Certifying Signature, sometimes called verification signature, means that users digitally sign documents with their own signature certificates, which means that users (document publishers or authors) authenticate or prove that documents are indeed published and signed by themselves or their own units, which is equivalent to the signature and seal of paper documents or certificates. Therefore, it is generally used for units or individuals to sign various public documents or for various authentication certificates and certification documents, such as official documents or various authentication certificates. Adobe reader will automatically verify the signature information when opening the "authentication signature" file, and will display the identity information of the authentication signer after verification, so as to facilitate readers to identify the identity of the document publisher; If the verification fails, or the signing certificate is not trusted, "There is something wrong with at least one signature" will be displayed.
Secret letter APP is also a tool software for digital signature and encryption of electronic documents, which can be used to digitally sign and encrypt documents. Adobe's global trust and state secret compliance document signature certificate and trusted electronic seal are fully automatically configured, and users can directly complete digital signature and encryption in the Secret Letter APP without uploading the document to be signed to the signature service platform, thus effectively protecting the security of confidential information in electronic documents.
Secret letter APP makes electronic document signature more convenient, safer and more credible.