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• HOW TO CREATE DIGITAL SIGNATURE ON MAC HOW TO

In transit and was signed by a known person. The public key is used to verify the digital signature to make sure the signed document was not altered Of the signed document is still visible to everybody, so we use here some kind of a transparent safe.

Put a document in an imaginable safe and close it with your private key. You use the private key to digitally sign documents. The private key is kept secret and the public key is availableįor everybody. You have two digital keys, one private and one public.Įvery key is just a sequence of bytes. This is exactly how a digital signature works. To open it using his copy of your public key (we assume it is very hard to build a safe, which can Your letter in another safe, closes it and sends it to your friend, than your friend will not be able Letter, he/she can't close the safe anymore (you keep your private key secret). If some third person opens the safe (using your public key) and changes the This is because only your safe can be opened using your public key and you are the only person, whoĬan close your safe. Key, than he can be sure that the letter in the safe is from you and it was not changed in transit. If your friend receives a closed safe and manages to open it using his copy of your public You put the letter in your special safe and send the whole safe to yourįriend. Imagine you want to send a letter to your friend and you want to make sure that the letter will notīe changed during transit. Safe would not make much sense, because everybody can open it. Everybody can have a copy of it and you gave oneĪlso to all your friends. Key which can open the safe, is made public by you. That the key, which can close the safe, is kept in secret by you. With the second key you only can open the safe, but not close it. With the first key you only can close the safe,īut not open it. To create a digital signature you need aĪ public key certificate or identity certificate.įirst I would like to tell you about the concept behind a digital signature.

The signed document was not altered in transit.Īs you can see, a digital signature has two very important advantages over an ordinary electronic The signed document was signed exactly by the person whose name is in the signature.Ģ.

Of an electronic signature which guarantees the following:ġ. Here is where a digital signature comes into play. It is the case for different financial documents, contracts, invoices or if you just Often it is important to know that a document was signed by a known person and it was not altered Is also no guarantee that the text was not tampered in transit. That the document or message was signed by the person, whose name you see in the signature. Unfortunately with simple electronic signatures you don't know for sure, The examples of simple electronic signatures areĪ picture with your handwritten signature embedded in some document or even your name in the end Of an ink signature on normal paper documents.

HOW TO CREATE DIGITAL SIGNATURE ON MAC HOW TO

Contents What is a digital signature and why you may need it? What is a digital certificate? How to generate a digital certificate Buy a certificate from a certificate authority How to create a visible signature How to create an invisible signature Visible signatures in predefined signature fields How to verify a signature What is a digital signature and why you may need it?įirst we start with an electronic signature.Īn electronic signature is an electronic equivalent To skip the theoretical part just go direct to