33. Cryp_sm4_cbc

33.1. Function description:

This demo shows the operation of cryptographic processor, algorithm is SM4, algorithm mode including CBC, appending data using the CPU in polling mode.

  • Configure SM4 algorithm and prepare the plaintext data firstly, then start the encryption to get ciphertext data.

  • Compare the encryption result with the standard to verify the function of encryption.

  • Configure & prepare the key for decryption.

  • Configure SM4 algorithm firstly, then start the decryption, the ciphertext data is comming from encryption result.

  • Compare the decryption result with the plaintext to verify the function of decryption.

Note

For SM4_CBC mode decryption, the key has to be prepared firstly.

33.2. Test result:

After the operation of encryption and decryption, if the encryption data is same as the standard & the decryption result is same as the plaintext data, then print pass, if not print fail.

33.3. IO connection:

None