Abstract: Certain embodiments of the present invention provide a system for data processing anomaly detection including a database including anomaly data and an anomaly processing component adapted to detect a structure anomaly in data based at least in part on the database including anomaly data. The data is meant to be processed by an application including at least one of data structure decoding logic and circuitry after the anomaly processing component has processed the data. The anomaly processing component is adapted to prevent the application from processing the data when a structure anomaly is detected.

Abstract: Certain embodiments of the present invention provide a cryptographic system that enables updates with digital signatures, the signatures being created using an improved digital signature scheme, or using a conventional digital signature scheme that uses a one-way hash function algorithm during digital signature creation and verification, the updates being digitally-signed by a customer in addition to potentially being digitally-signed by a vendor. The updates being either programming instructions or a cryptographic key. The digital signatures associated with the updates being stored in a customer signature repository. The updates being delivered to a customer host along with the associated digital signature retrieved from a customer signature repository. Digital signatures being verified on the customer host using a customer public key. Acceptance of the updates being dependent on successful digital signature verification.