SI1034-A-GM 参数 Datasheet PDF下载

Si102x/3x

14.4. AES Block Cipher Data Flow

The AES0 module data flow for AES Block Cipher encryption and decryption shown in Figure 14.3. The

data flow is the same for encryption and decryption. The AES0DCF SFR is always configured to route the

AES core output to AES0YOUT. The XOR on the input and output paths are not used.

For an encryption operation, the core is configured for an encryption cipher, the encryption key is written to

AES0KIN, the plaintext is written to the AES0BIN

SFR

. and the ciphertext is read from AES0YOUT.

For a decryption operation, the core is configured for an decryption cipher, the decryption key is written to

AES0KIN, the ciphertext is written to the AES0BIN

SFR

. and the plaintext is read from AES0YOUT.

The key size is set to the desired key size.

AES0BIN

internal state

machine

AES0XIN

+

AES0DCFG

Data In

AES0KIN

Key

In

AES

Core

Data Out

Key

Out

AES0BCFG

+

AES0YOUT

Figure 14.3. AES Block Cipher Data Flow

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Rev. 0.3