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Although cloud storage offers a number of attractive features, it also raises various security concerns. In particular, cloud storage of sensitive information, such as medical or trade records, requires measures to be taken not only for privacy protection, but also for assured deletion and verifiable version control. Even though there are methods for realizing both assured deletion and version control...
A hi-speed system to execute certification path validation of the X.509 Certificate was developed. The algorithm used not only certificates and certificate revocation information but also certification path information as cached information in order to speed up transactions. The effect of it was confirmed by the performance experiment of the certification path validation system in test and real environment.
This paper propose an algorithm using multiple cryptographic modules to speed up a certification path validation of the X.509 Certificate. The algorithm used not only software cryptographic module but also hardware cryptographic modules in order to speed up transactions. The effect of it was confirmed by the experiment of the server system that had the fast algorithm of certification path validation...
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