From April 27, 2022, the Guidelines for connecting digital signature applications with public digital signature certification service providers regarding remote signing takes effect as prescribed in the Decision No. 769/QD-BTTT of the Ministry of Information and Communications.
Accordingly, these Guidelines are specifications of connection protocols for transferring a certificate signing request (CSR) from a network-connected service/application (service provider - SP) to a Certificate Authority (CA) and receiving the digital certificate of the signer as well as the result of digital signing.
Those protocols can be applied to other user actions (registration, login...). These Guidelines are not applicable to services/applications that have integrated digital signing functions, or digital signing software.
In case the specialized law provisions otherwise prescribe the format of data, they shall prevail.