Patent ID: 11909893
Assignee: ENTRUST CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A composite encryption system comprising:
a first computing system including a processor communicatively coupled to a memory, the memory storing instructions which, when executed by the processor, cause the first computing system to:
determine a number N of different, independent encryption algorithms used at the first computing system and at a second computing system, wherein N is an integer greater than or equal to two, the N encryption algorithms being associated with N encryption keys received in a certificate;
generate a different secret associated with an associated encryption algorithm for each of N-1 of the N encryption algorithms, thereby forming N-1 secrets;
perform an exclusive-or operation on a combination of a content and the N-1 secrets to form encoded content;
encrypt each of the N-1 secrets with the associated encryption algorithm from among the N-1 encryption algorithms using N-1 encryption keys of the N encryption keys to form encrypted N-1 secrets;
encrypt the encoded content with the Nth encryption algorithm using the Nth encryption key to form encrypted encoded content; and
transmit, to the second computing system, a composite encrypted key comprising each of the encrypted N-1 secrets and the encrypted encoded content.