Method of extending the validity of a cryptographic certificate
作者： Wakefield Scott Stornetta , Stuart Alan Haber
DOI:
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摘要: A cryptographic certificate attesting to the authenticity of original document elements will lose its validity when function underlying certifying scheme is compromised. The present invention extends reliability such a by subjecting combination and digital representation based on less vulnerable using steps of: obtaining (11); applying create (13); combining (15); and, another an extended (17).
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