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stm32 /stm32h5 /STM32H573 /SAES /SAES_DOUTR

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Interpret as SAES_DOUTR

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31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0DOUT

Description

SAES data output register

Fields

DOUT

Output data word This read-only bitfield fetches a 32-bit output buffer. A four-fold sequential read of this bitfield, upon the computation completion (CCF set), virtually reads a complete 128-bit block of output data from the SAES peripheral. Before reaching the output buffer, the data produced by the AES core are handled by the data swap block according to the DATATYPE[1:0] bitfield. Data weights from the first to the fourth read operation are: [127:96], [95:64], [63:32], and [31:0]. The data signification of the output data block depends on the SAES operating mode:

  • Mode 1 (encryption): ciphertext
  • Mode 2 (key derivation): the bitfield is not used
  • Mode 3 (decryption): plaintext The data swap operation is described in on page 1149.

Links

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Register Reference

https://github.com/modm-io/cmsis-svd-stm32