2.2.4.2 External Group Token
The External Group Token structure is a variable-length structure associated with a principal that contains a collection of the SystemIDs (section 2.2.1.12) for the external groups of which the principal is a member.
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Size |
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AuthenticationType |
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TimeTokenGenerated |
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UserSystemId (variable) |
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TokenGroups (variable) |
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Size (4 bytes): A 4-byte, unsigned integer value specifying the length of the External Group Token in bytes.
Magic (4 bytes): A 4-byte, unsigned integer specifying the version of the External Group Token format. This version of the protocol MUST use the value 0xCACBCECF.
AuthenticationType (4 bytes): A 4-byte, unsigned integer value specifying the authentication provider for the SystemID of the principal. The value MUST be one of the following.
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Value
Meaning
0x00000001
Windows Integrated Authentication
0x00000003
ASP.NET Forms Authentication
UserSystemIdSize (4 bytes): A 4-byte, unsigned integer value specifying the length of the principal's serialized binary SystemID (section 2.2.1.12) in bytes.
TokenGroupsSize (4 bytes): A 4-byte, unsigned integer value specifying the length in bytes of the TokenGroups field (2) containing the serialized binary SystemIDs for the external groups.
TimeTokenGenerated (8 bytes): An 8-byte, unsigned integer value specifying the time that this token was generated, stored as seconds since midnight, January 1, 1899, Coordinated Universal Time (UTC).
UserSystemId (variable): A variable-length field (2) containing the serialized binary SystemID for the principal, occupying the number of bytes specified in UserSystemIdSize.
TokenGroups (variable): A variable-length field (2) containing a Token Groups (section 2.2.4.4) structure, which contains the serialized binary SystemIDs for the external groups of which the principal is a member, occupying the number of bytes specified in TokenGroupsSize.