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.
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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.