Abstract: Provided is a method, performed by an access authorisation verification apparatus, involving the steps of: obtaining a piece of information from a transmission; identifying a transmission data record using the piece of information obtained from the transmission, wherein the transmission data record comprises address information associated with the transmission; determining an access control apparatus on the basis of a comparison of the address information of the transmission data record with respective address information that is associated with the access control apparatuses and stored on the access authorisation verification apparatus; allowing selection and/or confirmation of an access control apparatus for the determined access control apparatus by a user of the access authorisation verification apparatus; and communicating access authorization information to the access control apparatus in order to gain access to a room associated with the access control apparatus, so that the transmission can be placed

Abstract: Provided is a method for access control, performed by an access control apparatus, including obtaining access authorization information that is communicated to the access control apparatus having at least one access authorization parameter and first check information; using at least the communicated access authorization parameters, the communicated first check information and a second key from a key pair, which second key is stored in the access control apparatus, to perform a first check on whether the communicated first check information has been produced by performing cryptographic operations by means of access authorization parameters corresponding to the communicated access authorization parameters using at least one first key from the key pair, and deciding whether access can be granted, based on the first check delivers a positive result and it is established that at least one predefined set of the communicated access authorization parameters respectively provides access authorization.

Abstract: Provided is a method for access control, performed by an access control apparatus, including obtaining access authorisation information that is communicated to the access control apparatus having at least one access authorization parameter and first check information; using at least the communicated access authorisation parameters, the communicated first check information and a second key from a key pair, which second key is stored in the access control apparatus, to perform a first check on whether the communicated first check information has been produced by performing cryptographic operations by means of access authorisation parameters corresponding to the communicated access authorisation parameters using at least one first key from the key pair, and deciding whether access can be granted, based on the first check delivers a positive result and it is established that at least one predefined set of the communicated access authorisation parameters respectively provides access authorisation.

Abstract: Provided is a method for access control, performed by an access control apparatus, including obtaining access authorization information that is communicated to the access control apparatus having at least one access authorization parameter and first check information; using at least the communicated access authorization parameters, the communicated first check information and a second key from a key pair, which second key is stored in the access control apparatus, to perform a first check on whether the communicated first check information has been produced by performing cryptographic operations by means of access authorization parameters corresponding to the communicated access authorization parameters using at least one first key from the key pair, and deciding whether access can be granted, based on the first check delivers a positive result and it is established that at least one predefined set of the communicated access authorization parameters respectively provides access authorization.

Abstract: A method having the steps of obtaining temporal information communicated to a first device; carrying out one or more of the following tests: a test to determine whether the first device is in a state following an initial operation, a battery replacement or other power outage, or a reset, a test to determine whether a deviation between temporal information of the clock and the communicated temporal information is less than or equal to a threshold which is specified, and a test to determine whether the communicated temporal information has the same date as the temporal information of the clock; and synchronizing the clock using the communicated temporal information if all of one or more defined conditions are satisfied, wherein one of the one or more conditions requires that at least one of the one or more tests carried out has a positive result.

Abstract: Provided is a method, performed by an access authorisation verification apparatus, involving the steps of: obtaining a piece of information from a transmission; identifying a transmission data record using the piece of information obtained from the transmission, wherein the transmission data record comprises address information associated with the transmission; determining an access control apparatus on the basis of a comparison of the address information of the transmission data record with respective address information that is associated with the access control apparatuses and stored on the access authorisation verification apparatus; allowing selection and/or confirmation of an access control apparatus for the determined access control apparatus by a user of the access authorisation verification apparatus; and communicating access authorization information to the access control apparatus in order to gain access to a room associated with the access control apparatus, so that the transmission can be placed

Abstract: A method having the steps of obtaining temporal information communicated to a first device; carrying out one or more of the following tests: a test to determine whether the first device is in a state following an initial operation, a battery replacement or other power outage, or a reset, a test to determine whether a deviation between temporal information of the clock and the communicated temporal information is less than or equal to a threshold which is specified, and a test to determine whether the communicated temporal information has the same date as the temporal information of the clock; and synchronizing the clock using the communicated temporal information if all of one or more defined conditions are satisfied, wherein one of the one or more conditions requires that at least one of the one or more tests carried out has a positive result.

Abstract: Provided is a method for access control, performed by an access control apparatus, including obtaining access authorisation information that is communicated to the access control apparatus having at least one access authorization parameter and first check information; using at least the communicated access authorisation parameters, the communicated first check information and a second key from a key pair, which second key is stored in the access control apparatus, to perform a first check on whether the communicated first check information has been produced by performing cryptographic operations by means of access authorisation parameters corresponding to the communicated access authorisation parameters using at least one first key from the key pair, and deciding whether access can be granted, based on the first check delivers a positive result and it is established that at least one predefined set of the communicated access authorisation parameters respectively provides access authorisation.