Method and device that validates time of an internal source using an external source
First Claim
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1. A method for sealing digital data with a time stamp of an internal time signal of an internal clock, comprising:
- reception and evaluation of an external broadcast or cable signal of an external time source, from which the standard time can be derived, comparison of the standard time with the internal time signal of the internal clock, time stamping of the digital data, if the time difference between the internal and external time signals lies within a given tolerance range, and encryption of the time-stamped digital data.
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Abstract
Digital data is provided with a time stamp of an internal time signal of an internal clock. The internal time signal is validated by receiving and evaluating an internal broadcast or a cable signal of an external time source, from which a standard time can be derived, comparing the standard time with the internal time signal of the internal clock, and time stamping the digital data. The digital data is time stamped only if a time difference between the internal and external time signals lies within a given tolerance range. Finally, the time-stamped digital data is encrypted.
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Citations
33 Claims
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1. A method for sealing digital data with a time stamp of an internal time signal of an internal clock, comprising:
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reception and evaluation of an external broadcast or cable signal of an external time source, from which the standard time can be derived, comparison of the standard time with the internal time signal of the internal clock, time stamping of the digital data, if the time difference between the internal and external time signals lies within a given tolerance range, and encryption of the time-stamped digital data.
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2. A device for sealing digital data with time stamping, comprising:
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a receiver for receiving and evaluation an external broadcast or cable signal of an external time source, from which the standard time can be derived as an external time signal, an internal clock for generating an internal time signal, a comparer for comparing the determined external normal time with the internal time, means for time stamping the digital data when a time difference between the internal and external time signals lies within a given tolerance range, and means for encrypting the digital data after the time stamping.
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3. A method for generating encrypted computer data, comprising:
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receiving a first signal, via one of broadcast and cable, from which a standard time can be derived;
checking the first signal in real time; and
generating an encrypted file using an encryption procedure incorporating the standard time into the encryption file, whereby subsequent manipulation of the encrypted file can be recognized. - View Dependent Claims (5, 6, 7, 8, 9, 10)
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4. A method for generating encrypted computer data, comprising:
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receiving a first signal, via one of broadcast and cable, from which a standard time can be derived;
checking the first signal in real time;
generating an encrypted file using an encryption procedure incorporating the standard time into the encryption file, whereby subsequent manipulation of the encrypted file can be recognized; and
transmitting a second signal via at least one of wireless and wired communication.
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11. A method for generating encrypted computer data, comprising:
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automatically receiving, via one of broadcast and cable, a first signal in encrypted form, containing a government broadcast time signal and an authentication code that adequately identifies a telecommunication provider transmitting the first signal, where the point in time that the first signal is transmitted and received is part of the encryption and a standard time can be derived from the first signal;
checking the first signal in real time;
generating an encrypted file using an encryption procedure incorporating the standard time into the encryption file, whereby subsequent manipulation of the encrypted file can be recognized; and
sending the encrypted file in a remote data transmission.
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12. A method for generating encrypted computer data, comprising automatically receiving, via one of broadcast and cable, a first signal in encrypted form, containing a government broadcast time signal and an authentication code that adequately identifies a transmitter of the first signal, where the point in time that the first signal is transmitted and received is part of the encryption and a standard time can be derived from the first signal;
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checking the first signal in real time;
determining a location where the method is being performed using a GPS system; and
generating an encrypted file using an encryption procedure incorporating the location and the standard time in the encrypted file, whereby subsequent manipulation of the encrypted file can be recognized.
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13. A device, connected to an authentication device, for generating encrypted computer data, comprising:
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a receiver to receive a first signal, via one of broadcast and cable, from which a standard time can be derived; and
a processor, coupled to said receiver, to check the first signal in real time and to generate an encrypted file using an encryption procedure incorporating the standard time into the encryption file, whereby subsequent manipulation of the encrypted file can be recognized. - View Dependent Claims (14, 15, 16, 17)
further comprising a memory, coupled to or integrated in said processor, to store an identification number, and wherein said processor incorporates the identification number into the encryption file. -
15. A device as recited in claim 14, wherein said processor performs hardware encryption.
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16. A device as recited in claim 15, wherein the encrypted file is based on an original file provided with a signature.
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17. A device as recited in claim 16, further comprising authentication components, coupled to or integrated in said processor, to authenticate, store, modify, check and pass along the first signal.
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18. A device protected against manipulation of an internal clock in the device, comprising:
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a receiver to receive a first signal, via one of broadcast and cable, from which a standard time can be derived;
a processor, coupled to said receiver, to check the first signal in real time and to generate an encrypted file, based on an original file provided with a signature, using hardware encryption to perform an encryption procedure incorporating the standard time and an identification number into the encryption file, whereby subsequent manipulation of the encrypted file can be recognized;
a memory, coupled to or integrated in said processor, to store the identification number; and
authentication components, coupled to or integrated in said processor, to authenticate, store, modify, check and pass along the first signal. - View Dependent Claims (19, 20, 21)
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22. A method for sealing digital data, comprising:
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obtaining an internal time signal from an internal clock;
evaluating an external time signal from an external time source, received via one of a cable and a broadcast medium, to derive a standard time;
comparing the standard time with the internal time signal;
time stamping the digital data, if a time difference between the standard time and the internal time signal lies within a given tolerance range; and
encrypting the digital data after said time stamping thereof. - View Dependent Claims (23, 24, 25, 26, 27, 28)
determining a location of where said method is performed using a global positioning satellite system; and
adding the location to the digital data prior to said encrypting.
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29. A device for sealing digital data, comprising:
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obtaining means for obtaining an internal time signal from an internal clock;
evaluating means for evaluating an external time signal from an external time source, received via one of a cable and a broadcast medium, to derive a standard time;
comparing means for comparing the standard time with the internal time signal;
time stamping means for time stamping the digital data, if a time difference between the standard time and the internal time signal lies within a given tolerance range; and
encrypting means for encrypting the digital data after said time stamping thereof. - View Dependent Claims (30, 31, 33)
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32. A device, comprising means for protecting against manipulation of an internal clock in the device.
Specification