Abstract: A method for processing a memory page, the method includes: retrieving, in response to a request to provide a first memory page to a processor, first memory page metadata associated with first memory page address information; wherein the first memory page address information is stored in a memory page table; and performing a page operation in response to the memory page metadata; wherein the page operation is selected from a group consisting of compression, cryptography, searching a page for a virus signature, searching a page for digital right management signature, error correction code verification, error correction code addition.

Abstract: A signer uses an undeniable signature scheme to sign his public key to thereby create an “undeniable certificate” which can be used to verify the signer's digital signature on any message signed using the signer's corresponding private key. Hence, once the undeniable certificate is received by the recipient, the recipient and the signer engage one time in a confirmation protocol or denial protocol to the satisfaction of the recipient that the undeniable certificate has in fact been signed by the signer thus certifying signer's public key. Thereafter, the recipient can use the certified public key to verify any documents signed by the signer with no further interaction with the signer. However, third parties are precluded from verifying the signer's signature since they do not possess the confirmed undeniable certificate and corresponding public key.

Abstract: A method for providing a digital signature, "chameleon signatures", which provide the signer of a digital signature exclusive control to disclose the contents of the signed information to third parties. The signatures are closely related to "undeniable signatures", but allow for simpler and more efficient realizations. The method is essentially non-interactive requiring no communication between sender and receiver and do not involve the design and complexity of zero knowledge proofs on which traditional undeniable signatures are based. The method employs a combination of standard digital signing methods with a unique hash functions. These hash functions are characterized by the non-standard property of being collision resistant for the signer but collision tractable for the recipient.

Abstract: A method and system for detecting authorized programs within a data processing system. The present invention creates a validation structure for validating a program. The validation structure is embedded in the program and in response to an initiation of the program, a determination is made as to whether the program is an authorized program. The determination is made using the validation structure.

Abstract: A method and system for detecting authorized programs within a data processing system. The present invention creates a validation structure for validating a program. The validation structure is embedded in the program and in response to an initiation of the program, a determination is made as to whether the program is an authorized program. The determination is made using the validation structure.