System and method for proving time and content of digital data in a monitored system
First Claim
1. A method for monitoring and saving a data record in a monitored system for preventing the possibility to tamper with said data record at a later time, comprising saving data content together with a time-limited active key and encrypting said saved data content and active key using an encryption algorithm not possible for the encryptor to decrypt, said encrypted data content and active key comprising said data record.
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Accused Products
Abstract
Method for monitoring and saving data records in a monitored system (100) with the purpose of preventing the possibility to tamper with said data records at a later time. The inventive method comprises the steps of saving data content together with a time-limited active key and encrypting the data content and active key using an encryption algorithm not possible for the encryptor to decrypt, the encrypted data content and active key forming the data record.
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Citations
44 Claims
- 1. A method for monitoring and saving a data record in a monitored system for preventing the possibility to tamper with said data record at a later time, comprising saving data content together with a time-limited active key and encrypting said saved data content and active key using an encryption algorithm not possible for the encryptor to decrypt, said encrypted data content and active key comprising said data record.
Specification