Electronic Signatures and Infrastructures (ESI); PDF Advanced Electronic Signature Profiles; Part 3: PAdES Enhanced - PAdES-BES and PAdES-EPES Profiles (V1.2.1)
The present document profiles the use of PDF Signatures specified in ISO 32000-1 [1] with an alternative signature encoding to support signature formats equivalent to the signature forms CAdES-BES@ CAdES-EPES and CAdES-T as specified in TS 101 733 [2]. The PAdES-BES profile supports basic CMS (RFC 3852 [4]) signature features as specified TS 102 778-2 [8] with the additional protection against signing certificate substitution. The PAdES-EPES profile extends the PAdES-BES profile to include signature policies. Both profiles@ PAdES-BES and PAdES-EPES allow the inclusion of a signature time stamp creating a signature similar to the CAdES-T form. The present document does not repeat the base requirements of the referenced standards@ but instead aims to disambiguate between the techniques used in the different referenced standards. These profiles are intended to be used by a signer. The present document is part of a series of profiles for advanced electronic signature formats applied to PDF documents. General information the series of profiles is specified in TS 102 778-1 [3]. The requirements specified in the present document take precedence over those specified in ISO 32000-1 [1] and TS 101 733 [2].