CSM Cryptographic Service Message Header

To indicate the beginning of a Cryptographic Service Message (CSM) Transaction Set and to provide both the class or type of the CSM and the cryptographic end parties to the transaction

Position
Element
Name
Type
Requirement
Min
Max
Repeat
CSM01
Cryptographic Service Message (CSM) Message Class Code
Identifier (ID)
Mandatory
3
4
1
Message class (MCL)
CSM02
Security Originator Name
String (AN)
Optional
1
64
1
Unique designation (identity) of the cryptographic process that performs authentication or encryption on data to be interchanged, or originates a cryptographic service message Note: X9 has a minimum length of 4 characters for the security originator; no mechanism, or registration method is provided by X9 or X12 to guarantee the uniqueness of the identifier
CSM03
Security Recipient Name
String (AN)
Optional
1
64
1
Unique designation (identity) of the cryptographic process that performs authentication or decryption on received data, or is the destination of a cryptographic service message Note: X9 has a minimum length of 4 characters for the security recipient; no mechanism, or registration method is provided by X9 or X12 to guarantee the uniqueness of the identifier

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