Patent ID: 11936776
Assignee: WELLS FARGO BANK, N.A.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 21:
22. A non-transitory computer readable media having computer-executable instructions embodied therein that, when executed by a processor of a computing system, cause the computing system to perform operations comprising:
transmitting a hash-based message authentication code (HMAC) key cryptogram and a transaction scheme to a database encryption key management system, wherein the HMAC key cryptogram is generated by the database encryption key management system, the database encryption key management system is associated with a hardware security module (HSM), the HMAC key cryptogram is received by an entity computing system from the HSM;
receiving a seed generated by the database encryption key management system based on the HMAC key cryptogram and the transaction scheme;
decrypting the seed; and
based on the seed, deriving a transaction key (Tk) by using the seed as an input to a key derivation algorithm (KDF), the KDF is not known to the HSM.