AS2协议可以选择签名、加密，或者不选择加密、不选择签名，都可以使用HTTP协议进行传输。

•    不签名不加密时，如下图：

     实际报文样式：

POST /Contoso/ReceiveHTTP/1.1
Content-Type: text/plain
AS2-Version: 1.2
Content-Transfer-Encoding: binary
Mime-Version: 1.0
Message-ID: <BIZSRV-2_1C32C2AA-4A0D-4944-A425-801D4E5CD793>
Content-Description: body
Content-ID: {58FC446E-7D8C-413F-A0D0-45956E48D80E}
AS2-To: Fabrikam
Disposition-Notification-To: Contoso
AS2-From: Contoso
EDIINT-Features: multiple-attachments
User-Agent: Microsoft (R) BizTalk (R) Server 2010
Host: bizsrv-1
Content-Length: 64
Expect: 100-continue
Connection: Close
 
Static text.8320591249.6521165843.NLRM.CN04.8320591249.PDF.INV

• 签名不加密

POST /Contoso/Receive HTTP/1.1
Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg="sha1"; boundary="_99C8D355-8E1E-4E4C-8E3C-21DC6BB66D50_"
Disposition-Notification-Options: signed-receipt-protocol=required,pkcs7-signature; signed-receipt-micalg=required,sha1
AS2-Version: 1.2
Message-ID: <BIZSRV-2_5610D942-F883-4BE4-995A-60C949D1C430>
Mime-Version: 1.0
EDIINT-Features: multiple-attachments
AS2-To: Fabrikam
Content-ID: {9BE235D2-2B8E-4892-B3B9-AB2C41880D0F}
Disposition-Notification-To: Contoso
AS2-From: Contoso
User-Agent: Microsoft (R) BizTalk (R) Server 2010
Host: bizsrv-1
Content-Length: 2224
Expect: 100-continue
Connection: Close
 
--_99C8D355-8E1E-4E4C-8E3C-21DC6BB66D50_
Content-Type: text/plain
Content-Transfer-Encoding: binary
Content-Description: body
 
Static text.8320591249.6521165843.NLRM.CN04.8320591249.PDF.INV
 
--_99C8D355-8E1E-4E4C-8E3C-21DC6BB66D50_
Content-type: application/pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
 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 
--_99C8D355-8E1E-4E4C-8E3C-21DC6BB66D50_--

• 加密不签名

POST /Contoso/Receive HTTP/1.1
Content-Type: application/pkcs7-mime; smime-type=enveloped-data; name="smime.p7m"
Disposition-Notification-Options: signed-receipt-protocol=required,pkcs7-signature; signed-receipt-micalg=required,sha1
AS2-Version: 1.2
Content-Transfer-Encoding: binary
Mime-Version: 1.0
Message-ID: <BIZSRV-2_F0F79DDB-3231-495E-AFE1-3153325B6744>
AS2-To: Fabrikam
Disposition-Notification-To: Contoso
AS2-From: Contoso
EDIINT-Features: multiple-attachments
User-Agent: Microsoft (R) BizTalk (R) Server 2010
Host: bizsrv-1
Content-Length: 517
Expect: 100-continue
Connection: Close
 
0.....*.H..
.......0......1..@0..<...0$0.1.0...U....BIZSRV-1-CA.
.2qW......0
..*.H..
.........x 6........~....xk...>..tz<.I.!..:R.uu...l....S.<#oBm..^)..y...U.?s."......T;...p..u..X,......a.h.`...rG.......O4..:....=:......{..A.C.....q>q.....qd....v.d.<..9..e6A8D....0....*.H..
...0...*.H..
.......K..4......+W.=e
...fo......J9..)._t8.......@...v.1..i.4Q..l.. .q.....fEN...@....-...W...i...6..L.^._=......|)..)......-+..pJ....Z..qNVs

• 签名加密

POST /Contoso/Receive HTTP/1.1
Content-Type: application/pkcs7-mime; smime-type=enveloped-data; name="smime.p7m"
Disposition-Notification-Options: signed-receipt-protocol=required,pkcs7-signature; signed-receipt-micalg=required,sha1
AS2-Version: 1.2
Content-Transfer-Encoding: binary
Mime-Version: 1.0
Message-ID: <BIZSRV-2_FA1CFD9E-9744-45A9-9E3D-0009BDA1C0EB>
AS2-To: Fabrikam
Disposition-Notification-To: Contoso
AS2-From: Contoso
EDIINT-Features: multiple-attachments
User-Agent: Microsoft (R) BizTalk (R) Server 2010
Host: bizsrv-1
Content-Length: 2759
Expect: 100-continue
Connection: Close
 
