an invoice signed electronically. Law 59/2003 of electronic signature equates, legally, the electronic signature for signature on paper, giving it full legal validity to electronic transactions public and private; and in Royal Decree 1496 / 2003 of 28 November, determines the possibility of sending invoices by electronic means. If we have the public key of the certificate of the electronic signature we can verify that the invoice sent really comes from the sender. In addition, a Bill signed electronically without altering the encryption and void the invoice cannot be modified. Therefore, it is the safest way to issue and receive invoices, without entering here into other advantages of the invoice Electronics, such as the saving of expenses of management of the same and the flexibility that implies having a bill whose information can be exploited in the most various ways in our business processes. The Mission of the authorities of certification Finally, the certification authorities are also responsible for the management of signed certificates. This includes the tasks of revocation of certificates which may urge the holder of the certificate or any third party with legitimate interest to the certification authority by e-mail, phone or face-to-face intervention. The list called CRL (certificate revocation list) contains certificates that fall into this category, so it is responsibility of the certification authority to publish it and update it properly.

On the other hand, another task to be performed by a certification authority is the management associated with certificate renewal by expiration or revocation. You are also advised to stop erotic chats viagra cheap india online. Low levels of testosterone can be caused by daily habits, viagra vs cialis underlying medical conditions or physical problems. It is always best to stores for viagra understand how it works you need to understand the mechanics of how a man gets an erection. This purchase tadalafil online has no difference to the viagra. If the certification authority issues many certificates, run the risk that their CRLS are of large size, making it impractical to download for third parties who rely. That’s why they develop alternative consultative mechanisms of validity of certificates, such as OCSP and SCVP protocol-based servers. Certification authority server end-entity certificates and people sometimes designate people (and then refers qualified certificates) and sometimes they identify web servers (and then the certificates are used within the SSL protocol so that communications with the server are protected with robust encryption 128-bit) public certification authorities and a private certification authority can be either public or private. The certificates of certification authorities (root certificates) of public authorities of certifications may or may not be installed in browsers but are recognized as trusted entities, often according to the rules of the country in which they operate. The public certification authorities issue certificates for the general population (although sometimes are targeted toward any group in particular) and in addition to sign the certification authority of other organizations. Certification authorities in the European Union article 11 of the Directive 1999/93CE of electronic signature establishes that Member countries notify the Commission and the other Member States the following: information about volunteers of accreditation national schemes, including any additional requirements in accordance with article 3 (7). Names and addresses of the bodies national responsible for the accreditation and supervision, as well as the agencies to which refers article 3 (4). Here comes the first part. In the second we focus on elaborate how the digital certificate and the certified scanning of invoices are complemented.