
15.6.3.22 Secure Hash Shift 2 (SHS2)
The SHS2 command does an addition and a set of register to register moves in parallel
for implementing SHA-256. The following source and destination assignments are made:
Register
Value prior to command
Value after command executes
CA7
CA7
CA6
CA6
CA6
CA5
CA5
CA5
CA4
CA4
CA4
CA3+CA8
CA3
CA3
CA2
CA2
CA2
CA1
CA1
CA1
CA0
CA0
CA0
CAA
15.6.3.23 Illegal command (ILL)
The ILL command is a specific illegal command that sets CASR[IC]. All other illegal
commands are reserved for use in future implementations.
15.7 Application/initialization information
This section discusses how to initialize and use the CAU.
15.7.1 Code example
A code fragment is shown below as an example of how the CAU is used. This example
shows the round function of the AES algorithm. Core registers are defined as follows:
• R1 points to the key schedule
• R3 contains 3 direct CAU commands
• R8 contains 2 direct CAU commands
• R9 contains an indirect CAU command
• FP points to the CAU indirect command address space
• IP points to the CAU direct command space
movw fp, #:lower16:MMCAU_PPB_INDIRECT @ fp -> MMCAU_PPB_INDIRECT
movt fp, #:upper16:MMCAU_PPB_INDIRECT
movw ip, #:lower16:MMCAU_PPB_DIRECT @ ip -> MMCAU_PPB_DIRECT
movt ip, #:upper16:MMCAU_PPB_DIRECT
Chapter 15 Cryptographic Acceleration Unit (CAU)
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors
341
Содержание K32 L2A Series
Страница 2: ...K32 L2A Reference Manual Rev 2 01 2020 2 NXP Semiconductors...
Страница 42: ...K32 L2A Reference Manual Rev 2 01 2020 42 NXP Semiconductors...
Страница 122: ...Flash Memory Clock K32 L2A Reference Manual Rev 2 01 2020 122 NXP Semiconductors...
Страница 146: ...Module operation in low power modes K32 L2A Reference Manual Rev 2 01 2020 146 NXP Semiconductors...
Страница 158: ...Debug and security K32 L2A Reference Manual Rev 2 01 2020 158 NXP Semiconductors...
Страница 174: ...Module Signal Description Tables K32 L2A Reference Manual Rev 2 01 2020 174 NXP Semiconductors...
Страница 246: ...Application information K32 L2A Reference Manual Rev 2 01 2020 246 NXP Semiconductors...
Страница 322: ...Kinetis Bootloader Status Error Codes K32 L2A Reference Manual Rev 2 01 2020 322 NXP Semiconductors...
Страница 344: ...Application initialization information K32 L2A Reference Manual Rev 2 01 2020 344 NXP Semiconductors...
Страница 374: ...CMP Trigger Mode K32 L2A Reference Manual Rev 2 01 2020 374 NXP Semiconductors...
Страница 384: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 384 NXP Semiconductors...
Страница 592: ...Application Information K32 L2A Reference Manual Rev 2 01 2020 592 NXP Semiconductors...
Страница 602: ...Initialization and application information K32 L2A Reference Manual Rev 2 01 2020 602 NXP Semiconductors...
Страница 656: ...Functional Description K32 L2A Reference Manual Rev 2 01 2020 656 NXP Semiconductors...
Страница 664: ...Functional Description K32 L2A Reference Manual Rev 2 01 2020 664 NXP Semiconductors...
Страница 744: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 744 NXP Semiconductors...
Страница 762: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 762 NXP Semiconductors...
Страница 806: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 806 NXP Semiconductors...
Страница 868: ...Integer square root K32 L2A Reference Manual Rev 2 01 2020 868 NXP Semiconductors...
Страница 976: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 976 NXP Semiconductors...
Страница 1012: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1012 NXP Semiconductors...
Страница 1094: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1094 NXP Semiconductors...
Страница 1132: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1132 NXP Semiconductors...
Страница 1182: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1182 NXP Semiconductors...
Страница 1290: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1290 NXP Semiconductors...
Страница 1344: ...USB Voltage Regulator Module Signal Descriptions K32 L2A Reference Manual Rev 2 01 2020 1344 NXP Semiconductors...
Страница 1356: ...Initialization Application Information K32 L2A Reference Manual Rev 2 01 2020 1356 NXP Semiconductors...