47. Cryp_sm4_gcm

47.1. Function description:

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

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

  • Compare the encryption & tag result with the standard to verify the function of encryption

  • 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.

47.2. 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.

47.3. IO connection:

None