![]() If the independent audit confirms the entire process of signature application, and the use of trust centers for key distribution and administration – then the signature also fulfills the requirements of a qualified digital signature. ![]() You can also have the issuer of the certificate verified by an independent agency. If the checksum correlates with the file, then the signature is valid. If the decryption with the attached public key is successful, then it is proof that the certificate is true – and is the one that received the checksum. ![]() The public key is attached to the certificate. In this case, the private key and the public key are used in the opposite way as compared with the data encryption: A checksum that has been generated from the document which describes the document is encoded with the private key of the signing party. The signature only serves to securely determine the author or the organization that has issued the document. A digital signature does not necessarily mean that the signed content is encrypted. ![]()
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