4.2.81 EFMUK (MBMS User Key)
31.1023GPPCharacteristics of the Universal Subscriber Identity Module (USIM) applicationRelease 17TS
If service n°69 is "available", this file shall be present.
This EF contains the identifier of the MBMS User Key (MUK) that is used to protect the transfer of MBMS Service Keys (MSK). The file also contains the Time Stamp Counter associated with the MUK, which is used for Replay Protection in MSK transport messages. This EF shall not contain MUK IDs with the same Idi part.
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Identifier: ‘6FD8’ |
Structure: linear fixed |
Optional |
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Record length: Z bytes |
Update activity: low |
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Access Conditions: READ PIN UPDATE ADM DEACTIVATE ADM ACTIVATE ADM |
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Bytes |
Description |
M/O |
Bytes |
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|
1 to Z |
MBMS User Key TLV objects |
M |
1 to Z |
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MBMS User Key tags
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Description |
Tag Value |
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MUK ID Tag |
‘A0’ |
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Time Stamp Counter Tag |
’81’ |
MBMS User Key information
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Description |
Value |
M/O |
Length (bytes) |
|
MUK ID Tag |
‘A0’ |
M |
1 |
|
Length |
X |
M |
Note |
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MUK Idr Tag |
’80’ |
M |
1 |
|
Lenght |
A |
M |
Note |
|
MUK Idr value |
— |
M |
A |
|
MUK Idi Tag |
’82’ |
M |
1 |
|
Lenght |
W |
M |
Note |
|
MUK Idi Value |
– |
M |
W |
|
Time Stamp Counter Tag |
’81’ |
M |
1 |
|
Length |
Y |
M |
Note |
|
Time Stamp Counter value |
— |
M |
Y |
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Note: The length is coded according to ISO/IEC 8825-1 [35] |
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– MUK ID Tag ‘A0’. This constructed data object consists of the Idr, and the Idi
– Idr Tag ’80’
Content:
Idr part of MBMS User Key (MUK).
Coding:
As defined in TS 33.246 [43]
– Idi Tag ’82’
Content:
Idi part of MBMS User Key (MUK).
Coding:
As defined in TS 33.246 [43]
– Time Stamp Counter Tag ’81’
Content:
Counter for MIKEY replay protection in MSK delivery. The counter is associated with the particular MUK. The length value is defined in TS 33.246 [43].
Coding:
As defined in TS 33.246 [43]
Unused bytes shall be set to ‘FF’.