0.
...*.H..
.....
.0.
....1..@0..<...0$0.1.0...U....BIZSRV-1-CA.
.2qW......0
..*.H..
.........%..g..1.,u..Yg..i.H0c./0fl....^....5.....g.+R..].@.k
^tr9..1F.zr.T....A........1.z.......WP.?~.*0J.[........[.......iy.....+. Ou._C.(.K..cB....r....>..S.
i...$.)!...8....j}9xZG...xTP?...;.....d...f....m..m.g.c.J....g.D..P.... ....Y=.f.v......,qEJ5_B.z..O.Ol......c..Q.5T..Ov..4.*.D....r...zp...B.x|w*.V..&"K...2...P....I. ...kGN.......i...........g5..K.......lS...".....r.0..z..8.vb...l..7.~.F.>.@.H.|.....9B!.b.V.Qi..J.,...ap..I..8....tmU.e.O....~......fH....~9..h.,*U.%..8O.R.=8/...".w
.....K>...F.J..>......_.u.Rn:<....	......E...;Q.*.VA,l]V........
.m....i ).Qu:n..............l....G...T......E.f..^..1q.x..nY..s0..C.r:....T.q.4>...]1.........0.T7._.S..*.?9.....,}..6e..b....@...LJ.a...|8...s..3.aX.N......6..m......G..._jL.+.....V.U.IB..6w|.x<.H..F....Mu..h..V.t..<.8..
.
......k.G.^0.../...42m.)..
FJ....].=Fi...#K.Y.Wg..h...........(...z.........j.nk.....w.y.)..g&..}....s".f..E.S...a.$0.d..BY..9..b..../.(..-.}..[..3.<..D..^..r.....1.....uv.-
|...pN.Q.d/...r...*2r.
^..p9.....z....?.y..xe......4. .p.[K..)= f]..+./......|A..... ...`.u..4.Y..9.>.$....[..?..8....o.aB.........
..-U...{.e
|..w.........%c/X..S....>..WMf....O/.....L...%.....q>.tO......`9..........6..a...>.ci.....W)!c.....|..........r.+.&X....S.SGS.R.~.H...qw.D.x...r.%.U{=..*.
.3i......v....5....F......L..i6t.K_m..".]...D.........5.........yx.%.v..?W$.=.."o....`......;n......).T._........3EY?..DuMB....9vie.o.../..L.....#..a(..U.]....SLOzz.N..O..:? .._...Qz2.(of.8.V.-_..
 
......R|d^..0..,W9..$....%Q.J......2.>.,.......fx.........
(...&3.Y.@.exG.ey...!=...f`8...
0...............E.

MDN消息

MDN消息不能加密，只能签名。

MDN消息无论是签名还是不签名，都是MIME格式的消息。

MDN不签名

HTTP/1.1 200 OK
Content-Length: 681
Content-Type: multipart/report; report-type=disposition-notification;
.boundary="_E4BB7B25-A5C0-4BA7-BA06-176B374C8A30_"
Server: Microsoft-IIS/7.5
AS2-Version: 1.2
Message-ID: <BIZSRV-1_9676DD36-B582-410C-A431-7FC467005D45>
Mime-Version: 1.0
EDIINT-Features: multiple-attachments
AS2-To: Contoso
AS2-From: Fabrikam
X-Powered-By: ASP.NET
Date: Wed, 09 Nov 2016 03:30:52 GMT
Connection: close
 
--_E4BB7B25-A5C0-4BA7-BA06-176B374C8A30_
Content-Type: text/plain
Content-Transfer-Encoding: binary
Content-ID: {243F1896-6016-48A8-B2F9-13C718B2D015}
Content-Description: plain
 
This is Toll MDN
--_E4BB7B25-A5C0-4BA7-BA06-176B374C8A30_
Content-Type: message/disposition-notification
Content-Transfer-Encoding: 7bit
Content-ID: {5A37A23A-A50F-4FD4-89C8-5FB23EAF2478}
Content-Description: body
 
Final-Recipient: rfc822; Fabrikam
Original-Message-ID: <BIZSRV-2_1C32C2AA-4A0D-4944-A425-801D4E5CD793>
Disposition: automatic-action/MDN-sent-automatically; processed
Received-Content-MIC: IhpgpyGz330b6V/lb2gEvHHAbJ4=, sha1
 
--_E4BB7B25-A5C0-4BA7-BA06-176B374C8A30_--

MDN签名

HTTP/1.1 200 OK
Content-Length: 2880
Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg="sha1";
 boundary="_60276327-5600-4CA2-86E1-06CEDAED1A46_"
Server: Microsoft-IIS/7.5
AS2-Version: 1.2
Message-ID: <BIZSRV-1_EC23F83B-501A-4CC0-9C06-F7CBB4CF6767>
Mime-Version: 1.0
EDIINT-Features: multiple-attachments
AS2-To: Contoso
AS2-From: Fabrikam
X-Powered-By: ASP.NET
Date: Wed, 09 Nov 2016 02:23:42 GMT
Connection: close
 
--_60276327-5600-4CA2-86E1-06CEDAED1A46_
Content-Type: multipart/report; report-type=disposition-notification;
.boundary="_554A0419-2C77-4521-9668-42E8C1EB4548_"
 
--_554A0419-2C77-4521-9668-42E8C1EB4548_
Content-Type: text/plain
Content-Transfer-Encoding: binary
Content-ID: {529F03AA-AF3F-453A-B890-D6A88176C500}
Content-Description: plain
 
This is Toll MDN
--_554A0419-2C77-4521-9668-42E8C1EB4548_
Content-Type: message/disposition-notification
Content-Transfer-Encoding: 7bit
Content-ID: {0D047958-8B3C-40D1-9CCC-1F48098FBDA4}
Content-Description: body
 
Final-Recipient: rfc822; Fabrikam
Original-Message-ID: <BIZSRV-2_2CF73B67-1A9A-4931-91E0-A57FFCBAF260>
Disposition: automatic-action/MDN-sent-automatically; processed
Received-Content-MIC: IhpgpyGz330b6V/lb2gEvHHAbJ4=, sha1
 
--_554A0419-2C77-4521-9668-42E8C1EB4548_--
 
--_60276327-5600-4CA2-86E1-06CEDAED1A46_
Content-type: application/pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
 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 
--_60276327-5600-4CA2-86E1-06CEDAED1A46_--