ETSI TS 119 132-2规定了XAdES数字签名。XAdES签名基于XML数字签名[i.4]， 通过合并符合某些共同要求（例如 例如，数字签名的长期有效性）在许多用例中。本文件规定了若干XAdES签名级别，以满足维护的增量需求 签名的长期有效性，某种程度上始终满足所有要求 以低于它的级别进行处理。 这些XAdES扩展签名提供了比原始签名更高的可选性 XAdES基线签名指定ETSI TS 119 132-1[1]。本文件旨在支持不同监管框架下的电子签名。

ETSI TS 119 132-2 specifies XAdES digital signatures. XAdES signatures are built on XML digital signatures [i.4], by incorporation of signed and unsigned qualifying properties, 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 XAdES 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 XAdES extended signatures offer a higher degree of optionality than the XAdES baseline signatures specified ETSI TS 119 132-1 [1].The present document aims at supporting electronic signatures in different regulatory frameworks.