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

Claim 19:
20. A system comprising:
a recipient computing system including a processor communicatively coupled to a memory, the memory storing instructions which, when executed by the processor, cause the recipient computing system to:
receive, from a remote computing system, a composite encrypted key, the recipient computing system and the remote computing system using a number N of different, independent encryption algorithms using N key pairs, each key pair of the N key pairs including an encryption key and a decryption key, the encryption key of all of the N key pairs being included in a certificate, wherein the composite encrypted key includes N-1 encrypted secrets and encrypted encoded content and N is an integer greater than or equal to two;
decrypt, at the recipient computing system, each of the N-1 encrypted secrets with an associated one of N-1 associated encryption algorithms of the N encryption algorithms using N-1 of the N decryption keys to obtain N-1 secrets;
decrypt, at the recipient computing system, the encrypted encoded content with a remaining Nth encryption algorithm and Nth decryption key of the N encryption algorithms to obtain encoded content; and
perform, at the recipient computing system, an exclusive-or operation on the encoded content with each of the N-1 secrets to decode the content.