Struct k210_pac::aes::RegisterBlock

#[repr(C)]
pub struct RegisterBlock {
    pub key: [KEY; 4],
    pub encrypt_sel: ENCRYPT_SEL,
    pub mode_ctl: MODE_CTL,
    pub iv: [IV; 4],
    pub endian: ENDIAN,
    pub finish: FINISH,
    pub dma_sel: DMA_SEL,
    pub aad_num: AAD_NUM,
    pub pc_num: PC_NUM,
    pub text_data: TEXT_DATA,
    pub aad_data: AAD_DATA,
    pub tag_chk: TAG_CHK,
    pub data_in_flag: DATA_IN_FLAG,
    pub gcm_in_tag: [GCM_IN_TAG; 4],
    pub out_data: OUT_DATA,
    pub en: EN,
    pub data_out_flag: DATA_OUT_FLAG,
    pub tag_in_flag: TAG_IN_FLAG,
    pub tag_clear: TAG_CLEAR,
    pub gcm_out_tag: [GCM_OUT_TAG; 4],
    pub key_ext: [KEY_EXT; 4],
    // some fields omitted
}

Register block

Fields

key: [KEY; 4]

0x00 - 1st-4th word of key

encrypt_sel: ENCRYPT_SEL

0x10 - Encryption or decryption select

mode_ctl: MODE_CTL

0x14 - AES mode register

iv: [IV; 4]

0x18 - Initialisation Vector (96 bit for GCM, 128 bit for CBC)

endian: ENDIAN

0x28 - Endian control

finish: FINISH

0x2c - Finished status

dma_sel: DMA_SEL

0x30 - DMA select

aad_num: AAD_NUM

0x34 - GCM additional authenticated data count in bytes, minus one

pc_num: PC_NUM

0x3c - Plaintext/ciphertext input data count in bytes, minus one

text_data: TEXT_DATA

0x40 - Plaintext/ciphertext input data

aad_data: AAD_DATA

0x44 - Additional authenticated data

tag_chk: TAG_CHK

0x48 - Tag check status

data_in_flag: DATA_IN_FLAG

0x4c - Data can input flag

gcm_in_tag: [GCM_IN_TAG; 4]

0x50 - GCM input tag for comparison with the calculated tag

out_data: OUT_DATA

0x60 - Plaintext/ciphertext output data

en: EN

0x64 - AES module enable

data_out_flag: DATA_OUT_FLAG

0x68 - Data can output flag

tag_in_flag: TAG_IN_FLAG

0x6c - Can input tag (when using GCM)

tag_clear: TAG_CLEAR

0x70 - Tag clear (a write to this register clears the tag_chk status)

gcm_out_tag: [GCM_OUT_TAG; 4]

0x74 - Computed GCM output tag

key_ext: [KEY_EXT; 4]

0x84 - 5th-8th word of key