ČSN ETSI EN 319 122-2 V1.1.1

The present document specifies CAdES digital signatures. CAdES signatures are built on CMS signatures [i.9], by incorporation of signed and unsigned attributes, which fulfil certain common requirements (such as the long term validity of digital signatures, for instance) in a number of use cases. The present document specifies a number of CAdES signature levels addressing incremental requirements to maintain the validity of the signatures over the long term, in a way that a certain level always addresses all the requirements addressed at levels that are below it. These CAdES extended signatures a higher degree of op-tionality than the CAdES baseline signatures specified in ETSI EN 319 122 1 [1]. Procedures for creation, augmentation, and validation of CAdES digital signatures are out of scope and specified in ETSI EN 319 102-1 [i.5]. Guidance on creation, augmentation and validation of CAdES digital signatures including the usage of the different properties is provided in ETSI TR 119 100 [i.4]. The present document aims at supporting digital signatures in different regulatory frameworks. NOTE: Specifically but not exclusively, CAdES digital signatures specified in the present document aim at sup-porting electronic signatures, advanced electronic signatures, qualified electronic signatures, electronic seals, advanced electronic seals, and qualified electronic seals as per Regulation (EU) No 910/2014 [i.8].