Virtual Machine Execution Control via Electronic Signature Verification

The patent applies preliminary action by verifying the electronic signature and condition information before executing the virtual machine program. The processing unit checks whether the virtual machine can be operated according to the associated condition information (such as usage quantity limits, time restrictions, or region constraints) and only executes the program if the verification passes. This prevents unauthorized or invalid executions while maintaining functional expansion.

The patent uses an intermediary approach by introducing condition information and electronic signatures as intermediary elements between the virtual machine program and the execution control. These intermediaries carry the verification data and execution conditions, allowing the processing unit to make informed decisions about program execution without requiring complex built-in verification mechanisms in the virtual machine itself. The condition information acts as a mediator that simplifies the security verification process.

The patent applies beforehand cushioning by implementing atomicity guarantees for data writing operations before actual writing occurs. The system ensures that data writing operations are performed atomically (all-or-nothing basis) and maintains verification of execution conditions prior to execution. This prevents partial or corrupted writes while maintaining efficient processing by using proper atomic operations rather than redundant verification during execution.