A new compromise-resilient and compact cryptographic tool is provided that ensures a breach-resilient authentication and integrity of system measurements in computer systems. The described methods are forward-secure digital signatures with signature and partial public key aggregation capabilities. The methods reduce the total space overhead of signature and public key storage. The methods offer a high space efficiency for systems who has relatively low state transitions, wherein the same message is continuously signed and then followed by different messages.Our proposed technology addresses many of the concerns in state-of-the-art cryptographic techniques. The coding tools ensure breach-resilience while also reducing overhead space of signature and public key storage. The methods will ensure that the system maintains a high level of space efficiency which is critical when large amounts of data are collected. This technology can be useful to security monitoring applications such as those that involve digital archives, security sensor/camera measurements, and personal bank accounts. Implementation of the proposed cryptographic tools will assist in protecting computer systems from digital crimes and attacks.
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