active.
RXD2
On when diagnostic receive data is active.
DCD
On when receive data preamble is detected.
TXD1
On when transmit data is active.
TXD2
On when diagnostic transmit data is active.
Table
1
LED Definition
The LEDs show the status of both Ethernet and RS-232 serial data. Diagnostic data occurs during
Telnet sessions.
Alligator Communications Model 2288 Technical Manual REV3.0 Copyright © 2018
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