SI1034-A-GM 参数 Datasheet PDF下载

Si102x/3x

14.6. Block Cipher Modes

14.6.1. Cipher Block Chaining Mode

The Cipher Block Chaining (CBC) algorithm significantly improves the strength of basic AES encryption by

making each block encryption be a function of the previous block in addition to the current plaintext and

key. This algorithm is shown inFigure 14.4

Plain Text

Plain Text

Initialization Vector (IV)

XOR

XOR

Encryption

Encryption

Key

Encryption

Cipher

Encryption

Key

Encryption

Cipher

Cipher Text

Cipher Text

Cipher Text

Cipher Text

Decryption

Decryption

Key

Decryption

Cipher

Decryption

Key

Decryption

Cipher

Initialization Vector (IV)

XOR

XOR

Plain Text

Plain Text

Figure 14.4. Cipher Block Chaining Mode

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