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ANSI X9.95-2016


Trusted Time Stamp Management and Security

This standard specifies the minimum security requirements for the effective use of time stamps in a financial services environment. Within the scope of this Standard the following topics are addressed: Requirements for the secure management of the time stamp token across its life cycle, comprised of the generation, transmission and storage, validation, and renewal processes. The requirements in this Standard identify the means to securely and verifiably distribute time from a national time source down to the application level. Requirements for the secure management of a Time Stamp Authority (TSA) Requirements of a TSA to ensure that an independent third party can audit and validate the controls over the use of a time stamp process Techniques for the coding, encapsulation, transmission, storage, integrity and privacy protection of time stamp data Usage of time stamp technology Items considered out of scope and not addressed in this Standard include the following: Requirements for a National Timing Authority imposed by the International Timing Authority Application specific requirements and limitations for employing time stamp technology The individualÆs privacy and ownership of time stamp data Although this standard focuses on the financial services industry, it may be applied to other applications where the management and security of time stamps are necessary.

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