ISO/IEC 18014Information technology — Security techniques — Time-stamping services is an international standard that specifies time-stamping techniques. It comprises four parts:
Part 2: Mechanisms producing independent tokensedit
A time-stamping service provides evidence that a data item existed before a certain point in time. Time-stamp services produce time-stamp tokens, which are data structures containing a verifiable cryptographic binding between a data item's representation and a time-value. This part of ISO/IEC 18014 defines time-stamping mechanisms that produce independent tokens, which can be verified one by one.
Part 3: Mechanisms producing linked tokensedit
This part of ISO/IEC 18014:
Describes a general model for time-stamping services producing linked tokens.
Describes the basic components used to construct a time-stamping service of this type.
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