摘要 |
In data processing system memory areas protected by passwords and technical system measures or in transceiver units of office computer or microelectronic systems designed according to esoteric principles, in which access to protected memory areas is secured by means of a personal identification number, on the basis of the date and time of a transaction time synchronised between the source (transmitter) and the sink (receiver) or the difference between a synchronised time and the transaction time with a secret, irreversible algorithm, either an address is calculated in a protected memory area and at this location in the transceiver unit a code number of defined length is used for the encryption or decryption of information, where identical (two-way) or complementary (one-way) codes may be involved in the transceiver unit or a two-way code is calculated directly. The method is suitable for a large number of applications in which information is transmitted from a source (transmitter) to a sink (receiver) and needs to be authenticated for security reasons and/or needs to be encoded in the transmitter for data protection or other secrecy reasons and converted back into open information in the receiver, where the transaction time can be incorruptibly restricted within the system to a specific time and/or can be correspondingly documented. |