generateMac

Generates a Message Authentication Code (MAC) cryptogram within Amazon Web Services Payment Cryptography.

You can use this operation when keys won't be shared but mutual data is present on both ends for validation. In this case, known data values are used to generate a MAC on both ends for comparision without sending or receiving data in ciphertext or plaintext. You can use this operation to generate a DUPKT, HMAC or EMV MAC by setting generation attributes and algorithm to the associated values. The MAC generation encryption key must have valid values for KeyUsage such as TR31_M7_HMAC_KEY for HMAC generation, and they key must have KeyModesOfUse set to Generate and Verify.

For information about valid keys for this operation, see Understanding key attributes and Key types for specific data operations in the Amazon Web Services Payment Cryptography User Guide.

Cross-account use: This operation can't be used across different Amazon Web Services accounts.

Related operations:

• VerifyMac