Short OID based AID

Go back Parent node: "Foreign" AID group (D276000186F)

D276000186 F 6


D276000186F6   ISO/IEC 7816 Application Identifier (AID)
               > D2:76:00:01:86:F6 <
D276000186     Registered Application Provider Identifier (RID)
D              Category D: Local/National registration
 276           ISO/IEC 3166-1 Numeric Country code : 276 (Germany)
    000186     Assigned number, BCD recommended
          F6   Proprietary application identifier extension (PIX)


Short OID based AID (no application-specific bits, since the OID should be application specific)

The payload is the ASN.1 DER encoding of an Absolute OID, but without "Type" and "Length" bytes (to save space).
Note that you can only encode short OIDs which decode into a DER code of 12 bytes or less.
There is no application specific part, so you should define an OID which resembles your desired AID.


D2 76 00 01 86 F6 + DER Encoding of an ABSOLUTE OID without Type (max 10 bytes without type = 11 bytes DER)

Steps how to generate such an AID:
1. Encode your Absolute OID to the ASN.1 DER format, e.g. using the tool
    Requirements (otherwise it is not possible to use the OID as AID using this method):
    - The DER encoding must not exceed 11 bytes of length
    - If the DER encoding is exactly 11 bytes long, the last byte must not be FF (this would generate an AID which is reserved by ISO)
      This is always true for DER OID encodings, so there is nothing you need to worry about.
2. Replace the first byte of the DER encoding (value "06") with "D2 76 00 01 86 F6".


D2 76 00 01 86 F6 02 88 37                       = AID for OID 2.999, which is {joint-iso-itu-t(2) example(999)}
D2 76 00 01 86 F6 07 60 86 48 01 65 64 01        = AID for OID 2.16.840., which is {joint-iso-itu-t(2) country(16) us(840) organization(1) gov(101) 100 1}

Example for an OID that CANNOT be used:

The OID cannot be used because its DER encoding is 13 bytes long.

Subordinate objects

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Alternative Identifiers

guid:005e3ad6-4b3b-8000-a571-9407808dd92eOIDplus Information Object Custom UUID (RFC4122bis) More information
mac:82-2B-A8-3B-87-8FOIDplus Information Object MAC address, Unicast (AAI)
mac:83-2B-A8-3B-87-8FOIDplus Information Object MAC address, Multicast (AAI)
oid: Information Object OID
x500dn:/​dc=com/​dc=example/​cn=oidplus/​​ Information Object X.500 DN

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     aid:D276000186F | -- &quot;Foreign&quot; AID group
          aid:D276000186F6 | -- Short OID based AID
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