Cryptoaesencrypt; Table 10-16: Cryptoaesencrypt Command; Table 10-17: Cryptoaesencrypt Response - Semtech LR1121 User Manual

10.3.8 CryptoAesEncrypt

Command CryptoAesEncrypt(...) encrypts the provided data using the specified Key and returns it. It is to be used
for generic, non-LoRaWAN cryptographic operations, where the Crypto Engine is used as a hardware accelerator, on key
indexes 26 and 27 only (General Purpose keys).

Table 10-16: CryptoAesEncrypt Command

Byte
Data from Host
Data to Host

Table 10-17: CryptoAesEncrypt Response

Byte
Data from Host
Data to Host
• KeyID: Specified Key ID, as defined in
Valid values are from 26 to 27.
• Data1, Data2 to DataN: Provided data, considered as byte buffers.
• CEStatus: Defined in section
• EncryptedData1, EncryptedData2 to EncryptedDataN: Encrypted data, considered as byte buffers.
LR1121
User Manual Rev 1.1
UM.LR1121.W.APP Mar 2023
0 1
0x05 0x08
Stat1 Stat2
0 1
0x00 0x00
Stat1 CEStatus
Table 10-1: Cryptographic Keys Usage and
CEStatus on page 103.
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2 3
KeyID (7:0) Data1
IrqStatus IrqStatus
(31:24) (23:16)
2
0x00
Encrypted
Data1
Derivation.
... N+2
... DataN
... 0x00
... N+1
... 0x00
Encrypted
...
DataN
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