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ETSI TS 119 122-1
M00003519
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ETSI TS 119 122-1 Electronic Signatures and Infrastructures (ESI); CAdES digital signatures; Part 1: Building blocks and CAdES baseline signatures
standard by European Telecommunications Standards Institute, 07/01/2015
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Full Description
ETSI TS 119 122-1 specifies CAdES digital signatures. CAdES signatures are built on CMS signatures [7], byincorporation of signed and unsigned attributes, which fulfil certain common requirements (such as the long termvalidity of digital signatures, for instance) in a number of use cases.The present document specifies the ASN.1 definitions for the aforementioned attributes as well as their usage whenincorporating them to CAdES signatures.
The present document specifies formats for CAdES baseline signatures, which provide the basic features necessary for awide range of business and governmental use cases for electronic procedures and communications to be applicable to awide range of communities when there is a clear need for interoperability of digital signatures used in electronicdocuments.
The present document defines four levels of CAdES baseline signatures addressing incremental requirements tomaintain the validity of the signatures over the long term, in a way that a certain level always addresses all therequirements addressed at levels that are below it. Each level requires the presence of certain CAdES attributes, suitablyprofiled for reducing the optionality as much as possible.