Abstract: The invention relates to a value document having luminescent, particulate agglomerates which respectively include at least two different, luminescent, solid homogeneous phases emitting at a first and a second emission wavelength, respectively, wherein upon an evaluation of measurement values that are obtainable by a measurement of the first luminescence intensity at the first emission wavelength and of the second luminescence intensity at the second emission wavelength, said measurement being location-specific and carried out at different locations, a statistical correlation is present between the first luminescence intensities and the second luminescence intensities.

Abstract: A method and a system for secure transfer of an application from a server (S) into a reading device unit (2) with authentication of a user with a data carrier unit (1), the server (S) making available the application, wherein, between the data carrier unit (1) and the server (S), a first cryptographically secured channel (K1) is set up based on first cryptographic information (A), and between a security module (3) of the reading device unit (2) and the server (S) a second cryptographically secured channel (K2) is set up based on second cryptographic information (B). The application is transferred from the server to the reading device unit via the second cryptographically secured channel (K2).

Abstract: Chip card processor P and display controller C of chip card 1 with a display are realized in single chip 5 and the chip 5 is disposed on same substrate 4 on which display 2 is built up. This eliminates the need for connecting leads and contactings between the display controller and the processor chip. Display 2 and chip 5 form one mechanical unit and it is unnecessary to install processor chip P. Preferably, display substrate 4 extends with processor chip P, or at least with conductive paths leading to processor chip P, under contact pad 3 of chip card 1.

Abstract: A method for contactlessly checking the functionality of an antenna coil for a portable data carrier comprises the steps of exciting the antenna coil, detecting the free, damped oscillation of the antenna coil in response to the excitation, and evaluating the detected free, damped oscillation. The excitation of the antenna coil is effected inductively through a pulsed magnetic field, which may be generated by a single direct-current pulse, such as a Dirac pulse, by means of an exciting coil attached to a pulse generator. The detection of the oscillation of the antenna coil is effected through a measuring antenna, and the evaluation is effected by means of an evaluation device connected to the measuring antenna.

Abstract: The present invention relates to a security element composed of at least one light-transmitting substrate on which a substantially opaque, screened layer composed of grid elements is located. According to the present invention, within the substantially opaque, screened layer composed of grid elements, at least one thin, solid, substantially opaque line is arranged that exhibits the form of at least one alphanumeric character, a graphic or a pattern. Such lines have line widths of at least 0.1 mm to 5 mm, preferably of 0.2 mm to 0.7 mm, particularly preferably of about 0.5 mm. Instead of lines, also extensive regions without any gap may be used, such that the alphanumeric character, pattern or graphic formed is perceptible only in transmitted light, but not in reflected light. The security element thus displays, at least when viewed from the side of the substantially opaque, screened layer, in top view, a different appearance than when looked through.

Abstract: The invention relates to a checking unit for checking a material web and to a calibrating method for the checking unit. The checking unit is equipped with drive means for transporting the calibration medium past the checking unit in order to detect a multiplicity of measurement values of the calibration medium. The drive means are arranged in the housing of the checking unit in order for the drive means to be protected from moisture or contaminants from the environment. To obtain a transporting of the calibration medium past the checking unit in spite of the arrangement of the drive means in the housing, drive means are employed that are configured for a contactless interaction with the calibration medium and can transport the calibration medium past the checking unit contactlessly. For this purpose there is preferably used a magnetic interaction between the drive means and the calibration medium.

Abstract: The invention provides a method for programming a chip for a mobile end device, wherein, in a preparatory step, a serial number is programmed into the chip and thereafter, in a programming step, the serial number is verified and a programming of at least one further datum into the chip is only carried out if the serial number has been successfully verified. The serial number is verified here by means of a security module (HSM), while employing a secret information item stored in the security module (HSM) and different from the serial number.

Abstract: In a method in a portable data carrier for securing the data carrier against external attacks on the data carrier, there is employed at least one counter in the data carrier. A specified command is secured here such that it is executed by the data carrier only when the at least one counter lies in a specified, permissible values range, in particular does not undershoot a specified minimum value. The at least one counter is actuated, normally decremented, according to the invention when it is recognized on the basis of a rollback buffer of the data carrier that a preceding execution of a command has been disturbed.

Abstract: A method for supplying visually encoded image data for displaying through a mobile end device includes supplying a datum. A device type of the end device is ascertained on the basis of a user identity which is assigned to a security element integrated into the end device. On the basis of the device type of the end device, the device properties of the end device are ascertained which influence a displaying of visually encoded image data on the end device. On the basis of the ascertained device properties, an image data representation information item is generated for generating visually encoded image data for the end device in device-specific fashion. Finally, the visually encoded image data are generated based on the image data representation information item in device-specific fashion for representing the datum on the end device.

Abstract: The invention relates to a data carrier having a semiconductor chip. In order to prevent an attacker from determining secret data of the chip from intercepted signal patterns of the chip, security-relevant operations are performed only with commands or command strings of the operating program whose use does not permit the processed data to be inferred from the signal patterns.

