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461
SEP 2006
Ver. 1.0
DP-8020E/8020P/8016P
The POP3 client makes note of this timestamp, and then issues the APOP command. The "name''
parameter has identical semantics to the "name" parameter of the USER command. The "digest" parameter
is calculated by applying the MD5 algorithm to a string consisting of the timestamp (including angle-
brackets) followed by a shared secret. This shared secret is a string known only to the POP3 client and
server. Great care should be taken to prevent unauthorized disclosure of the secret, as knowledge of the
secret will allow any entity to successfully masquerade as the named user. The "digest" parameter
itself is a 16-octet value which is sent in hexadecimal format, using lower-case ASCII characters.
When the POP3 server receives the APOP command, it verifies the digest provided. If the digest is correct,
the POP3 server issues a positive response, and the POP3 session enters the TRANSACTION state.
Otherwise, a negative response is issued and the POP3 session remains in the AUTHORIZATION state.
Note that as the length of the shared secret increases, so does the difficulty of deriving it.
Client
Server
+OK maildrop has 1 message (369 octets)
+OK 1
STAT
Establish TCP connection (TCP port No. 110)
+OK POP3 server ready <[email protected]>
APOP USER c4c9334bac560ecc979e58001b3e22fb
Digest parameter, Cha PASSWD
<[email protected]>PASSWD
Produces a 16 octet digest value of
c4c9334bac560ecc979e58001b3e22fb
Challenge Response
<[email protected]>
Possible Responses:
+OK
-ERR permission denied
Continue to follow the POP3 procedure
APOP overview
Содержание DP-8020E
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Страница 62: ...62 SEP 2006 Ver 1 0 DP 8020E 8020P 8016P 24 Remove the LCD Holder 520 25 Remove the LCD Module 519 ...
Страница 105: ...105 SEP 2006 Ver 1 0 DP 8020E 8020P 8016P DETAIL A 28 35 31 32 33 34 30 29 ...
Страница 185: ...185 SEP 2006 Ver 1 0 DP 8020E 8020P 8016P 3 10 10 MJR PC Board CN22 Refer to FXB PC Board CN25 Refer to FXB PC Board ...
Страница 466: ...466 SEP 2006 Ver 1 0 DP 8020E 8020P 8016P memo ...
Страница 467: ...DZSD001829 14 Panasonic Software Operating Instructions Network Firmware Update Tool for Service Technicians Version 3 ...
Страница 482: ...DZSD000965 17 Panasonic Software Operating Instructions Local Firmware Update Tool for Service Technicians Version 3 ...
Страница 493: ...Local Firmware Update Tool Parallel USB Port Page 12 5b4 Firmware Code File selection is completed Click Next ...
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Страница 498: ...Published in Japan ...