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Differences between revisions 7 and 9 (spanning 2 versions)
Revision 7 as of 2007-10-18 13:01:20
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Editor: h113-n225
Comment: Some corrections in external links section. My english is bad, i'm sorry for er.
Revision 9 as of 2008-02-22 14:09:58
Size: 2577
Editor: proxy1-nsn
Comment: improved the description of transport protocols
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CMP is a protocol for managing Public Key Infrastrictures (PKI) based on X.509v3 certificates. Protocol messages are defined for certificate creation and management. It is used by commercial PKI products as ''Entrust Security Manager'' and ''Unicert'' CMP is a protocol for managing Public Key Infrastructures (PKI) based on X.509v3 certificates. Protocol messages are defined for certificate creation and management. It is used by commercial PKI products as ''Entrust Security Manager'', ''Unicert'', ''Insta Certifier'' and ''Cryptlib''. An OpenSSL client side implementation is work in progess.
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 * While there is no implementation known supporting it, transporting CMP over email (["SMTP"], ["POP"] etc.) or file transfer (["FTP") is also mentioned in CMPtrans (see below).
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You cannot directly filter CMP protocol while capturing. However, if you know the ["TCP"] port used (see above), you can filter on that one. You cannot directly filter CMP while capturing. However, if you know the ["TCP"] port used (see above), you can filter on that one.
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 * [http://www.ietf.org/rfc/rfc4210.txt RFC 4210] ''Internet X.509 Public Key Infrastructure Certificate Management Protocols''. This version obsolets [http://www.ietf.org/rfc/rfc2510.txt RFC 2510]. New RFC says that the CMP transport protocol issues are handled in a separate document CMPtrans ( [http://tools.ietf.org/html/draft-ietf-pkix-cmp-transport-protocols-05 Last IETF draft of CMPtrans] ).  * [http://www.ietf.org/rfc/rfc4210.txt RFC 4210] ''Internet X.509 Public Key Infrastructure Certificate Management Protocols''. This version obsolets [http://www.ietf.org/rfc/rfc2510.txt RFC 2510]. According to the new RFC, the CMP transport protocol issues are handled in the separate CMPtrans document.
 *
[http://tools.ietf.org/html/draft-ietf-pkix-cmp-transport-protocols-05 Last IETF CMPtrans draft] This draft for ''CMPtrans'' is expired, hence there is '''no obligatory transport protocols spec available'''. There are obvious mistakes in it which may cause confusion. Implementations more or less adhere to it.
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== Discussion ==

Certificate Management Protocol (CMP)

CMP is a protocol for managing Public Key Infrastructures (PKI) based on X.509v3 certificates. Protocol messages are defined for certificate creation and management. It is used by commercial PKI products as Entrust Security Manager, Unicert, Insta Certifier and Cryptlib. An OpenSSL client side implementation is work in progess.

History

TODO:

Protocol dependencies

  • ["TCP"]: CMP can use ["TCP"] or ["HTTP"] as its transport protocol. The well known TCP port for CMP traffic is 829.
  • While there is no implementation known supporting it, transporting CMP over email (["SMTP"], ["POP"] etc.) or file transfer (["FTP") is also mentioned in CMPtrans (see below).

Example traffic

TODO: Add example traffic here (as plain text or Wireshark screenshot).

Wireshark

TODO:

Preference Settings

TODO:.

Example capture file

  • attachment:SampleCaptures/cmp-trace.pcap.gz CMP certificate requests
  • attachment:SampleCaptures/cmp-in-http-with-errors-in-cmp-protocol.pcap.gz CMP version 2 encapsulated in HTTP on port 4711. Full "Initialization Request" and rejected "Key Update Request". There are some errors in the CMP packages.

Display Filter

A complete list of CMP display filter fields can be found in the [http://www.wireshark.org/docs/dfref/c/cmp.html display filter reference]

  • Show only the CMP based traffic:
     cmp 

Capture Filter

You cannot directly filter CMP while capturing. However, if you know the ["TCP"] port used (see above), you can filter on that one.

  • Capture only the CMP traffic over the default port (829):
     tcp port 829 

CMP (last edited 2013-02-16 10:47:51 by LTejas)