Abstract: A method for checking the soiling of the windows of a measuring apparatus for checking sheet material, includes having at least two sensor rows oriented transversally to the transport direction of the sheet material. Each of the sensor rows detects the light emanating from the sheet material in a certain spectral channel. For checking the soiling of the window the sensor rows detect the light at several detection times at which no sheet material is present in the capture area of the sensor rows. At least two of the spectral channels are combined with each other and the temporal variation of the intensities of the combined spectral channel is evaluated for the purpose of the soiling check. A small temporal variation of the intensity of the combined spectral channel is employed as an indicator for the presence of a soiling of the window.

Abstract: A method is for manufacturing a stiff, multilayered card body for a portable data carrier, has steps including: making available a layer of an opaque plastic, making available a carbon fiber layer of carbon fiber fabric, impregnating the carbon fiber layer with epoxy resin, fusing the layers to form a half-product, printing the upper side of the carbon fiber layer of the half-product with a graphic pattern in a screen printing process or an offset printing process, laminating a plastic layer onto the printed upper side, and detaching the card body from the half product by means of a separating tool guided relative to the half-product along a path describing the edge contour of the card body.

Abstract: The present invention relates to a thin-film element (30) having an interference layer structure for security papers, value documents and the like, having at least two semitransparent absorber layers (34, 38) and at least one dielectric spacing layer (36) arranged between the at least two absorber layers. According to the present invention, it is provided that the two absorber layers (34, 38) are each formed from a material having a complex refractive index N whose real part n and imaginary part k differ at least in a portion of the visible spectral range by a factor of 5 or more.

Abstract: Methods and a system involve secure communication between an RFID tag and a reader via the over-the-air interface, and to corresponding RFID tags and corresponding readers. A modification of the Rabin method is employed wherein within the framework of the encryption of a plaintext M into which an identification element of the RFID tag or of an object furnished therewith is incorporated, there is computed by the RFID tag, the Montgomery residue (Montgomery reduction) of the square of the plaintext M modulo n with respect to a Montgomery base R, i.e. C*=M2R?1 mod n, and the resultant ciphertext C* is employed for authenticating the RFID tag. The modulus n=p·q is the public key of the reader, the prime numbers p, q are the private key of the reader, and the Montgomery base R is an integer that is larger than the modulus n.

Abstract: In a cryptographic method between a portable data carrier and a terminal device there are employed a public data-carrier key and a secret data-carrier key of the data carrier as well as a public terminal key and a secret terminal key of the terminal device. The data carrier employs as a public data-carrier key a static public key. As a secret data-carrier key the data carrier employs a secret key that is derived from a secret basic key associated with the public data-carrier key. Within the framework of the method, the terminal device checks an authentication parameter associated with the data carrier and different from the data-carrier keys.

Abstract: A security element for an object of value has a flat, transparent body with a front side and a back side between which there lies a center plane, a first region configured on the body and a second region configured on the body which encode a motif. The body has in the first region a ground element structure which conveys different color impressions from front and back sides in plan view of the body. The body likewise has the ground element structure in the second region and is in mirrored form relative to the center plane, causing first and second regions to show the motif from both sides in plan view, and the motif to be unrecognizable in transmission view.

Abstract: A reading device for contactless communication with a transponder unit includes a first antenna for generating a reading device field in the form of an alternating magnetic field. The reading device further contains one or more second antennas configured, and arranged in relation to the first antenna, such that during a contactless communication of the reading device with a transponder unit which generates communication signals by means of load modulation, a predetermined change of a detection signal is captured on the second antenna or antennas if the transponder unit is located in a predetermined zone around the reading device.

Abstract: The invention concerns a security element having a magnetic coding consisting of magnetic coding elements. At least one of the magnetic coding elements has a grid-shaped magnetic region which is formed by a plurality of mutually parallel grid strips made of magnetic material which respectively have a magnetic anisotropy. The grid strips lead, through their magnetic anisotropy, to the magnetization direction of the coding element being able to differ from the direction of the applied magnetic field. Since the resultant magnetic signals that the grid-shaped magnetic regions deliver cannot be simulated by conventional magnetic regions, said coding elements increase the anti-forgery security of the security element.

Abstract: The present invention relates to a method for producing a security element (1), to a security element (1) obtainable by the method according to the invention, to transfer materials having the security elements according to the invention, and to objects of value secured with the security elements according to the invention. The security element (1) according to the invention has two functional layers (12, 22) which are bonded together by means of a resist layer (30). The resist layer (30) has a pattern which is employed to generate a congruent pattern in the first functional layer (12). Then the pattern of the resist layer (30), and thus also of the first functional layer (12), is exactly reproduced in the second functional layer (22). This is achieved by bonding the second functional layer (22) in the form of the pattern of the resist layer (30). The non-bonded areas of the second functional layer (22) are removed, thereby forming negative writing.

Abstract: An optically variable surface pattern is made available, having at least two partial areas with reflection elements, wherein the reflection elements of the first partial region on the one hand and the reflection elements of the second partial region on the other hand reflect impinging light in different reflection directions. The first partial region is so covered with a first glazing ink layer that a viewer, upon a change of the viewing angle at which the viewer views the optically variable surface pattern, sees the first partial region glow in a first color upon reaching a first viewing angle. The second partial region glows in a second color that is different from the first color upon reaching a second viewing angle.