CAN/CSA-ISO/IEC 18014-2:04 (R2007)

This National Standard of Canada is equivalent to International Standard ISO/IEC 18014-2:2002 (first edition, 2002-12-15). 1. Scope 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.