4.2.78 EFVBSCA (Voice Broadcast Service Ciphering Algorithm)
31.1023GPPCharacteristics of the Universal Subscriber Identity Module (USIM) applicationRelease 17TS
If service n°65 is "available", this file shall be present.
This EF contains the ciphering algorithm identifiers for each of the Master Group Key (V_Ki) of each VBS group that the user has subscribed to (defined in EFVBS).
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Identifier: ‘6FD5’ |
Structure: transparent |
Optional |
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File size: 2n bytes, (1 ≤ n ≤ 50) |
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 |
Length |
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1 |
VBS Group ciphering algorithm identifier for 1st V_Ki of Group 1 |
M |
1 byte |
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2 |
VBS Group ciphering algorithm identifier for 2nd V_Ki of Group 1 |
M |
1 byte |
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3 |
VBS Group ciphering algorithm identifier for 1st V_Ki of Group 2 |
O |
1 byte |
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4 |
VBS Group ciphering algorithm identifier for 2nd V_Ki of Group 2 |
O |
1 byte |
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: |
: |
: |
: |
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2n-1 |
VBS Group ciphering algorithm identifier for 1st V_Ki of Group n |
O |
1 byte |
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2n |
VBS Group ciphering algorithm identifier for 2nd V_Ki of Group n |
O |
1 byte |
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Ciphering Algorithm Identifier:
Contents: Ciphering Algorithm identifier for the specified Master Group Key of each Voice Broadcast Group
Coding: See coding of EFVGCSCA