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Upgrades the signature to an archival one.
Declaration
Parameters
Description
Call this method to upgrade the signature to CAdES-A. An archival signature builds on a CAdES-X-L or CAdES-X-L with time by adding one or more archival timestamps. This form is used for archival of long-term signatures; whole signature material is protected against vulnerable hashing algorithms and breakage of the cryptographic material or algorithms.