Method for providing an authenticated connection between at least two communication partners

A communication system, comprising:

• at least two communication partners,
• wherein the at least two communication partners are configured to set up an anonymous signal-conducting connection to one another,
• wherein a second communication partner of the at least two communication partners is configured to check an authenticity of a signed certificate used by a first communication partner of the at least two communication partners and to display a first authentication code after the check of the authenticity of the signed certificate used by the first communication partner has been carried out, and wherein the first communication partner is configured to display a second authentication code on a display device of the first communication partner to allow a user to confirm a match of the first and second authentication codes displayed by the first and second communication partners by the first communication partner,
• wherein the first communication partner is a vehicle-internal device, and the second authentication code displayed by the first communication partner is a vehicle-related code,
• wherein the signed certificate used by the first communication partner is signed with a signature certificate and the signature certificate is available to the second communication partner, and
• wherein checking the authenticity of the signed certificate used by the first communication partner by the second communication partner comprises checking, by the second communication partner, the signed certificate used by the first communication partner with the signature certificate available to the second communication partner.

A non-transitory computer readable medium comprising:

• a program including program code for carrying out a method for providing an authenticated connection between at least two communication partners when the program code is executed on a computer, on a processor, on a control module or on a programmable hardware component, the method comprising:
• setting up an anonymous signal-conducting connection between the at least two communication partners;
• checking an authenticity of a signed certificate used by a first communication partner of the at least two communication partners by a second communication partner of the at least two communication partners;
• displaying a first authentication code by the second communication partner after the check of the authenticity of the signed certificate used by the first communication partner has been carried out;
• displaying a second authentication code by the first communication partner by a display device of the first communication partner;
• comparing the first and second authentication codes displayed by the first and second communication partners;
• and
• confirming the first and second authentication codes displayed by the first and second communication partners match by a user,
• wherein the first communication partner is a vehicle-internal device, and the second authentication code displayed by the first communication partner is a vehicle identification number unique to a vehicle associated with the first communication partner,
• wherein the signed certificate used by the first communication partner is signed with a signature certificate and the signature certificate is available to the second communication partner, and
• wherein checking the authenticity of the signed certificate used by the first communication partner by the second communication partner comprises checking, by the second communication partner, the signed certificate used by the first communication partner with the signature certificate available to the second communication partner.