Patent ID: 11956345
Assignee: CRYPTOGRAPHY RESEARCH, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 18:
19. A system to perform a cryptographic operation, the system comprising:
a memory device; and
a processor coupled to the memory device to:
obtain a first cryptographic key;
receive a key diversification information (KDI) comprising n strings of bits;
obtain an expanded key diversification information (EKDI), comprising n blocks of bits, wherein a j-th block of the n blocks of bits is obtained from a j-th string of the n strings of the KDI and a length of the j-th block of the EKDI is greater than a length of the j-th string of the KDI; and
apply a key derivation function to the first cryptographic key and the EKDI to obtain a second cryptographic key.