Different electronic signatures
In contrast to the handwritten signature, the electronic signature has three different variants.
- The simple electronic signature
This is the simplest variant. This could include, for example, a signature on paper that has been scanned and then placed as an image to end a letter or email.
- The advanced electronic signature
The advanced electronic signature is also known as the digital signature. This technique uses two codes that are inextricably linked: a public and a private key. These keys are uniquely allocated to a person. Which public key belongs to which person is recorded by a certification service provider in a digital certificate. The person concerned can then sign an electronic file with his private key. The recipient of this file can verify with the corresponding public key whether the message is received without being altered and that the sender is the owner of the corresponding private key.
- The qualified electronic signature
A qualified electronic signature is a signature with a qualified certificate. Such a certificate is a digital file that has been added to the original document. There are special bodies that issue certificates, the so-called certification service providers.