15.3. The technological structure used for the electronic transmission of documents to the registry office shall be established in accordance with international or internationally recognized recommendations and standards, and more specifically, at a minimum, with the following criteria or criteria that are at least equivalent;
(1) International Telecommunication Union (ITU) Recommendation X.500 (11/93), in general, adopted as an international standard by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC) under the general designation of ISO/IEC 9594: 1995, for the management of the directory containing the information relating to the certificates and public keys that form an integral part of key pairs;
(2) ITU Recommendation X.509 (11/93), in particular, adopted as an international standard by ISO and IEC under the designation ISO/IEC 9594-8: 1995 Information Technology — Open systems interconnection (OSI) — The Directory: Authentication framework, for the issue and storage of key pairs and signature verification and encryption certificates;
(3) American National Standards Institute (ANSI) Standard X12 for data format and markup;
(4) The American federal government’s National Institute of Standards and Technology (NIST) Standard FIPS 140-1 for the DES, DSA and SHA-1 algorithms used in cryptography; and
(5) ISO/IEC 8859-1: 1988 graphic character sets (Latin alphabet No. 1) for the processing and storage of documents and their printing or conversion into hard copy.