Secured account provisioning and payments for nfc-enabled devices

A system comprising:

• a user computing device comprising a processor and a memory;
• machine-readable instructions stored in the memory that, when executed by the processor, cause the user computing device to at least:
• obtain an account payload, wherein the account payload comprise a payment credential associated with a transaction account of a user of the user computing device;
• generate a storage encryption (ENC) key and a storage message authentication code (MAC) key based on at least a device fingerprint of the user computing device and a storage root key, wherein the storage MAC key comprises a distinct numerical value based on a numerical value contained with the device fingerprint;
• encrypt the account payload with the storage ENC key to form an encrypted account payload;
• generate a digital signature of the encrypted account payload using the storage MAC key;
• and
• store the encrypted account payload and the digital signature in a secured database of the user computing device.

A computer readable storage medium having instructions stored thereon that, in response to execution by a processor of a user computing device, cause the user computing device to at least:

• obtain an account payload, wherein the account payload comprises a payment credential associated with a transaction account of a user of the user computing device;
• generate a storage encryption (ENC) key and a storage message authentication code (MAC) key based on at least a device fingerprint of the user computing device and a storage root key, wherein the storage MAC key comprises a distinct numerical value based on a numerical value contained with the device fingerprint;
• encrypt the account payload with the storage ENC key to form an encrypted account payload;
• generate a digital signature of the encrypted account payload using the storage MAC key;
• and
• store the encrypted account payload and the digital signature in a secured database of the user computing device.