Cryptoverifyaescmac; Table 12-10: Cryptocomputeaescmac Command Example; Table 12-11: Cryptocomputeaescmac Response Example; Table 12-12: Cryptoverifyaescmac Command - Semtech LR1110 User Manual

For example, when using the test vectors of the RFC4493 example 2, we would have:
•
Message: 6bc1bee2 2e409f96 e93d7e11 7393172a (N=16)
•
MIC: 070a16b4
Therefore, the CryptoComputeAesCmac( ) command and response will be:

Table 12-10: CryptoComputeAesCmac Command Example

Byte
Data from Host
Data to Host

Table 12-11: CryptoComputeAesCmac Response Example

Byte 0
Data from Host 0x00
Data to Host Stat1

12.3.6 CryptoVerifyAesCmac

The command CryptoVerifyAesCmac( ) will compute the AES CMAC of the provided data using the specified Key, and
compare the provided MIC with the actual calculated MIC (first 4 bytes of the CMAC).

Table 12-12: CryptoVerifyAesCmac Command

Byte 0
Data from Host 0x05
Data to Host Stat1

Table 12-13: CryptoVerifyAesCmac

Byte
Data from Host
Data to Host
•
KeyID: specified Key ID, as defined in
•
ExpectedMIC: Provided MIC (first 4 bytes of the CMAC).
LR1110
User Manual Rev.1.0
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0 1
KeyID
0x05 0x05
(7:0)
IrqStatus
Stat1 Stat2
(31:24)
1
0x00
CEStatus
1 2 3
Exp.
KeyID
0x06
(7:0)
MIC1
Irq Irq
Stat2
Status Status
(31:24) (23:16)
0 1
0x00 0x00
Stat1 CEStatus
Table 12-1: Cryptographic Keys Usage and
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2 3 4
0x6b 0xc1
IrqStatus IrqStatus
(23:16) (15:8)
2 3
0x00 0x00
0x07 0x0a
4 5
Exp. Exp
MIC2 MIC3
Irq Irq
Status Status
(15:8) (7:0)
5 ...
0xbe ...
IrqStatus
...
(7:0)
4
0x00
0x16
6 7 ...
Exp
Data1 ...
MIC4
0x00 0x00 ...
Derivation. Goes from 0 to 27.
N+3
0x2a
0x00
5
0x00
0xb4
N+7
DataN
0x00
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