Patent ID: 11930125
Assignee: ENTRUST CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A system comprising:
a first root certificate authority comprising a first node, the first root certificate authority being configured to generate a first root certificate;
a second root certificate authority comprising a second node capable of communication with the first node, the second root certificate authority being configured to generate a second root certificate;
wherein:
the first root certificate includes an identity of the first root certificate authority, a first key identifier associated with a first key associated with the first root certificate authority, an identity of a first digital signature algorithm, and at least one extension including a second key identifier of a second key associated with the second root certificate authority and an identity of a second digital signature algorithm used by the second root certificate authority;
the second root certificate includes an identity of the second root certificate authority, the second key identifier, an identity of a second digital signature algorithm, and at least one extension including the first key identifier and an identity of the first digital signature algorithm; and
the second digital signature algorithm is different from the first digital signature algorithm.